Human body induction device

Abstract

The utility model relates to the technical field of human body induction, in particular to a human body induction device. The human body induction device comprises a main control circuit board and a radar board, the main control circuit board and the radar board are bonded, and the height difference between the main control circuit board and the radar board is 3-5 mm; wherein the radar board comprises a radar chip, an antenna signal transmitting area and an antenna signal receiving area; the master control circuit board comprises a control chip, and the control chip is electrically connected with the radar chip. According to the utility model, the interference of the radar board during antenna signal receiving and transmitting can be reduced, and the available space of the main control circuit board can be increased. The antenna signal transmitting area and the antenna signal receiving area are arranged on the two sides of the radar chip, so that signal mutual interference between antenna signals during transmitting and receiving can be further reduced, and the accuracy of human body induction judgment is improved.

Description

Technical Field

[0001] This utility model relates to the field of human body sensing technology, and in particular to a human body sensing device. Background Technology

[0002] In existing human body sensing devices, the integrated structure of the circuit board often leads to interference in radar reception and transmission due to the internal circuit board structure, resulting in misjudgments of human bodies and other moving targets in the environment. Utility Model Content

[0003] The purpose of this invention is to provide a human body sensing device that can reduce interference from the main control circuit board's circuit structure to the radar board's signal transmission and reception, thereby improving the accuracy of human body sensing.

[0004] The solution to the technical problem of this utility model is: to provide a human body sensing device, comprising:

[0005] The system comprises a main control circuit board and a radar board, wherein the main control circuit board and the radar board are soldered together, and the height difference between the main control circuit board and the radar board is 3 mm to 5 mm; wherein the radar board includes a radar chip, an antenna signal transmitting area, and an antenna signal receiving area, wherein the antenna signal transmitting area and the antenna signal receiving area are respectively located on both sides of the radar chip and are electrically connected to the radar chip; the main control circuit board includes a control chip, and the control chip is electrically connected to the radar chip.

[0006] Furthermore, the radar board includes a main control circuit consisting of the radar chip, a power management module, a data transmission module, and a signal transceiver module, wherein the power management module, the data transmission module, and the signal transceiver module are all connected to the radar chip.

[0007] Furthermore, the power management module includes a power input interface, which is used to connect to a power supply and to the power input terminal of the radar chip.

[0008] Furthermore, the power management module includes a first power output circuit and a second power output circuit. The first power output circuit includes a power input interface, a first capacitor and an inductor, and the power input interface, the first capacitor and inductor, and the first power input terminal of the radar chip are connected in sequence to form the first power output circuit. The second power output circuit includes a power input interface, a second capacitor and an inductor, and the power input interface, the second capacitor and inductor, and the second power input terminal of the radar chip are connected in sequence to form the first power output circuit.

[0009] Furthermore, the data transmission module includes a first data transmission circuit connected to a first data transmission terminal of the radar chip, and a second data transmission circuit connected to a second data transmission terminal of the radar chip.

[0010] Furthermore, the signal transceiver module includes a signal receiving circuit and a signal transmitting circuit; the signal receiving circuit is electrically connected to the antenna signal receiving area through the first signal receiving terminal and the second signal receiving terminal of the radar chip; the signal transmitting circuit is electrically connected to the antenna signal transmitting area through the signal transmitting terminal of the radar chip.

[0011] Furthermore, one end of the main control circuit board is connected to the radar board via pins, and the radar board is soldered onto the main control circuit board to electrically connect the control chip and the radar chip; the other end of the main control circuit board is connected to the radar board via adhesive to fix the radar board onto the main control circuit board.

[0012] Furthermore, the main control circuit board also includes an antenna signal transceiver processing module, an RF module, a power input module, and an inductor-capacitor module, which are sequentially arranged on the side area of ​​the radar board.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a human body sensing device. By bonding the main control circuit board and the radar board, the height difference between the main control circuit board and the radar board is 3 mm to 5 mm. This reduces interference when the radar board receives and transmits antenna signals, while also increasing the usable space of the main control circuit board. Furthermore, by placing the antenna signal transmitting area and the antenna signal receiving area on opposite sides of the radar chip, mutual interference between antenna signals during transmission and reception can be further reduced, improving the accuracy of human body sensing. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0015] Figure 1 This is an overall design drawing of the human body sensing device proposed in an embodiment of this utility model;

[0016] Figure 2 This is a frame diagram of the radar board proposed in an embodiment of the present utility model;

