Microwave Doppler detection module and equipment

Abstract

The present invention provides a microwave Doppler detection module and equipment, wherein the microwave Doppler detection module comprises an electromagnetic reflection surface and at least one pair of dual coupling poles arranged at a distance from the electromagnetic reflection surface, wherein the pair of dual coupling poles has a first feeding end and a second feeding end, and a first radiation source pole and a second radiation source pole are respectively extended from the two feeding ends, wherein the first feeding end and the second feeding end are close to each other, and when the first radiation source pole and the second radiation source pole are respectively fed by the same excitation signal feed source at the first feeding end and the second feeding end, the current and potential distribution of the first radiation source pole and the second radiation source pole can be coupled in a dual manner with the midpoint of the connection line of the first feeding end and the second feeding end being in a dual distribution state, thereby reducing the size requirement of the microwave Doppler detection module and avoiding the formation of a detection dead zone.

Description

Technical Field

[0001] The invention relates to the field of microwave Doppler detection, and in particular to a microwave Doppler detection module and equipment. Background Art

[0002] Microwave detection technology based on the Doppler effect principle is an important hub connecting people and objects, and objects and objects. It has unique advantages in behavior detection and existence detection technology. It can detect moving objects without infringing on people's privacy, and therefore has broad application prospects.

[0003] The existing microwave detection modules are mainly divided into a microwave detection module with a columnar radiation source structure and a microwave detection module with a flat radiation source structure according to the structure of the radiation source. Figure 1A and Figure 1B As shown, the structural principles of the existing microwave detection module 10P with a columnar radiation source structure and the microwave detection module 20P with a flat radiation source structure are respectively illustrated, wherein the microwave detection module 10P with a columnar radiation source structure includes a columnar radiation source 11P and a reference ground 12P, wherein the reference ground 12P is provided with a radiation hole 121P, wherein the columnar radiation source 11P vertically penetrates the reference ground 12P through the radiation hole 121P to form a A radiation gap 1211P, so that when the columnar radiation source 11P is fed, the columnar radiation source 11P can couple with the reference ground 12P and form a radiation space 100P from the radiation gap 1211P with the columnar radiation source 11P as the central axis, wherein the radiation space 100P is the coverage range of the electromagnetic wave radiated by the microwave detection module 10P of the columnar radiation source structure, wherein the radiation space 100P is concave at its central axis toward both ends of the columnar radiation source 11P and has a detection dead zone. Figure 1B The structural principle of the microwave detection module 20P of the flat radiation source structure is shown, wherein the microwave detection module 20P of the flat radiation source structure includes a flat radiation source 21P and a reference ground 22P, wherein the flat radiation source 21P and the reference ground 22P are arranged in parallel with each other and a radiation gap 23P is formed between the flat radiation source 21P and the reference ground 22P. It can be understood that, structurally, since the columnar radiation source 11P of the microwave detection module 10P of the columnar radiation source structure is perpendicular to the reference ground 12P, relative to the microwave detection module 20P of the flat radiation source structure tending to be a flat structure, the microwave detection module 10P of the columnar radiation source structure is easy to occupy a larger installation space in actual installation. Therefore, under the current trend of pursuing a small and simple appearance aesthetic, the microwave detection module with a flat radiation source structure is favored due to its advantages of small space occupation and relative stability.

[0004] However, in some application scenarios, the microwave detection module 10P with a columnar radiation source structure has more advantages than the microwave detection module 20P with a flat radiation source structure. Figure 2 As shown, the application of the microwave detection module 10P of the columnar radiation source structure on the LED light board 30P is illustrated, wherein a plurality of LED lamp beads 31P are evenly arranged on one side of the LED light board 30P to form a light-emitting surface on the surface of the LED light board 30P. It can be understood that in order to realize the control of the lighting of the LED light board 30P based on human activities, the existing microwave detection module is applied to the LED light board 30P, and in actual application, the effective electromagnetic wave detection signal should be radiated in the space corresponding to the light-emitting surface of the LED light board 30P. Since the current LED light board 30P is mostly made of conductive aluminum plate, in order to avoid the shielding effect of the conductive LED light board 30P on the electromagnetic wave detection signal, from the perspective of the stability of human activity detection, ideally, the microwave detection module as a human activity detection component should be placed on the light-emitting surface of the LED light board 30P. However, regardless of whether the microwave detection module 10P with a columnar radiation source structure or the microwave detection module 20P with a flat radiation source structure is used, since the minimum extreme value of the area size of the corresponding reference ground 12P and the reference ground 22P is limited, the installation of the microwave detection module 10P with a columnar radiation source structure or the microwave detection module 20P with a flat radiation source structure on the light-emitting surface of the LED light board 30P is bound to occupy part of the installation position of the LED lamp bead 31P or block part of the LED lamp bead 31P, thereby causing the light emitted by the LED light board 30P to produce a dark area.

[0005] Therefore, in order to realize the lighting control of the LED light board 30P based on the detection of human activities, the current method mainly involves setting a through hole 32P on the LED light board 30P without affecting the arrangement of the LED lamp beads 31P, and extending the columnar radiation source 11P of the microwave detection module 10P with a columnar radiation source structure through the through hole 32P through the LED light board 30P on the side of the LED light board 30P opposite to the light-emitting surface, so as to hide the reference ground 12P of the microwave detection module 10P with a columnar radiation source structure on the side of the LED light board 30P opposite to the light-emitting surface, so that the installation of the microwave detection module 10P with a columnar radiation source structure on the LED light board 30P can avoid occupying part of the installation position of the LED lamp beads 31P or blocking part of the LED lamp beads 31P, thereby maintaining the uniformity of the light emitted by the LED light board 30P. However, in actual use, limited by the thinnest thickness of the LED light board 30P and the maximum size of the through hole 32P, the coupling between the columnar radiation source 11P of the microwave detection module 10P with a columnar radiation source structure and the reference ground 12P will be blocked by the LED light board 30P, that is, the corresponding radiation space 100P located on the light-emitting surface of the LED light board 30 will be reduced due to the shielding and reflection effect of the LED light board 30P. Therefore, the stability of the microwave detection module 10P with a columnar radiation source structure applied to the LED light board 30P for detecting human activities is not ideal. And due to the directionality of the bidirectional radiation of the microwave detection module 10P of the columnar radiation source structure and the reflective effect of the LED light board 30P, the corresponding radiation space 100P located on the surface of the LED light board 30P opposite to the light-emitting surface will be enhanced, that is, the radiation energy of the microwave detection module 10P of the columnar radiation source structure on the surface of the LED light board 30P opposite to the light-emitting surface is enhanced. Therefore, when there is a metal object in the space corresponding to the surface of the LED light board 30P opposite to the light-emitting surface, such as the metal shell of the LED light board 30P or the metal pipe in the ceiling space, the microwave detection module 10P of the columnar radiation source structure is easily mistaken for the presence of an active object due to the self-excitation principle, thereby affecting the experience of intelligent control of the LED light board 30P based on detection of human activities.

[0006] That is to say, relative to the microwave detection module 20P with the flat radiation source structure, the microwave detection module 10P with the columnar radiation source structure can extend the columnar radiation source 11P through a through hole in a shielded space corresponding to one side of a metal plate to a space outside the shielded space corresponding to the other side of the metal plate, thereby breaking through the shielded space to realize activity detection in the space outside the shielded space. However, its detection stability is not ideal, and there is a detection dead zone. Summary of the invention

[0007] An object of the present invention is to provide a microwave Doppler detection module and device, wherein the microwave Doppler detection module adopts a dual coupling method, which reduces the size requirement of the microwave Doppler detection module and can avoid the formation of a detection dead zone.

[0008] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein the microwave Doppler detection module includes at least one pair of dual coupling poles based on a dual coupling structure, wherein a pair of dual coupling poles includes a first radiation source pole and a second radiation source pole, wherein the first radiation source pole has a first feeding end and extends with the first feeding end as an end, wherein the second radiation source pole has a second feeding end and extends with the second feeding end as an end, wherein the first feeding end and the second feeding end are close to each other, so that when the first radiation source pole and the second radiation source pole are respectively fed by the same source at the first feeding end and the second feeding end, the first radiation source pole is coupled from the first feeding end along the first radiation source pole to the corresponding position of the second radiation source pole from the second feeding end along the second radiation source pole, thereby forming a dual coupling mode between the first radiation source pole and the second radiation source pole.

[0009] Another object of the present invention is to provide a microwave Doppler detection module and equipment. When the first radiation source and the second radiation source are respectively fed by the same source at the first feeding end and the second feeding end, the second radiation source and the first radiation source form a radiation space based on a dual coupling method, wherein the radiation space is the coverage range of the electromagnetic waves radiated by the microwave Doppler detection module. Then, between the second radiation source and the first radiation source, the radiation space is formed based on the dual coupling method and can avoid forming a detection dead zone concavely toward the microwave Doppler detection module, which is beneficial to improving the detection stability and applicability of the microwave Doppler detection module.

[0010] Another object of the present invention is to provide a microwave Doppler detection module and equipment, wherein the microwave Doppler detection module further has an electromagnetic reflection surface, wherein the first radiation source and the second radiation source are arranged at intervals from the electromagnetic reflection surface in the space corresponding to the electromagnetic reflection surface, so as to form the directional radiation characteristics of the microwave Doppler detection module by virtue of the reflection characteristics of the electromagnetic reflection surface to electromagnetic waves. The microwave Doppler detection module is suitable for detecting the activities of objects in a directional space, and is beneficial to avoiding self-excitation of the microwave Doppler detection module and improving the anti-interference performance of the microwave Doppler detection module.

[0011] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein based on a dual coupling method, the first radiation source and the second radiation source are co-source fed at the first feeding end and the second feeding end, respectively, so that the size requirement for coupling between the second radiation source and the first radiation source is reduced, and the corresponding line length requirement of the second radiation source from the second feeding end along the second radiation source and the line length requirement of the first radiation source from the first feeding end along the first radiation source are reduced, which is conducive to reducing the size of the microwave Doppler detection module.

[0012] Another object of the present invention is to provide a microwave Doppler detection module and equipment, wherein the first radiation source is terminated by the first feeding end, and the second radiation source is terminated by the second feeding end. When the first radiation source and the second radiation source are co-source fed at the first feeding end and the second feeding end respectively, the potential and current of the first radiation source and the second radiation source are simplified in a dual distribution state, thereby facilitating the data processing of the microwave Doppler detection module and improving the stability of the microwave Doppler detection module.

[0013] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein based on a dual coupling method, the second radiation source has a shape and size corresponding to the first radiation source, so that the first radiation source and the second radiation source are free from the limitation of having a limited area as a reference surface, that is, the shape and size of the first radiation source and the second radiation source have a variety of implementation structures and are not limited to a plate-like structure with a limited area, which is conducive to improving the applicability of the microwave Doppler detection module.

[0014] Another object of the present invention is to provide a microwave Doppler detection module and equipment, wherein the first radiation source pole and the second radiation source pole have flexible and changeable shapes and sizes and are not limited to a plate structure with a limited area. By extending the first radiation source pole and the second radiation source pole out of the corresponding metal plate, the microwave Doppler detection module is also suitable for the application scenarios of the microwave detection module with the aforementioned columnar radiation source structure, and relative to the microwave detection module with a columnar radiation source structure, the microwave Doppler detection module has better stability in the corresponding application scenarios.

[0015] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein the first radiation source and the second radiation source are symmetrically arranged about the midpoint of the line connecting the first feeding end and the second feeding end, that is, the first radiation source and the second radiation source have the same shape and size and are symmetrically arranged about the midpoint of the line connecting the first feeding end and the second feeding end, so as to ensure that the second radiation source and the first radiation source are coupled in a dual manner.

[0016] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein based on the adjustment of the shapes of the second radiation source and the first radiation source, such as adjusting the shapes of the second radiation source and the first radiation source in a bending manner, while maintaining the line length requirement of the second radiation source from the second feeding end along the second radiation source and the line length requirement of the first radiation source from the first feeding end along the first radiation source, the size of the microwave Doppler detection module can be further reduced, that is, while ensuring the coupling between the second radiation source and the first radiation source in a dual manner, the applicability of the microwave Doppler detection module is improved.

[0017] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein based on the adjustment of the positional relationship between the first radiation source and the second radiation source, such as the adjustment of the shape of the second radiation source and the first radiation source, or the rotation adjustment of the second radiation source and the first radiation source around the second feeding end and the first feeding end respectively, the radiation space can be adjusted to correspondingly change the detection angle and direction of the microwave Doppler detection module, thereby improving the applicability of the microwave Doppler detection module.

[0018] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein the first radiation source electrode and the second radiation source electrode are further grounded to reduce the impedance of the microwave Doppler detection module, so that the quality factor (i.e., Q value) of the microwave Doppler detection module is improved, which is beneficial to improving the anti-interference ability of the microwave Doppler detection module.

[0019] Another object of the present invention is to provide a microwave Doppler detection module and equipment, wherein the end of the first radiation source opposite to the first feeding end extends integrally to the end of the second radiation source opposite to the second feeding end, so as to maintain the symmetrical structure between the first radiation source and the second radiation source, and to form a state in which the first radiation source and the second radiation source are grounded when one of the first radiation source and the second radiation source is grounded, which is conducive to simplifying the circuit connection structure of the microwave Doppler detection module.

[0020] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein the microwave Doppler detection module further includes a circuit substrate and a circuit unit carried by the circuit substrate, wherein the circuit unit includes an oscillation circuit unit and a mixer detection unit, wherein the first radiation source and the second radiation source are electrically coupled to different poles of the oscillation circuit unit at the first feeding end and the second feeding end respectively, wherein the mixer detection unit is electrically coupled to the oscillation circuit unit and the dual coupling pole, so that when the oscillation circuit unit is powered, the first radiation source and the second radiation source are co-source fed by the oscillation circuit unit and coupled in a dual manner to emit a detection beam and receive an echo of the detection beam, and the mixer detection unit outputs an intermediate frequency signal corresponding to the frequency difference between the detection beam and the echo, then based on the Doppler effect principle, the intermediate frequency signal corresponds to the movement of the corresponding object that reflects the detection beam to form the echo, so the microwave Doppler detection module is suitable for detecting object movement.

[0021] Another object of the present invention is to provide a microwave Doppler detection module and equipment, wherein the electromagnetic reflection surface is carried on a side of the circuit substrate opposite to a side carrying the circuit unit, that is, the electromagnetic reflection surface faces the dual coupling poles and is blocked between the circuit unit and the dual coupling poles, so as to hinder the interference of the electromagnetic radiation generated by the coupling of the first radiation source pole and the second radiation source pole to the circuit unit through the reflection characteristics of the electromagnetic reflection surface to electromagnetic radiation, which is beneficial to improving the anti-interference performance of the microwave Doppler detection module.

[0022] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein the microwave Doppler detection module further includes a first feed line and a second feed line, wherein the first radiation source is electrically coupled to the oscillation circuit unit at the first feed end via the first feed line, and the second radiation source is electrically connected to the ground potential of the oscillation circuit unit at the second feed end via the second feed line, so as to form a circuit connection relationship in which the first radiation source and the second radiation source are electrically coupled to different poles of the oscillation circuit unit at the first feed end and the second feed end respectively, and the first feed line and the second feed line support the first radiation source and the second radiation source to form a structural relationship in which the dual coupling poles are arranged in the space corresponding to the electromagnetic reflection surface and are spaced apart from the electromagnetic reflection surface.

[0023] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein the second feeder is arranged to surround the first feeder to form an electromagnetic shielding cavity, so that when the second feeder is grounded, the influence of the coupling between the second feeder and the first feeder on the coupling between the first radiation source and the second radiation source is reduced, and the interference of external electromagnetic radiation on the first feeder is shielded, which is beneficial to improving the anti-interference performance of the microwave Doppler detection module.

[0024] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein the microwave Doppler detection device includes the microwave Doppler detection module and has an electromagnetic shielding layer, wherein the electromagnetic shielding layer has a through hole, wherein the circuit substrate is arranged in a shielding space corresponding to one side of the electromagnetic shielding layer, wherein the first radiation source and the second radiation source are arranged in a space corresponding to the other side of the electromagnetic shielding layer, wherein the first feeder and the second feeder penetrate the electromagnetic shielding layer through the through hole to form a circuit connection structure between the first radiation source and the second radiation source and the circuit unit, so that by setting the first radiation source and the second radiation source in the space outside the shielding space, the activity detection of the space outside the shielding space is realized, wherein based on the coupling mode of the first radiation source and the second radiation source, the projection area of ​​the first radiation source and the second radiation source in the direction perpendicular to the electromagnetic shielding layer can be reduced, which is beneficial to the concealment of the installation of the microwave Doppler detection module in the microwave Doppler detection device, and when the electromagnetic shielding layer is formed on the LED light board, it can avoid the formation of a dark area on the LED light board.

[0025] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein the second feed line and the first feed line are implemented as a shielded wire in which the second feed line surrounds the first feed line, wherein the shielding wire is pluggably arranged to form a pluggable circuit connection structure between the first radiation source electrode and the second radiation source electrode and the circuit unit, and the size of the through hole of the electromagnetic shielding layer is required to be suitable for the shielding wire to pass through, which is conducive to reducing the size of the through hole, thereby facilitating maintaining the integrity of the electromagnetic shielding layer.

[0026] Another object of the present invention is to provide a microwave Doppler detection module and device, wherein the microwave Doppler detection module can avoid the formation of a detection dead zone based on a dual coupling method, while reducing the size requirements of the microwave Doppler detection module, which is beneficial to improving the concealment and detection stability of the microwave Doppler detection module installed in the microwave Doppler detection device.

[0027] According to one aspect of the present invention, the present invention provides a microwave Doppler detection module, the microwave Doppler detection module comprising:

[0028] At least one pair of dual coupled poles, wherein the pair of dual coupled poles comprises a first radiation source pole and a second radiation source pole, wherein the first radiation source pole has a first feeding end and is configured as a conductor extending with the first feeding end as an end, wherein the second radiation source pole has a second feeding end and is configured as a conductor extending with the second feeding end as an end, wherein the first radiation source pole and the second radiation source pole are respectively adapted to be fed by the same excitation signal feed source at the first feeding end and the second feeding end, wherein the first feeding end and the second feeding end are close to each other within a distance range less than or equal to λ / 4, wherein λ is a wavelength parameter corresponding to the feeding signal frequency of the excitation signal feed source, wherein the first radiation source pole is a first radiation source pole and a second radiation source pole is a second radiation source pole, wherein the first radiation source pole and the second radiation source pole are respectively adapted to be fed by the same excitation signal feed source at the first feeding end and the second feeding end, wherein the first feeding end and the second feeding end are close to each other within a distance range less than or equal to λ / 4, wherein λ is a wavelength parameter corresponding to the feeding signal frequency of the excitation signal feed source, wherein the first radiation source pole is a first radiation source pole and a second radiation source pole, wherein the first radiation source pole and the second radiation source pole are respectively adapted to be fed by the same excitation signal feed source at the first feeding end and the second feeding end ... The source is configured to satisfy a line length greater than or equal to λ / 16 from the first feeding end, wherein the second radiation source is configured to satisfy a line length greater than or equal to λ / 16 from the second feeding end, so that when the first radiation source and the second radiation source are fed by the same excitation signal feed source at the first feeding end and the second feeding end respectively, the current and potential distributions of the first radiation source and the second radiation source can be in a dual distribution state with the midpoint of the line connecting the first feeding end and the second feeding end, so that the first radiation source is coupled to the corresponding position of the second radiation source along the first radiation source from the first feeding end along the second radiation source; and

[0029] An electromagnetic reflection surface, wherein the dual coupling poles are arranged in a space corresponding to the electromagnetic reflection surface and spaced apart from the electromagnetic reflection surface.

