5.8 G mushroom type antenna microwave module and lamp

Abstract

A 5.8 G mushroom type antenna microwave module comprises a microwave induction circuit board and an antenna electrically connected with the microwave induction circuit board, the antenna comprises a first end and a second end which are electrically connected with the microwave induction circuit board, and the portion, between the first end and the second end, of the antenna is bent along a mushroom type path to form a signal receiving and transmitting part of the antenna. The utility model further discloses a lamp comprising the 5.8 G mushroom type antenna microwave module. According to the 5.8 G mushroom-shaped antenna microwave module and the lamp, the antenna is bent to form a mushroom-shaped structure, and after high-frequency signals generated by the microwave induction circuit board during working are transmitted out through the antenna, an induction area formed under the high-frequency signals is enlarged, so that the problem of a lower induction blind area existing in a traditional antenna is solved; the maximum hanging height of the 5.8 G mushroom type antenna microwave module reaches 6-7 m, the surrounding induction distance does not change obviously, and the induction effect and reliability of the 5.8 G mushroom type antenna microwave module are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of antenna devices, in particular to a 5.8G mushroom-shaped antenna microwave module and a lamp. Background Art

[0002] The 5.8G microwave induction module is a mobile detector that uses the principle of the Doppler effect. It is mainly used to detect the presence of human beings or various scenarios of moving target sensing, including smart homes, the Internet of Things, and smart lighting. It is widely used in lighting fixtures such as induction bulbs, tubes, and ceiling lamps. The 5.8G microwave modules currently on the market mainly use two types of antennas: columnar antennas and onboard antennas. Among them, the antenna of the columnar antenna module is obtained by welding a piece of iron wire or copper wire on the substrate, and the antenna of the onboard antenna module is obtained by attaching or splicing a PCB antenna on the substrate. Based on the differences in the above two antenna structures, the sensing distance and sensing range of the two are also different. The microwave module can choose the appropriate antenna type according to its product requirements.

[0003] The cylindrical antenna is a common antenna type used in traditional 5.8G microwave modules. Its radiation characteristic is that it radiates in all directions with the antenna as the center. Figure 1 The radiation cross-section diagram of the traditional columnar antenna module is shown. It can be seen that the radiation pattern of the columnar antenna is similar to the shape of a donut, which is full around and hollow in the middle. The interference range around the antenna is large, and the consistency of the sensing distance in all directions is high. However, the closer to the bottom of the antenna, the closer the sensing distance of the antenna, and a blind area will be formed under the antenna within the sensing range. In view of the above characteristics of the columnar antenna, the 5.8G microwave module using the columnar antenna can only be used in lamps with an installation height of less than 3m in actual applications (the side view of the sensing range is shown in the figure below). Figure 2 As shown in the figure, in order to avoid the problem of difficulty in detecting the motion signals of people under the lamp due to the large sensing blind area under the lamp, the optional installation height range of the 5.8G microwave module is small, which affects consumers' planning of the installation location of the lamp. Utility Model Content

[0004] Based on this, it is necessary to provide a 5.8G mushroom-shaped antenna microwave module and lamp that can eliminate the sensing blind area and have a larger installation height range to address the above-mentioned shortcomings.

[0005] A 5.8G mushroom-shaped antenna microwave module includes a microwave sensing circuit board and an antenna electrically connected to the microwave sensing circuit board, wherein the antenna includes a first end and a second end electrically connected to the microwave sensing circuit board, and a portion of the antenna between the first end and the second end is bent along a mushroom-shaped path to form a signal transceiver portion of the antenna.

[0006] In one embodiment, the signal transceiver portion includes a first vertical portion and a second vertical portion that are relatively arranged and electrically connected to the microwave sensor circuit board respectively, a first horizontal portion that is fixed to the top end of the first vertical portion and extends in a direction away from the second vertical portion and is perpendicular to the first vertical portion, a second horizontal portion that is fixed to the top end of the second vertical portion and extends in a direction away from the first vertical portion and is perpendicular to the second vertical portion, and an arc-shaped connecting portion that is located above the first horizontal portion and the second horizontal portion and is fixedly connected to the ends of the first horizontal portion and the second horizontal portion respectively, and the middle portion of the arc-shaped connecting portion is arched in a direction away from the first vertical portion and the second vertical portion.

