Intelligent equipment based on microwave detection

Abstract

The utility model provides an intelligent device based on microwave detection, the intelligent device based on microwave detection comprises a mounting plate and an antenna, the mounting plate is provided with a metal surface formed on one surface of the mounting plate and is provided with an antenna port, the antenna is arranged in the antenna port, and an expansion reference ground can be formed by means of the metal surface. Therefore, the reference ground area of the antenna is expanded, and the occupied area of the antenna on the mounting plate can be reduced.

Description

Technical Field

[0001] The utility model relates to the application field of Doppler microwave detection, in particular to an intelligent device based on microwave detection. Background Art

[0002] Microwave detection technology works based on the principle of microwave Doppler effect. It can detect activities in a target space to determine whether there is a human body entering and existing in the target space, thereby detecting moving objects without infringing on people's privacy. Therefore, it can serve as an important hub connecting people and objects, and objects and objects, and can be used in behavior detection and existence detection, and has broad application prospects. Specifically, the corresponding microwave detector is fed by an excitation signal and emits a microwave beam with a frequency corresponding to the excitation signal to the target space, thereby forming a detection area in the target space, and receives a reflected echo formed by the microwave beam being reflected by the corresponding object in the detection area and transmits an echo signal corresponding to the frequency of the reflected echo to a mixing and detection unit, wherein the mixing and detection unit mixes the excitation signal and the echo signal and outputs a Doppler intermediate frequency signal corresponding to the frequency / phase difference between the excitation signal and the echo signal. Based on the principle of the Doppler effect, when the object that reflects the microwave beam is in motion, there is a certain frequency / phase difference between the echo signal and the excitation signal, and the Doppler intermediate frequency signal presents corresponding amplitude fluctuations to feedback human body activities.

[0003] Existing microwave detectors are primarily categorized by the structure of their radiation sources: those with cylindrical radiation sources and those with flat-plate radiation sources. Structurally, because the cylindrical radiation source of a cylindrical microwave detector is perpendicular to its reference ground, it tends to occupy more space during installation than a flat-plate microwave detector. When used in a lamp, the radiation source significantly protrudes from the lamp panel, preventing the lampshade from properly fitting in front of the panel and requiring a specially designed protruding area to accommodate the radiation source, impacting the lamp's aesthetics. Furthermore, cylindrical microwave detectors lack directional radiation capability, making it difficult to align with the target detection area and resulting in poor detection accuracy.

[0004] Therefore, in today's aesthetic trend toward a compact and concise appearance, microwave detectors with flat-panel radiation source structures are highly favored due to their small footprint and relative stability. The planar dimensions of a microwave detector with a flat-panel radiation source structure in the direction of its reference ground are directly limited by the area of ​​its reference ground. However, since a microwave detector with a flat-panel radiation source structure has certain dimensional requirements for its flat-panel radiation source, the area of ​​its reference ground also has certain dimensional requirements, even if the structure is larger than the area of ​​its flat-panel radiation source. Consequently, the planar dimensions of a microwave detector with a flat-panel radiation source structure in the direction of its reference ground are difficult to reduce relative to the planar dimensions of a microwave detector with a columnar radiation source structure in the direction of its reference ground. Consequently, when a microwave detector with a flat-panel radiation source structure is installed on a lamp, it occupies a large area on the lamp panel, affecting the proper arrangement of the lamp beads on the lamp panel and thus affecting the normal illumination of the lamp. Moreover, whether it is a microwave detector with a columnar radiation source structure or a microwave detector with a flat-plate radiation source structure, the existing microwave detectors require that their reference ground area must be greater than λ / 4, otherwise their radiation performance will be sharply weakened, and it will be difficult to form good directional radiation characteristics, and their anti-interference performance and stability will deteriorate, affecting their normal operation. Therefore, under the structural limitation that the reference ground area must be greater than λ / 4, the existing microwave detectors will occupy a larger area on the light board when they are set on smart devices based on microwave detection.

[0005] That is to say, the currently common microwave detectors with the columnar radiation source structure and the microwave detectors with the flat-plate radiation source structure have obvious defects in their application to lamps. They easily occupy the space of the lamps in terms of structure, affecting the normal lighting of the lamps. Utility Model Content

[0006] One object of the present utility model is to provide an intelligent device based on microwave detection, wherein the intelligent device based on microwave detection includes an antenna, the antenna performs microwave detection on a target area based on the Doppler microwave detection principle, and controls the operation of the intelligent device based on microwave detection based on the detection results, wherein the antenna can cooperate with a mounting plate in the intelligent device based on microwave detection, and expand its reference ground area with the help of the mounting plate, so as to facilitate improving the gain of the antenna in the directional radiation direction.

[0007] Another object of the present utility model is to provide an intelligent device based on microwave detection, wherein the antenna expands its reference ground area with the help of the mounting plate to improve the symmetry of its detection beam, thereby improving the coverage of the target detection area.

[0008] Another object of the present utility model is to provide an intelligent device based on microwave detection, wherein the reference ground of the antenna can be extended with the aid of the mounting plate, so that the radiation energy of the antenna in the directional radiation direction is more uniform, thereby improving the degree of matching with the target detection area.