[0030] In one embodiment, a dimension of the electromagnetic reflection surface in a direction parallel to a line connecting the first feeding end and the second feeding end satisfies being greater than or equal to λ / 4, and a dimension of the electromagnetic reflection surface in a direction perpendicular to a line connecting the first feeding end and the second feeding end satisfies being greater than or equal to λ / 4.

[0031] In one embodiment, the distance between the midpoint of the line connecting the first feeding end and the second feeding end and the electromagnetic reflection surface satisfies that it is greater than or equal to λ / 32.

[0032] In one embodiment, the microwave Doppler detection module further includes a circuit unit, wherein the circuit unit includes an oscillation circuit unit and a mixer-detection unit, wherein the mixer-detection unit is electrically coupled to the oscillation circuit unit and the dual coupling pole, wherein the oscillation circuit unit is configured to allow being powered and outputting a feeding signal at its feed pole and being grounded at its ground pole to serve as an excitation signal feed source, wherein the first radiation source pole is electrically coupled to the feed pole of the oscillation circuit unit at the first feeding end, wherein the second radiation source pole is electrically connected to the ground pole of the oscillation circuit unit at the second feeding end, so that when the oscillation circuit unit is powered, the first radiation source pole and the second radiation source pole are co-source fed by the oscillation circuit unit at the first feeding end and the second feeding end, respectively.

[0033] In one embodiment, the electromagnetic reflection surface is blocked between the dual coupling poles and the circuit unit.

[0034] In one embodiment, the microwave Doppler detection module further comprises a circuit substrate, wherein the electromagnetic reflection surface and the circuit unit are carried on two opposite surfaces of the circuit substrate.

[0035] In one embodiment, the microwave Doppler detection module further includes a first feed line and a second feed line, wherein the first radiation source is electrically coupled to the feed of the oscillation circuit unit at the first feed end via the first feed line, and the second radiation source is electrically connected to the ground of the oscillation circuit unit at the second feed end via the second feed line.

[0036] In one embodiment, the second feeding line surrounds the first feeding line to form an electromagnetic shielding cavity.

[0037] In one embodiment, the first radiation source is further electrically connected to a ground of the oscillating circuit unit.

[0038] In one embodiment, an end of the first radiation source of a pair of the dual coupled poles opposite to the first feeding end extends integrally to an end of the second radiation source opposite to the second feeding end, so that the first radiation source is grounded when the second radiation source is grounded.

[0039] In one embodiment, the first radiation source is electrically connected to the second feeding line and is electrically connected to the ground of the oscillating circuit unit.

[0040] In one embodiment, the second feed line has a pair of slotted positions along the direction of the first feed line from an end connected to the second radiation source, wherein the pair of slotted positions define a first arm and a second arm on the second feed line, wherein the second radiation source extends conductively from the second arm of the second feed line, wherein the first radiation source extends conductively from the first feed line and the first arm of the second feed line and is electrically connected to the ground of the oscillation circuit unit, wherein the second feed line is provided with at least one slot at the pair of slotted positions respectively along the direction of the first feed line.

[0041] In one embodiment, a pair of the slots has a slot depth greater than or equal to λ / 128 from one end of the second feeding line connected to the second radiation source along the direction of the first feeding line.

[0042] In one embodiment, the first feeding line extends integrally from the first feeding end to the first radiation source, and the second feeding line extends integrally from the second feeding end to the second radiation source.

[0043] In one embodiment, the first feeder line and the second feeder line are implemented as a shielded line in which the second feeder line surrounds the first feeder line, wherein the shielded line is pluggably arranged.

[0044] In one embodiment, the first radiation source and the second radiation source are arranged symmetrically about a midpoint of a line connecting the first feeding end and the second feeding end.

[0045] In one embodiment, the first radiation source is configured as a columnar conductive line extending from the first feeding end to the first feeding end along the line connecting the second feeding end to the first feeding end, and the second radiation source is configured as a columnar conductive line extending from the second feeding end to the second feeding end along the line connecting the first feeding end to the second feeding end.

[0046] In one embodiment, the first radiation source is configured as a columnar conductive line extending from the first feeding end to the first feeding end, and in a direction connecting the second feeding end to the first feeding end and in a direction away from the electromagnetic reflection surface, wherein the second radiation source is configured as a columnar conductive line extending from the second feeding end to the second feeding end, and in a direction connecting the first feeding end to the second feeding end and in a direction away from the electromagnetic reflection surface.

[0047] In one embodiment, the first radiation source is configured as a columnar conductive line extending from the first feeding end to the first feeding end, and in a direction connecting the second feeding end to the first feeding end and in a direction close to the electromagnetic reflection surface, wherein the second radiation source is configured as a columnar conductive line extending from the second feeding end to the second feeding end, and in a direction connecting the first feeding end to the second feeding end and in a direction close to the electromagnetic reflection surface.

[0048] In one embodiment, the first radiation source is arranged to extend from the first feeding end to the first feeding end, in a direction of a line from the second feeding end to the first feeding end, away from the electromagnetic reflection surface, and in a direction of a line from the first feeding end to the second feeding end, wherein the second radiation source extends from the second feeding end to the second feeding end, in a direction of a line from the first feeding end to the second feeding end, away from the electromagnetic reflection surface, and in a direction of a line from the second feeding end to the first feeding end.

[0049] In one embodiment, the first radiation source is arranged to extend from the first feeding end to the first feeding end, in a direction of a line from the second feeding end to the first feeding end, in a direction close to the electromagnetic reflection surface, and in a direction of a line from the first feeding end to the second feeding end, wherein the second radiation source extends from the second feeding end to the second feeding end, in a direction of a line from the first feeding end to the second feeding end, in a direction close to the electromagnetic reflection surface, and in a direction of a line from the second feeding end to the first feeding end.

[0050] In one embodiment, the microwave Doppler detection module further comprises a dielectric substrate, wherein the first radiation source and the second radiation source are carried on the dielectric substrate in the form of microstrip lines.

[0051] In one embodiment, the first radiation source and the second radiation source are carried on the same surface of the dielectric substrate, wherein the first radiation source is configured as a microstrip line extending from the first feeding end to the first feeding end along a line from the second feeding end to the first feeding end, and the second radiation source is configured as a microstrip line extending from the second feeding end to the second feeding end along a line from the first feeding end to the second feeding end.

[0052] In one embodiment, a surface of the dielectric substrate carrying the first radiation source and the second radiation source is parallel to the electromagnetic reflection surface.

[0053] In one embodiment, the microwave Doppler detection module includes two pairs of dual coupled poles, wherein the two first feeding ends of the two first radiation source poles of the two pairs of dual coupled poles are electrically connected, wherein the two second feeding ends of the two second radiation source poles of the two pairs of dual coupled poles are electrically connected, wherein the connection line of the two second feeding ends crosses the connection line of the two first feeding ends, and the connection line between the first feeding end and the second feeding end of one pair of the dual coupled poles is parallel to the connection line between the first feeding end and the second feeding end of another pair of the dual coupled poles.

[0054] In one embodiment, a surface of the dielectric substrate carrying the first radiation source and the second radiation source is perpendicular to the electromagnetic reflection surface, and a line connecting the first feeding end and the second feeding end is perpendicular to the electromagnetic reflection surface.

[0055] In one embodiment, a surface of the dielectric substrate carrying the first radiation source and the second radiation source is perpendicular to the electromagnetic reflection surface, and a line connecting the first feeding end and the second feeding end is parallel to the electromagnetic reflection surface.

[0056] In one embodiment, the first feeding end of the first radiation source and the second feeding end of the second radiation source are carried on the same surface of the dielectric substrate, wherein the first radiation source extends with the first feeding end as an end along a line connecting the second feeding end to the first feeding end, and continues to extend around the side of the dielectric substrate to the other surface of the dielectric substrate, wherein the second radiation source extends with the second feeding end as an end along a line connecting the first feeding end to the second feeding end, and continues to extend around the side of the dielectric substrate to the other surface of the dielectric substrate.

[0057] In one embodiment, the first feeding end of the first radiation source and the second feeding end of the second radiation source are respectively carried on two opposite surfaces of the dielectric substrate, wherein the first radiation source extends from the first feeding end to one side of the dielectric substrate and continues to extend around the side of the dielectric substrate to the other side of the dielectric substrate, and the second radiation source extends from the second feeding end to the other opposite side of the dielectric substrate and continues to extend around the opposite side of the dielectric substrate to the other side of the dielectric substrate.

[0058] According to another aspect of the present invention, the present invention further provides a microwave Doppler detection device, the microwave Doppler detection device comprising:

[0059] A circuit unit, wherein the circuit unit includes an oscillating circuit unit and a mixing detection unit, wherein the oscillating circuit unit is configured to allow being powered to output a feeding signal at its feeding pole and to be grounded at its ground pole to serve as an excitation signal feeding source;

[0060] an electromagnetic shielding layer, wherein the electromagnetic shielding layer is provided with a through hole, wherein the circuit unit is provided in a space corresponding to one side of the electromagnetic shielding layer; and

[0061] at least one pair of dual coupling poles, wherein the dual coupling poles are arranged in the space corresponding to the other side of the electromagnetic shielding layer, wherein the pair of dual coupling poles comprises a first radiation source pole and a second radiation source pole, wherein the first radiation source pole has a first feeding end and is arranged as a conductor extending with the first feeding end as an end, wherein the second radiation source pole has a second feeding end and is arranged as a conductor extending with the second feeding end as an end, wherein the mixer detection unit is electrically coupled to the oscillation circuit unit and the dual coupling poles, wherein the first radiation source pole is electrically coupled to the feed of the oscillation circuit unit at the first feeding end by a first feeding line penetrating the electromagnetic shielding layer through the through hole, wherein the second radiation source pole is electrically connected to the feed of the oscillation circuit unit at the second feeding end by a second feeding line penetrating the electromagnetic shielding layer through the through hole. connected to the ground of the oscillation circuit unit, wherein the first feeding end and the second feeding end are close to each other within a distance range of less than or equal to λ / 4, wherein λ is a wavelength parameter corresponding to the frequency of the feeding signal, wherein the first radiation source is configured to satisfy a line length greater than or equal to λ / 16 from the first feeding end, wherein the second radiation source is configured to satisfy a line length greater than or equal to λ / 16 from the second feeding end, so that when the oscillation circuit unit is powered, the potential distribution of the first radiation source and the second radiation source can be in a dual distribution state with the midpoint of the line connecting the first feeding end and the second feeding end, so that the first radiation source is coupled to the corresponding position of the second radiation source along the first radiation source from the first feeding end along the second radiation source from the second feeding end.

[0062] In one embodiment, the microwave Doppler detection module further includes a circuit substrate, wherein the circuit unit is carried on the circuit substrate.

[0063] In one embodiment, the second feeding line surrounds the first feeding line to form an electromagnetic shielding cavity.

[0064] In one embodiment, the first feeding line extends integrally from the first feeding end to the first radiation source, and the second feeding line extends integrally from the second feeding end to the second radiation source.

[0065] In one embodiment, the first feed line and the second feed line are implemented as a shielded wire in which the second feed line surrounds the first feed line, wherein the shielded wire is pluggably arranged, and the size of the through hole is arranged to be adapted to the wire diameter of the shielded wire.

[0066] In one embodiment, the electromagnetic shielding layer is configured as an LED light panel.

[0067] In one embodiment, the microwave Doppler detection device further comprises an electromagnetic reflection surface, wherein the electromagnetic reflection surface is carried on a side of the circuit substrate opposite to a side carrying the circuit unit, and is blocked between the dual coupling poles and the circuit unit.

[0068] In one embodiment, a dimension of the electromagnetic reflection surface in a direction parallel to a line connecting the first feeding end and the second feeding end satisfies being greater than or equal to λ / 4, and a dimension of the electromagnetic reflection surface in a direction perpendicular to a line connecting the first feeding end and the second feeding end satisfies being greater than or equal to λ / 4.

[0069] In one embodiment, the first radiation source and the second radiation source are arranged symmetrically about a midpoint of a line connecting the first feeding end and the second feeding end.

[0070] In one embodiment, the first radiation source is configured as a columnar conductive line extending from the first feeding end to the first feeding end along the line connecting the second feeding end to the first feeding end, and the second radiation source is configured as a columnar conductive line extending from the second feeding end to the second feeding end along the line connecting the first feeding end to the second feeding end.

[0071] In one embodiment, the first radiation source is configured as a columnar conductive line extending from the first feeding end to the first feeding end, and in a direction connecting the second feeding end to the first feeding end and in a direction away from the electromagnetic reflection surface, wherein the second radiation source is configured as a columnar conductive line extending from the second feeding end to the second feeding end, and in a direction connecting the first feeding end to the second feeding end and in a direction away from the electromagnetic reflection surface.

[0072] In one embodiment, the first radiation source is configured as a columnar conductive line extending from the first feeding end to the first feeding end, and in a direction connecting the second feeding end to the first feeding end and in a direction close to the electromagnetic reflection surface, wherein the second radiation source is configured as a columnar conductive line extending from the second feeding end to the second feeding end, and in a direction connecting the first feeding end to the second feeding end and in a direction close to the electromagnetic reflection surface.

[0073] In one embodiment, the first radiation source is arranged to extend from the first feeding end to the first feeding end, in a direction of a line from the second feeding end to the first feeding end, away from the electromagnetic reflection surface, and in a direction of a line from the first feeding end to the second feeding end, wherein the second radiation source extends from the second feeding end to the second feeding end, in a direction of a line from the first feeding end to the second feeding end, away from the electromagnetic reflection surface, and in a direction of a line from the second feeding end to the first feeding end.

[0074] In one embodiment, the first radiation source is arranged to extend from the first feeding end to the first feeding end, in a direction of a line from the second feeding end to the first feeding end, in a direction close to the electromagnetic reflection surface, and in a direction of a line from the first feeding end to the second feeding end, wherein the second radiation source extends from the second feeding end to the second feeding end, in a direction of a line from the first feeding end to the second feeding end, in a direction close to the electromagnetic reflection surface, and in a direction of a line from the second feeding end to the first feeding end.

[0075] In one embodiment, the microwave Doppler detection module further comprises a dielectric substrate, wherein the first radiation source and the second radiation source are carried on the dielectric substrate in the form of microstrip lines.

[0076] In one embodiment, the first radiation source and the second radiation source are carried on the same surface of the dielectric substrate, wherein the first radiation source is configured as a microstrip line extending from the first feeding end to the first feeding end along a line from the second feeding end to the first feeding end, and the second radiation source is configured as a microstrip line extending from the second feeding end to the second feeding end along a line from the first feeding end to the second feeding end.

[0077] In one embodiment, a surface of the dielectric substrate carrying the first radiation source and the second radiation source is parallel to the electromagnetic reflection surface.

[0078] In one embodiment, the microwave Doppler detection module includes two pairs of dual coupled poles, wherein the two first feeding ends of the two first radiation source poles of the two pairs of dual coupled poles are electrically connected, wherein the two second feeding ends of the two second radiation source poles of the two pairs of dual coupled poles are electrically connected, wherein the connection line of the two second feeding ends crosses the connection line of the two first feeding ends, and the connection line between the first feeding end and the second feeding end of one pair of the dual coupled poles is parallel to the connection line between the first feeding end and the second feeding end of another pair of the dual coupled poles.

[0079] In one embodiment, a surface of the dielectric substrate carrying the first radiation source and the second radiation source is perpendicular to the electromagnetic reflection surface, and a line connecting the first feeding end and the second feeding end is perpendicular to the electromagnetic reflection surface.

[0080] In one embodiment, the microwave Doppler detection module includes two pairs of dual coupled poles, wherein the two first feeding ends of the two first radiation source poles of the two pairs of dual coupled poles are electrically connected, wherein the two second feeding ends of the two second radiation source poles of the two pairs of dual coupled poles are electrically connected, wherein the connection line of the two second feeding ends crosses the connection line of the two first feeding ends, and the connection line between the first feeding end and the second feeding end of one pair of the dual coupled poles is parallel to the connection line between the first feeding end and the second feeding end of another pair of the dual coupled poles.

[0081] In one embodiment, a surface of the dielectric substrate carrying the first radiation source and the second radiation source is perpendicular to the electromagnetic reflection surface, and a line connecting the first feeding end and the second feeding end is parallel to the electromagnetic reflection surface.

[0082] In one embodiment, the first feeding end of the first radiation source and the second feeding end of the second radiation source are carried on the same surface of the dielectric substrate, wherein the first radiation source extends with the first feeding end as an end along a line connecting the second feeding end to the first feeding end, and continues to extend around the side of the dielectric substrate to the other surface of the dielectric substrate, wherein the second radiation source extends with the second feeding end as an end along a line connecting the first feeding end to the second feeding end, and continues to extend around the side of the dielectric substrate to the other surface of the dielectric substrate.

[0083] In one embodiment, the first feeding end of the first radiation source and the second feeding end of the second radiation source are respectively carried on two opposite surfaces of the dielectric substrate, wherein the first radiation source extends from the first feeding end to one side of the dielectric substrate and continues to extend around the side of the dielectric substrate to the other side of the dielectric substrate, and the second radiation source extends from the second feeding end to the other opposite side of the dielectric substrate and continues to extend around the opposite side of the dielectric substrate to the other side of the dielectric substrate.

[0084] Further objects and advantages of the present invention will be fully apparent from an understanding of the following description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] Figure 1AThe schematic diagram of the structure of a microwave detection module with an existing columnar radiation source structure.

[0086] Figure 1B The schematic diagram of the structure of a microwave detection module with an existing flat-plate radiation source structure is shown in FIG.

[0087] Figure 2 This is a schematic diagram of the installation structure of a microwave detection module with an existing columnar radiation source structure on an LED light board.

[0088] Figure 3 FIG. 4 is a schematic diagram of a three-dimensional structure of a microwave Doppler detection module according to an embodiment of the present invention.

[0089] Figure 4A It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to a variant embodiment of the above embodiment of the present invention.

[0090] Figure 4B It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0091] Figure 5A It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0092] Figure 5B It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0093] Figure 5C It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0094] Figure 6 It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0095] Fig. 7A It is a three-dimensional schematic diagram of an optimized structure of the microwave Doppler detection module according to the above modified embodiment of the present invention.

[0096] Figure 7B It is a three-dimensional schematic diagram of another optimized structure of the microwave Doppler detection module according to the above variant embodiment of the present invention.

[0097] Figure 7C It is a three-dimensional schematic diagram of another optimized structure of the microwave Doppler detection module according to the above variant embodiment of the present invention.

[0098] Fig. 8AIt is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0099] Figure 8B It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0100] Figure 8C It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0101] Fig. 9 It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0102] Fig.10 It is a three-dimensional schematic diagram of an alternative structure of the microwave Doppler detection module according to the above variant embodiment of the present invention.

[0103] Fig.11 It is a three-dimensional schematic diagram of another alternative structure of the microwave Doppler detection module according to the above-mentioned variant embodiment of the present invention.

[0104] Fig.12 It is a three-dimensional schematic diagram of another alternative structure of the microwave Doppler detection module according to the above-mentioned variant embodiment of the present invention.

[0105] Fig.13 It is a three-dimensional schematic diagram of another alternative structure of the microwave Doppler detection module according to the above-mentioned variant embodiment of the present invention.

[0106] Fig.14 It is a three-dimensional schematic diagram of a modified structure of the above-mentioned alternative structure of the microwave Doppler detection module according to the above-mentioned modified embodiment of the present invention.

