In-vehicle child retention detection system

Abstract

The utility model discloses an in-vehicle child retention detection system which is characterized in that the system is provided with an ultra wide band (UWB) living body detection radar module, an MCU, a CPU, a wireless communication module and a remote terminal, the UWB living body detection radar module is connected with the MCU, the MCU is connected with the CPU, the CPU is connected with the wireless communication module, and the wireless communication module is connected with the remote terminal in a wireless mode; and a whole vehicle power supply system and a power supply module are further arranged, the whole vehicle power supply system supplies power to the power supply module, and the power supply module supplies power to the MCU and the UWB in-vivo detection radar module. The beneficial effects of the utility model are that the system can detect the child remaining in the vehicle, greatly reduces the cost, avoids the leakage of the privacy in the vehicle, reduces the detection dead zone, and improves the detection reliability.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaics, and in particular to a child retention detection system in a vehicle. Background Art

[0002] Children are often trapped in cars. The Child Presence Detection (CPD) function can detect the presence of children (including other living things) in the car and send an alarm to the vehicle user or third-party service operator. Currently, the market mainly uses camera image analysis or millimeter wave radar to achieve CPD, which is not only costly but also has the risk of leaking the privacy of the car when using cameras.

[0003] In addition, due to obstructions such as seats in the car, detection blind spots are likely to occur. At the same time, there is no redundant design for the detection circuit. Once the detection circuit fails, the child presence detection (CPD) function in the car will become ineffective and cannot be used. Utility Model Content

[0004] The utility model discloses a child retention detection system in a vehicle, which can detect the child retention in the vehicle, greatly reduce the cost and avoid the leakage of the privacy in the vehicle.

[0005] In order to achieve the above purpose, the technical solution of the child retention detection system in the car is as follows: an ultra-wideband liveness detection radar module UWB, an MCU, a CPU, a wireless communication module and a remote terminal are provided, the ultra-wideband liveness detection radar module UWB is connected to the MCU, the MCU is connected to the CPU, the CPU is connected to the wireless communication module, and the wireless communication module is connected to the remote terminal by wireless means;

[0006] A vehicle power supply system and a power module are also provided. The vehicle power supply system supplies power to the power module, and the power module supplies power to the MCU and the ultra-wideband living body detection radar module UWB.

[0007] Compared with camera image analysis or millimeter-wave radar, the use of ultra-wideband liveness detection radar for in-vehicle child retention detection is lower in cost and can avoid leaking privacy in the vehicle. It supports detection of people as well as cats and dogs; and it is more adaptable to long-term uninterrupted detection. When the ultra-wideband liveness detection radar module UWB detects that a child is retained in the vehicle, it transmits the data to the MCU, which transmits the data to the CPU. The CPU reminds the remote terminal through the wireless communication module, and the reminder methods include but are not limited to phone calls, text messages, WeChat and APP.

[0008] The ultra-wideband living body detection radar module UWB is UWB1, which is integrated in the vehicle ceiling light. The communication method between UWB1 and MCU includes but is not limited to SPI / UART / I2C, and the communication method between MCU and CPU includes but is not limited to LIN / CAN / Ethernet bus.

[0009] UWB1 is integrated into the vehicle ceiling light and can support liveness detection in all three rows of seats in the vehicle, as well as liveness detection in the footwells. Based on the actual and idle communication ports owned by UWB1, MCU and CPU, the communication method can be freely selected to meet actual application needs.

[0010] The ultra-wideband living body detection radar module UWB is UWB2, which is integrated in the vehicle rear reading light. The communication method between UWB2 and MCU includes but is not limited to SPI / UART / I2C, and the communication method between MCU and CPU includes but is not limited to LIN / CAN / Ethernet bus.

[0011] UWB2 is integrated in the vehicle's rear reading lights, and can support liveness detection in each rear seat in the vehicle, as well as liveness detection in the footwell. Based on the actual and idle communication ports owned by UWB2, MCU and CPU, the communication method can be freely selected to meet actual application needs.

[0012] The UWB1 and UWB2 are both provided with a UART communication terminal group, the MCU is provided with a UART1 communication terminal group, a UART2 communication terminal group and a UART3 communication terminal group, the UART communication terminal group of UWB1 is connected to the UART1 communication terminal group of the MCU, and the UART communication terminal group of UWB2 is connected to the UART2 communication terminal group of the MCU;

[0013] The CPU is provided with a CAN terminal group, and a communication conversion module is also provided between the CPU and the MCU. The communication conversion module is provided with a UART terminal group and a CAN terminal group. The UART3 communication terminal group of the MCU is connected to the UART terminal group of the communication conversion module, and the CAN terminal group of the communication conversion module is connected to the CAN terminal group of the CPU.