[0009] Another object of the present utility model is to provide an intelligent device based on microwave detection, wherein the antenna can operate normally by expanding its reference ground area based on the mounting plate, thereby reducing the reference ground area of ​​the antenna, so that the planar size of the antenna in the direction of its reference ground can be reduced, thereby reducing the area occupied by the antenna on the mounting plate.

[0010] Another object of the present utility model is to provide an intelligent device based on microwave detection, wherein the height of the antenna is reduced relative to the height of the existing microwave detection antenna with a columnar radiation source structure, thereby ensuring the aesthetics of the intelligent device based on microwave detection and avoiding the antenna from blocking the intelligent device based on microwave detection.

[0011] Another object of the present utility model is to provide an intelligent device based on microwave detection, wherein the antenna includes a substrate, an antenna reference ground and a radiation source, wherein the antenna reference ground is carried on the substrate and has a size less than λ / 4 in at least one direction passing through its physical center point, wherein the radiation source is fixed to the substrate, wherein λ is a wavelength parameter corresponding to the frequency of the antenna, wherein the antenna can form an extended reference ground with the aid of the mounting plate on the intelligent device based on microwave detection, so that the antenna can still have a directional radiation characteristic with uniform radiation when the size of the antenna reference ground in at least one direction is less than λ / 4.

[0012] Another object of the present utility model is to provide an intelligent device based on microwave detection, wherein the intelligent device based on microwave detection includes the mounting plate and the antenna, wherein the mounting plate can be a metal lamp board, a metal shell, a metal plate with a lamp board mounted thereon, or a non-metallic plate or shell carrying a metal surface or metal layer, wherein the mounting plate has a metal surface formed on one side thereof and has an antenna port, wherein the substrate is mounted on the mounting plate, and the antenna reference ground is flush with the metal surface, so that the mounting plate constitutes an extended reference ground, so that the mounting plate and the antenna reference ground cooperate to form an integrated reference ground to expand the reference ground area of ​​the antenna, so that the antenna reference ground can still have a uniform directional radiation characteristic when the size of the antenna reference ground in at least one direction is less than λ / 4.

[0013] Another object of the present utility model is to provide an intelligent device based on microwave detection, wherein the antenna includes a conductive grounding body, wherein the conductive grounding body is arranged on a side of the substrate carrying the antenna reference ground and is electrically connected to the antenna reference ground, wherein the side of the conductive grounding body away from the substrate is the top surface, and the distance between the top surface of the conductive grounding body and the substrate is greater than the distance between the antenna reference ground and the substrate, thereby extending and raising the antenna reference ground, wherein the area of ​​the conductive grounding body is smaller than the area of ​​the substrate, that is, the vertical projection area of ​​the conductive grounding body on the plane where the antenna reference ground is located. Smaller than the vertical projection area of ​​the substrate on the plane where the antenna reference ground is located, wherein the antenna is arranged in a state where the top surface of the conductive grounding body is flush with the metal surface, so that the antenna reference ground is equivalent to being flush with the metal surface, then the size of the antenna opening only needs to match the conductive grounding body, that is, the size of the antenna opening is sufficient for the conductive grounding body to pass through, based on the structural relationship between the size of the antenna opening and the conductive grounding body, the size of the opening on the mounting plate can be effectively reduced, thereby reducing the footprint of the antenna on the mounting plate and ensuring the normal radiation of the antenna.

[0014] Another object of the present utility model is to provide an intelligent device based on microwave detection, wherein the antenna is arranged in a state where the conductive grounding body passes through the antenna port from the back side of the mounting plate. Based on the electrical connection between the conductive grounding body and the antenna reference ground, the antenna only needs to protrude from the antenna port in a state where the top surface of the conductive grounding body is flush with the metal surface of the mounting plate, so that the mounting plate can cooperate to form an integrated reference ground, effectively reducing the height of the antenna above the metal surface of the mounting plate, thereby ensuring the aesthetics of the intelligent device based on microwave detection and preventing the antenna from blocking light.

[0015] Another object of the present utility model is to provide an intelligent device based on microwave detection, wherein the radiation source is arranged in the form of a radiation source and has a feeding end and an end, wherein the radiation source first extends from the feeding end in a direction away from the antenna reference ground on the side of the substrate carrying the antenna reference ground, and then is bent and further extended to form a folded extension section spaced apart from the antenna reference ground, wherein based on the bending of the radiation source, the height dimension of the antenna in the direction perpendicular to the antenna reference ground is reduced, thereby ensuring the aesthetics of the intelligent device based on microwave detection and preventing the antenna from blocking light.

[0016] Another object of the present utility model is to provide an intelligent device based on microwave detection, wherein a section of the radiation source extending away from the antenna reference ground is defined as a vertical section, wherein the conductive grounding body has a avoidance groove, wherein the conductive grounding body is arranged at intervals from the vertical section in a state where the vertical section is inserted into the avoidance groove, so as to ensure that the conductive grounding body covers the area below the radiation source and ensures the coupling between the conductive grounding body and the mounting plate.