[0107] Fig.15 It is a three-dimensional schematic diagram of another alternative structure of the microwave Doppler detection module according to the above-mentioned variant embodiment of the present invention.

[0108] Fig.16 FIG. 4 is a schematic diagram of a three-dimensional structure of a microwave Doppler detection module according to another embodiment of the present invention.

[0109] Fig.17A It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to a variant embodiment of the above embodiment of the present invention.

[0110] Fig. 17B It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0111] Fig.18A It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0112] Fig.18B It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to the above modified embodiment of the present invention.

[0113] Fig.19A It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0114] Fig.19B It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to the above modified embodiment of the present invention.

[0115] Fig. 20 FIG. 4 is a schematic diagram of a three-dimensional structure of a microwave Doppler detection module according to another embodiment of the present invention.

[0116] Fig.21A It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to a variant embodiment of the above embodiment of the present invention.

[0117] Fig.21B It is a schematic diagram of the three-dimensional structure of the microwave Doppler detection module according to another variant embodiment of the above embodiment of the present invention.

[0118] Fig. 22 The figure is a three-dimensional structural diagram of a microwave Doppler detection device equipped with a microwave Doppler detection module according to an embodiment of the present invention.

[0119] Fig.23 FIG. 4 is a schematic diagram of a three-dimensional structure of a microwave Doppler detection device equipped with a microwave Doppler detection module according to another embodiment of the present invention. DETAILED DESCRIPTION

[0120] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0121] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0122] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0123] Referring to the accompanying drawings of the present invention Figure 3 As shown, a three-dimensional structure of a microwave Doppler detection module 10 according to an embodiment of the present invention is schematically shown, wherein the microwave Doppler detection module 10 includes at least one pair of dual coupled poles 11, wherein the pair of dual coupled poles 11 includes a first radiation source pole 111 and a second radiation source pole 112, wherein the second radiation source pole 112 has a second feeding end 1121, and the first radiation source pole 111 has a first feeding end 1111, wherein the second feeding end 1121 and the first feeding end 1111 are close to each other, wherein the second radiation source pole 112 is a conductor extending with the second feeding end 1121 as an end, and wherein the first radiation source pole 111 is a conductor extending with the first feeding end 1111 as an end. The invention relates to a conductor extending from a first feeding end 1111 to a second feeding end 1121, wherein the first radiation source 111 and the second radiation source 112 are respectively configured to be co-source fed at the first feeding end 1111 and the second feeding end 1121, so that when the first radiation source 111 and the second radiation source 112 are co-source fed at the first feeding end 1111 and the second feeding end 1121, respectively, the first radiation source 111 is coupled from the first feeding end 1111 along the first radiation source 111 to a corresponding position of the second radiation source 112 from the second feeding end 1121 along the second radiation source 112, thereby forming a dual coupling mode between the first radiation source 111 and the second radiation source 112.

[0124] It is worth mentioning that, based on the dual coupling mode between the first radiation source 111 and the second radiation source 112, the second radiation source 112 with the second feeding end 1121 as the end is fed at the second feeding end 1121, and the first radiation source 111 with the first feeding end 1111 as the end is fed at the first feeding end 1111, then the size requirement for coupling between the second radiation source 112 and the first radiation source 111 is reduced. Specifically, the second radiation source 112 and the first radiation source 111 are configured to satisfy the line length greater than or equal to λ / 16 from the second feeding end 1121 and the first feeding end 1111, respectively, where λ is a wavelength parameter corresponding to the frequency of the feeding signal. That is, the first radiation source 111 is configured to satisfy that the line length between the first feeding end 1111 and the end opposite to the first feeding end 1111 is greater than or equal to λ / 16, and the second radiation source 112 is configured to satisfy that the line length between the second feeding end 1121 and the end opposite to the second feeding end 1121 is greater than or equal to λ / 16, that is, the first radiation source 111 and the second radiation source 112 are allowed to be configured to have a minimum line length of λ / 16 from the first feeding end 1111 and the second feeding end 1121, respectively.

[0125] Further, the second feeding end 1121 and the first feeding end 1111 are close to each other and the distance between the second feeding end 1121 and the first feeding end 1111 should be less than or equal to λ / 4, so that when the first radiation source 111 and the second radiation source 112 are co-source fed at the first feeding end 1111 and the second feeding end 1121 respectively, the first radiation source 111 and the second radiation source 112 can be coupled to each other.

[0126] In particular, in the description of the embodiments of the present invention, the microwave Doppler detection module 10 is exemplified by taking the example that the first radiation source pole 111 and the second radiation source pole 112 are respectively fed and connected to different poles of the same excitation signal feed source at the first feeding end 1111 and the second feeding end 1121 and are fed from the same source.

[0127] Specifically, in this embodiment of the present invention, the first radiation source 111 is suitable for being fed and connected to the feed of the excitation signal feed source at the first feeding end 1111, and the second radiation source 112 is suitable for being electrically connected to the ground of the excitation signal feed source at the second feeding end 1121 and being fed by the same source as the first radiation source 111 by the excitation signal feed source, wherein when the first radiation source 111 is fed at the first feeding end 1111 and the second radiation source 112 is grounded at the second feeding end 1121, the first radiation source 111 is coupled to the second radiation source 112 from the first feeding end 1111 along the corresponding position of the second radiation source 112, thereby forming a radiation space 100, wherein the radiation space 100 is the coverage range of the electromagnetic waves radiated by the microwave Doppler detection module 10, wherein since the first radiation source 111 is coupled from the first feeding end 1111 along the first radiation source 111 to the corresponding position of the second radiation source 112 from the second feeding end 1121 along the second radiation source 112, that is, the radiation space 100 is formed based on a dual coupling mode and can avoid being concave toward the microwave Doppler detection module 10 in a direction perpendicular to the connection direction of the first feeding end 1111 and the second feeding end 1121, thereby avoiding the formation of a detection dead zone in a direction perpendicular to the connection direction of the first feeding end 1111 and the second feeding end 1121, which is beneficial to improving the detection stability and applicability of the microwave Doppler detection module 10.

[0128] Furthermore, the microwave Doppler detection module 10 has an electromagnetic reflection surface 12, wherein the first radiation source 111 and the second radiation source 112 are arranged at intervals from the electromagnetic reflection surface 12 in the space corresponding to the electromagnetic reflection surface 12, so as to form the directional radiation characteristics of the microwave Doppler detection module 10 by virtue of the reflection characteristics of the electromagnetic reflection surface 12 to electromagnetic waves. Then, the microwave Doppler detection module 10 is suitable for detecting the activities of objects in a directional space, and is beneficial to avoiding self-excitation of the microwave Doppler detection module 10 and improving the anti-interference performance of the microwave Doppler detection module 10.

[0129] Further, based on the structural relationship that the first feeding end 1111 and the second feeding end 1121 are close to each other, the first radiation source 111 extends from the first feeding end 1111 with the first feeding end 1111 as an end, and the second radiation source 112 extends from the second feeding end 1121 with the second feeding end 1121 as an end, the first radiation source 111 and the second radiation source 112 can be coupled in a dual coupling manner, and the corresponding second radiation source 112 has a line length corresponding to the first radiation source 111, then the second radiation source 112 is free from the restriction of having a minimum restricted area as a reference ground, that is, the line length of the second radiation source 112 corresponding to the first radiation source 111 has a variety of implementation structures and is not limited to a plate-like structure with a minimum restricted area, and the microwave Doppler detection module 10 has a variety of structures, which is conducive to improving the applicability of the microwave Doppler detection module 10.

[0130] Specifically, in this embodiment of the present invention, the line length of the second radiation source 112 corresponding to the first radiation source 111 is set as a columnar conductive line, wherein the line length parameter L2 of the second radiation source 112 defined between the second feeding end 1121 and the end opposite to the second feeding end 1121 satisfies: λ / 16≤L2≤λ. Correspondingly, the line length parameter L1 of the first radiation source 111 defined between the first feeding end 1111 and the end opposite to the first feeding end 1111 satisfies: λ / 16≤L1≤λ. In this way, when the second radiation source 112 with the second feeding end 1121 as the end is grounded at the second feeding end 1121, and the first radiation source 111 with the first feeding end 1111 as the end is fed at the first feeding end 1111, the first radiation source 111 and the second radiation source 112 can be coupled in a dual coupling manner.

[0131] Further, in this embodiment of the present invention, the first radiation source 111 and the second radiation source 112 are point-symmetrically arranged with respect to the midpoint of the line connecting the first feeding end 1111 and the second feeding end 1121, that is, the first radiation source 111 and the second radiation source 112 have the same shape and size, and the positional relationship between the first radiation source 111 and the second radiation source 112 satisfies that the first radiation source 111 can be rotated 180 degrees in at least one direction around the midpoint of the line connecting the first feeding end 1111 and the second feeding end 1121 to coincide with the position of the second radiation source 112. This is conducive to ensuring that the second radiation source 112 and the first radiation source 111 are coupled in a dual manner.

[0132] Specifically, in this embodiment of the present invention, the first radiation source 111 and the second radiation source 112, which are configured as columnar conductive wires, are coaxially arranged, that is, the first radiation source 111 extends from the first feeding end 1111 to the first feeding end 1111 in the direction of the second feeding end 1121, with the first feeding end 1111 as the end, along the line connecting the first feeding end 1111 and the second feeding end 1121; the second radiation source 112 extends from the second feeding end 1121 to the second feeding end 1121 in the direction of the first feeding end 1111 to the second feeding end 1121, with the second feeding end 1121 as the end, along the line connecting the first feeding end 1111 and the second feeding end 1121. In this way, a point-symmetric structural relationship is formed between the first radiation source 111 and the second radiation source 112 about the midpoint of the line connecting the first feeding end 1111 and the second feeding end 1121.

[0133] Further, the microwave Doppler detection module 10 also includes a circuit substrate 13 and a circuit unit 14 carried by the circuit substrate 13, wherein the circuit unit 14 includes an oscillating circuit unit 141 and a mixing detection unit 142, wherein the first radiation source pole 111 and the second radiation source pole 112 are electrically coupled to different poles of the oscillating circuit unit 141 at the first feeding end 1111 and the second feeding end 1121, respectively. Specifically, the first radiation source pole 111 is fed and connected to the feed pole of the oscillating circuit unit 141 at the first feeding end 1111, and the second radiation source pole 112 is electrically connected to the ground pole of the oscillating circuit unit 141 at the second feeding end 1121, wherein the mixing detection unit 142 is electrically coupled to the oscillating circuit unit 141 and the dual coupling pole 11, wherein the oscillating circuit The unit 141 allows being powered and outputs a feeding signal at its feeding pole and is grounded at its grounding pole, that is, the oscillation circuit unit 141 allows being powered and serves as an excitation signal feeding source, so that when the oscillation circuit unit 141 is powered, the first radiation source pole 111 and the second radiation source pole 112 are co-source fed by the oscillation circuit unit 141 at the first feeding end 1111 and the second feeding end 1121 respectively to emit a detection beam, and receive an echo of the detection beam, wherein the echo is received and a corresponding echo signal is generated, and the mixing detection unit 142 outputs an intermediate frequency signal corresponding to the frequency difference between the feeding signal and the echo signal, then based on the Doppler effect principle, the intermediate frequency signal corresponds to the movement of the corresponding object that reflects the detection beam to form the echo, and thus the microwave Doppler detection module 10 is suitable for detecting the movement of objects.

[0134] It is worth mentioning that the first radiation source 111 and the second radiation source 112 are respectively terminated with the first feeding end 1111 and the second feeding end 1121. When the first radiation source 111 and the second radiation source 112 are respectively fed by the oscillation circuit unit 141 at the first feeding end 1111 and the second feeding end 1121, the potential and current of the first radiation source 111 and the second radiation source 112 are in a dual distribution state. The poles 111 are coupled in a dual manner, that is, the coupling between the second radiation source pole 112 and the first radiation source pole 111 is simplified, so the corresponding data processing of the microwave Doppler detection module 10 can be simplified. For example, the correlation between the intermediate frequency signal output by the mixing detection unit 142 and the movement of the corresponding object is improved, so that the corresponding data processing of the microwave Doppler detection module 10 can be simplified, which is beneficial to reduce the cost of the microwave Doppler detection module 10 and improve the stability and accuracy of the microwave Doppler detection module 10.

[0135] In particular, in this embodiment of the present invention, the electromagnetic reflection surface 12 blocks the circuit unit 14 and the first radiation source 111 and the second radiation source 112, so that among the electromagnetic radiation generated by the mutual coupling of the first radiation source 111 and the second radiation source 112, the electromagnetic radiation from the first radiation source 111 and the second radiation source 112 toward the circuit unit 14 can be reflected by the electromagnetic reflection surface 12 to avoid interfering with the circuit unit 14, thereby helping to improve the anti-interference performance of the microwave Doppler detection module 10.

[0136] Specifically, in this embodiment of the present invention, the electromagnetic reflection surface 12 is carried on the side of the circuit substrate 13 opposite to the side carrying the circuit unit 14, that is, the corresponding conductive layer (such as a copper layer) of the side of the circuit substrate 13 opposite to the side carrying the circuit unit 14 forms the electromagnetic reflection surface 12, wherein the first radiation source 111 and the second radiation source 112 are arranged at intervals from the electromagnetic reflection surface 12 in the space corresponding to the electromagnetic reflection surface 12, so as to form the microwave Doppler by virtue of the reflection characteristics of the electromagnetic reflection surface 12 to electromagnetic waves and the structural relationship between the first radiation source 111 and the second radiation source 112 and the electromagnetic reflection surface 12 in the space corresponding to the electromagnetic reflection surface 12. The directional radiation characteristic of the detection module 10 from the electromagnetic reflection surface 12 to the first radiation source pole 111 and the second radiation source pole 112, that is, the corresponding detection direction of the microwave Doppler detection module 10 from the electromagnetic reflection surface 12 to the first radiation source pole 111 and the second radiation source pole 112, then the microwave Doppler detection module 10 is suitable for detecting the activities of objects in the directional space corresponding to the detection direction, and is beneficial to avoid the microwave Doppler detection module 10 from self-excitation, and avoid the electromagnetic radiation generated by the coupling between the first radiation source pole 111 and the second radiation source pole 112 from interfering with the circuit unit 14 carried on the circuit substrate 13, thereby improving the anti-interference performance of the microwave Doppler detection module.

[0137] That is to say, based on the dual coupling mode between the first radiation source 111 and the second radiation source 112, the microwave Doppler detection module 10 has a radiation direction corresponding to the radial direction of the line connecting the first feeding end 1111 and the second feeding end 1121, so that when the electromagnetic reflection surface 12 is set in this radiation direction, the radiation from the first radiation source 111 and the second radiation source 112 to the electromagnetic reflection surface 12 can be reflected to form the detection direction of the microwave Doppler detection module 10 from the electromagnetic reflection surface 12 to the first radiation source 111 and the second radiation source 112, and strengthen the electromagnetic radiation in this detection direction, which is beneficial to improve the detection distance of the microwave Doppler detection module 10.

[0138] In particular, the electromagnetic reflection surface 12 is preferably configured to have a size greater than or equal to λ / 4 in a direction parallel to a line connecting the first feeding end 1111 and the second feeding end 1121, and a size greater than or equal to λ / 4 in a direction perpendicular to the line, so that the reflection effect of the electromagnetic reflection surface 12 on radiation from the first radiation source 111 and the second radiation source 112 toward the electromagnetic reflection surface 12 can be enhanced.

[0139] It is worth mentioning that the electromagnetic reflection surface 12 is preferably configured to satisfy that the distance between the midpoint of the line connecting the first feeding end 1111 and the second feeding end 1121 is greater than or equal to λ / 32, so that the reflection effect of the electromagnetic reflection surface 12 on the radiation from the first radiation source pole 111 and the second radiation source pole 112 toward the electromagnetic reflection surface 12 can be enhanced, thereby facilitating improving the detection distance of the microwave Doppler detection module 10.

[0140] Furthermore, the microwave Doppler detection module 10 also includes a first feed line 15 and a second feed line 16, wherein the first radiation source 111 is electrically coupled to the feed of the oscillation circuit unit 141 at the first feed end 1111 via the first feed line 15, and the second radiation source 112 is electrically connected to the ground of the oscillation circuit unit 141 at the second feed end 1121 via the second feed line 16, so that a circuit connection structure between the first radiation source 111 and the second radiation source 112 and the circuit unit 14 is formed by the first feed line 15 and the second feed line 16, and the first radiation source 111 and the second radiation source 112 are supported by the first feed line 15 and the second feed line 16 to form a structural relationship in which the first radiation source 111 and the second radiation source 112 are arranged at intervals from the electromagnetic reflection surface 12 in the space corresponding to the same surface of the electromagnetic reflection surface 12.

[0141] Specifically, in this embodiment of the present invention, the first radiation source 111 extends integrally from the first feeding end 1111 to the first feeding line 15, and the second radiation source 112 extends integrally from the second feeding end 1121 to the second feeding line 16, thereby simplifying the structure of the microwave Doppler detection module 10 and facilitating the impedance consistency of the microwave Doppler detection module 10 and facilitating the impedance matching of the microwave Doppler detection module 10.

[0142] In particular, based on the adjustment of the positional relationship between the first radiation source pole 111 and the second radiation source pole 112, the radiation space 100 can be adjusted to correspondingly change the detection angle and direction of the microwave Doppler detection module 10 from the electromagnetic reflection surface 12 to the first radiation source pole 111 and the second radiation source pole 112, thereby improving the applicability of the microwave Doppler detection module 10.

[0143] Specifically, referring to the accompanying drawings of the present invention, Figure 4A and Figure 4BAs shown, based on the adjustment of the positional relationship between the first radiation source 111 and the second radiation source 112, the microwave Doppler detection module 10 according to two variant embodiments of the above-mentioned embodiment of the present invention is illustrated. Relative to the above-mentioned embodiment of the present invention, in these two variant embodiments of the present invention, the positional relationship between the first radiation source 111 and the second radiation source 112 is adjusted relative to the above-mentioned embodiment of the present invention by rotating and adjusting the first radiation source 111 and the second radiation source 112 around the first feeding end 1111 and the second feeding end 1121 respectively.

[0144] Specifically, corresponding to Figure 4A In this variant embodiment of the present invention, corresponding to the coaxial positional relationship between the first radiation source 111 and the second radiation source 112 in the above embodiment, the first radiation source 111 and the second radiation source 112 are rotated and adjusted around the first feeding end 1111 and the second feeding end 1121 in the direction away from the electromagnetic reflection surface 12. That is, the first radiation source 111 is configured as a columnar conductive line extending from the first feeding end 1111 to the first feeding end 1111 as an end, and in the direction of the second feeding end 1121 to the first feeding end 1111 and away from the electromagnetic reflection surface 12, and the second radiation source 112 is configured as a columnar conductive line extending from the second feeding end 1121 to the second feeding end 1121 as an end, and in the direction of the first feeding end 1111 to the second feeding end 1121 and away from the electromagnetic reflection surface 12. In this way, in the direction away from the electromagnetic reflection surface 12, the angle between the first radiation source pole 111 and the second radiation source pole 112 is less than 180 degrees, and the corresponding detection angle of the microwave Doppler detection module 10 from the electromagnetic reflection surface 12 to the first radiation source pole 111 and the second radiation source pole 112 is reduced relative to the above embodiment.