[0017] Figure 3 The following is a detailed circuit diagram of the radar board proposed in an embodiment of this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0019] It should be noted that although functional modules are divided in the system diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the system or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0020] According to one aspect of an embodiment of the present invention, the present invention provides a human body sensing device, including a main control circuit board and a radar board, wherein the main control circuit board and the radar board are bonded together, and the height difference between the main control circuit board and the radar board is 3 mm-5 mm; wherein, the radar board includes a radar chip, an antenna signal transmitting area and an antenna signal receiving area, the antenna signal transmitting area and the antenna signal receiving area are respectively located on both sides of the radar chip, and both are electrically connected to the radar chip; the main control circuit board includes a control chip, and the control chip is electrically connected to the radar chip.

[0021] Specifically, please refer to Figure 1 As shown, Figure 1 This is the overall circuit design diagram of the human body sensing device. The main control circuit board and the radar board are bonded together, with a height difference of 3-5 mm between them. This reduces interference during antenna signal reception and transmission by the radar board, while also increasing the usable space on the main control circuit board. Furthermore, as... Figure 1 TX1 shown is the antenna signal transmission area, such as Figure 1 RX1 and RX2, shown, are the antenna signal receiving areas, located on either side of the radar chip U2. This further reduces signal interference between the antenna signals during transmission and reception, improving the accuracy of human body detection. The radar board in this invention can specifically be a 24G radar module.

[0022] In one embodiment of this utility model, the radar board includes a main control circuit composed of the radar chip, a power management module, a data transmission module, and a signal transceiver module, wherein the power management module, the data transmission module, and the signal transceiver module are all connected to the radar chip.

[0023] Specifically, such as Figure 2 As shown, Figure 2 This is a diagram of the radar board's architecture. The main control circuit, composed of the power management module, data transmission module, and signal transceiver module in the radar board, can realize the reception and transmission of antenna signals from the radar board, as well as data transmission and signal transmission with the control chip.

[0024] In one embodiment of this utility model, the radar board and the main control circuit board are connected via a GPIO port for communication.

[0025] In one embodiment of this utility model, the power management module includes a power input interface, which is used to connect to a power supply and to the power input terminal of the radar chip.

[0026] Specifically, it can be like Figure 3 As shown, Figure 3 The diagram shows the overall circuit of the radar board. The power input terminal is UART_TXD. This power input terminal is connected to the power supply VCC through resistor R4. The 3.3V power supply VCC can provide the operating voltage for the entire radar board.

[0027] In one embodiment of this utility model, the power management module includes a first power output circuit and a second power output circuit. The first power output circuit includes a power input interface, a first capacitor and an inductor, and the power input interface, the first capacitor and inductor, and the first power input terminal of the radar chip are sequentially connected to form the first power output circuit. The second power output circuit includes a power input interface, a second capacitor and an inductor, and the power input interface, the second capacitor and inductor, and the second power input terminal of the radar chip are sequentially connected to form the first power output circuit.

[0028] Specifically, continue to refer to Figure 3 As shown, the first power input terminal and the second power input terminal are respectively Figure 3 VDD_A and VDD in the above are used to provide a positive power supply voltage to the radar board, that is, as the power output of the radar chip, supplying operating voltage to each module in the radar board. Further, the first capacitor and inductor can be specifically... Figure 3 In the context, L1, the second capacitor and inductor can be specifically defined as follows: Figure 3 L2 in the middle.

[0029] In one embodiment of the present invention, the data transmission module includes a first data transmission circuit connected to a first data transmission terminal of the radar chip, and a second data transmission circuit connected to a second data transmission terminal of the radar chip.

[0030] Specifically, the first data transmission terminal may be: Figure 3 In SPI_MOSI_1, the second data transmission terminal can be specifically as follows: Figure 3 SPI_MOSI_0 in.

[0031] In one embodiment of this utility model, the signal transceiver module includes a signal receiving circuit and a signal transmitting circuit; the signal receiving circuit is electrically connected to the antenna signal receiving area through the first signal receiving terminal and the second signal receiving terminal of the radar chip; the signal transmitting circuit is electrically connected to the antenna signal transmitting area through the signal transmitting terminal of the radar chip.

[0032] Specifically, the first signal receiving terminal and the second signal receiving terminal are respectively Figure 3 RX1 and RX2 are used for electrical connection of the antenna signal receiving area, and are used to receive the signals received by the antenna signal receiving area. The signal transmitting terminal is... Figure 3 The TX in the diagram is used for electrical connection with the antenna signal transmission area to enable the transmission of antenna signals.