[0017] Another object of the present utility model is to provide an intelligent device based on microwave detection, wherein the vertical projection of the folded extension section on the top surface is used as the dividing line of the top surface, and the top surface is concave toward the dividing line on both sides of the dividing line, so that the radiation energy of the antenna in the directional radiation direction is more uniform.

[0018] According to one aspect of the present invention, the present invention provides a smart device based on microwave detection, wherein the smart device based on microwave detection comprises:

[0019] An antenna, wherein the antenna comprises a substrate, an antenna reference ground, and a radiation source, wherein the antenna reference ground is carried on the substrate and has a dimension smaller than λ / 4 in at least one direction passing through its physical center point, wherein the radiation source is fixed to the substrate, wherein λ is a wavelength parameter corresponding to the frequency of the antenna;

[0020] A mounting plate is formed on a metal surface on one side of the mounting plate and has an antenna port, wherein the substrate is mounted on the mounting plate, and the antenna reference ground is flush with the metal surface so that the mounting plate constitutes an extended reference ground.

[0021] In one embodiment, the radiation source is selected from a planar radiation source, a dual-coupled pole, a half-wave oscillator, and a strip oscillator.

[0022] In one embodiment, in a state where the radiation source is arranged in the form of a strip oscillator, the radiation source has a feeding end, wherein the radiation source first extends from the feeding end in a direction away from the antenna reference ground on a side of the substrate carrying the antenna reference ground, and then is bent and further extended to form a folded extension section spaced apart from the antenna reference ground.

[0023] In one embodiment, the antenna includes an antenna substrate, wherein when the radiation source is a dual-coupled pole, a half-wave dipole, or a strip dipole, the radiation source is carried on the antenna substrate in the form of a strip conductor.

[0024] In one embodiment, the radiation source has an insertion section extending from the feeding end toward the substrate, wherein the insertion section is inserted into the substrate in a state of being spaced apart from the antenna reference ground.

[0025] In one embodiment, the mounting plate is a non-metallic plate, wherein the mounting plate is covered with a metal layer or a metal sheet around the antenna opening to form the metal surface.

[0026] In one embodiment, the mounting plate is a metal plate.

[0027] In one embodiment, the antenna reference ground and the metal surface are close to each other within a range smaller than λ / 16 and tend to be flush with each other.

[0028] According to another aspect of the present invention, the present invention provides a smart device based on microwave detection, wherein the smart device based on microwave detection comprises:

[0029] An antenna, wherein the antenna comprises a substrate, an antenna reference ground, a radiation source, and a conductive grounding body, wherein the antenna reference ground is carried on the substrate and has a dimension smaller than λ / 4 in at least one direction passing through its physical center point, wherein the radiation source is fixed to the substrate, wherein the conductive grounding body is disposed on a side of the substrate carrying the antenna reference ground and is electrically connected to the antenna reference ground, wherein a side of the conductive grounding body away from the substrate is a top surface, and a distance between the top surface of the conductive grounding body and the substrate is greater than a distance between the antenna reference ground and the substrate, thereby extending and raising the antenna reference ground, wherein an area of ​​the conductive grounding body is smaller than an area of ​​the substrate, and λ is a wavelength parameter corresponding to the frequency of the antenna;

[0030] A mounting plate, wherein the mounting plate has a metal surface formed on one side thereof and a back side opposite to the metal surface, and is provided with an antenna opening, wherein the antenna passes through the mounting plate from the back side through the antenna opening, and is arranged in a state where the top surface of the conductive grounding body is flush with the metal surface, so that the mounting plate constitutes an extended reference ground.

[0031] In one embodiment, the size of the antenna port matches that of the conductive grounding body.

[0032] In one embodiment, the radiation source is selected from one of a dual-coupled pole, a half-wave oscillator, and a strip oscillator.

[0033] In one embodiment, when the radiation source is arranged in the form of a strip oscillator, the radiation source has a feeding end, wherein the radiation source first extends from the feeding end on the side of the substrate carrying the antenna reference ground in a direction away from the antenna reference ground, and then is bent and further extended to form a folded extension section spaced apart from the antenna reference ground, wherein the conductive grounding body is located between the folded extension section and the antenna reference ground, wherein the height direction of the conductive grounding body is perpendicular to the direction of the antenna reference ground, and the height of the conductive grounding body is less than the distance between the folded extension section and the antenna reference ground.

[0034] In one embodiment, a vertical projection of the folded extension section on the top surface is used as a dividing line of the top surface, wherein the top surface is concave toward the dividing line on both sides of the dividing line.

[0035] In one embodiment, a section of the radiation source extending away from the antenna reference ground is defined as a vertical section, wherein the conductive grounding body has a avoidance groove, and the conductive grounding body is arranged to be spaced apart from the vertical section in a state where the vertical section is inserted into the avoidance groove.

[0036] In one embodiment, the antenna includes an antenna substrate, wherein the radiation source is carried on the antenna substrate in the form of a strip conductor.

[0037] In one embodiment, the radiation source has an insertion section extending from the feeding end toward the substrate, wherein the insertion section is inserted into the substrate in a state of being spaced apart from the antenna reference ground.

[0038] In one embodiment, the conductive grounding body is implemented as a PCB board, wherein the top surface of the PCB board is covered with a conductive layer and electrically connected to the reference ground.