[0145] Accordingly, corresponding to Figure 4BIn this variant embodiment of the present invention, corresponding to the coaxial positional relationship of the first radiation source 111 and the second radiation source 112 in the above embodiment, the first radiation source 111 and the second radiation source 112 are rotated and adjusted around the first feeding end 1111 and the second feeding end 1121 respectively in the direction close to the electromagnetic reflection surface 12. That is, the first radiation source 111 is configured as a columnar conductive line extending from the first feeding end 1111 to the first feeding end 1111 as an end, and in the direction of the second feeding end 1121 to the first feeding end 1111 and in the direction close to the electromagnetic reflection surface 12, and the second radiation source 112 is configured as a columnar conductive line extending from the second feeding end 1121 to the second feeding end 1121 as an end, and in the direction of the first feeding end 1111 to the second feeding end 1121 and in the direction close to the electromagnetic reflection surface 12. In this way, in the direction close to the electromagnetic reflection surface 12, the angle between the first radiation source pole 111 and the second radiation source pole 112 is less than 180 degrees, and the corresponding detection angle of the microwave Doppler detection module 10 from the electromagnetic reflection surface 12 to the first radiation source pole 111 and the second radiation source pole 112 is increased relative to the above embodiment.

[0146] It can be understood that, based on the structural relationship that the first radiation source 111 extends from the first feeding end 1111 to the first feeding end 1111 as an end and at the second feeding end 1121 in the direction toward the first feeding end 1111 and in the direction close to the electromagnetic reflection surface 12, and the second radiation source 112 extends from the second feeding end 1121 to the second feeding end 1121 as an end and at the first feeding end 1111 to the second feeding end 1121 and in the direction close to the electromagnetic reflection surface 12, the first radiation source 111 and the second radiation source 112 can also be arranged in a curved manner, and the present invention is not limited to this. For example, the first radiation source 111 is a columnar arc-shaped conductive line extending from the first feeding end 1111 to the first feeding end 1111 as an end, and in a direction from the second feeding end 1121 to the first feeding end 1111 and in a direction close to the electromagnetic reflection surface 12; the second radiation source 112 is a columnar arc-shaped conductive line extending from the second feeding end 1121 to the second feeding end 1121 as an end, and in a direction from the first feeding end 1111 to the second feeding end 1121 and in a direction close to the electromagnetic reflection surface 12. That is to say, the arc shape of the first radiation source pole 111 is the result of nonlinear extension in the direction of the line from the second feeding end 1121 to the first feeding end 1111 and the direction close to the electromagnetic reflection surface 12. Similarly, the arc shape of the second radiation source pole 112 is the result of nonlinear extension in the direction of the line from the first feeding end 1111 to the second feeding end 1121 and the direction close to the electromagnetic reflection surface 12, including but not limited to the arc formed by bending in the direction biased toward the electromagnetic reflection surface 12, and the arc formed by bending in the direction deviating from the electromagnetic reflection surface 12.

[0147] It is worth mentioning that based on the adjustment of the shapes of the second radiation source 112 and the first radiation source 111, such as adjusting the shapes of the second radiation source 112 and the first radiation source 111 in a bending manner, while maintaining the line length parameter L2 of the second radiation source 112 to satisfy λ / 16≤L2≤λ, and the line length parameter L1 of the first radiation source 111 to satisfy λ / 16≤L1≤λ, the size of the microwave Doppler detection module 10 can be further reduced, that is, while ensuring the coupling between the second radiation source 112 and the first radiation source 111 in a dual manner, it is beneficial to improve the applicability of the microwave Doppler detection module 10 by reducing the size of the microwave Doppler detection module 10.

[0148] Specifically, referring to the accompanying drawings of the present invention, FIG. 5A to FIG. 5CAs shown, the microwave Doppler detection module 10 according to three variant embodiments of the above-mentioned embodiment of the present invention is illustrated. Relative to the above-mentioned embodiment of the present invention, in these three variant embodiments of the present invention, the shapes of the second radiation source pole 112 and the first radiation source pole 111 are adjusted relative to the above-mentioned embodiment of the present invention.

[0149] Corresponds to Figure 5A In this variant embodiment of the present invention, corresponding to the coaxial positional relationship between the first radiation source 111 and the second radiation source 112 in the above embodiment, the first radiation source 111 extends from the first feeding end 1111 in a direction from the second feeding end 1121 to the first feeding end 1111 and in a direction close to the electromagnetic reflection surface 12; wherein the second radiation source 112 extends from the second feeding end 1121 to the second feeding end 1121 in a direction from the first feeding end 1111 to the second feeding end 1121 and in a direction close to the electromagnetic reflection surface 12, so as to form a structural relationship in which the second radiation source 112 is point-symmetrical with the first radiation source 111 about the midpoint of the line connecting the first feeding end 1111 and the second feeding end 1121, so that while maintaining the line length parameter L2 of the second radiation source 112 satisfying λ / 16≤L2≤λ, and the line length parameter L1 of the first radiation source 111 satisfying λ / 16≤L1≤λ, the sizes of the second radiation source 112 and the first radiation source 111 in the direction parallel to the line connecting the first feeding end 1111 and the second feeding end 1121 are reduced.

[0150] Corresponds to Figure 5BIn this variant embodiment of the present invention, corresponding to the coaxial positional relationship between the first radiation source 111 and the second radiation source 112 in the above embodiment, the first radiation source 111 extends from the first feeding end 1111 in a direction from the second feeding end 1121 to the first feeding end 1111, in a direction away from the electromagnetic reflection surface 12, and in a direction of a line from the first feeding end 1111 to the second feeding end 1121, wherein the second radiation source 112 extends from the second feeding end 1121 to the second feeding end 1121, in a direction from the first feeding end 1111 to the second feeding end 1121, in a direction away from the electromagnetic reflection surface 12, and in a direction of a line from the second feeding end 1121 to the first feeding end 1111. In this way, the second radiation source 112 is formed in a point-symmetric structural relationship with the first radiation source 111 about the midpoint of the line connecting the first feeding end 1111 and the second feeding end 1121, so that while maintaining the line length parameter L2 of the second radiation source 112 satisfying λ / 16≤L2≤λ, and the line length parameter L1 of the first radiation source 111 satisfying λ / 16≤L1≤λ, the sizes of the second radiation source 112 and the first radiation source 111 in the direction parallel to the line connecting the first feeding end 1111 and the second feeding end 1121 are reduced.

[0151] Accordingly, corresponding to Figure 5CIn this variant embodiment of the present invention, corresponding to the coaxial positional relationship of the first radiation source 111 and the second radiation source 112 in the above embodiment, the first radiation source 111 extends from the first feeding end 1111 in the direction from the second feeding end 1121 to the first feeding end 1111, in the direction close to the electromagnetic reflection surface 12, and in the direction of the line from the first feeding end 1111 to the second feeding end 1121, wherein the second radiation source 112 extends from the second feeding end 1121 to the second feeding end 1121, in the direction of the line from the first feeding end 1111 to the second feeding end 1121, in the direction close to the electromagnetic reflection surface 12, and in the direction of the line from the second feeding end 1121 to the first feeding end 1111. In this way, the second radiation source 112 is formed in a point-symmetric structural relationship with the first radiation source 111 at the midpoint of the line between the first feeding end 1111 and the second feeding end 1121. Thus, while maintaining that the line length parameter L2 of the second radiation source 112 satisfies λ / 16≤L2≤λ, and the line length parameter L1 of the first radiation source 111 satisfies λ / 16≤L1≤λ, the sizes of the second radiation source 112 and the first radiation source 111 in a direction parallel to the line connecting the first feeding terminal 1111 and the second feeding terminal 1121 are reduced.

[0152] It can be understood that, based on the adjustment of the shapes of the second radiation source 112 and the first radiation source 111, the positional relationship between the first radiation source 111 and the second radiation source 112 is also adjusted, and the size of the corresponding microwave Doppler detection module 10 and the detection angle and direction from the electromagnetic reflection surface 12 to the first radiation source 111 and the second radiation source 112 can be adjusted, wherein the shape and size of the first radiation source 111 and the second radiation source 112 have a variety of deformations, and the first radiation source 111 and the second radiation source 112 meet the following requirements: the second feeding end 112 1 and the first feeding end 1111 are close to each other within a distance less than or equal to λ / 4; the second radiation source 112 extends from the second feeding end 1121 with the second feeding end 1121 as an end, and the first radiation source 111 extends from the first feeding end 1111 with the first feeding end 1111 as an end; and the first radiation source 111 and the second radiation source 112 have a line length greater than or equal to λ / 16 from the first feeding end 1111 and the second feeding end 1121 respectively, and the shape and size of the first radiation source 111 and the second radiation source 112 do not constitute a limitation to the present invention.

[0153] That is to say, the above embodiments are only examples, and based on the dual coupling mode, the microwave Doppler detection module 10 includes at least one pair of the dual coupling poles 11, wherein the second radiation source pole 112 of each pair of the dual coupling poles 11 extends from the second feeding end 1121 with the second feeding end 1121 as the end, and the first radiation source pole 111 of each pair of the dual coupling poles 11 extends from the first feeding end 1111 with the first feeding end 1111 as the end, wherein the first radiation source pole 111 and the second radiation source pole 112 of each pair of the dual coupling poles 11 have various shapes and sizes, and preferably satisfy that the first radiation source pole 111 and the second radiation source pole 112 of each pair of the dual coupling poles 11 are point-symmetrically arranged with the midpoint of the line connecting the first feeding end 1111 and the second feeding end 1121.

[0154] Further reference is made to the accompanying drawings of the present invention. Figure 6 As shown, the three-dimensional structure of the microwave Doppler detection module 10 according to a variant embodiment of the above embodiment of the present invention is schematically shown. In particular, in this variant embodiment of the present invention, the second feeder 16 is arranged to surround the first feeder 15 to form an electromagnetic shielding cavity 161, so that when the second feeder 16 is grounded, the effect of the coupling between the second feeder 16 and the first feeder 15 on the coupling between the first radiation source 111 and the second radiation source 112 is reduced, and the interference of external electromagnetic radiation on the first feeder 15 is shielded, which is conducive to improving the anti-interference performance of the microwave Doppler detection module 10.

[0155] Preferably, the second feed line 16 arranged in the form of surrounding the first feed line 15 is coaxial with the first feed line 15, so that when the first radiation source 111 is fed at the first feeding end 1111 through the first feed line 15, and the second radiation source 112 is fed at the second feeding end 1121 through the second feed line 16, it is beneficial to couple the first radiation source 111 and the second radiation source 112 in a dual manner.

[0156] It is worth mentioning that in some embodiments of the present invention, the second feed line 16 and the feed property 16 are implemented as a shielded wire that surrounds the first feed line 15 with the second feed line 16, wherein the shielding wire is pluggably arranged to form a pluggable circuit connection structure between the first radiation source electrode 111 and the second radiation source electrode 112 and the circuit unit 14, which is conducive to the assembly of the microwave Doppler detection module 10.

[0157] To further describe the present invention, the accompanying drawings of the present invention are Figure 6The structure of the microwave Doppler detection module 10 of the corresponding variant embodiment is optimized based on the existing manufacturing process and is conducive to being manufactured based on the existing manufacturing process. Specifically, refer to the accompanying drawings of the specification of the present invention. 7A to 7C As shown in the accompanying drawings of the specification of the present invention Figure 6 Different optimized structures of the microwave Doppler detection module 10 of the corresponding variant embodiment are illustrated, wherein in the three optimized structures of the present invention, the second radiation source 112 of the microwave Doppler detection module 10 is conductively welded to the second feeder 16 at the second feeder end 1121, wherein by welding, the second radiation source 112 can realize conductive connection and fixation with the second feeder 16 based on the existing process, and compared with the one-piece molding process, the conductive connection and fixation between the second feeder 16 and the second radiation source 112 which is arranged in the form of surrounding the first feeder 15 and has a tubular structure is more efficient and has a relatively low process cost. Preferably, the second radiation source 112 is conductively welded to the second feeder 16 by laser spot welding, so that when the second radiation source 112 is welded and fixed to the second feeder 16, it is beneficial to improve the welding efficiency and the consistency and stability of the conductive welding between the second radiation source 112 and the second feeder 16.

[0158] Furthermore, in the three optimized structures of the present invention, the microwave Doppler detection module 10 further includes a sleeve 17, wherein the sleeve 17 is encircled by the first feed line 15 and the electromagnetic shielding cavity 161 embedded in the second feed line 16, so as to help maintain the position stability between the first feed line 15 and the second feed line 16, thereby ensuring the structural stability of the microwave Doppler detection module 10, and then maintaining the performance stability of the microwave Doppler detection module 10. It can be understood that the setting of the bushing 17 maintains the structural and performance stability of the microwave Doppler detection module 10. Since the bushing 17 is encircled on the first feeder 15 and embedded in the second feeder 16, that is, the bushing 17 is filled between the first feeder 15 and the second feeder 16 surrounding the first feeder 15 at the position of the first feeder end 1111 close to the first radiation source 111, the dielectric environment of the electromagnetic shielding cavity 161 can be stably maintained and has a stable dielectric constant, which is conducive to maintaining the performance stability of the microwave Doppler detection module 10 during use. Preferably, the bushing 17 is a Teflon bushing, which ensures the stability of the microwave Doppler detection module 10 during use based on the corrosion resistance and anti-aging properties of Teflon, and is conducive to the production and assembly of the microwave Doppler detection module 10 based on the low friction coefficient of Teflon.

[0159] In particular, in the three optimized structures of the present invention, the fixing structure of the second feeder 16 having a tubular structure on the circuit substrate 13 and the electrical connection structure of the first feeder 15 and the circuit unit 14 are exemplified, corresponding to Fig. 7A In this optimized structure of the present invention, the second feeder 16 is further integrally extended / welded with at least one solder leg 165, wherein the solder leg 165 is inserted into the circuit substrate 13 and is further fixed by soldering to the side of the circuit substrate 13 provided with the electromagnetic reflection surface 12 and / or the side provided with the circuit unit 14. The first feeder 15 penetrates the circuit substrate and is fixed and electrically connected to the circuit unit 14 by soldering.

[0160] Corresponds to Figure 7B In this optimized structure of the present invention, the second feeder 16 is further integrally extended / welded with at least one solder leg 165, wherein the solder leg 165 is bent and arranged perpendicular to the second feeder 16 and fixed to the side of the circuit substrate 13 where the electromagnetic reflection surface 12 is arranged by soldering. The first feeder 15 penetrates the circuit substrate 13 and is fixed and electrically connected to the circuit unit 14 by soldering.

[0161] Corresponds to Figure 7C In this optimized structure of the present invention, the end face of the second feeder 16 away from the second feeder terminal 1121 is welded and fixed to the circuit substrate 13. For example, a corresponding pad is provided on one side of the circuit substrate 13 provided with the electromagnetic reflection surface 12, and the end face of the second feeder 16 away from the second feeder terminal 1121 is welded and fixed to the pad to form a state where the end face of the second feeder 16 away from the second feeder terminal 1121 is welded and fixed to the circuit substrate 13; or the end face of the second feeder 16 away from the second feeder terminal 1121 is directly fixed to the electromagnetic reflection surface 12 by welding to form a state where the end face of the second feeder 16 away from the second feeder terminal 1121 is welded and fixed to the circuit substrate 13.

[0162] In particular, different from the structure in the above-mentioned embodiment where the first radiation source 111 and the second radiation source 112 are point-symmetrically arranged with respect to the midpoint of the line connecting the first feeding end 1111 and the second feeding end 1121, in some embodiments of the present invention, the second radiation source 112 is arranged in a tubular shape and extends from the second feeding end 1121 in an extending direction of the mirror image of the first radiation source 111, that is, the extending direction of the second radiation source 112 from the second feeding end 1121 corresponds to the extending direction of the mirror image of the first radiation source 111 in the direction from the first feeding end 1111 to the second feeding end 1121. For example, when the first radiation source 111 corresponds to Figure 6 It is shown that when the first feeding end 1111 sequentially extends in the direction from the second feeding end 1121 to the first feeding end 1111, extends in the direction close to the electromagnetic reflection surface 12, and when the first feeding end 1111 extends in the direction of a line connecting the second feeding end 1121 to the first feeding end 1121, the mirror image sequence of the first radiation source 111 in the direction from the first feeding end 1111 to the second feeding end 1121 is in the direction of a line connecting the first feeding end 1111 to the second feeding end 1121, in the direction close to the electromagnetic reflection surface 12, and in the direction of a line connecting the second feeding end 1121 to the first feeding end 1111, that is, the second radiation source 112 extends in the direction of a line connecting the first feeding end 1111 to the second feeding end 1121 corresponding to the mirror image sequence of the first radiation source 111 in the direction of a line connecting the first feeding end 1111 to the second feeding end 1121, in the direction close to the electromagnetic reflection surface 12, and in the direction of a line connecting the second feeding end 1121 to the first feeding end 1111. In this way, a dual coupling mode between the first radiation source 111 and the second radiation source 112 can also be formed.

[0163] It is worth mentioning that when the second radiation source 112 is configured to be tubular, the second radiation source 112 can be formed by cutting and bending the second feeder line 16 which is also configured to be tubular, and can be integrally extended to the second feeder line 16, that is, the second radiation source 112 can be integrally extended from the second feeder line 16 by a simple process of cutting and bending the second feeder line 16, which is beneficial to ensure a stable and consistent connection between the second radiation source 112 and the second feeder line 16 based on a simple process.

[0164] It can be understood that, by appropriately cutting the tubular structure on one side of the tubular structure, the tubular structure can be bent in two opposite directions where the cutting sections are close to or away from the cutting surface, wherein when the tubular structure is bent in the direction where the cutting sections are close to the cutting surfaces, a bent tube structure in which the cutting surfaces are in contact can be formed, and when the tubular structure is bent in the direction where the cutting sections are away from the cutting surfaces, a segmented tubular structure can be formed. Therefore, in the description of the present invention, the understanding of the second radiation source 112 being configured as a tubular structure should be understood as the second radiation source 112 including at least one tubular structure, that is, the segmented tubular structure / bent tube structure formed by bending the tubular structure in the direction where the cutting section of the tubular structure is away from / close to the cutting surface also constitutes the category of tubular.

[0165] Specifically, referring to the accompanying drawings of the present invention, Figures 8A to 8C Based on the idea of ​​setting the second radiation source 112 to be tubular, the three-dimensional structure of the microwave Doppler detection module 10 according to different variant embodiments of the above-mentioned embodiment of the present invention is illustrated.

[0166] Corresponds to Fig. 8A and 8B In these two variant embodiments of the present invention, the first radiation source 111 extends from the first feeding end 1111 in the direction from the second feeding end 1121 to the first feeding end 1111, in the direction close to the electromagnetic reflection surface 12, and in the direction of the line from the first feeding end 1111 to the second feeding end 1121. Correspondingly, the second radiation source 112 is configured as a tube and extends integrally from the second feeding end 1121 corresponding to the extension direction of the mirror image of the first radiation source 111 to the second feeding line 16 which is also configured as a tube, that is, the second radiation source 112 extends integrally to the second feeding line 16 from the second feeding end 1121 corresponding to the mirror image of the first radiation source 111 in the direction of the line from the first feeding end 1111 to the second feeding end 1121, in the direction close to the electromagnetic reflection surface 12, and in the direction of the line from the second feeding end 1121 to the first feeding end 1111. Differently, corresponding to Fig. 8A In the microwave Doppler detection module 10 of the illustrated variant embodiment, the second radiation source electrode 112 is formed by extending from the second feed line 16 in an integral manner by cutting and bending, and is a curved tube structure with the cutting surfaces being in contact with each other. Figure 8B In the microwave Doppler detection module 10 of the illustrated variant embodiment, the second radiation source 112 formed by integrally extending from the second feed line 16 by cutting and bending is a segmented tubular structure.