[0007] In one embodiment, the length of the antenna is between 58-62 mm.

[0008] In one embodiment, the diameter of the antenna is between 1.3-1.7 mm.

[0009] In one of the embodiments, the projection width of the signal transceiver portion on the upper surface of the microwave sensor circuit board is between 23 mm and 27 mm.

[0010] In one embodiment, the distance from the top of the signal transceiver unit to the upper surface of the microwave sensor circuit board is between 12-14 mm.

[0011] In one embodiment, the microwave induction circuit board includes a substrate and a main control circuit, a high-frequency microwave circuit, a voltage stabilizing circuit, a voltage comparison circuit, and a power supply voltage divider circuit arranged on the substrate, the antenna is electrically connected to the high-frequency microwave circuit, the high-frequency microwave circuit and the power supply voltage divider circuit are respectively electrically connected to the voltage comparison circuit, the voltage comparison circuit is electrically connected to the main control circuit, the voltage stabilizing circuit is respectively electrically connected to the main control circuit and an external controlled device, and the power supply voltage divider circuit is electrically connected to an external power supply.

[0012] The utility model also discloses a lamp, comprising a lamp body and a switch electrically connected to the lamp body. The lamp also comprises the above-mentioned 5.8G mushroom-shaped antenna microwave module. The microwave induction circuit board of the 5.8G mushroom-shaped antenna microwave module is electrically connected to the switch to control the on and off of the switch.

[0013] By implementing the 5.8G mushroom-shaped antenna microwave module and lamp of the utility model, the antenna is bent to form a mushroom-shaped structure. After the high-frequency signal generated by the microwave sensing circuit board is transmitted through the antenna, the sensing area formed directly below it is increased, which can make up for the problem of the lower sensing blind area of ​​the traditional antenna. The maximum hanging height of the 5.8G mushroom-shaped antenna microwave module can reach 6-7m, and while eliminating the sensing blind area directly below it and increasing the installation height range of the 5.8G mushroom-shaped antenna microwave module and the lamp, the sensing distance around it does not change significantly, thereby ensuring the sensing effect and reliability of the 5.8G mushroom-shaped antenna microwave module and the lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the radiation cross-section diagram of the traditional cylindrical antenna module;

[0015] Figure 2 It is a side view of the sensing range of a traditional columnar antenna module;

[0016] Figure 3 This is a schematic structural diagram of a 5.8G mushroom-shaped antenna microwave module in an embodiment of the utility model;

[0017] Figure 4 The radiation pattern of a 5.8G mushroom-shaped antenna microwave module in one embodiment of the utility model;

[0018] Figure 5 This is a radiation direction simulation diagram of a 5.8G mushroom-shaped antenna microwave module in an embodiment of the utility model;

[0019] Figure 6 A side view of the sensing range of a 5.8G mushroom-shaped antenna microwave module when it is suspended in one embodiment of the utility model;

[0020] Figure 7 A top view of the sensing range of a 5.8G mushroom-shaped antenna microwave module when it is suspended in one embodiment of the utility model;

[0021] Figure 8 This is a circuit module diagram of a 5.8G mushroom-shaped antenna microwave module in one embodiment of the utility model;

[0022] Fig. 9 A circuit diagram of a main control circuit in one embodiment of the utility model;

[0023] Fig.10 A circuit diagram of a high-frequency microwave circuit in one embodiment of the utility model;

[0024] Fig.11 A circuit diagram of a voltage stabilizing circuit in one embodiment of the utility model;

[0025] Fig.12 A circuit diagram of a voltage comparison circuit in one embodiment of the utility model;