[0039] Further objectives and advantages of the present invention will be fully reflected through understanding of the following description and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 FIG. 1 is a schematic diagram of the basic structure of an antenna according to a first embodiment of the present invention.

[0041] Figure 2 FIG. 1 is a structural diagram of the antenna according to the first embodiment of the present invention.

[0042] Figures 3A to 3C FIG. 1 is a simulation diagram of the structure of the antenna according to the first embodiment of the present invention.

[0043] Figure 42 is a schematic structural diagram of a microwave detection-based intelligent device including the antenna according to the first embodiment of the present invention.

[0044] Figures 5A to 5C To correspond Figure 4 The simulation schematic diagram of the microwave detection-based smart device is shown.

[0045] Figure 6 FIG. 1 is a schematic diagram of an optimized structure of the antenna according to the first embodiment of the present invention.

[0046] Figure 7 FIG. 1 is a schematic diagram of a preferred structure of the antenna according to the first embodiment of the present invention.

[0047] Figures 8A to 8C FIG. 1 is a simulation diagram of the preferred structure of the antenna according to the first embodiment of the present invention.

[0048] Figure 9 1 is a schematic structural diagram of an intelligent device based on microwave detection including the antenna having a preferred structure according to the first embodiment of the present utility model.

[0049] 10A to 10C To correspond Figure 9 The simulation schematic diagram of the microwave detection-based smart device is shown.

[0050] Figure 11 FIG. 1 is a schematic diagram of a preferred modified structure of the antenna according to the first embodiment of the present invention.

[0051] 12A to 12D FIG. 1 is a simulation diagram of the preferred deformation structure of the antenna according to the first embodiment of the present invention.

[0052] Figure 13 1 is a structural diagram of an intelligent device based on microwave detection including the antenna having a preferred deformed structure according to the first embodiment of the present invention.

[0053] 14A to 14D To correspond Figure 13 The simulation schematic diagram of the microwave detection-based smart device is shown.

[0054] Figure 15 FIG. 1 is a schematic diagram of a modified structure of the antenna according to the first embodiment of the present invention.

[0055] Figure 16 Schematic diagram of a modified structure of the intelligent device based on microwave detection according to the first embodiment of the present invention.

[0056] Figure 172 is a schematic diagram of an implementation structure of the intelligent device based on microwave detection according to the first embodiment of the present utility model.

[0057] Figure 18 2 is a schematic diagram of an implementation structure of the intelligent device based on microwave detection according to the first embodiment of the present utility model.

[0058] Figure 19 2 is a schematic diagram of an implementation structure of the intelligent device based on microwave detection according to the first embodiment of the present utility model.

[0059] Figure 20 FIG. 4 is a schematic structural diagram of an intelligent device based on microwave detection according to a second embodiment of the present invention.

[0060] Figure 21 FIG. 4 is a schematic structural diagram of an intelligent device based on microwave detection according to a third embodiment of the present invention.

[0061] Figure 22 FIG. 4 is a schematic structural diagram of an intelligent device based on microwave detection according to a fourth embodiment of the present invention.

[0062] Figure 23 FIG. 1 is a structural diagram of an antenna according to a fifth embodiment of the present invention.

[0063] Figure 24 FIG1 is a structural diagram of the antenna according to the fifth embodiment of the present invention being accommodated in a corresponding housing.

[0064] Figure 25 FIG. 4 is a schematic structural diagram of a smart device based on microwave detection including the antenna according to the fifth embodiment of the present invention.

[0065] Figure 26 FIG. 1 is a structural diagram of an antenna according to a sixth embodiment of the present invention.

[0066] Figure 27 FIG1 is a structural diagram of the antenna according to the sixth embodiment of the present invention being accommodated in a corresponding housing.

[0067] Figure 28 FIG. 4 is a structural diagram of a microwave detection-based intelligent device including the antenna according to the sixth embodiment of the present invention. DETAILED DESCRIPTION

[0068] The following description is intended to disclose the present invention and enable those skilled in the art to implement the present invention. The preferred embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0069] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying 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 operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0070] 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 elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0071] With reference to the accompanying drawings of the present utility model Figures 1 to 19 According to an embodiment of the present invention, a smart device 100 based on microwave detection and its antenna 10 are illustrated, wherein the antenna 10 is arranged in the smart device 100 based on microwave detection, and can expand its reference ground area with the help of the mounting plate 20 of the smart device 100 based on microwave detection, so as to improve the gain of the antenna 10 in the directional radiation direction, and can also reduce the occupied area of ​​the antenna 10 on the mounting plate 20 based on the optimization of the antenna 10 and the coordination with the mounting plate 20, which is beneficial to ensure the normal operation of the smart device 100 based on microwave detection, wherein the smart device 100 based on microwave detection can be a lamp, a power supply, a microwave detector, etc. including the antenna 10.