[0167] Corresponds to Figure 8CIn this variant embodiment of the present invention, the first radiation source 111 extends from the first feeding end 1111 in the direction of the second feeding end 1121 toward the first feeding end 1111, and in the direction close to the electromagnetic reflection surface 12. Correspondingly, the second radiation source 112 is configured as a tube and extends integrally from the second feeding end 1121 in the extending direction corresponding to the mirror image of the first radiation source 111 to the second feeding line 16 which is also configured as a tube, that is, the second radiation source 112 extends integrally from the second feeding end 1121 in the direction of the line connecting the first feeding end 1111 to the second feeding end 1121 corresponding to the mirror image of the first radiation source 111, and in the direction close to the electromagnetic reflection surface 12 to the second feeding line 16, wherein the second radiation source 112 integrally extended from the second feeding line 16 in the manner of cutting and bending is a segmented tubular structure.

[0168] Further, in the drawings of the specification of the present invention, Figures 8A to 8C In the corresponding three variant embodiments, the end of the second feeder 16 away from the second feeding end 1121 is extended along the radial direction of the second feeder 16 to be horn-shaped, wherein the horn-shaped end of the second feeder 16 is welded and fixed to the circuit substrate 13. For example, a corresponding pad is provided on one side of the circuit substrate 13 provided with the electromagnetic reflection surface 12, and the horn-shaped end of the second feeder 16 away from the second feeding end 1121 is welded and fixed to the pad to form a state in which the end of the second feeder 16 away from the second feeding end 1121 is welded and fixed to the circuit substrate 13; or the horn-shaped end of the second feeder 16 away from the second feeding end 1121 is directly fixed to the electromagnetic reflection surface 12 by welding to form a state in which the end of the second feeder 16 away from the second feeding end 1121 is welded and fixed to the circuit substrate 13.

[0169] In particular, based on the state in which the second radiation source pole 112 is grounded in the above-mentioned embodiment, in some embodiments of the present invention, the first radiation source pole 111 is further grounded to reduce the impedance of the microwave Doppler detection module, and the quality factor (i.e., Q value) of the microwave Doppler detection module is improved, which is beneficial to improving the anti-interference ability of the microwave Doppler detection module.

[0170] Referring to the accompanying drawings of the present invention Fig. 9As shown, the three-dimensional structure of the microwave Doppler detection module 10 according to another variant embodiment of the above embodiment of the present invention is illustrated. In particular, relative to the above embodiment of the present invention, in this variant embodiment of the present invention, the first radiation source pole 111 is further electrically connected to the second feed line 16 and is grounded.

[0171] Specifically, in this variant embodiment of the present invention, the second feed line 16, which is arranged in the form of surrounding the first feed line 15 and is coaxial with the first feed line 15, is further provided with a pair of slots 162 from one end connected to the second radiation source 112 along the direction of the first feed line 111, wherein the pair of slots 162 define a first arm 163 and a second arm 164 on the second feed line 16, that is, the first arm 163 and the second arm 164 are respectively two parts of the second feed line 16 defined between the pair of slots 162, wherein the second radiation source 112 is conductively extended from the second feeding end 1121 to the second arm 164 of the second feed line 16, wherein the first radiation source 111 is conductively extended from the first feeding end 1111 to the first arm 163 of the second feed line 16 and is conductively connected to the first feed line 15 at the first feeding end 1111, so that the first radiation source 111 is grounded.

[0172] It is worth mentioning that the pair of slots 162 of the second feed line 16 have a slot depth greater than or equal to λ / 128 from the end of the second feed line 16 connected to the second radiation source 112 along the direction of the first feed line 111, so that when the first radiation source 111 is grounded via the first arm 163 of the second feed line 16, when the first radiation source 111 is fed and excited at the first feeding end 1111 via the first feed line 15, and when the second radiation source 112 is fed at the second feeding end 1121 via the second feed line 16, it is ensured that the first radiation source 111 and the second radiation source 112 are coupled in a dual manner.

[0173] It is understandable that, based on the depth setting of the slot 162 , a corresponding impedance can be formed, so as to facilitate impedance matching between the oscillating circuit unit 141 and the first feeding line 15 , the second feeding line 16 and the dual coupling pole 11 .

[0174] In particular, in this variant embodiment of the present invention, the first radiation source 111 and the second radiation source 112 are bent once so as to reduce the sizes of the second radiation source 112 and the first radiation source 111 in a direction parallel to the line connecting the first feeding terminal 1111 and the second feeding terminal 1121 while maintaining the line length parameter L2 of the second radiation source 112 satisfying λ / 16≤L2≤λ and the line length parameter L1 of the first radiation source 111 satisfying λ / 16≤L1≤λ.

[0175] Further reference is made to the accompanying drawings of the present invention. Fig.10 As shown, based on the accompanying drawings of the specification of the present invention Fig. 9 The structural principle of the microwave Doppler detection module 10 of the above-mentioned variant embodiment corresponds to: Fig.10 Indicates the corresponding Fig. 9 An alternative structure of the microwave Doppler detection module 10 is different from Fig. 9 The electrical connection relationship of the microwave Doppler detection module 10 is shown. In this alternative structure of the present invention, the first feeding end 1111 of the first radiation source 111 is further electrically connected to the second feeding end 1121 of the second radiation source 112, wherein the first feeding line 15 is electrically connected to the first arm 163 of the second feeding line 16, so that based on the conductive connection between the first feeding line 15 and the first arm 163 of the second feeding line 16, an unbalanced feeding state of the first radiation source 111 and the second radiation source 121 is formed, so that the first radiation source 111 and the second radiation source 121 can form a dual coupling mode between the first radiation source 111 and the second radiation source 112 when being fed by the same source.

[0176] Specifically, in this alternative structure of the present invention, the first radiation source 111 and the second radiation source 112 are integrally formed as a whole, wherein the first radiation source 111 and the second radiation source 112 as a whole are mounted on the first arm 163 and the second arm 164 of the second feed line 16, so that the first feeding end 1111 and the second feeding end 1121 are the parts of the first radiation source 111 and the second radiation source 112 as a whole that are in contact with the first arm 163 and the second arm 164 of the second feed line 16 respectively, thereby forming a state in which the first radiation source 111 is electrically connected to the first arm 163 of the second feed line 16 at the first feeding end 1111, the second radiation source 112 is electrically connected to the second arm 164 of the second feed line 16 at the second feeding end 1121, and the first feeding end 1111 of the first radiation source 111 is electrically connected to the second feeding end 1121 of the second radiation source 112.

[0177] Further reference is made to the accompanying drawings of the present invention. Fig.11 As shown, based on the accompanying drawings of the specification of the present invention Fig. 9 The structural principle of the microwave Doppler detection module 10 of the above-mentioned variant embodiment corresponds to: Fig.11 Indicates the corresponding Fig. 9 Another alternative structure of the microwave Doppler detection module 10 is different from Fig. 9 The structure of the microwave Doppler detection module 10 shown in the alternative structure of the present invention is equivalent to the principle of setting the corresponding depth of the groove 162. The shape and number of the groove 162 can be further set to ensure that the first radiation source pole 111 and the second radiation source pole 112 are coupled in a dual manner.

[0178] Specifically, in this alternative structure of the present invention, different from Fig. 9 The structure of the microwave Doppler detection module 10 is shown in FIG. Fig. 9 A pair of slot positions corresponding to the slots 162 are provided with a plurality of slots 162 , wherein the depth and width of the corresponding slots 162 are allowed to be set differently, so as to ensure that the first radiation source 111 and the second radiation source 112 can be coupled in a dual manner.

[0179] Further reference is made to the accompanying drawings of the present invention. Fig.12 As shown, based on the accompanying drawings of the specification of the present invention Fig.10 The structural principle of the microwave Doppler detection module 10 in the above-mentioned embodiment corresponds to: Fig.12 Indicates the corresponding Fig.10An alternative structure of the microwave Doppler detection module 10 is different from Fig.10 The structure of the microwave Doppler detection module 10 is shown in the figure. In this alternative structure of the present invention, the first radiation source 111 and the second radiation source 112 are integrally designed and are installed on the second feed line 16 through a pair of the slots 162, that is, the first radiation source 111 is electrically connected to the first arm 163 and the second arm 164 of the second feed line 16 at the first feeding end 1111, and the second feeding end 1121 of the second radiation source 112 is electrically connected to the first arm 163 and the second arm 164 of the second feed line 16 at the same time, and the first feeding end 1111 of the first radiation source 111 is electrically connected to the first arm 163 and the second arm 164 of the second feed line 16 at the same time. The first arm 163 of the second feed line 16 is electrically connected to the first feed line 15 at a position deviated from the central axis of the first arm 163, so that an unbalanced feeding state of the first radiation source 111 and the second radiation source 121 is formed based on the conductive connection between the first feed line 15 and the first arm 163 of the second feed line 16, so that the first radiation source 111 and the second radiation source 121 can form a dual coupling mode between the first radiation source 111 and the second radiation source 112 when being fed by the same source.

[0180] Specifically, in this alternative structure of the present invention, the second feeder 16 is configured as a detachable tubular structure, that is, the second feeder 16 is a tubular structure assembled by mutual snap-fitting or other detachable methods, so as to facilitate the first radiation source 111 and the second radiation source 112 designed as a whole to be installed on the second feeder 16 through a pair of the slots 162, and to facilitate the electrical connection of the first feeder 15 to the first arm 163 of the second feeder 16.

[0181] It can be understood that, based on the combination of features of different embodiments, in some embodiments of the present invention, by electrically connecting the first arm 163 of the second feed line 16 to the first feed line 15 at a position deviated from the central axis of the first arm 163, the first radiation source 111 and the second radiation source 112 are allowed to extend from the pair of slots 163 to the first arm 163 and the second arm 164 respectively at the same time, so that an unbalanced feeding state of the first radiation source 111 and the second radiation source 121 can also be formed, so that the first radiation source 111 and the second radiation source 121 can form a dual coupling mode between the first radiation source 111 and the second radiation source 112 when being fed by the same source, and there is no requirement for whether the first feeding end 1111 of the first radiation source 111 and the feeding end 1121 of the second radiation source 112 are connected, that is, the first radiation source 111 and the second radiation source 112 are allowed to be separately provided instead of adopting an integrated design.

[0182] Further reference is made to the accompanying drawings of the present invention. Fig.13 As shown, based on the idea of ​​setting the second feeder 16 as a detachable tubular structure, Fig.13 Indicates the corresponding Fig. 9 Another alternative structure of the microwave Doppler detection module 10 is different from Fig. 9 In the structure of the microwave Doppler detection module 10 shown in the figure, in this alternative structure of the present invention, the second feeder line 16 is configured as a detachable square tubular structure, that is, the second feeder line 16 is a square tubular structure assembled by mutual snap-fitting or other detachable methods.

[0183] Further reference is made to the accompanying drawings of the present invention. Fig.14 As shown, based on the idea of ​​setting the second feeder 16 as a detachable tubular structure, Fig.14 Indicates the corresponding Fig.13A further deformation structure of the microwave Doppler detection module 10, wherein in this deformation structure of the present invention, the first radiation source 111 is further extended at one end opposite to the first feeding end 1111 in two opposite directions perpendicular to the line connecting the first feeding end 1111 and the second feeding end 1121, and the second radiation source 112 is further extended at one end opposite to the second feeding end 1121 in two opposite directions perpendicular to the line connecting the first feeding end 1111 and the second feeding end 1121, so that when the first radiation source 111 and the second radiation source 112 are coupled in a dual manner, the energy accumulation of the end of the first radiation source 111 opposite to the first feeding end 1111 and the energy accumulation of the end of the second radiation source 112 opposite to the second feeding end 1121 are suppressed, thereby facilitating the maintenance of the stability of the microwave Doppler detection module 10.

[0184] Further reference is made to the accompanying drawings of the present invention. Fig.15 As shown, based on the idea of ​​setting the second feeder 16 as a detachable tubular structure, and the principle that the first arm 163 of the second feeder 16 is electrically connected to the first feeder 15 at a position deviated from the central axis of the first arm 163, Fig.15 Indicates the corresponding Fig. 9 Another alternative structure of the microwave Doppler detection module 10 is different from Fig. 9 The structure of the microwave Doppler detection module 10 is shown in FIG. 1 . In this alternative structure of the present invention, the second feed line 16 is configured as a detachable square tubular structure, the first radiation source 111 is electrically connected to the first arm 163 and the second arm 164 of the second feed line 16 at the first feeding end 1111 at the same time, and the second radiation source 112 is electrically connected to the first arm 163 and the second arm 164 of the second feed line 16 at the second feeding end 1121 at the same time, wherein the first arm 163 of the second feed line 16 is electrically connected to the first feed line 15 at a position deviating from the central axis of the first arm 163, so that based on the conductive connection between the first feed line 15 and the first arm 163 of the second feed line 16, an unbalanced feeding state of the first radiation source 111 and the second radiation source 121 is formed, so that the first radiation source 111 and the second radiation source 121 can form a dual coupling mode between the first radiation source 111 and the second radiation source 112 when being fed by the same source.

[0185] That is to say, in the above embodiments, without departing from the coupling principle of duality, the features of different embodiments can be combined with each other to obtain implementation methods that are easily conceivable based on the content disclosed in the present invention but are not explicitly pointed out in the drawings.

[0186] To further disclose the present invention, reference is made to the accompanying drawings of the present invention. Fig.16 As shown, a three-dimensional structure of a microwave Doppler detection module 10A according to another embodiment of the present invention is schematically shown. Similarly, the microwave Doppler detection module 10A includes a second radiation source 112A and a first radiation source 111A, wherein the second radiation source 112A has a second feeding end 1121A, and the first radiation source 111A has a first feeding end 1111A, wherein the second feeding end 1121A and the first feeding end 1111A are close to each other within a λ / 4 distance, wherein the second radiation source 112A extends from the second feeding end 1121A with the second feeding end 1121A as an end, wherein the first radiation source 111A extends from the first feeding end 1111A with the first feeding end 1111A as an end. The first radiation source 111A is configured to be fed at the first feeding end 1111A, and the second radiation source 112A is configured to be fed at the second feeding end 1121A, so that when the first radiation source 111A is fed at the first feeding end 1111A and the second radiation source 112A is co-source fed at the second feeding end 1121A, the first radiation source 111A is coupled from the first feeding end 1111A along the first radiation source 111A to the corresponding position of the second radiation source 112A from the second feeding end 1121A along the second radiation source 112A, thereby forming a dual coupling mode between the first radiation source 111A and the second radiation source 112A.

[0187] Different from the previous embodiment, in this embodiment of the present invention, the microwave Doppler detection module 10A further includes a dielectric substrate 18A, wherein the first radiation source 111A and the second radiation source 112A are carried on the same surface of the dielectric substrate 18A in the form of a microstrip line, so that the shape and size of the corresponding first radiation source 111A and the second radiation source 112A are easy to be realized based on the microstrip line process.

[0188] Similarly, the second radiation source 112A and the first radiation source 111A, which are arranged in the form of a microstrip line, are arranged to satisfy: a line length parameter L1 of the first radiation source 111A defined between the first feeding end 1111A and an end opposite to the first feeding end 1111A is in the range of λ / 16≤L1≤λ; a line length parameter L2 of the second radiation source 112A defined between the second feeding end 1121A and an end opposite to the second feeding end 1121A is in the range of λ / 16≤L2≤λ.

[0189] The microwave Doppler detection module 10A also includes a circuit substrate 13A and a circuit unit 14A carried by the circuit substrate 13A, wherein the circuit unit 14A includes an oscillating circuit unit 141A and a mixing detection unit 142A, wherein the first radiation source pole 111A and the second radiation source pole 112A are electrically coupled to different poles of the oscillating circuit unit 141A at the first feeding end 1111A and the second feeding end 1121A, respectively. Specifically, the first radiation source pole 111A is fed and connected to the feed pole of the oscillating circuit unit 141A at the first feeding end 1111A, and the second radiation source pole 112A is electrically connected to the ground pole of the oscillating circuit unit 141A at the second feeding end 1121A, wherein the mixing detection unit 142A is electrically coupled to the oscillating circuit unit 141A and the dual coupling pole 11A, wherein the oscillating The oscillation circuit unit 141A allows being powered and outputs a feeding signal at its feeding pole and is grounded at its grounding pole, that is, the oscillation circuit unit 141A allows being powered and serves as an excitation signal feeding source, so that when the oscillation circuit unit 141A is powered, the first radiation source 111A and the second radiation source 112A are co-source fed by the oscillation circuit unit 141A at the first feeding end 1111A and the second feeding end 1121A respectively to emit a detection beam, and receive an echo of the detection beam, wherein the echo is received and a corresponding echo signal is generated, and the mixing detection unit 142A outputs an intermediate frequency signal corresponding to the frequency difference between the feeding signal and the echo signal, then based on the Doppler effect principle, the intermediate frequency signal corresponds to the movement of the corresponding object that reflects the detection beam to form the echo, and thus the microwave Doppler detection module 10A is suitable for detecting the movement of objects.

[0190] Further, the first radiation source 111A and the second radiation source 112A are point-symmetrically arranged with respect to the midpoint of the line connecting the first feeding end 1111A and the second feeding end 1121A, that is, the first radiation source 111A and the second radiation source 112A have the same shape and size, and the positional relationship between the first radiation source 111A and the second radiation source 112A satisfies that the first radiation source 111A can be rotated 180 degrees in at least one direction around the midpoint of the line connecting the first feeding end 1111A and the second feeding end 1121A to coincide with the position of the second radiation source 112A. This is conducive to ensuring that the second radiation source 112A and the first radiation source 111A are coupled in a dual manner.

[0191] Specifically, in this embodiment of the present invention, the dielectric substrate 18A is disposed in parallel with the circuit substrate 13A and spaced apart from the circuit substrate 13A.

[0192] Specifically, the microwave Doppler detection module 10A further includes a first feed line 15A and a second feed line 16A, wherein the first radiation source 111A is electrically coupled to the feed of the oscillation circuit unit 141A at the first feed end 1111A via the first feed line 15A, wherein the second radiation source 112A is electrically connected to the ground potential of the oscillation circuit unit 141A at the second feed end 1121A via the second feed line 16A, thereby forming a circuit connection structure between the first radiation source 111A, the second radiation source 112A and the circuit unit 14A, and the dielectric substrate 18A and the circuit substrate 13A are supported by the first feed line 15A and the second feed line 16A to support the dielectric substrate 18A carrying the first radiation source 111A and the second radiation source 112A, thereby forming a structural relationship in which the dielectric substrate 18A and the circuit substrate 13A are arranged at intervals.

[0193] In particular, in this embodiment of the present invention, the second feed line 16A and the feed property 16A are implemented as a shielded wire in which the second feed line 16A surrounds the first feed line 15A, wherein the shielding wire is pluggably arranged to form a pluggable circuit connection structure between the first radiation source 111A and the second radiation source 112A and the circuit unit 14A, thereby facilitating the assembly of the microwave Doppler detection module 10A.