[0026] Fig.13 The figure is a circuit diagram of a power voltage divider circuit in one embodiment of the utility model. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0028] See also Figure 3 The utility model discloses a 5.8G mushroom-shaped antenna microwave module that can eliminate the induction blind area and has a large installation height range. The 5.8G mushroom-shaped antenna microwave module includes a microwave sensing circuit board 100 and an antenna 200 electrically connected to the microwave sensing circuit board 100. The microwave sensing circuit board 100 generates a high-frequency signal after being powered on. The high-frequency signal is further radiated to its surroundings in the form of microwaves through the antenna 200, and a sensing area is formed. When a moving human body or object enters the sensing area, the radiated microwaves are reflected back by the human body, and the reflected microwaves will affect the circuit oscillation frequency of the microwave sensing circuit board 100. In this way, by detecting the change of the oscillation frequency in the circuit, the movement of the human body or object in its sensing area can be determined. The antenna 200 is a converter, which is used to convert the guided wave propagating on the transmission line into an electromagnetic wave propagating in an unbounded medium (usually free space), or to perform the opposite conversion. In this embodiment, the antenna 200 is used as a detection device for the 5.8G mushroom-shaped antenna microwave module, which specifically transmits the high-frequency signal generated by the microwave sensing circuit board 100 to the environment in the form of electromagnetic waves, and then receives the electromagnetic waves reflected back from the environment and transmits them to the microwave sensing circuit board 100 in the form of electrical signals, so that the microwave sensing circuit board 100 can detect changes in the environment.

[0029] In this embodiment, the antenna 200 includes a first end and a second end electrically connected to the microwave sensor circuit board 100 , and a portion of the antenna 200 between the first end and the second end is bent along a mushroom-shaped path to form a signal transceiver portion of the antenna 200 . It can also be understood that the antenna 200 forms a mushroom-shaped transceiver after being bent, and the signal transceiver portion includes a first vertical portion 110 and a second vertical portion 120 which are arranged opposite to each other and electrically connected to the microwave sensor circuit board 100 respectively, a first horizontal portion 130 which is fixed to the top of the first vertical portion 110 and extends in a direction away from the second vertical portion 120 and is perpendicular to the first vertical portion 110, a second horizontal portion 140 which is fixed to the top of the second vertical portion 120 and extends in a direction away from the first vertical portion 110 and is perpendicular to the second vertical portion 120, and an arc-shaped connecting portion 150 which is located above the first horizontal portion 130 and the second horizontal portion 140 and is fixedly connected to the ends of the first horizontal portion 130 and the second horizontal portion 140 respectively, and the middle portion of the arc-shaped connecting portion 150 is arched in a direction away from the first vertical portion 110 and the second vertical portion 120. Figure 3-7 By designing the antenna 200 as a mushroom-shaped structure, due to the setting of the arc-shaped connecting portion 150, a bulge is formed on the side of the folded antenna 200 facing away from the microwave sensing circuit board 100. When the 5.8G mushroom-shaped antenna microwave module is suspended, the arc-shaped connecting portion 150 of the antenna 200 is located below the microwave sensing circuit board 100, and the microwave (electromagnetic wave) radiated by the raised arc-shaped connecting portion 150 is at a lower height, thereby compensating for the induction blind area problem that originally existed directly below the cylindrical antenna 200. In addition, due to the existence of the first horizontal portion 130 and the second horizontal portion 140, a large induction range is ensured around the microwave sensing circuit board 100, thereby ensuring the overall induction effect of the 5.8G mushroom-shaped antenna microwave module, so that it can eliminate the induction blind area directly below while meeting the higher suspension height, and ensure that it has a large induction range in the horizontal direction.

[0030] In one embodiment, the line length of the antenna 200 is between 58-62 mm; the diameter of the antenna 200 is between 1.3-1.7 mm; the projection width of the signal transceiver on the upper surface of the microwave sensing circuit board 100 is between 23-27 mm; the distance from the top of the signal transceiver to the upper surface of the microwave sensing circuit board 100 is between 12-14 mm. Preferably, the line length of the antenna 200 is 60 mm, the diameter of the antenna 200 is 1.5 mm, the projection width of the signal transceiver on the upper surface of the microwave sensing circuit board 100 is 25 mm, and the distance from the top of the signal transceiver to the upper surface of the microwave sensing circuit board 100 is 13 mm. In other embodiments, according to the requirements of the model of the lamp, the hanging height of the lamp, etc., the parameters such as the line length, diameter, width and height of the signal transceiver of the antenna 200 can be further adjusted, which will not be repeated here.