[0033] In one embodiment of this utility model, one end of the main control circuit board is connected to the radar board via a pin to electrically connect the control chip and the radar chip; the other end of the main control circuit board is connected to the radar board via adhesive to fix the radar board on the main control circuit board.

[0034] Specifically, one end of the main control circuit board is connected to the radar board via pins, and the radar board is soldered onto the main control circuit board to electrically connect the control chip and the radar chip; the other end of the main control circuit board is connected to the radar board via adhesive to fix the radar board onto the main control circuit board.

[0035] In one embodiment of this utility model, the main control circuit board further includes an antenna signal transceiver processing module, an radio frequency module, a power input module, and an inductor-capacitor module, which are sequentially arranged in the side area of ​​the radar board.

[0036] Specifically, such as Figure 1 As shown, the transceiver processing module is Figure 1 The area comprised of RX0, TX0, 3V3, and GND contains the radio frequency module. Figure 1 RF1, the power input module is Figure 1 The 5V inductor-capacitor module is Figure 1The area where L1 and C2 are located. By sequentially arranging the antenna signal transceiver processing module, the radio frequency module, the power input module, and the inductor-capacitor module on the side area of ​​the radar board, the entire human body sensing device can be effectively positioned, further reducing interference to the radar board during signal transmission and reception, and improving the accuracy of human body sensing.

[0037] In summary, this utility model provides a human body sensing device. By bonding the main control circuit board and the radar board together, with a height difference of 3-5 mm between them, interference during antenna signal reception and transmission is reduced, while simultaneously increasing the usable space of the main control circuit board. Furthermore, by positioning the antenna signal transmission area and the antenna signal reception area on opposite sides of the radar chip, mutual interference between antenna signals during transmission and reception is further reduced, improving the accuracy of human body sensing.

[0038] The preferred embodiments of the present utility model have been described in detail above, but the utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present utility model.

Claims

1. A human body sensing device, characterized in that, The system includes a main control circuit board and a radar board, which are soldered together. The height difference between the main control circuit board and the radar board is 3 mm to 5 mm. The radar board includes a radar chip, an antenna signal transmitting area, and an antenna signal receiving area. The antenna signal transmitting area and the antenna signal receiving area are located on both sides of the radar chip and are electrically connected to the radar chip. The main control circuit board includes a control chip, which is electrically connected to the radar chip.

2. The human body sensing device according to claim 1, characterized in that, The radar board includes a main control circuit consisting of the radar chip, a power management module, a data transmission module, and a signal transceiver module. The power management module, the data transmission module, and the signal transceiver module are all connected to the radar chip.

3. The human body sensing device according to claim 2, characterized in that, The power management module includes a power input interface, which is used to connect to a power supply and to the power input terminal of the radar chip.

4. The human body sensing device according to claim 3, characterized in that, The power management module includes a first power output circuit and a second power output circuit. The first power output circuit includes a power input interface, a first capacitor and an inductor, and the power input interface, the first capacitor and inductor, and the first power input terminal of the radar chip are connected in sequence to form the first power output circuit. The second power output circuit includes a power input interface, a second capacitor and an inductor, and the power input interface, the second capacitor and inductor, and the second power input terminal of the radar chip are connected in sequence to form the first power output circuit.

5. The human body sensing device according to claim 4, characterized in that, The data transmission module includes a first data transmission circuit connected to a first data transmission terminal of the radar chip, and a second data transmission circuit connected to a second data transmission terminal of the radar chip.

6. The human body sensing device according to claim 5, characterized in that, The signal transceiver module includes a signal receiving circuit and a signal transmitting circuit; the signal receiving circuit is electrically connected to the antenna signal receiving area through the first signal receiving terminal and the second signal receiving terminal of the radar chip; the signal transmitting circuit is electrically connected to the antenna signal transmitting area through the signal transmitting terminal of the radar chip.

7. The human body sensing device according to claim 6, characterized in that, The main control circuit board is connected to one end of the radar board via pins, and the radar board is soldered onto the main control circuit board to electrically connect the control chip and the radar chip; the other end of the main control circuit board is connected to the radar board via adhesive to fix the radar board onto the main control circuit board.

8. The human body sensing device according to claim 7, characterized in that, The main control circuit board also includes an antenna signal transceiver processing module, an RF module, a power input module, and an inductor-capacitor module, which are sequentially arranged on the side area of ​​the radar board.

Images