[0014] UWB1 is integrated into the vehicle ceiling light, while UWB2 is integrated into the vehicle rear reading light, which can not only avoid detection blind spots in the vehicle, but also perform sensor redundancy design. When one of the ultra-wideband liveness detection radars fails, children in the vehicle can still be retained for detection. The MCU includes multiple UART terminal groups, and the CPU in the automotive field is generally CAN communication. The above design ensures data transmission and coordinated control among UWB1, UWB2, MCU and CPU.

[0015] The MCU is provided with a port BLUE1_CTR, a port RED1_CTR, a port GREEN1_CTR, a port BLUE2_CTR, a port RED2_CTR, and a port GREEN2_CTR;

[0016] After the port BLUE1_CTR is connected to the first LED driving circuit, the diode BLUE1 is driven;

[0017] After the port RED1_CTR is connected to the second LED driving circuit, the diode RED1 is driven;

[0018] After the port GREEN1_CTR is connected to the third LED driving circuit, the diode GREEN1 is driven;

[0019] After the port BLUE2_CTR is connected to the fourth LED driving circuit, the diode BLUE2 is driven;

[0020] After the port RED2_CTR is connected to the fifth LED driving circuit, the diode RED2 is driven;

[0021] After the port GREEN2_CTR is connected to the sixth LED driving circuit, the diode GREEN3 is driven.

[0022] The diode BLUE1, the diode RED1, the diode GREEN1, the diode BLUE2, the diode RED2 and the diode GREEN2 can be freely controlled through the MCU to realize the free control of two groups of RGB lights.

[0023] The first LED driving circuit includes a capacitor C1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a transistor Q1, a transistor Q2 and a transistor Q3;

[0024] The positive electrode of the power supply VS is connected to the emitter of the transistor Q1 and the front end of the resistor R4, the rear end of the resistor R4 is connected to the base of the transistor Q1 and the emitter of the transistor Q2, the collector of the transistor Q1 is connected to the base of the transistor Q2 and the front end of the resistor R3, and the collector of the transistor Q2 is connected to the front end of the resistor R5;

[0025] The rear end of the resistor R5 is connected to the positive electrode of the diode BLUE1, the negative electrode of the diode BLUE1 is grounded, and the positive electrode of the diode BLUE1 is connected in series with the capacitor C3 and then grounded;

[0026] The rear end of the resistor R3 is connected to the collector of the transistor Q3, the emitter of the transistor Q3 is grounded, the port BLUE1_CTR is connected in series with the resistor R1 and the resistor R2 and then grounded, the common end of the resistor R1 and the resistor R2 is connected to the base of the transistor Q3, the port BLUE1_CTR is connected in series with the capacitor C1 and then grounded, and the base of the transistor Q3 is connected in series with the capacitor C2 and then grounded.

[0027] Through the cooperation of transistors Q1-Q3 and resistors R1-R5, only a very small driving current needs to be input to realize the driving function, ensuring that the MCU can achieve the output of more ports. At the same time, through the filtering and buffering of capacitors C1-C3, the current impact is reduced, achieving a longer life and better display effect.

[0028] The MCU is provided with port RED1_V+_ADC and port RED2_V+_ADC;

[0029] The port RED1_V+_ADC is connected to the front end of the resistor R6, the rear end of the resistor R6 is connected to the positive electrode of the diode RED1, the negative electrode of the diode RED1 is grounded, the port RED1_V+_ADC is connected in series with the capacitor C4 and then grounded, and the positive electrode of the diode RED1 is connected in series with the capacitor C5 and then grounded;

[0030] The port RED2_V+_ADC is connected to the front end of the resistor R7, the rear end of the resistor R7 is connected to the anode of the diode RED2, the cathode of the diode RED2 is grounded, the port RED2_V+_ADC is connected in series with the capacitor C6 and then grounded, and the anode of the diode RED2 is connected in series with the capacitor C7 and then grounded.

[0031] The function of lighting up the red light alone can be realized through port RED1_V+_ADC and port RED2_V+_ADC, which can be applied to scenes such as alarm. At the same time, the red light can be shared with the RGB light, which not only saves costs but also saves installation space in the car.

[0032] The MCU is provided with a port ReadLight_R_CTR and a port ReadLight_L_CTR; the child presence detection system in the vehicle is provided with a port ReadLight_R_EN and a port ReadLight_L_EN;

[0033] The positive electrode of the power supply VS is connected to the front end of the resistor R11 and the resistor R12, the rear ends of the resistor R11 and the resistor R12 are connected to the positive electrode of the diode LED11 and the front end of the capacitor C11, the negative electrode of the diode LED11 and the rear end of the capacitor C11 are connected to the front end of the resistor R13, the rear end of the resistor R13 is connected to the OUT end of the chip U11, and the rear end of the resistor R13 is connected in series with the capacitor C12 and then grounded;

[0034] The EN terminal of the chip U11 is connected to the rear end of the resistor R14, and the front end of the resistor R14 is connected to the port ReadLight_R_CTR;

[0035] The GND terminal and PE terminal of the chip U11 are grounded, the ISET terminal of the chip U11 is connected in series with a capacitor C13 and then grounded, a resistor R15 is connected in parallel across the capacitor C13, and a resistor R16 is connected in parallel across the capacitor C13;

[0036] The rear end of the resistor R13 is also connected to the OUT end of the chip U12. The GND end and the PE end of the chip U12 are grounded. The ISET end of the chip U12 is connected in series with the capacitor C14 and then grounded. The two ends of the capacitor C14 are connected in parallel with the resistor R17. The two ends of the capacitor C13 are connected in parallel with the resistor R18. The EN end of the chip U12 is connected to the port ReadLight_R_EN.