[0031] See also Figure 8 The microwave sensing circuit board includes a substrate and a main control circuit 110, a high-frequency microwave circuit 120, a voltage stabilizing circuit 130, a voltage comparison circuit 140, and a power voltage divider circuit 150 arranged on the substrate. The antenna is electrically connected to the high-frequency microwave circuit 120, and the high-frequency microwave circuit 120 and the power voltage divider circuit 150 are electrically connected to the voltage comparison circuit 140 respectively. The voltage comparison circuit 140 is electrically connected to the main control circuit 110, and the voltage stabilizing circuit 130 is electrically connected to the main control circuit 110 and the external controlled device respectively, and the power voltage divider circuit 150 is electrically connected to the external power supply. During the operation of the 5.8G mushroom-shaped antenna microwave module, the power voltage divider circuit 150 receives voltage from an external power supply and supplies power to the main control circuit 110. The high-frequency microwave circuit 120 oscillates and generates an oscillation signal, which is transmitted to the environment in the form of electromagnetic waves through the antenna and forms a signal such as Figure 6 In the sensing area shown, when a person or an object enters the sensing area, the electromagnetic wave reflected by the person or the object is received by the antenna again, and the signal is fed back to the high-frequency microwave circuit 120, so that the oscillation frequency of the high-frequency microwave circuit 120 changes. In this way, the voltage comparison circuit 140 compares the voltage of the high-frequency microwave circuit 120 with the reference voltage to determine whether there is a person or an object moving in the sensing area. When a valid signal is detected (i.e., there is a person or an object moving), the main control circuit 110 sends an electrical signal, which is further transmitted to the external controlled device after being stabilized by the voltage stabilizing circuit 130 to drive the external controlled device.

[0032] Please further combine Figure 9-13In this embodiment, the main control circuit includes a single-chip microcomputer U1 of model FT61F02F-MRB, which is electrically connected to an external power supply (5V), including an RX pin and a TX pin for transmitting and receiving data with an external device, a CLK pin connected to a clock, a LUX pin connected to an external photoresistor or a photosensitive circuit, a DAT pin connected to a storage module to store data, an RF pin for accessing an oscillation signal, and an OUT pin for outputting a control signal. The high-frequency microwave circuit includes a single-chip microcomputer U3 of model SMR580M, a capacitor C20 connected to the first pin of the single-chip microcomputer U3 and connected to an antenna, a resistor 12 and a capacitor 19 connected to the third pin of the single-chip microcomputer U3 and grounded, a capacitor C18 connected to the fourth pin of the single-chip microcomputer U3, a capacitor C17 and a resistor R13 connected to the fifth pin of the single-chip microcomputer U3 and arranged in parallel, and resistors R14-16 connected to the seventh pin of the single-chip microcomputer U3 and in parallel, wherein the resistor R14 is grounded through the capacitor C6, and the resistors R15-16 are grounded respectively. The power supply voltage divider circuit includes a resistor R10 connected to the power supply, a resistor R11 arranged in parallel and connected in series with the resistor R10, and a capacitor C16. The power supply voltage divider circuit is used to divide the power supply voltage and output a reference voltage. The voltage comparison circuit includes a voltage comparator U2B and a voltage comparator U2A arranged in series, which are respectively connected to the reference voltage output by the power supply voltage divider circuit, and are connected to the voltage (detection voltage) output by the high-frequency microwave circuit. By comparing the reference voltage and the detection voltage, the comparison result is transmitted to the single-chip microcomputer U1 through the RF pin of the single-chip microcomputer U1, so that the single-chip microcomputer U1 can judge the movement of the person or object according to the detection result. The voltage stabilization circuit includes a voltage stabilizer of model HT7550. When a valid signal appears, the single-chip microcomputer U1 outputs a control voltage through the OUT pin, and the control voltage is stabilized by the voltage stabilizer of the voltage stabilization circuit and transmitted to the controlled device to achieve the purpose of controlling the operation of the controlled device.