[0194] Similarly, the microwave Doppler detection module 10A further has an electromagnetic reflection surface 12A carried by the circuit substrate 13A, wherein the electromagnetic reflection surface 12A is carried by the side of the circuit substrate 13A opposite to the side carrying the circuit unit 14A, wherein the first radiation source 111A and the second radiation source 112A are arranged at intervals from the electromagnetic reflection surface 12A in the space corresponding to the electromagnetic reflection surface 12A, so as to form the microwave Doppler detection module 10A by the reflection characteristics of the electromagnetic reflection surface 12A for electromagnetic waves and the structural relationship between the first radiation source 111A and the second radiation source 112A and the electromagnetic reflection surface 12A in the space corresponding to the electromagnetic reflection surface 12A. The directional radiation characteristics of the electromagnetic reflection surface 12A toward the first radiation source 111A and the second radiation source 112A, that is, the corresponding detection direction of the microwave Doppler detection module 10A from the electromagnetic reflection surface 12A toward the first radiation source 111A and the second radiation source 112A, then the microwave Doppler detection module 10A is suitable for detecting the activities of objects in the directional space corresponding to the detection direction, and is beneficial to avoid the microwave Doppler detection module 10A from self-excitation, and avoid the electromagnetic radiation generated by the coupling between the first radiation source 111A and the second radiation source 112A from interfering with the circuit unit 14A carried on the circuit substrate 13A, thereby improving the anti-interference performance of the microwave Doppler detection module.

[0195] In particular, based on the adjustment of the positional relationship between the dielectric substrate 18A and the circuit substrate 13A, the microwave Doppler detection module 10A has a different structural design, which is beneficial to improving the applicability of the microwave Doppler detection module 10A.

[0196] Specifically, referring to the accompanying drawings of the present invention, Fig.17A and 18B As shown, based on the adjustment of the positional relationship between the dielectric substrate 18A and the circuit substrate 13A, the microwave Doppler detection module 10A according to two modified embodiments of the above embodiment of the present invention is schematically illustrated.

[0197] Corresponds to Fig.17AIn this variant embodiment of the present invention, the dielectric substrate 18A is perpendicular to the circuit substrate 13A, and the line connecting the first feeding terminal 1111A and the second feeding terminal 1121A is parallel to the circuit substrate 13A. That is, based on the positional relationship of the dielectric substrate 18A and the circuit substrate 13A in the above embodiment, the dielectric substrate 18A is rotated 90 degrees with the line connecting the first feeding terminal 1111A and the second feeding terminal 1121A as an axis to form a corresponding positional relationship in which the dielectric substrate 18A is perpendicular to the circuit substrate 13A, and the line connecting the first feeding terminal 1111A and the second feeding terminal 1121A is parallel to the circuit substrate 13A.

[0198] Corresponds to Fig. 17B In this variant embodiment of the present invention, the dielectric substrate 18A is perpendicular to the circuit substrate 13A, wherein the line connecting the first feeding terminal 1111A and the second feeding terminal 1121A is perpendicular to the circuit substrate 13A. Fig.17A In the corresponding variant embodiment, the dielectric substrate 18A is perpendicular to the circuit substrate 13A, and the line connecting the first feeding end 1111A and the second feeding end 1121A is parallel to the positional relationship of the circuit substrate 13A. The dielectric substrate 18A is rotated 90 degrees around the midpoint of the line connecting the first feeding end 1111A and the second feeding end 1121A in the plane where the dielectric substrate 18A is located, so as to form a positional relationship in which the dielectric substrate 18A is perpendicular to the circuit substrate 13A, and the line connecting the first feeding end 1111A and the second feeding end 1121A is perpendicular to the circuit substrate 13A.

[0199] It is worth mentioning that based on the adjustment of the shapes of the second radiation source 112A and the first radiation source 111A, such as by extending the second radiation source 112A and the first radiation source 111A to the other side of the dielectric substrate 18A, while maintaining the second radiation source 112A and the first radiation source 111A to meet the requirement that the line length from the second feeding end 1121A and the first feeding end 1111A respectively is greater than or equal to λ / 16, the size of the dielectric substrate 18A can be reduced to reduce the size of the microwave Doppler detection module 10A.

[0200] Specifically, referring to the accompanying drawings of the present invention, FIG. 18A to FIG. 19BAs shown, based on the structural relationship that the second radiation source 112A corresponds to the midpoint of the line between the first feeding end 1111A and the second feeding end 1121A and the first radiation source 111A, by adjusting the shapes of the second radiation source 112A and the first radiation source 111A, the microwave Doppler detection module 10A according to the other two variant embodiments of the above embodiment of the present invention is schematically illustrated, wherein corresponding to Fig.18A and Fig.18B In this embodiment of the present invention, the first radiation source 111A and the second radiation source 112A extend from the first feeding end 1111A and the second feeding end 1121A on the same surface of the dielectric substrate 18A and further extend to the other surface of the dielectric substrate 18A.

[0201] That is, corresponding to Fig.18A and Fig.18B In this variant embodiment of the present invention, the first feeding end 1111A of the first radiation source 111A and the second feeding end 1121A of the second radiation source 112A are carried on the same surface of the dielectric substrate 18A, wherein the first radiation source 111A extends from the first feeding end 1111A as an end along a line connecting the second feeding end 1121A to the first feeding end 1111A, and continues to extend around the side of the dielectric substrate 18A to the other surface of the dielectric substrate 18A, wherein the second radiation source 112A extends from the second feeding end 1121A as an end along a line connecting the first feeding end 1111A to the second feeding end 1121A, and continues to extend around the side of the dielectric substrate 18A to the other surface of the dielectric substrate 18A. In this way, while maintaining that the line length parameter L1 of the first radiation source 111A satisfies λ / 16≤L1≤λ, and the line length parameter L2 of the second radiation source 112A satisfies λ / 16≤L2≤λ, the size of the dielectric substrate 18A can be reduced, that is, while ensuring that the second radiation source 112A and the first radiation source 111A are coupled in a dual manner, it is beneficial to improve the applicability of the microwave Doppler detection module 10A by reducing the size of the microwave Doppler detection module 10A.

[0202] Corresponds to Fig.19A and Fig.19B In this variant embodiment of the present invention, the first radiation source 111A and the second radiation source 112A extend from the first feeding end 1111A and the second feeding end 1121A on different surfaces of the dielectric substrate 18A and further extend to the other surface of the dielectric substrate 18A.

[0203] Specifically, the first feeding end 1111A of the first radiation source 111A and the second feeding end 1121A of the second radiation source 112A are carried on different surfaces of the dielectric substrate 18A, wherein the first radiation source 111A is terminated by the first feeding end 1111A on the surface of the dielectric substrate 18A carrying the first feeding end 1111A, and extends from the first feeding end 1111A around the side of the dielectric substrate 18A to the surface of the dielectric substrate 18A carrying the second feeding end 1121A. The second radiation source 112A is terminated by the second feeding end 1121A on the surface of the dielectric substrate 18A carrying the second feeding end 1121A, and extends from the second feeding end 1121A around the side of the dielectric substrate 18A to the surface of the dielectric substrate 18A carrying the first feeding end 1111A. In this way, while maintaining that the line length parameter L1 of the first radiation source 111A satisfies λ / 16≤L1≤λ, and the line length parameter L2 of the second radiation source 112A satisfies λ / 16≤L2≤λ, the size of the dielectric substrate 18A can be reduced, that is, while ensuring that the second radiation source 112A and the first radiation source 111A are coupled in a dual manner, it is beneficial to improve the applicability of the microwave Doppler detection module 10A by reducing the size of the microwave Doppler detection module 10A.

[0204] To further disclose the present invention, reference is made to the accompanying drawings of the present invention. Fig. 20As shown, a three-dimensional structure of a microwave Doppler detection module 10B according to another embodiment of the present invention is schematically shown, wherein the microwave Doppler detection module 10B includes a plurality of pairs of dual coupled poles 11B, wherein each pair of the dual coupled poles 11B includes a second radiation source pole 112B and a first radiation source pole 111B, wherein the second radiation source pole 112B has a second feeding end 1121B, and the first radiation source pole 111B has a first feeding end 1111B, wherein the second feeding end 1121B and the first feeding end 1111B are close to each other within a λ / 4 distance, wherein the second radiation source pole 112B extends from the second feeding end 1121B with the second feeding end 1121B as an end, wherein the first radiation source pole 111B extends from the first feeding end 1111B with the first feeding end 1111B as an end. The first feeding end 1111B extends, wherein the first radiation source 111B is configured to be fed at the first feeding end 1111B, and the second radiation source 112B is configured to be fed at the second feeding end 1121B, so that when the first radiation source 111B is fed at the first feeding end 1111B and the second radiation source 112B is co-source fed at the second feeding end 1121B, the first radiation source 111B is coupled from the first feeding end 1111B along the first radiation source 111B to a corresponding position of the second radiation source 112B from the second feeding end 1121B along the second radiation source 112B, thereby forming a dual coupling mode between the first radiation source 111B and the second radiation source 112B.

[0205] Specifically, in this embodiment of the present invention, the microwave Doppler detection module 10B includes two pairs of the dual coupling poles 11B, wherein the two first feeding ends 1111B of the two first radiation source poles 111B of the two pairs of the dual coupling poles 11B are electrically connected, wherein the two second feeding ends 1121B of the two second radiation source poles 112B of the two pairs of the dual coupling poles 11B are electrically connected, wherein the connection line of the two second feeding ends 1121B crosses the connection line of the two first feeding ends 1111B, and the first feeding end 1111B and the second feeding end 1121B of the pair of the dual coupling poles 11B are electrically connected. The connecting line is parallel to the connecting line between the first feeding end 1111B and the second feeding end 1121B of another pair of the dual coupling poles 11B, so as to ensure that the first radiation source pole 111B and the second radiation source pole 112B of each pair of the dual coupling poles 11B are coupled in a dual manner, and at the same time, the dual coupling between the first radiation source pole 111B of one pair of the dual coupling poles 11B and the second radiation source pole 112 of another pair of the dual coupling poles 11B can be strengthened, thereby facilitating the improvement of the working efficiency of the microwave Doppler detection module 10B and correspondingly enhancing the gain of the microwave Doppler detection module 10B.

[0206] Similarly, in this embodiment of the present invention, the microwave Doppler detection module 10B further includes a dielectric substrate 18B, wherein the first radiation source 111B and the second radiation source 112B of each pair of the dual coupling poles 11B are carried on the same surface of the dielectric substrate 18B in the form of a microstrip line, so that the shape and size of the corresponding first radiation source 111B and the second radiation source 112B can be easily realized based on the microstrip line process.

[0207] Further, the second radiation source 112B and the first radiation source 111B arranged in the form of a microstrip line are arranged to satisfy: a line length parameter L1 of the first radiation source 111B defined between the first feeding end 1111B and an end opposite to the first feeding end 1111B is in the range of λ / 16≤L1≤λ; a line length parameter L2 of the second radiation source 112B defined between the second feeding end 1121B and an end opposite to the second feeding end 1121B is in the range of λ / 16≤L2≤λ.

[0208] The microwave Doppler detection module 10B also includes a circuit substrate 13B and a circuit unit 14B carried by the circuit substrate 13B, wherein the circuit unit 14B includes an oscillating circuit unit 141B and a mixing detection unit 142B, wherein the first radiation source pole 111B and the second radiation source pole 112B are electrically coupled to different poles of the oscillating circuit unit 141B at the first feeding end 1111B and the second feeding end 1121B, respectively. Specifically, the first radiation source pole 111B is fed and connected to the feed pole of the oscillating circuit unit 141B at the first feeding end 1111B, and the second radiation source pole 112B is electrically connected to the ground pole of the oscillating circuit unit 141B at the second feeding end 1121B, wherein the mixing detection unit 142B is electrically coupled to the oscillating circuit unit 141B and the dual coupling pole 11B, wherein the oscillating The oscillation circuit unit 141B allows being powered and outputs a feeding signal at its feeding pole and is grounded at its grounding pole, that is, the oscillation circuit unit 141B allows being powered and serves as an excitation signal feeding source, so that when the oscillation circuit unit 141B is powered, the first radiation source 111B and the second radiation source 112B are co-source fed by the oscillation circuit unit 141B at the first feeding end 1111B and the second feeding end 1121B respectively to emit a detection beam, and receive an echo of the detection beam, wherein the echo is received and a corresponding echo signal is generated, and the mixing detection unit 142B outputs an intermediate frequency signal corresponding to the frequency difference between the feeding signal and the echo signal, then based on the Doppler effect principle, the intermediate frequency signal corresponds to the movement of the corresponding object that reflects the detection beam to form the echo, and thus the microwave Doppler detection module 10B is suitable for detecting object movement.

[0209] Preferably, the first radiation source 111B and the second radiation source 112B of each pair of the dual coupling poles 11B are point-symmetrically arranged with respect to the midpoint of the line connecting the first feeding end 1111B and the second feeding end 1121B, that is, the first radiation source 111B and the second radiation source 112B of each pair of the dual coupling poles 11B have the same shape and size, and the positional relationship between the first radiation source 111B and the second radiation source 112B satisfies that the first radiation source 111B can be rotated 180 degrees in at least one direction around the midpoint of the line connecting the first feeding end 1111B and the second feeding end 1121B to coincide with the position of the second radiation source 112B. This is conducive to ensuring that the second radiation source 112B and the first radiation source 111B are coupled in a dual manner.

[0210] Specifically, in this embodiment of the present invention, the dielectric substrate 18B is disposed in parallel with the circuit substrate 13B and spaced apart from the circuit substrate 13B.

[0211] Similarly, the microwave Doppler detection module 10B further has an electromagnetic reflection surface 12B carried by the circuit substrate 13B, wherein the electromagnetic reflection surface 12B is blocked between the circuit unit 14B and the dual coupling pole 11B. Specifically, in this embodiment of the present invention, the electromagnetic reflection surface 12B is carried on a side of the circuit substrate 13B opposite to a side on which the circuit unit 14B is carried, wherein the first radiation source 111B and the second radiation source 112B are spaced apart from the electromagnetic reflection surface 12B in a space corresponding to the electromagnetic reflection surface 12B, so as to utilize the reflection characteristics of the electromagnetic reflection surface 12B for electromagnetic waves, and the first radiation source 111B and the second radiation source 112B are spaced apart from the electromagnetic reflection surface 12B in a space corresponding to the electromagnetic reflection surface 12B. The structural relationship forms the directional radiation characteristic of the microwave Doppler detection module 10B from the electromagnetic reflection surface 12B to the first radiation source 111B and the second radiation source 112B, that is, the detection direction of the microwave Doppler detection module 10B from the electromagnetic reflection surface 12B to the first radiation source 111B and the second radiation source 112B is correspondingly formed. Then, the microwave Doppler detection module 10B is suitable for detecting the activities of objects in the directional space corresponding to the detection direction, and is beneficial to avoiding the self-excitation of the microwave Doppler detection module 10B, and avoiding the interference of the electromagnetic radiation generated by the coupling between the first radiation source 111A and the second radiation source 112A to the circuit unit 14A carried on the circuit substrate 13A, thereby improving the anti-interference performance of the microwave Doppler detection module.

[0212] In particular, based on the adjustment of the positional relationship between the dielectric substrate 18B and the circuit substrate 13B, the microwave Doppler detection module 10B has a different structural design, which is beneficial to improving the applicability of the microwave Doppler detection module 10B.

[0213] Specifically, referring to the accompanying drawings of the present invention, Fig.21A and 21B As shown, based on the adjustment of the positional relationship between the dielectric substrate 18B and the circuit substrate 13B, the microwave Doppler detection module 10B according to two modified embodiments of the above embodiment of the present invention is schematically illustrated.

[0214] Corresponds to Fig.21AIn this variant embodiment of the present invention, the dielectric substrate 18B is perpendicular to the circuit substrate 13B, wherein the line connecting the first feeding end 1111B and the second feeding end 1121B of each pair of the dual coupling poles 11B is parallel to the circuit substrate 13B. That is, based on the positional relationship of the dielectric substrate 18B being parallel to the circuit substrate 13B in the above embodiment, the dielectric substrate 18B is rotated 90 degrees with the line connecting the first feeding end 1111B and the second feeding end 1121B of one pair of the dual coupling poles 11B as the axis to form a positional relationship in which the dielectric substrate 18B is perpendicular to the circuit substrate 13B, and the line connecting the first feeding end 1111B and the second feeding end 1121B of each pair of the dual coupling poles 11B is parallel to the circuit substrate 13B.

[0215] Corresponds to Fig.21B In this variant embodiment of the present invention, the dielectric substrate 18B is perpendicular to the circuit substrate 13B, wherein the connection line between the first feeding end 1111B and the second feeding end 1121B of each pair of the dual coupling poles 11B is perpendicular to the circuit substrate 13B. In other words, based on Fig.21A In the corresponding variant embodiment, the dielectric substrate 18B is perpendicular to the circuit substrate 13B, and the line connecting the first feeding end 1111B and the second feeding end 1121B of each pair of the dual coupling poles 11B is parallel to the positional relationship of the circuit substrate 13B. The dielectric substrate 18B is rotated 90 degrees about the midpoint of the line connecting the first feeding end 1111B and the second feeding end 1121B of one pair of the dual coupling poles 11B in the plane where the dielectric substrate 18B is located, so as to form a corresponding positional relationship in which the dielectric substrate 18B is perpendicular to the circuit substrate 13B, and the line connecting the first feeding end 1111B and the second feeding end 1121B of each pair of the dual coupling poles 11B is perpendicular to the circuit substrate 13B.

[0216] It can be understood that, in some embodiments of the present invention, at least one pair of the dual coupling poles 11B is allowed to be respectively provided on both sides of the dielectric substrate 18B, which can also ensure that the first radiation source pole 111B and the second radiation source pole 112B of each pair of the dual coupling poles 11B are coupled in a dual manner, and strengthen the dual coupling between the first radiation source pole 111B of the dual coupling pole 11B carried on one side of the dielectric substrate 18B and the second radiation source pole 112 arm of the dual coupling pole 11B carried on the other side of the dielectric substrate 18B. The present invention is not limited to this.

[0217] It is worth mentioning that the above embodiments are only examples, and based on the dual coupling method, the microwave Doppler detection module includes at least one pair of dual coupling poles, wherein the second radiation source pole of each pair of the dual coupling poles extends from the second feeding end with the second feeding end as the end, and the first radiation source pole of each pair of the dual coupling poles extends from the first feeding end with the first feeding end as the end, wherein the first radiation source pole and the second radiation source pole of each pair of the dual coupling poles have various shapes and sizes, and preferably satisfy that the first radiation source pole and the second radiation source pole of each pair of the dual coupling poles are point-symmetrically arranged with the midpoint of the line connecting the first feeding end and the second feeding end.

[0218] In particular, based on the state in which the second radiation source electrode is grounded in the above-mentioned embodiment, in some embodiments of the present invention, the first radiation source electrode is further grounded to reduce the impedance of the microwave Doppler detection module, and the quality factor (i.e., Q value) of the microwave Doppler detection module is improved, which is beneficial to improving the anti-interference ability of the microwave Doppler detection module.

[0219] Specifically, in some embodiments of the present invention, one end of the first radiation source of a pair of coupled poles opposite to the first feeding end is integrally extended to the end of the second radiation source opposite to the second feeding end, so as to maintain the symmetrical structure between the first radiation source and the second radiation source, and to form a structure in which the first radiation source is grounded by electrically connecting the first radiation source to the second radiation source based on the state in which the second radiation source is grounded in the above-mentioned embodiment, which is conducive to simplifying the line connection structure of the microwave Doppler detection module.

[0220] It is worth mentioning that based on the disclosure of the microwave Doppler detection module in the above embodiment, it can be understood that: even in the feeding state where the second radiation source is grounded, the second radiation source of a pair of coupled poles corresponds to the first radiation source and has a flexible and changeable shape and size and is not limited to a plate-like structure with a restricted area, that is, the grounded second radiation source is free from the restriction of having a minimum restricted area as a reference ground. Then, by extending the second radiation source and the first radiation source out of the corresponding metal plate, the microwave Doppler detection module is also suitable for the application scenarios of the microwave detection module with the aforementioned columnar radiation source structure, and relative to the microwave detection module with the columnar radiation source structure, the corresponding metal plate will not affect the coupling between the first radiation source and the second radiation source, and the microwave Doppler detection module has better stability in the corresponding application scenarios.