[0072] Specifically, refer to Figure 1, a basic structure of the antenna 10 is illustrated, wherein the antenna 10 includes a substrate 13, an antenna reference ground 12 and a radiation source 11, wherein the antenna reference ground 12 is carried on one side of the substrate 13, wherein the radiation source 11 is fixed to the substrate 13, wherein the size of the antenna reference ground 12 in at least one direction passing through its physical center point is less than λ / 4, so as to facilitate reducing the footprint of the antenna 10 in the microwave detection-based smart device 100, wherein λ is a wavelength parameter corresponding to the frequency of the antenna 10.

[0073] In detail, in this embodiment of the present invention, the radiation source 11 is designed in the form of a strip oscillator and has a feeding end 1101 and an end 1102, wherein the radiation source 11 first extends from the feeding end 1101 in a direction away from the antenna reference ground 12 on the side of the substrate 13 carrying the antenna reference ground 12, and is then bent and further extended to form a folded extension section 112 spaced apart from the antenna reference ground 12, wherein based on the bending of the radiation source 11, the height of the end 1102 of the radiation source 11 is lower than the end of the existing columnar radiation source away from the reference ground, so the end 1102 of the radiation source 11 is close to the antenna reference ground 12, that is, the height dimension of the antenna 10 in the direction perpendicular to the antenna reference ground 12 is reduced, thereby ensuring the aesthetics of the microwave detection-based smart device 100 and preventing the antenna 10 from blocking the microwave detection-based smart device 100.

[0074] In particular, in this embodiment of the present invention, the radiation source 11 is bent and extends in a direction parallel to the antenna reference ground 12, that is, the bent extension section 112 is parallel to the antenna reference ground 12, wherein the radiation source 11 is defined as having a section extending away from the antenna reference ground 12 as a vertical section 111, wherein the radiation source 11 is inserted and fixed to the substrate 13, specifically, wherein the radiation source 11 has an insertion section 113 extending toward the substrate 13 at the feeding end 1101, wherein the insertion section 113 is inserted into the substrate 13 in a state spaced apart from the antenna reference ground 12, so as to fix the radiation source 11.

[0075] It is worth mentioning that in some embodiments, the radiation source 11 can be carried on a substrate. Specifically, the antenna 10 includes an antenna substrate, wherein the radiation source 11 is carried on the antenna substrate in the form of a strip conductor, and the antenna substrate is fixed to the substrate 13 to form a structural relationship between the radiation source 11 and the antenna reference ground 12.

[0076] Further, refer to Figure 2In order to improve the stability of the radiation source 11 on the substrate 13, the vertical section 111 is thickened relative to the folded extension section 112, which is beneficial to improve the physical strength of the radiation source 11 and enhance the structural stability of the antenna 10.

[0077] Furthermore, when the antenna 10 is set in the microwave detection-based smart device 100, the mounting plate 20 can cooperate with the antenna 10 so that the antenna 10 can have uniform directional radiation characteristics when its size in at least one direction of the antenna reference ground 12 is less than λ / 4, so as to improve the symmetry of the detection beam of the antenna 10, so that the radiation energy of the antenna 10 in the directional radiation direction is more uniform, thereby improving the degree of matching with the target detection area.

[0078] Specifically, refer to Figures 4 to 5C , the mounting plate 20 has a metal surface 21 formed on one side thereof and a back surface 22 opposite to the metal surface 21, wherein the mounting plate 20 has an antenna port 201, wherein the antenna 10 is arranged in a state where the folded extension section 112 passes through the antenna port 201 from the back surface 22 of the mounting plate 20, so that the mounting plate 20 and the antenna reference ground 12 cooperate to form an integrated reference ground, thereby expanding the reference ground area of ​​the antenna 10, compared Figures 3A to 3C and Figures 5A to 5C It can be seen that after the antenna 10 is set on the mounting plate 20, the gain of the antenna 10 in the directional radiation direction is improved, and the beam is more symmetrical and uniform, so as to improve the matching degree between the antenna 10 and the target detection area.

[0079] It is worth mentioning that the antenna 10 can operate normally based on the expansion of its reference ground area on the mounting plate 20, so that the area of ​​the antenna reference ground 12 of the antenna 10 can be reduced, so that the planar size of the antenna 10 in the direction of its reference ground can be reduced, thereby reducing the footprint of the antenna 10 on the mounting plate 20.

[0080] Preferably, in this structure, the antenna 10 is mounted on the mounting plate 20 at the antenna port 201, and is arranged in a state where the antenna reference ground 12 is flush with the metal surface 21 of the mounting plate 20, so that the mounting plate 20 constitutes an extended reference ground, ensuring the coupling between the antenna reference ground 12 and the mounting plate 20 to form an integrated reference ground, effectively ensuring the expansion of the reference ground area of ​​the antenna 10 by the mounting plate 20, wherein the antenna reference ground 12 is flush with the metal surface 21 means that the antenna reference ground 12 and the metal surface 21 are close to each other within a range of less than λ / 16.

