Living body detection device

Abstract

The utility model relates to the technical field of living body detection equipment, and discloses a living body detection device which comprises an outer shell and a circuit board. Wherein the outer shell comprises a bottom shell and a radome, and the circuit board is arranged in a space defined by the bottom shell and the radome. One side of the circuit board facing the radome is provided with an antenna array element, and one side of the circuit board back to the radome is provided with a millimeter wave radar chip. The radome is made of a material through which radio waves can pass, and the millimeter wave radar chip is electrically connected with the antenna array element. The bottom shell is provided with a jack, the jack is electrically connected with the circuit board, and the two sides of the outer side of the bottom shell are provided with fixing clamping grooves used for being connected with an installation support. The living body detection device is convenient to install and use, can realize reliable detection of a living body in a vehicle cabin through millimeter waves, is not influenced by ambient light, and can protect privacy security of a user in a vehicle.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of living body detection equipment, concretely relates to a living body detection device. BACKGROUND

[0002] With the development of the automobile industry, the automobile safety problem is paid more and more attention by the majority of consumers, and each vehicle factory is developing living body detection device. The existing living body detection scheme mainly adopts camera, infrared, ultrasonic wave or millimeter wave and other ways to detect the living body object in the vehicle, wherein since the millimeter wave radar has good penetration ability, can detect the living body that is shielded, and is not affected by light conditions, has high spatial resolution and distance resolution, and has strong anti-interference ability, and becomes the best choice of the living body detection scheme in the vehicle cabin. The existing millimeter wave living body detection device has the problems of difficult installation and single function, therefore, a new living body detection device convenient to install and use needs to be set. SUMMARY

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a living body detection device, which is convenient to install in the vehicle and easy to use.

[0004] To solve the above problems, the technical scheme adopted by the utility model is as follows: a living body detection device, comprising a shell body and a circuit board, the shell body comprises a bottom shell and an antenna cover, the circuit board is arranged in the space surrounded by the bottom shell and the antenna cover, the side of the circuit board facing the antenna cover is provided with an antenna array element, the side of the circuit board away from the antenna cover is provided with a millimeter wave radar chip, the antenna cover is made of a material that can be penetrated by radio waves, the millimeter wave radar chip is electrically connected with the antenna array element, the bottom shell is provided with a connector, the connector is electrically connected with the circuit board, and the two sides of the outer side of the bottom shell are provided with fixing clamping grooves for connecting the mounting bracket.

[0005] Compared with the prior art, the living body detection device can be quickly connected with the mounting bracket through the fixing clamping grooves on the two sides of the outer side of the bottom shell, is convenient to install in the vehicle cabin, and is easy to use. The connector can be connected with the whole vehicle system, the door and window state of the vehicle can be obtained by communicating with the whole vehicle, and power supply can be obtained from the whole vehicle, so that the installation and use of the detection device are further facilitated.

[0006] The living body detection device described above, the inner side of the bottom shell is provided with a shielding metal cover that can cover the millimeter wave radar chip.

[0007] The living body detection device described above, the millimeter wave radar chip has an IO interface, an IIC interface, a CAN interface and a UART interface.

[0008] The living body detection device, a temperature sensor is arranged on the side of the circuit board away from the antenna cover, and the temperature sensor is electrically connected with the millimeter wave radar chip through an IIC interface.

[0009] The living body detection device, an audible and visual alarm module is arranged on the side of the circuit board away from the antenna cover, and the audible and visual alarm module is electrically connected with the millimeter wave radar chip through the IO interface.

[0010] The living body detection device, a power management module is arranged on the side of the circuit board away from the antenna cover, the power management module is electrically connected with the connector, and the power management module is electrically connected with the millimeter wave radar chip through the IIC interface.

[0011] The living body detection device, a backup power supply is arranged on the side of the circuit board away from the antenna cover, the backup power supply is electrically connected with the power management module, and the backup power supply is used for supplying power to the millimeter wave radar chip.

[0012] The living body detection device, a whole vehicle communication module is arranged on the side of the circuit board away from the antenna cover, the whole vehicle communication module is electrically connected with the connector, and the whole vehicle communication module is electrically connected with the millimeter wave radar chip through the CAN interface.

[0013] The living body detection device, a wireless communication module is arranged on the side of the circuit board away from the antenna cover, and the wireless communication module is electrically connected with the millimeter wave radar chip through the UART interface.

[0014] The living body detection device, an explosion-proof hole for communication between the inside and the outside is arranged on the bottom shell.