[0221] For example, referring to the accompanying drawings of the present invention, Fig. 22 and Fig.23 Based on the application of the microwave Doppler detection module in the application scenario of the microwave detection module with the aforementioned columnar radiation source structure, the present invention further provides a microwave Doppler detection device.

[0222] Specifically, corresponding to Fig. 22 According to the accompanying drawings of the specification of the present invention Figure 6 The application scenario of the microwave Doppler detection module 10 in the above-mentioned columnar radiation source structure is exemplified, wherein the microwave Doppler detection device includes the microwave Doppler detection module 10 and an electromagnetic shielding layer 20, wherein the electromagnetic shielding layer 20 has a through hole 22, wherein the circuit substrate 13 is arranged in a shielding space corresponding to one side of the electromagnetic shielding layer 20, wherein the first radiation source pole 111 and the second radiation source pole 112 are arranged in a space corresponding to the other side of the electromagnetic shielding layer 20, wherein the first feed line 15 and the second feed line 16 penetrate the electromagnetic shielding layer 20 through the through hole 22 to form the first radiation source pole 111 and the second radiation source The circuit connection structure between the pole 112 and the circuit unit 14, so that the first radiation source pole 111 and the second radiation source pole 112 are arranged in the space outside the shielding space, so as to realize the activity detection of the space outside the shielding space, wherein based on the shape design of the first radiation source pole 111 and the second radiation source pole 112, the projection area of ​​the first radiation source pole 111 and the second radiation source pole 112 on the electromagnetic shielding layer 20 in the direction perpendicular to the electromagnetic shielding layer 20 can be reduced, which is beneficial to reducing the size of the through hole 22 and maintaining the integrity of the electromagnetic shielding layer 20 and improving the concealment of the installation of the microwave Doppler detection module 10 in the microwave Doppler detection equipment.

[0223] It can be understood that the first radiation source pole 111 and the second radiation source pole 112 are coupled in a dual manner. When the first radiation source pole 111 and the second radiation source pole 112 are located in the space corresponding to the same surface of the electromagnetic shielding layer 20, the coupling between the first radiation source pole 111 and the second radiation source pole 112 can avoid being hindered by the electromagnetic shielding layer 20, thereby helping to maintain the detection stability of the microwave Doppler detection module 10 installed in the microwave Doppler detection equipment.

[0224] In particular, in this embodiment of the present invention, the electromagnetic shielding layer 20 is configured as an LED light board and a plurality of LED lamp beads 21 are arranged on a side corresponding to the first radiation source pole 111 and the second radiation source pole 112, wherein based on the shape design of the corresponding first radiation source pole 111 and the second radiation source pole 112, the projection area of ​​the first radiation source pole 111 and the second radiation source pole 112 on the electromagnetic shielding layer 20 in a direction perpendicular to the electromagnetic shielding layer 20 can be reduced, and the size of the corresponding through hole 22 can be reduced and allow the first radiation source pole 111 and the second radiation source pole 112 to pass through to install the microwave Doppler detection module 10 on the microwave Doppler detection device, which is beneficial to maintain the integrity of the LED light board and avoid the formation of dark areas on the LED light board.

[0225] Corresponds to Fig.23 According to the accompanying drawings of the specification of the present invention Fig.15 The application scenario of the corresponding microwave Doppler detection module 10A in the microwave detection module of the aforementioned columnar radiation source structure is exemplified, wherein the microwave Doppler detection device includes the microwave Doppler detection module 10A and an electromagnetic shielding layer 20A, wherein the electromagnetic shielding layer 20A has a through hole 22A, wherein the circuit substrate 13A is arranged in a shielding space corresponding to one side of the electromagnetic shielding layer 20A, wherein the first radiation source 111A and the second radiation source 112A are arranged in a space corresponding to the other side of the electromagnetic shielding layer 20A, wherein the first feed line 15A and the second feed line 16A penetrate the electromagnetic shielding layer 20A through the through hole 22A to form the first radiation source 111A and the second radiation The circuit connection structure between the source 112A and the circuit unit 14A, so that the first radiation source 111A and the second radiation source 112A are arranged in the space outside the shielding space, the activity detection of the space outside the shielding space is realized, wherein based on the shape design of the corresponding first radiation source 111A and the second radiation source 112A, the projection area of ​​the first radiation source 111A and the second radiation source 112A on the electromagnetic shielding layer 20A in the direction perpendicular to the electromagnetic shielding layer 20A can be reduced, which is beneficial to reducing the size of the through hole 22A and maintaining the integrity of the electromagnetic shielding layer 20A and improving the concealment of the installation of the microwave Doppler detection module 10A in the microwave Doppler detection equipment.

[0226] It can be understood that the first radiation source 111A and the second radiation source 112A are coupled in a dual manner. When the first radiation source 111A and the second radiation source 112A are located in the space corresponding to the same surface of the electromagnetic shielding layer 20A, the coupling between the first radiation source 111A and the second radiation source 112A can avoid being obstructed by the electromagnetic shielding layer 20A, thereby helping to maintain the detection stability of the microwave Doppler detection module 10A installed in the microwave Doppler detection equipment.

[0227] It is worth mentioning that when the second feed line 16A and the first feed line 15A are set to a shielded wire in which the second feed line 16A surrounds the first feed line 15A, and the shielded wire is pluggably set to form a pluggable circuit connection structure between the first radiation source 111A and the second radiation source 112A and the circuit unit 14A, such as setting the shielded wire to a structure that can be pluggable with the dielectric substrate 18A or the circuit substrate 13A to form a pluggable circuit connection structure between the first radiation source 111A and the second radiation source 112A and the circuit unit 14A, the size of the through hole 22A of the electromagnetic shielding layer 20 is allowed to be set to have a wire diameter corresponding to the shielded wire, which is conducive to reducing the size of the through hole 22A, thereby facilitating further maintaining the integrity of the electromagnetic shielding layer 20A and improving the concealment of the installation of the microwave Doppler detection module 10A in the microwave Doppler detection device.

[0228] In particular, in this embodiment of the present invention, the electromagnetic shielding layer 20A is configured as an LED light board and a plurality of LED lamp beads 21A are arranged on a side corresponding to the first radiation source pole 111A and the second radiation source pole 112A, wherein based on the shape design of the corresponding first radiation source pole 111A and the second radiation source pole 112A, the projection area of ​​the first radiation source pole 111A and the second radiation source pole 112A on the electromagnetic shielding layer 20A in a direction perpendicular to the electromagnetic shielding layer 20A can be reduced, thereby helping to avoid the formation of a dark area on the LED light board.

[0229] It can be understood that, based on the reflection characteristics of the electromagnetic shielding layer 20A to electromagnetic waves, the electromagnetic reflection surface 12A can be equivalently formed on the electromagnetic shielding layer 20A, that is, the electromagnetic reflection surface 12A formed correspondingly on the circuit substrate 13A may not be set, that is to say, in this embodiment of the present invention, the electromagnetic reflection surface 12A formed on the circuit substrate 13A does not constitute a limitation on the microwave Doppler detection device of the present invention.

[0230] It is worth mentioning that the above embodiments are only examples. Based on the dual coupling mode, the microwave Doppler detection module includes at least one pair of dual coupling poles, wherein the first radiation source pole and the second radiation source pole of each pair of the dual coupling poles have various shapes and sizes, and can be in the shielding space corresponding to one side of the electromagnetic shielding layer, through the through hole, the first radiation source pole and the second radiation source pole are extended to the space outside the shielding space corresponding to the other side of the electromagnetic shielding layer, so as to complete the installation of the microwave Doppler detection module in the corresponding microwave Doppler detection device, break through the shielding space to realize the activity detection outside the shielding space, and can maintain the integrity of the electromagnetic shielding layer, which is conducive to the concealed installation of the microwave Doppler detection module in the microwave Doppler detection device on the one hand, and can realize the stable and blind spot detection of the space outside the shielding space on the other hand. It can be understood that the electromagnetic shielding layer of the microwave Doppler detection device is not limited to being implemented as an LED light board, and the electromagnetic shielding layer should be understood as a functional layer with electromagnetic shielding effect, including but not limited to a metal (mesh) layer, a composite layer doped with metal, a metal oxide layer, etc. Therefore, the electromagnetic shielding layer can also be implemented as a device housing with electromagnetic shielding function, such as a lamp housing, an air conditioner housing, an elevator car body, etc.

[0231] Those skilled in the art will appreciate that the above embodiments are merely examples, wherein features of different embodiments may be combined with each other to obtain implementation methods that are easily conceivable based on the contents disclosed in the present invention but are not explicitly indicated in the drawings.

[0232] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A microwave Doppler detection module, characterized in that: include: At least one pair of dual coupled poles, wherein the pair of dual coupled poles comprises a first radiation source pole and a second radiation source pole, wherein the first radiation source pole has a first feeding end and is configured as a conductor extending with the first feeding end as an end, wherein the second radiation source pole has a second feeding end and is configured as a conductor extending with the second feeding end as an end, wherein the first radiation source pole and the second radiation source pole are respectively adapted to be fed by the same excitation signal feed source at the first feeding end and the second feeding end, wherein the first feeding end and the second feeding end are close to each other within a distance range less than or equal to λ / 4, wherein λ is a wavelength parameter corresponding to the feeding signal frequency of the excitation signal feed source, wherein the first radiation source pole is a first radiation source pole and a second radiation source pole is a second radiation source pole, wherein the first radiation source pole and the second radiation source pole are respectively adapted to be fed by the same excitation signal feed source at the first feeding end and the second feeding end, wherein the first feeding end and the second feeding end are close to each other within a distance range less than or equal to λ / 4, wherein λ is a wavelength parameter corresponding to the feeding signal frequency of the excitation signal feed source, wherein the first radiation source pole is a first radiation source pole and a second radiation source pole, wherein the first radiation source pole and the second radiation source pole are respectively adapted to be fed by the same excitation signal feed source at the first feeding end and the second feeding end ... The source is configured to satisfy a line length greater than or equal to λ / 16 from the first feeding end, wherein the second radiation source is configured to satisfy a line length greater than or equal to λ / 16 from the second feeding end, so that when the first radiation source and the second radiation source are fed by the same excitation signal feed source at the first feeding end and the second feeding end respectively, the current and potential distributions of the first radiation source and the second radiation source can be in a dual distribution state with the midpoint of the line connecting the first feeding end and the second feeding end, so that the first radiation source is coupled to the corresponding position of the second radiation source along the first radiation source from the first feeding end along the second radiation source; and An electromagnetic reflection surface, wherein the dual coupling poles are arranged in a space corresponding to the electromagnetic reflection surface and spaced apart from the electromagnetic reflection surface.

2. The microwave Doppler detection module according to claim 1, wherein the dimension of the electromagnetic reflection surface in a direction parallel to a line connecting the first feeding end and the second feeding end satisfies being greater than or equal to λ / 4, and the dimension of the electromagnetic reflection surface in a direction perpendicular to a line connecting the first feeding end and the second feeding end satisfies being greater than or equal to λ / 4. 3 . The microwave Doppler detection module according to claim 2 , wherein a distance between a midpoint of a line connecting the first feeding end and the second feeding end and the electromagnetic reflection surface satisfies being greater than or equal to λ / 32.

4. The microwave Doppler detection module according to claim 2, wherein the microwave Doppler detection module further comprises a circuit unit, wherein the circuit unit comprises an oscillating circuit unit and a mixing detection unit, wherein the mixing detection unit is electrically coupled to the oscillating circuit unit and the dual coupling pole, wherein the oscillating circuit unit is configured to allow being powered and outputting a feeding signal at its feed pole and being grounded at its ground pole to serve as an excitation signal feed source, wherein the first radiation source pole is electrically coupled to the feed pole of the oscillating circuit unit at the first feeding end, wherein the second radiation source pole is electrically connected to the ground pole of the oscillating circuit unit at the second feeding end, so that when the oscillating circuit unit is powered, the first radiation source pole and the second radiation source pole are co-source fed by the oscillating circuit unit at the first feeding end and the second feeding end respectively. 5 . The microwave Doppler detection module according to claim 4 , wherein the electromagnetic reflection surface is blocked between the dual coupling poles and the circuit unit. 6 . The microwave Doppler detection module according to claim 5 , wherein the microwave Doppler detection module further comprises a circuit substrate, wherein the electromagnetic reflection surface and the circuit unit are carried on the circuit substrate at two opposite surfaces of the circuit substrate.

7. The microwave Doppler detection module according to claim 6, wherein the microwave Doppler detection module further comprises a first feed line and a second feed line, wherein the first radiation source is electrically coupled to the feed of the oscillation circuit unit at the first feed end via the first feed line, and wherein the second radiation source is electrically connected to the ground of the oscillation circuit unit at the second feed end via the second feed line. 8 . The microwave Doppler detection module according to claim 7 , wherein the second feeding line surrounds the first feeding line to form an electromagnetic shielding cavity. 9 . The microwave Doppler detection module according to claim 8 , wherein the first feed line and the second feed line are implemented as a shielded line in which the second feed line surrounds the first feed line, wherein the shielded line is pluggably arranged. 10 . The microwave Doppler detection module according to claim 8 , wherein the first feeding line penetrates the circuit substrate and is fixed and electrically connected to the circuit unit in a welding manner. 11 . The microwave Doppler detection module according to claim 10 , wherein the second feeding line has at least one soldering foot, wherein the soldering foot is inserted into the circuit substrate and fixed by soldering.

12. The microwave Doppler detection module according to claim 10, wherein the second feed line has at least one solder leg, wherein the solder leg is bent and arranged perpendicular to the second feed line and fixed to a surface of the circuit substrate on which the electromagnetic reflection surface is arranged by welding. 13 . The microwave Doppler detection module according to claim 10 , wherein an end surface of the second feeding line away from the second feeding end is fixed to the circuit substrate by welding.

14. The microwave Doppler detection module according to claim 10, wherein one end of the second feed line away from the second feed end is extended along the radial direction of the second feed line to be horn-shaped, wherein the horn-shaped end of the second feed line is welded and fixed to the circuit substrate. 15 . The microwave Doppler detection module according to claim 8 , wherein the microwave Doppler detection module further comprises a bushing, wherein the bushing is encircled around the first feed line and the electromagnetic shielding cavity embedded in the second feed line. 16 . The microwave Doppler detection module according to claim 15 , wherein the second radiation source is conductively welded to the second feeding line at the second feeding end by laser spot welding.

17. The microwave Doppler detection module according to claim 15, wherein the second radiation source is configured to be tubular, wherein an extension direction of the second radiation source configured to be tubular from the second feeding end corresponds to an extension direction of a mirror image of the first radiation source in a direction from the first feeding end to the second feeding end.

18. The microwave Doppler detection module according to claim 8, wherein the first radiation source is further electrically connected to a ground of the oscillating circuit unit.

19. The microwave Doppler detection module according to claim 18, wherein an end of the first radiation source electrode of a pair of the dual coupled poles opposite to the first feeding end extends integrally to an end of the second radiation source electrode opposite to the second feeding end, so as to form a state in which the first radiation source electrode is grounded when the second radiation source electrode is grounded.

20. The microwave Doppler detection module according to claim 18, wherein the first radiation source is electrically connected to the second feeding line and is electrically connected to the ground of the oscillating circuit unit.

21. The microwave Doppler detection module according to claim 20, wherein the second feed line has a pair of slotted positions along the direction of the first feed line from an end connected to the second radiation source, wherein the pair of slotted positions define a first arm and a second arm on the second feed line, wherein the second radiation source extends conductively from the second arm of the second feed line, wherein the first radiation source extends conductively from the first feed line and the first arm of the second feed line and is electrically connected to the ground of the oscillation circuit unit, wherein the second feed line is provided with at least one slot at a pair of slotted positions respectively along the direction of the first feed line.

22. The microwave Doppler detection module according to claim 21, wherein the first feed line is electrically connected to the first arm, wherein the first radiation source is electrically connected to the first arm at the first feed end, so as to form a state in which the first radiation source extends conductively from the first arm of the first feed line and the second feed line.

23. The microwave Doppler detection module according to claim 22, wherein the number of the slots at each slot position is greater than one, and the slot depths of the slots at the same slot position are different.

24. The microwave Doppler detection module according to claim 22, wherein the second feed line is provided with a slot at each of a pair of slot positions, wherein the slot has a slot depth greater than or equal to λ / 128 from the end of the second feed line connected to the second radiation source pole along the direction of the first feed line. 25 . The microwave Doppler detection module according to claim 24 , wherein the first radiation source extends integrally from the first feeding end to the first arm, and wherein the second radiation source extends integrally from the second feeding end to the second arm.

26. The microwave Doppler detection module according to claim 24, wherein the first radiation source extends conductively from the first feeding end to the first arm and the second arm in one of the slots, and the second radiation source extends conductively from the second feeding end to the first arm and the second arm in another of the slots, so as to form a state in which the first radiation source is electrically connected to the first arm and the second arm of the second feeding line at the first feeding end, and the second radiation source is electrically connected to the first arm and the second arm of the second feeding line at the second feeding end, wherein the first arm of the second feed line is electrically connected to the first feed line at a position deviated from the central axis of the first arm.

27. The microwave Doppler detection module according to claim 24, wherein the first radiation source and the second radiation source are integrally formed as a whole to form a state in which the first feeding end of the first radiation source is further electrically connected to the second feeding end of the second radiation source.

28. The microwave Doppler detection module according to claim 27, wherein the first radiation source and the second radiation source as a whole are mounted on the first arm and the second arm of the second feed line, so that the first feeding end and the second feeding end are the parts of the first radiation source and the second radiation source as a whole that are in contact with the first arm and the second arm respectively, thereby forming a state in which the first radiation source is electrically connected to the first arm of the second feed line at the first feeding end, the second radiation source is electrically connected to the second arm of the second feed line at the second feeding end, and the first feeding end of the first radiation source is electrically connected to the second feeding end of the second radiation source.

29. The microwave Doppler detection module according to claim 27, wherein the first radiation source and the second radiation source, which are integrally formed, are mounted on the second feed line along a pair of the slot directions to correspondingly form an electrical connection state in which the first radiation source is electrically connected to the first arm and the second arm of the second feed line at the first feeding end, the second radiation source is electrically connected to the first arm and the second arm of the second feed line at the second feeding end, and the first feeding end of the first radiation source is electrically connected to the second feeding end of the second radiation source, wherein the first arm of the second feed line is electrically connected to the first feed line at a position deviated from the central axis of the first arm.

30. A microwave Doppler detection module according to any one of claims 1 to 29, wherein the first radiation source is further extended at an end opposite to the first feeding end in two opposite directions perpendicular to a line connecting the first feeding end and the second feeding end, and the second radiation source is further extended at an end opposite to the second feeding end in two opposite directions perpendicular to a line connecting the first feeding end and the second feeding end.

31. The microwave Doppler detection module according to any one of claims 1 to 29, wherein the first radiation source and the second radiation source are arranged symmetrically about a midpoint of a line connecting the first feeding end and the second feeding end.

32. The microwave Doppler detection module according to claim 31, wherein the first radiation source is configured as a columnar conductive wire extending from the first feed end to the first feed end along a line connecting the second feed end to the first feed end, wherein the second radiation source is configured as a columnar conductive wire extending from the second feed end to the second feed end along a line connecting the first feed end to the second feed end.