[0081] Furthermore, the present invention further optimizes the structure of the antenna 10 based on the purpose of reducing the footprint of the antenna 10 on the mounting plate 20, that is, reducing the size of the antenna port 201. Figure 6 As shown, the antenna 10 further includes a conductive grounding body 14, wherein the conductive grounding body 14 is arranged on a side of the substrate 13 carrying the antenna reference ground 12 and is electrically connected to the antenna reference ground 12, and the conductive grounding body 14 is located between the folded extension section 112 and the antenna reference ground 12, wherein the height direction of the conductive grounding body 14 is perpendicular to the direction of the antenna reference ground 12, and the height of the conductive grounding body 14 is less than the distance between the end 1102 and the antenna reference ground 12, that is, the conductive grounding body 14 is perpendicular to the direction of the antenna reference ground 12. The side of the grounding body 14 away from the substrate 13 is the top surface 142, and the distance between the top surface 142 of the conductive grounding body 14 and the substrate 13 is greater than the distance between the antenna reference ground 12 and the substrate 13, so that the antenna reference ground 12 is equivalently raised based on the setting of the conductive grounding body 14, wherein the area of ​​the conductive grounding body 14 is smaller than the area of ​​the substrate 13, that is, the vertical projection area of ​​the conductive grounding body 14 on the plane where the antenna reference ground 12 is located is smaller than the vertical projection area of ​​the substrate 13 on the plane where the antenna reference ground 12 is located.

[0082] It is worth mentioning that the conductive grounding body 14 has a avoidance groove 141, wherein the conductive grounding body 14 is arranged at intervals from the vertical section 111 in a state where the vertical section 111 is inserted into the avoidance groove 141, so as to ensure that the conductive grounding body 14 covers the area below the radiation source 11.

[0083] Preferably, reference Figure 7 As shown, the side of the conductive grounding body 14 away from the substrate 13 is the top surface 142, and the vertical projection of the folded extension section 112 on the top surface 142 is the dividing line of the top surface 142, wherein the top surface 142 is concave toward the dividing line on both sides of the dividing line, so that the radiation energy of the antenna 10 in the directional radiation direction is more uniform.

[0084] Specific reference Figures 8A to 8C As shown, compared Figures 3A to 3C It can be seen that the preferred structure of the antenna 10 improves the problem of lateral deviation of the detection beam of the antenna 10 and improves the uniformity of the detection beam of the antenna 10.

[0085] Further references Figure 9Based on the optimization of the antenna 10, when the antenna 10 is set in the microwave detection-based smart device 100, the height perpendicular to the mounting plate 20 and the area occupied by the metal surface 21 can be reduced, wherein the antenna 10 is set in a state where the conductive grounding body 14 passes through the antenna opening 201 from the back side 22 of the mounting plate 20, and based on the electrical connection relationship between the conductive grounding body 14 and the antenna reference ground 12, the antenna 10 only needs to protrude from the antenna opening 201 in a state where the top surface 142 of the conductive grounding body 14 is flush with the metal surface 21 of the mounting plate 20, so that the mounting plate 20 can form the extended reference ground and cooperate with the antenna reference ground 12 to form an integrated reference ground, effectively reducing the height of the antenna 10 above the metal surface 21 of the mounting plate 20, thereby ensuring the aesthetics of the microwave detection-based smart device 100 and preventing the antenna 10 from obstructing the microwave detection-based smart device 100.

[0086] It is worth mentioning that the area of ​​the conductive grounding body 14 is smaller than the area of ​​the substrate 13, so the size of the antenna opening 201 only needs to match the size of the conductive grounding body 14, that is, the size of the antenna opening 201 is sufficient for the conductive grounding body 14 to pass through. Based on the structural relationship between the size of the antenna opening 201 and the conductive grounding body 14, the size of the opening on the mounting plate 20 can be effectively reduced, thereby reducing the footprint of the antenna 10 on the mounting plate 20 and ensuring the normal radiation of the antenna 10.

[0087] refer to 10A to 10C As shown, corresponding to Figure 9 In the structure shown, the antenna 10 has a radiation gain of more than 4.5 dB in the directional radiation direction, and the detection beam tends to be circular, which effectively ensures the detection accuracy of the antenna 10.

[0088] It is worth mentioning that the specific form of the conductive grounding body 14 does not constitute a limitation to the present invention. Figure 11 As shown, the conductive grounding body 14 is implemented as a PCB board to facilitate the installation and fixation of the conductive grounding body 14 on the substrate 13. The upper surface or the upper and lower surfaces of the PCB board are covered with a conductive layer. The conductive grounding body 14 provided in the form of a PCB board is soldered and fixed to the substrate 13 through a metallized semicircular hole. The top surface 142 is electrically connected to the reference ground 12 through a metallized via or a metallized semicircular hole, etc. The position of the top surface 142 close to the radiation source 11 is not covered by metal to ensure the isolation of the radiation source 11 from the conductive grounding body 14. And refer to 12A to 14DAs shown, when the conductive grounding body 14 is implemented as a PCB board, when the antenna 10 is set on the mounting plate 20, the extended reference ground can still be formed with the help of the mounting plate 20, and the antenna 10 has a radiation gain of more than 4.9dB in the directional radiation direction, and the detection beam tends to be circular, with good microwave detection performance and structural stability.

[0089] Furthermore, the conductive grounding body 14 can also be implemented as a metal cover, such as Figure 15 As shown; the conductive grounding body 14 can also be implemented as a metal plate mounted on the substrate 13, or the conductive grounding body 14 can be formed by electroplating metal on a plastic structure.