[0033] In practical applications, the 5.8G mushroom-shaped antenna microwave module of this embodiment can be applied to household appliances such as lamps, fans, air purifiers, and air conditioners. In addition, the utility model also discloses a lamp, including a lamp body and a switch electrically connected to the lamp body, the lamp also includes the above-mentioned 5.8G mushroom-shaped antenna microwave module, and the microwave induction circuit board of the 5.8G mushroom-shaped antenna microwave module is electrically connected to the switch to control the on and off of the switch.

[0034] In implementing the 5.8G mushroom-shaped antenna microwave module and lamp of the present invention, the antenna 200 is bent to form a mushroom-shaped structure. After the high-frequency signal generated by the microwave sensing circuit board 100 is transmitted through the antenna 200, the sensing area formed directly below it is increased, which can make up for the problem of the lower sensing blind area of ​​the traditional antenna 200. The maximum hanging height of the 5.8G mushroom-shaped antenna microwave module can reach 6-7m, and while eliminating the sensing blind area directly below it and increasing the installation height range of the 5.8G mushroom-shaped antenna microwave module and the lamp, the surrounding sensing distance does not change significantly, thereby ensuring the sensing effect and reliability of the 5.8G mushroom-shaped antenna microwave module and the lamp.

[0035] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A 5.8G mushroom-shaped antenna microwave module, comprising a microwave sensing circuit board and an antenna electrically connected to the microwave sensing circuit board, characterized in that: The antenna comprises a first end and a second end electrically connected to the microwave induction circuit board. The portion between the first end and the second end of the antenna is bent along a mushroom-shaped path to form a signal transceiver portion of the antenna.

2. The 5.8G mushroom-shaped antenna microwave module according to claim 1, characterized in that: The signal transceiver portion includes a first vertical portion and a second vertical portion which are arranged opposite to each other and electrically connected to the microwave sensor circuit board respectively, a first horizontal portion which is fixed at the top end of the first vertical portion and extends in a direction away from the second vertical portion and is perpendicular to the first vertical portion, a second horizontal portion which is fixed at the top end of the second vertical portion and extends in a direction away from the first vertical portion and is perpendicular to the second vertical portion, and an arc-shaped connecting portion which is located above the first horizontal portion and the second horizontal portion and is fixedly connected to the ends of the first horizontal portion and the second horizontal portion respectively, and a middle portion of the arc-shaped connecting portion is arched in a direction away from the first vertical portion and the second vertical portion.

3. The 5.8G mushroom-shaped antenna microwave module according to claim 1, characterized in that: The line length of the antenna is between 58-62 mm.

4. The 5.8G mushroom-shaped antenna microwave module according to claim 1, characterized in that: The diameter of the antenna is between 1.3-1.7 mm.

5. The 5.8G mushroom-shaped antenna microwave module according to claim 1, characterized in that: The projection width of the signal transceiver portion on the upper surface of the microwave sensor circuit board is between 23 mm and 27 mm.

6. The 5.8G mushroom-shaped antenna microwave module according to claim 1, characterized in that: The distance from the top of the signal transceiver to the upper surface of the microwave sensor circuit board is between 12 mm and 14 mm.

7. The 5.8G mushroom-shaped antenna microwave module according to claim 1, characterized in that: The microwave induction circuit board includes a substrate and a main control circuit, a high-frequency microwave circuit, a voltage stabilizing circuit, a voltage comparison circuit, and a power supply voltage divider circuit arranged on the substrate. The antenna is electrically connected to the high-frequency microwave circuit, the high-frequency microwave circuit and the power supply voltage divider circuit are electrically connected to the voltage comparison circuit respectively, the voltage comparison circuit is electrically connected to the main control circuit, the voltage stabilizing circuit is electrically connected to the main control circuit and an external controlled device respectively, and the power supply voltage divider circuit is electrically connected to an external power supply.

8. A lamp, comprising a lamp body and a switch electrically connected to the lamp body, characterized in that: It also includes the 5.8G mushroom-shaped antenna microwave module according to any one of claims 1 to 7, wherein the microwave sensing circuit board of the 5.8G mushroom-shaped antenna microwave module is electrically connected to a switch to control the on and off of the switch.

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