33. The microwave Doppler detection module according to claim 31, wherein the first radiation source is configured as a columnar conductive line extending from the first feeding end to the first feeding end, and in a direction connecting the second feeding end to the first feeding end and away from the electromagnetic reflection surface, wherein the second radiation source is configured as a columnar conductive line extending from the second feeding end to the second feeding end, and in a direction connecting the first feeding end to the second feeding end and away from the electromagnetic reflection surface.

34. The microwave Doppler detection module according to claim 31, wherein the first radiation source is configured as a columnar conductive wire extending from the first feeding end to the first feeding end, and in a direction connecting the second feeding end to the first feeding end and in a direction close to the electromagnetic reflection surface, wherein the second radiation source is configured as a columnar conductive wire extending from the second feeding end to the second feeding end, and in a direction connecting the first feeding end to the second feeding end and in a direction close to the electromagnetic reflection surface.

35. The microwave Doppler detection module according to claim 31, wherein the first radiation source is arranged to extend from the first feeding end to the first feeding end, in a direction of a line from the second feeding end to the first feeding end, away from the electromagnetic reflection surface, and in a direction of a line from the first feeding end to the second feeding end, wherein the second radiation source extends from the second feeding end to the second feeding end, in a direction of a line from the first feeding end to the second feeding end, away from the electromagnetic reflection surface, and in a direction of a line from the second feeding end to the first feeding end.

36. The microwave Doppler detection module according to claim 31, wherein the first radiation source is arranged to extend from the first feeding end to the first feeding end, in a direction of a line from the second feeding end to the first feeding end, in a direction close to the electromagnetic reflection surface, and in a direction from the first feeding end to the second feeding end, wherein the second radiation source extends from the second feeding end to the second feeding end, in a direction of a line from the first feeding end to the second feeding end, in a direction close to the electromagnetic reflection surface, and in a direction from the second feeding end to the first feeding end.

37. The microwave Doppler detection module according to claim 31, wherein the microwave Doppler detection module further comprises a dielectric substrate, wherein the first radiation source and the second radiation source are carried on the dielectric substrate in the form of microstrip lines.

38. The microwave Doppler detection module according to claim 37, wherein the first radiation source and the second radiation source are carried on the same surface of the dielectric substrate, wherein the first radiation source is configured as a microstrip line extending from the first feeding end to the first feeding end along a line connecting the second feeding end to the first feeding end, and wherein the second radiation source is configured as a microstrip line extending from the second feeding end to the second feeding end along a line connecting the first feeding end to the second feeding end.

39. The microwave Doppler detection module according to claim 38, wherein a surface of the dielectric substrate carrying the first radiation source and the second radiation source is parallel to the electromagnetic reflection surface.

40. The microwave Doppler detection module according to claim 39, wherein the microwave Doppler detection module comprises two pairs of the dual coupled poles, wherein the two first feeding ends of the two first radiation source poles of the two pairs of the dual coupled poles are electrically connected, wherein the two second feeding ends of the two second radiation source poles of the two pairs of the dual coupled poles are electrically connected, wherein the connection line of the two second feeding ends crosses the connection line of the two first feeding ends, and the connection line between the first feeding end and the second feeding end of one pair of the dual coupled poles is parallel to the connection line between the first feeding end and the second feeding end of another pair of the dual coupled poles.

41. The microwave Doppler detection module according to claim 38, wherein a surface of the dielectric substrate carrying the first radiation source and the second radiation source is perpendicular to the electromagnetic reflection surface, and a line connecting the first feeding end and the second feeding end is perpendicular to the electromagnetic reflection surface.

42. The microwave Doppler detection module according to claim 41, wherein the microwave Doppler detection module comprises two pairs of the dual coupled poles, wherein the two first feeding ends of the two first radiation source poles of the two pairs of the dual coupled poles are electrically connected, wherein the two second feeding ends of the two second radiation source poles of the two pairs of the dual coupled poles are electrically connected, wherein the connection line of the two second feeding ends crosses the connection line of the two first feeding ends, and the connection line between the first feeding end and the second feeding end of one pair of the dual coupled poles is parallel to the connection line between the first feeding end and the second feeding end of another pair of the dual coupled poles.

43. The microwave Doppler detection module according to claim 38, wherein a surface of the dielectric substrate carrying the first radiation source and the second radiation source is perpendicular to the electromagnetic reflection surface, and a line connecting the first feeding end and the second feeding end is parallel to the electromagnetic reflection surface.

44. The microwave Doppler detection module according to claim 43, wherein the microwave Doppler detection module comprises two pairs of the dual coupled poles, wherein the two first feeding ends of the two first radiation source poles of the two pairs of the dual coupled poles are electrically connected, wherein the two second feeding ends of the two second radiation source poles of the two pairs of the dual coupled poles are electrically connected, wherein the connection line of the two second feeding ends crosses the connection line of the two first feeding ends, and the connection line between the first feeding end and the second feeding end of one pair of the dual coupled poles is parallel to the connection line between the first feeding end and the second feeding end of another pair of the dual coupled poles.

45. The microwave Doppler detection module according to claim 37, wherein the first feeding end of the first radiation source and the second feeding end of the second radiation source are carried on the same surface of the dielectric substrate, wherein the first radiation source extends from the first feeding end as an end along a line connecting the second feeding end to the first feeding end, and continues to extend around the side of the dielectric substrate to the other surface of the dielectric substrate, wherein the second radiation source extends from the second feeding end as an end along a line connecting the first feeding end to the second feeding end, and continues to extend around the side of the dielectric substrate to the other surface of the dielectric substrate.

46. ​​The microwave Doppler detection module according to claim 37, wherein the first feeding end of the first radiation source and the second feeding end of the second radiation source are respectively carried on two opposite surfaces of the dielectric substrate, wherein the first radiation source extends toward one side of the dielectric substrate with the first feeding end as an end and continues to extend around the side of the dielectric substrate to the other side of the dielectric substrate, wherein the second radiation source extends toward the other opposite side of the dielectric substrate with the second feeding end as an end and continues to extend around the opposite side of the dielectric substrate to the other side of the dielectric substrate.

47. A microwave Doppler detection device, characterized in that: include: A circuit unit, wherein the circuit unit includes an oscillating circuit unit and a mixer-detection unit, wherein the oscillating circuit unit is configured to be powered to output a feeding signal at its feeding pole and to be grounded at its ground pole to serve as an excitation signal feeding source; an electromagnetic shielding layer, wherein the electromagnetic shielding layer is provided with a through hole, wherein the circuit unit is provided in a space corresponding to one side of the electromagnetic shielding layer; and at least one pair of dual coupling poles, wherein the dual coupling poles are arranged in the space corresponding to the other side of the electromagnetic shielding layer, wherein the pair of dual coupling poles comprises a first radiation source pole and a second radiation source pole, wherein the first radiation source pole has a first feeding end and is arranged as a conductor extending with the first feeding end as an end, wherein the second radiation source pole has a second feeding end and is arranged as a conductor extending with the second feeding end as an end, wherein the mixer detection unit is electrically coupled to the oscillation circuit unit and the dual coupling poles, wherein the first radiation source pole is electrically coupled to the feed of the oscillation circuit unit at the first feeding end by a first feeding line penetrating the electromagnetic shielding layer through the through hole, wherein the second radiation source pole is electrically connected to the feed of the oscillation circuit unit at the second feeding end by a second feeding line penetrating the electromagnetic shielding layer through the through hole. connected to the ground of the oscillation circuit unit, wherein the first feeding end and the second feeding end are close to each other within a distance range of less than or equal to λ / 4, wherein λ is a wavelength parameter corresponding to the frequency of the feeding signal, wherein the first radiation source is configured to satisfy a line length greater than or equal to λ / 16 from the first feeding end, wherein the second radiation source is configured to satisfy a line length greater than or equal to λ / 16 from the second feeding end, so that when the oscillation circuit unit is powered, the potential distribution of the first radiation source and the second radiation source can be in a dual distribution state with the midpoint of the line connecting the first feeding end and the second feeding end, so that the first radiation source is coupled to the corresponding position of the second radiation source along the first radiation source from the first feeding end along the second radiation source from the second feeding end.

48. The microwave Doppler detection device according to claim 47, wherein the microwave Doppler detection module further comprises a circuit substrate, wherein the circuit unit is carried on the circuit substrate.

49. The microwave Doppler detection device according to claim 48, wherein the second feeding line surrounds the first feeding line to form an electromagnetic shielding cavity.

50. The microwave Doppler detection device according to claim 49, wherein the microwave Doppler detection device further comprises a bushing, wherein the bushing is encircled by the first feed line and the electromagnetic shielding cavity embedded in the second feed line.

51. The microwave Doppler detection device according to claim 50, wherein the first feeding line penetrates the circuit substrate and is fixed and electrically connected to the circuit unit in a welding manner.

52. The microwave Doppler detection device according to claim 51, wherein the first feed line extends integrally from the first feed end to the first radiation source pole, and the second feed line extends integrally from the second feed end to the second radiation source pole.

53. The microwave Doppler detection device according to claim 50, wherein the first radiation source is further electrically connected to the ground of the oscillating circuit unit.

54. The microwave Doppler detection device according to claim 53, wherein the second feed line has a pair of slotted positions along the direction of the first feed line from the end connected to the second radiation source, wherein the pair of slotted positions define a first arm and a second arm on the second feed line, wherein the second radiation source extends conductively from the second arm of the second feed line, wherein the first radiation source extends conductively from the first feed line and the first arm of the second feed line and is electrically connected to the ground of the oscillation circuit unit, wherein the second feed line is provided with at least one slot at a pair of slotted positions respectively along the direction of the first feed line.

55. The microwave Doppler detection device according to claim 54, wherein the first feed line is electrically connected to the first arm, wherein the first radiation source is electrically connected to the first arm at the first feed end, so as to form a state in which the first radiation source extends conductively from the first arm of the first feed line and the second feed line.

56. The microwave Doppler detection device according to claim 55, wherein the second feed line is provided with a slot at a pair of slot positions respectively, wherein the slot has a slot depth greater than or equal to λ / 128 from the end of the second feed line connected to the second radiation source pole along the direction of the first feed line.

57. The microwave Doppler detection device according to claim 56, wherein the first radiation source extends integrally from the first feeding end to the first arm, and wherein the second radiation source extends integrally from the second feeding end to the second arm.

58. The microwave Doppler detection device according to claim 56, wherein the first radiation source extends conductively from the first feeding end to the first arm and the second arm in one of the slots, and the second radiation source extends conductively from the second feeding end to the first arm and the second arm in another of the slots, wherein the first arm of the second feed line is electrically connected to the first feed line at a position deviated from the central axis of the first arm.

59. The microwave Doppler detection device according to claim 56, wherein the first radiation source and the second radiation source are integrally formed as a whole to form a state in which the first feeding end of the first radiation source is further electrically connected to the second feeding end of the second radiation source.

60. The microwave Doppler detection device according to claim 59, wherein the first radiation source and the second radiation source as a whole are mounted on the first arm and the second arm of the second feed line, so that the first feeding end and the second feeding end are the parts of the first radiation source and the second radiation source as a whole that are in contact with the first arm and the second arm respectively, thereby forming a state in which the first radiation source is electrically connected to the first arm of the second feed line at the first feeding end, the second radiation source is electrically connected to the second arm of the second feed line at the second feeding end, and the first feeding end of the first radiation source is electrically connected to the second feeding end of the second radiation source.

61. The microwave Doppler detection device according to claim 59, wherein the first radiation source and the second radiation source as a whole are mounted on the second feed line along a pair of the slot directions to form a corresponding state in which the first radiation source is electrically connected to the first arm and the second arm of the second feed line at the first feeding end, the second feeding end of the second radiation source is electrically connected to the first arm and the second arm of the second feed line at the same time, and the first feeding end of the first radiation source is electrically connected to the second feeding end of the second radiation source, wherein the first arm of the second feed line is electrically connected to the first feed line at a position deviated from the central axis of the first arm.

62. The microwave Doppler detection device according to claim 49, wherein the first feed line and the second feed line are implemented as a shielded wire in which the first feed line is surrounded by the second feed line, wherein the shielded wire is pluggably arranged, and wherein the size of the through hole is arranged to be adapted to the wire diameter of the shielded wire.

63. The microwave Doppler detection device according to claim 49, wherein the electromagnetic shielding layer is configured as an LED light board.

64. A microwave Doppler detection device according to any one of claims 47 to 63, wherein the microwave Doppler detection device further comprises an electromagnetic reflection surface, wherein the electromagnetic reflection surface is carried on a side of the circuit substrate opposite to a side carrying the circuit unit, and is blocked between the dual coupling pole and the circuit unit.

65. The microwave Doppler detection device according to claim 64, wherein the dimension of the electromagnetic reflection surface in a direction parallel to the line connecting the first feeding terminal and the second feeding terminal satisfies to be greater than or equal to λ / 4, and the dimension of the electromagnetic reflection surface in a direction perpendicular to the line connecting the first feeding terminal and the second feeding terminal satisfies to be greater than or equal to λ / 4.

66. The microwave Doppler detection device according to claim 65, wherein the first radiation source and the second radiation source are arranged symmetrically with respect to a midpoint of a line connecting the first feeding end and the second feeding end.

67. The microwave Doppler detection device according to claim 66, wherein the first radiation source is configured as a columnar conductive wire extending from the first feed end to the first feed end along the line connecting the second feed end to the first feed end, and the second radiation source is configured as a columnar conductive wire extending from the second feed end to the second feed end along the line connecting the first feed end to the second feed end.

68. The microwave Doppler detection device according to claim 66, wherein the first radiation source is configured as a columnar conductive wire extending from the first feeding end to the first feeding end, and in a direction connecting the second feeding end to the first feeding end and in a direction away from the electromagnetic reflection surface, wherein the second radiation source is configured as a columnar conductive wire extending from the second feeding end to the second feeding end, and in a direction connecting the first feeding end to the second feeding end and in a direction away from the electromagnetic reflection surface.

69. The microwave Doppler detection device according to claim 66, wherein the first radiation source is configured as a columnar conductive wire extending from the first feeding end to the first feeding end, and in a direction connecting the second feeding end to the first feeding end and in a direction close to the electromagnetic reflection surface, wherein the second radiation source is configured as a columnar conductive wire extending from the second feeding end to the second feeding end, and in a direction connecting the first feeding end to the second feeding end and in a direction close to the electromagnetic reflection surface.

70. The microwave Doppler detection device according to claim 66, wherein the first radiation source is arranged to extend from the first feeding end to the first feeding end, in a direction of a line from the second feeding end to the first feeding end, away from the electromagnetic reflection surface, and in a direction of a line from the first feeding end to the second feeding end, wherein the second radiation source extends from the second feeding end to the second feeding end, in a direction of a line from the first feeding end to the second feeding end, away from the electromagnetic reflection surface, and in a direction of a line from the second feeding end to the first feeding end.

71. The microwave Doppler detection device according to claim 66, wherein the first radiation source is arranged to extend from the first feeding end to the first feeding end, in a direction of a line from the second feeding end to the first feeding end, in a direction close to the electromagnetic reflection surface, and in a direction from the first feeding end to the second feeding end, wherein the second radiation source extends from the second feeding end to the second feeding end, in a direction of a line from the first feeding end to the second feeding end, in a direction close to the electromagnetic reflection surface, and in a direction from the second feeding end to the first feeding end.

72. The microwave Doppler detection device according to claim 66, wherein the microwave Doppler detection module further comprises a dielectric substrate, wherein the first radiation source and the second radiation source are carried on the dielectric substrate in the form of microstrip lines.

73. The microwave Doppler detection device according to claim 72, wherein the first radiation source and the second radiation source are carried on the same surface of the dielectric substrate, wherein the first radiation source is configured as a microstrip line extending from the first feeding end to the first feeding end along the line connecting the second feeding end to the first feeding end, and the second radiation source is configured as a microstrip line extending from the second feeding end to the second feeding end along the line connecting the first feeding end to the second feeding end.

74. The microwave Doppler detection device according to claim 73, wherein a surface of the dielectric substrate carrying the first radiation source and the second radiation source is parallel to the electromagnetic reflection surface.

75. The microwave Doppler detection device according to claim 74, wherein the microwave Doppler detection module comprises two pairs of the dual coupled poles, wherein the two first feeding ends of the two first radiation source poles of the two pairs of the dual coupled poles are electrically connected, wherein the two second feeding ends of the two second radiation source poles of the two pairs of the dual coupled poles are electrically connected, wherein the connection line of the two second feeding ends crosses the connection line of the two first feeding ends, and the connection line between the first feeding end and the second feeding end of one pair of the dual coupled poles is parallel to the connection line between the first feeding end and the second feeding end of another pair of the dual coupled poles.

76. The microwave Doppler detection device according to claim 73, wherein a surface of the dielectric substrate carrying the first radiation source and the second radiation source is perpendicular to the electromagnetic reflection surface, and a line connecting the first feeding end and the second feeding end is perpendicular to the electromagnetic reflection surface.

77. The microwave Doppler detection device according to claim 76, wherein the microwave Doppler detection module comprises two pairs of the dual coupled poles, wherein the two first feeding ends of the two first radiation source poles of the two pairs of the dual coupled poles are electrically connected, wherein the two second feeding ends of the two second radiation source poles of the two pairs of the dual coupled poles are electrically connected, wherein the connection line of the two second feeding ends crosses the connection line of the two first feeding ends, and the connection line between the first feeding end and the second feeding end of one pair of the dual coupled poles is parallel to the connection line between the first feeding end and the second feeding end of another pair of the dual coupled poles.

78. The microwave Doppler detection device according to claim 73, wherein a surface of the dielectric substrate carrying the first radiation source and the second radiation source is perpendicular to the electromagnetic reflection surface, and a line connecting the first feeding end and the second feeding end is parallel to the electromagnetic reflection surface.

79. The microwave Doppler detection device according to claim 78, wherein the microwave Doppler detection module comprises two pairs of the dual coupled poles, wherein the two first feeding ends of the two first radiation source poles of the two pairs of the dual coupled poles are electrically connected, wherein the two second feeding ends of the two second radiation source poles of the two pairs of the dual coupled poles are electrically connected, wherein the connection line of the two second feeding ends crosses the connection line of the two first feeding ends, and the connection line between the first feeding end and the second feeding end of one pair of the dual coupled poles is parallel to the connection line between the first feeding end and the second feeding end of another pair of the dual coupled poles.

80. The microwave Doppler detection device according to claim 72, wherein the first feeding end of the first radiation source and the second feeding end of the second radiation source are carried on the same surface of the dielectric substrate, wherein the first radiation source extends with the first feeding end as the end along the direction of the line from the second feeding end to the first feeding end, and continues to extend around the side of the dielectric substrate to the other surface of the dielectric substrate, wherein the second radiation source extends with the second feeding end as the end along the direction of the line from the first feeding end to the second feeding end, and continues to extend around the side of the dielectric substrate to the other surface of the dielectric substrate.

81. The microwave Doppler detection device according to claim 72, wherein the first feeding end of the first radiation source and the second feeding end of the second radiation source are respectively carried on two opposite surfaces of the dielectric substrate, wherein the first radiation source extends from the first feeding end to one side of the dielectric substrate and continues to extend around the side of the dielectric substrate to the other side of the dielectric substrate, wherein the second radiation source extends from the second feeding end to the other opposite side of the dielectric substrate and continues to extend around the opposite side of the dielectric substrate to the other side of the dielectric substrate.

Images