[0090] It is also worth mentioning that when the microwave detection-based smart device 100 is implemented as a lamp, the mounting plate 20 is preferably a metal lamp plate, such as an aluminum substrate. When the mounting plate 20 is made of non-metallic material, such as Figure 16 As shown, a metal layer or metal sheet 211 can also be covered around the antenna port 201 on the mounting plate 20 to form the metal surface 21. In some embodiments, the mounting plate 20 can also be a metal plate with a light board installed, and the mounting plate 20 has a side that is in the same direction as the light emitting direction of the microwave detection-based smart device 100 as the metal surface 21, and the mounting plate 20 can also be composed of a metal shell, which is not limited by the present invention.

[0091] In addition, based on the design of the present invention, the mounting plate 20 can cooperate with the antenna 10 and be used as a reference ground for the antenna 10, so that the layout of other circuit components of the antenna 10 is more flexible. For example, it can be set on the side of the substrate 13 that carries the antenna reference ground 12, or it can be carried on the other side of the substrate 13, or it can be carried on both sides of the substrate 13. The present invention does not impose any restrictions on this.

[0092] It is understood that the specific form of the mounting plate 20 does not constitute a limitation to the present invention. Figures 17 to 19 As shown, some possible implementation forms of the microwave detection-based smart device 100 when it is implemented as a lamp are shown, specifically corresponding to Figure 17 , wherein the mounting plate 20 is arranged in a circular shape, corresponding to Figure 18 , wherein the mounting plate 20 is provided in a strip shape, corresponding to Figure 19 , wherein the mounting plate 20 is arranged in a rectangular shape.

[0093] It is worth mentioning that in the above embodiments, the form of the radiation source 11 is only for illustration. In other embodiments of the present invention, the radiation source 11 can also be configured in other forms, such as corresponding to Figure 20 In the second embodiment of the present invention, the radiation source 11 is designed as a planar radiation source, wherein the antenna 10 is mounted on the antenna port 201 in a state where the antenna reference ground 12 is flush with the metal surface 21 of the mounting plate 20. Figure 21 In the third embodiment of the present invention, the radiation source 11 is designed in the form of a dual coupled pole. Figure 22 In the fourth embodiment of the present invention, the radiation source 11 is designed in the form of a half-wave oscillator.

[0094] It is worth mentioning that when the radiation source 11 is a dual coupled pole, a half-wave oscillator or a strip oscillator, the radiation source 11 is allowed to be carried on the antenna substrate in the form of a strip conductor, for specific reference Figure 23 As shown in the fifth embodiment of the present invention, the radiation source 11 is designed in the form of a dual coupled pole and is carried on an antenna substrate 15, and is designed as a board, wherein the conductive grounding body 14 is designed in the form of an elliptical pancake. Figure 24 and Figure 25 As shown, the antenna 10 of the fifth embodiment of the present invention is arranged in a housing and applied to a lamp in a specific form, corresponding to Figure 24 , wherein the antenna 10 is accommodated in a corresponding microwave detector housing, wherein the mounting plate 20 can be formed by the housing, and an antenna cover is provided above the radiation source 11 to form a convex hull of the microwave detector housing, corresponding to Figure 25 , the microwave detection-based smart device 100 is implemented as a lamp, the mounting plate 20 is the lamp board of the lamp, and the conductive grounding body 14 has a shape that matches the convex bump of the microwave detector housing. When the convex bump of the microwave detector housing is extended from the antenna opening of the lamp board for installation / installation, the conductive grounding body 14 is flush with the surface of the lamp board, so that the lamp board forms an extended reference ground. Preferably, the conductive grounding body 14 is a PCB board with a conductive layer covering the upper surface or both the upper and lower surfaces, and the upper surface of the PCB board is flush with the surface of the lamp board.

[0095] Further references Figures 26 to 28 The antenna 10 and the corresponding microwave detection-based smart device 100 of the sixth embodiment of the present invention are shown, wherein the radiation source 11 is implemented as a dual coupled pole and is set in a state biased toward one side of the substrate 13, corresponding to Figure 27, wherein the antenna 10 is accommodated in a corresponding microwave detector housing, wherein the mounting plate 20 can be formed by the housing, and an antenna cover is provided above the radiation source 11 to form a convex hull of the microwave detector housing, corresponding to Figure 28 The microwave detection-based smart device 100 is implemented as a lamp, the mounting plate 20 is the lamp panel of the lamp, and the conductive grounding body 14 has a shape that matches the convex shape of the microwave detector housing. When the convex shape of the microwave detector housing extends from the antenna opening of the lamp panel, the conductive grounding body 14 is flush with the surface of the lamp panel, thereby forming an extended reference ground. Preferably, the conductive grounding body 14 is a PCB with a conductive layer covering the upper surface or both the upper and lower surfaces, and the upper surface of the PCB is flush with the surface of the lamp panel.