[0015] The utility model will be further explained in detail in connection with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the living body detection device of the embodiment of the utility model;

[0017] Figure 2 It is a structure explosion schematic view of the living body detection device of the embodiment of the utility model;

[0018] Figure 3 It is a principle block diagram of the living body detection device of the embodiment of the utility model;

[0019] Figure 4 It is a mounting mode schematic view of the living body detection device of the embodiment of the utility model.

[0020] Explanation of reference numerals:

[0021] 100 outer shell, 110 antenna cover, 120 bottom shell, 121 connector, 122 fixing slot, 123 explosion-proof hole, 200 circuit board, 300 shielding metal cover. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be described in detail below with reference to Figure 1 and Figure 2 The embodiments of the present application provide a living body detection device, which comprises an outer shell 100 and a circuit board 200. The outer shell 100 comprises a bottom shell 120 and an antenna cover 110, and the circuit board 200 is arranged in a space enclosed by the bottom shell 120 and the antenna cover 110. The side of the circuit board 200 facing the antenna cover 110 is provided with an antenna array element, and the side of the circuit board 200 facing away from the antenna cover 110 is provided with a millimeter wave radar chip. The antenna cover 110 is made of a material that allows radio waves to pass through, and the millimeter wave radar chip is electrically connected to the antenna array element. The antenna array element emits millimeter waves under the control of the millimeter wave radar chip. After the millimeter waves pass through the antenna cover 110, they contact external objects and are reflected back to the antenna array element, thereby achieving detection of external objects. The bottom shell 120 is provided with a connector 121 and a fixing slot 122 for connecting a mounting bracket. The connector 121 is electrically connected to the circuit board 200, and the fixing slot 122 is arranged on both sides of the outer side of the bottom shell 120.

[0023] The living body detection device can be quickly mounted on the mounting bracket through the fixing slot 122, and can be connected to the vehicle system through the connector 121, which is convenient to install and use. The vehicle power supply can be obtained through the connector 121, the door and window status of the vehicle can be obtained, and the millimeter waves can be emitted into the vehicle through the antenna array element to detect whether there is a living body in the vehicle and whether the living body is safe. The inherent advantages of millimeter waves can be utilized to protect the privacy and safety of the vehicle while ensuring reliable and stable detection of the living body in the vehicle.

[0024] Referring to Figure 2 In this embodiment, the inner side of the bottom shell 120 is provided with a shielding technology cavity that can cover the millimeter wave radar chip. The shielding metal cover 300 is used to shield the signal of the millimeter wave radar chip, preventing the radio frequency signal emitted by the antenna array element from affecting the normal operation of the millimeter wave radar chip, thereby improving the reliability of the entire living body detection device.

[0025] Referring to Figure 3In the embodiment, the millimeter wave radar chip is a special radar processor with 60GHz radio frequency transmission capability, and is integrated with a central processing unit, a radio frequency transmission module, a data processing module and a message transceiver module in the chip, and is integrated with CAN communication, UART serial communication, IIC communication, SPI communication and IO communication, etc., to meet the requirements of vehicle-level chip. The temperature sensor, the sound and light alarm module, the power management module, the vehicle communication module and the wireless communication module are arranged on the side of the circuit board 200 away from the antenna cover 110. The temperature sensor and the power management module are electrically connected to the millimeter wave radar chip through the IIC interface, the sound and light alarm module is electrically connected to the millimeter wave radar chip through the IO interface, the vehicle communication module is electrically connected to the millimeter wave radar chip through the CAN interface, and the wireless communication module is electrically connected to the millimeter wave radar chip through the UART interface. The vehicle communication module and the power management module are also electrically connected to the connector 121. In use, the living body detection device obtains vehicle body signals through the vehicle communication module, obtains vehicle window switch signals, key drop lock signals and sunroof switch signals, etc. If the sunroof and the vehicle window are closed, and the vehicle is not started, the antenna array element sends the AB frame of the millimeter wave signal to the vehicle cabin, and the AB frame signal reflected back is collected in an interleaved manner. After filtering out the interference data, the data is accumulated in multiple frames, and whether there is a living body in the vehicle cabin is judged according to the accumulated detection feedback data. If there is a living body, the temperature sensor detects the temperature in the vehicle cabin, and when the temperature exceeds 35 degrees Celsius, the sound and light alarm module is started to issue a sound and light alarm. If the sound and light alarm is still not detected after the sound and light alarm is issued, the wireless communication module sends an alarm signal to the user's mobile phone APP to remind the user to start the vehicle remotely or open the vehicle window or sunroof in time. If no living body is detected, the power management module is controlled to reduce the power supply to the device, so that the device enters a sleep state and reduces the power consumption of the device.