[0096] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0097] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are provided for illustrative purposes only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. An intelligent device based on microwave detection, characterized in that: include: An antenna, wherein the antenna comprises a substrate, an antenna reference ground, and a radiation source, wherein the antenna reference ground is carried on the substrate and has a dimension smaller than λ / 4 in at least one direction passing through its physical center point, wherein the radiation source is fixed to the substrate, wherein λ is a wavelength parameter corresponding to the frequency of the antenna; A mounting plate, wherein the mounting plate has a metal surface formed on one side thereof and has an antenna port, wherein the substrate is mounted on the mounting plate at the antenna port, and the antenna reference ground is flush with the metal surface, so that the mounting plate constitutes an extended reference ground.

2. The intelligent device based on microwave detection according to claim 1, wherein the radiation source is selected from one of a planar radiation source, a dual coupled pole, a half-wave oscillator and a strip oscillator.

3. The intelligent device based on microwave detection according to claim 2, wherein when the radiation source is set in the form of a strip vibrator, the radiation source has a feeding end, wherein the radiation source first extends away from the antenna reference ground from the feeding end on the side of the substrate carrying the antenna reference ground, and then is bent and further extended to form a folded extension section spaced apart from the antenna reference ground.

4. The intelligent device based on microwave detection according to claim 2, wherein the antenna comprises an antenna substrate, wherein when the radiation source is a dual-coupled pole, a half-wave oscillator or a strip oscillator, the radiation source is carried on the antenna substrate in the form of a strip conductor.

5. The intelligent device based on microwave detection according to claim 3, wherein the radiation source has an insertion section extending from the feeding end toward the substrate, wherein the insertion section is inserted into the substrate in a state spaced apart from the antenna reference ground. 6 . The microwave detection-based smart device according to claim 1 , wherein the mounting plate is a non-metallic plate, wherein the mounting plate is covered with a metal layer or a metal sheet around the antenna port to form the metal surface. The microwave detection-based smart device according to claim 1 , wherein the mounting plate is a metal plate. 8 . The microwave detection-based smart device according to claim 1 , wherein the antenna reference ground and the metal surface are close to each other within a range smaller than λ / 16 and tend to be flush with each other.

9. An intelligent device based on microwave detection, characterized in that: include: An antenna, wherein the antenna comprises a substrate, an antenna reference ground, a radiation source, and a conductive grounding body, wherein the antenna reference ground is carried on the substrate and has a dimension smaller than λ / 4 in at least one direction passing through its physical center point, wherein the radiation source is fixed to the substrate, wherein the conductive grounding body is disposed on a side of the substrate carrying the antenna reference ground and is electrically connected to the antenna reference ground, wherein a side of the conductive grounding body away from the substrate is a top surface, and a distance between the top surface of the conductive grounding body and the substrate is greater than a distance between the antenna reference ground and the substrate, thereby extending and raising the antenna reference ground, wherein an area of ​​the conductive grounding body is smaller than an area of ​​the substrate, and λ is a wavelength parameter corresponding to the frequency of the antenna; A mounting plate, wherein the mounting plate has a metal surface formed on one side thereof and a back side opposite to the metal surface, and is provided with an antenna opening, wherein the antenna passes through the mounting plate from the back side through the antenna opening, and is arranged in a state where the top surface of the conductive grounding body is flush with the metal surface, so that the mounting plate constitutes an extended reference ground. 10 . The microwave detection-based smart device according to claim 9 , wherein the size of the antenna port matches the conductive grounding body. 11 . The intelligent device based on microwave detection according to claim 10 , wherein the radiation source is selected from one of a dual coupled pole, a half-wave oscillator and a strip oscillator.

12. The intelligent device based on microwave detection according to claim 11, wherein when the radiation source is arranged in the form of a strip vibrator, the radiation source has a feeding end, wherein the radiation source first extends from the feeding end in a direction away from the antenna reference ground on the side of the substrate carrying the antenna reference ground, and then is bent and further extended to form a folded extension section spaced apart from the antenna reference ground, wherein the conductive grounding body is located between the folded extension section and the antenna reference ground, wherein the height direction of the conductive grounding body is perpendicular to the direction of the antenna reference ground, and the height of the conductive grounding body is less than the distance between the folded extension section and the antenna reference ground.

13. The intelligent device based on microwave detection according to claim 12, wherein the vertical projection of the folded extension section on the top surface is used as the dividing line of the top surface, and the top surface is concave toward the dividing line on both sides of the dividing line.

14. The intelligent device based on microwave detection according to claim 13, wherein a section of the radiation source extending away from the antenna reference ground is defined as a vertical section, wherein the conductive grounding body has a avoidance groove, wherein the conductive grounding body is arranged to be spaced apart from the vertical section in a state where the vertical section is inserted into the avoidance groove. 15 . The microwave detection-based smart device according to claim 11 , wherein the antenna comprises an antenna substrate, and wherein the radiation source is carried on the antenna substrate in the form of a strip conductor.

16. The microwave detection-based smart device according to claim 12, wherein the radiation source has an insertion section extending from the feeding end toward the substrate, wherein the insertion section is inserted into the substrate in a state spaced apart from the antenna reference ground. 17 . The microwave detection-based smart device according to claim 9 , wherein the conductive grounding body is implemented as a PCB board, wherein the top surface of the PCB board is covered with a conductive layer and electrically connected to the reference ground.

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