[0026] With reference to Figure 4 In the embodiment, the side of the circuit board 200 away from the antenna cover 110 is also provided with a backup power supply, which is electrically connected to the power management module. The backup power supply is used to supply power to the millimeter wave radar chip when the vehicle is turned off, to maintain the normal operation of the living body detection device. It can be understood that the temperature sensor, the sound and light alarm module, the power management module, the backup power supply, the vehicle communication module and the wireless communication module are all covered by the shielding metal cover 300 to avoid the influence of the radio frequency signals emitted by the antenna array element on the signals between them. The wireless communication module can use a 4G module or a 5G module. In the embodiment, the wireless communication module sends an alarm signal to the user's mobile phone APP through a 5G signal.

[0027] With reference to Figure 1 and Figure 2In the embodiment, in order to improve the security of the living body detection device, the bottom shell 120 is tightly connected with the antenna cover 110 to prevent water vapor from entering the inside of the device and damaging the modules inside the device. Meanwhile, the bottom shell 120 is provided with explosion-proof holes 123 communicating between the inside and the outside, which are used for preventing the internal gas pressure from being too high due to high temperature, and play the roles of explosion prevention and heat dissipation. One end of the explosion-proof hole 123 communicating the inside of the bottom shell 120 is provided with a film through which only gas can pass, so as to prevent water vapor from entering the inside of the device through the explosion-proof hole 123.

[0028] Referring to Figure 4 In use, two living body detection devices of the embodiment can be arranged in the vehicle cabin to detect living body targets in all areas of the vehicle cabin, and the two living body detection devices can be arranged on the front windshield, the rear windshield or the roof of the vehicle according to actual needs. Figure 1 and Figure 2 The mounting bracket can be mounted in the vehicle cabin by magnetic attraction or adhesion, so as to realize quick mounting of the living body detection device.

[0029] It should be noted that, in the description of the present application, if there is a description of the orientation, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed or operated in a specific orientation, and cannot be understood as a limitation on the present application.

[0030] In the description of the present application, the meaning of several is one or more, the meaning of multiple is two and more than two, greater than, less than, more than, etc. are not included in the number, above, below, etc. are included in the number. If there is a description of the first or second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0031] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0032] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential change and replacement made by the person skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A living body detecting apparatus characterized by comprising: The application relates to a millimeter wave radar module, which comprises an outer shell (100) and a circuit board (200), the outer shell (100) comprises a bottom shell (120) and a radome (110), the circuit board (200) is arranged in a space surrounded by the bottom shell (120) and the radome (110), an antenna array element is arranged on one side of the circuit board (200) facing the radome (110), a millimeter wave radar chip is arranged on one side of the circuit board (200) facing away from the radome (110), the radome (110) is made of a material through which radio waves can pass, the millimeter wave radar chip is electrically connected with the antenna array element, a connector (121) is arranged on the bottom shell (120) and is electrically connected with the circuit board (200), and fixing clamping grooves (122) for connecting mounting supports are arranged on the outer side of the bottom shell (120) on both sides.

2. The living body detecting apparatus according to claim 1, wherein A shielding metal cover (300) for covering the millimeter wave radar chip is arranged on the inner side of the bottom shell (120).

3. The living body detecting apparatus according to claim 1, wherein The millimeter wave radar chip has an IO interface, an IIC interface, a CAN interface and a UART interface.

4. The living body detecting apparatus according to claim 3, wherein A temperature sensor is arranged on one side of the circuit board (200) facing away from the radome (110) and is electrically connected with the millimeter wave radar chip through the IIC interface.

5. The living body detecting apparatus according to claim 3, wherein An audible and visual alarm module is arranged on one side of the circuit board (200) facing away from the radome (110) and is electrically connected with the millimeter wave radar chip through the IO interface.

6. The living body detecting apparatus according to claim 3, wherein A power management module is arranged on one side of the circuit board (200) facing away from the radome (110) and is electrically connected with the connector (121) and the millimeter wave radar chip through the IIC interface.

7. The living body detecting apparatus according to claim 3, wherein A backup power supply is arranged on one side of the circuit board (200) facing away from the radome (110) and is electrically connected with the power management module, and is used for supplying power to the millimeter wave radar chip.

8. The living body detecting apparatus according to claim 3, wherein A whole vehicle communication module is arranged on one side of the circuit board (200) facing away from the radome (110) and is electrically connected with the connector (121) and the millimeter wave radar chip through the CAN interface.

9. The living body detecting apparatus according to claim 3, wherein A wireless communication module is arranged on one side of the circuit board (200) facing away from the radome (110) and is electrically connected with the millimeter wave radar chip through the UART interface.

10. The living body detecting apparatus according to claim 1, wherein An explosion-proof hole (123) is arranged on the bottom shell (120) and communicates the inner side and the outer side.

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