[0037] The positive electrode of the power supply VS is connected to the front end of the resistor R21 and the resistor R22, the rear end of the resistor R21 and the resistor R22 is connected to the positive electrode of the diode LED21 and the front end of the capacitor C21, the negative electrode of the diode LED21 and the rear end of the capacitor C21 are connected to the OUT end of the chip U21, and the rear end of the resistor R23 is connected in series with the capacitor C22 and then grounded;

[0038] The EN terminal of the chip U21 is connected to the rear end of the resistor R24, the front end of the resistor R24 ​​is connected to the rear end of the resistor R23, and the front end of the resistor R23 is connected to the port ReadLight_L_CTR;

[0039] The GND terminal and PE terminal of the chip U21 are grounded, the ISET terminal of the chip U21 is connected in series with a capacitor C23 and then grounded, a resistor R25 is connected in parallel across the capacitor C23, and a resistor R26 is connected in parallel across the capacitor C23;

[0040] The rear end of resistor R23 is also connected to the OUT end of chip U22. The GND and PE ends of chip U22 are grounded. The ISET end of chip U22 is connected in series with capacitor C24 and then grounded. Resistor R27 is connected in parallel across capacitor C24. Resistor R28 is connected in parallel across capacitor C23. The EN end of chip U22 is connected to port ReadLight_L_EN.

[0041] By controlling the ports EN of chip U11, chip U12, chip U21, and chip U22, the port OUT is grounded, and then the diodes LED11 and LED22 are turned on to realize the control function of the reading light. At the same time, chip U11 and chip U12 can independently control LED11, and chip U21 and chip U22 can independently control LED21.

[0042] The MCU is provided with a port BCALL_Indcator and a port DOOR_CTR_Indcator;

[0043] The positive electrode of the power supply VS is connected to the emitter of the transistor Q31 and the front end of the resistor R31, the rear end of the resistor R31 is connected to the base of the transistor Q31 and the front end of the resistor R33, the collector of the transistor Q31 is connected to the front end of the resistor R32, the rear end of the resistor R32 is connected to the positive electrode of the diode LED31, the negative electrode of the diode LED31 is grounded, and the positive electrode of the diode BCALL_LED is connected in series with the capacitor C31 and then grounded;

[0044] The rear end of the resistor R33 is connected to the collector of the transistor Q32, the emitter of the transistor Q32 is grounded, the port BCALL_Indcator is connected in series with the resistor R34 and the resistor R35 and then grounded, the common end of the resistor R34 and the resistor R35 is connected to the base of the transistor Q32, the base of the transistor Q32 is connected in series with the capacitor C32 and then grounded, and the port BCALL_Indcator is connected in series with the capacitor C33 and then grounded;

[0045] The positive electrode of the power supply VS is connected to the emitter of the transistor Q41 and the front end of the resistor R41, the rear end of the resistor R41 is connected to the base of the transistor Q41 and the front end of the resistor R43, the collector of the transistor Q41 is connected to the front end of the resistor R42, the rear end of the resistor R42 is connected to the positive electrode of the diode LED41, the negative electrode of the diode LED41 is grounded, and the positive electrode of the diode BCALL_LED is connected in series with the capacitor C31 and then grounded;

[0046] The rear end of the resistor R43 is connected to the collector of the transistor Q42, the emitter of the transistor Q42 is grounded, the port DOOR_CTR_Indcator is connected in series with the resistor R44 and the resistor R45 and then grounded, the common end of the resistor R44 and the resistor R45 is connected to the base of the transistor Q42, the base of the transistor Q42 is connected in series with the capacitor C42 and then grounded;

[0047] The child retention detection system in the vehicle is further provided with a terminal group main_connector, and the terminal group main_connector is provided with a port PassengerAirbag_power, a port PassengerAirbag_ON and a port PassengerAirbag_OFF;

[0048] The port PassengerAirbag_power is connected to the front end of the resistor R51, the rear end of the resistor R51 is connected to the front end of the resistor R52, the rear end of the resistor R52 is connected to the front end of the resistor R53, the rear end of the resistor R53 is connected to the front end of the resistor R54 and the front end of the resistor R55, the rear end of the resistor R54 is connected to the front end of the resistor R56, the rear end of the resistor R56 is connected to the anode of the diode VD51, the cathode of the diode VD51 is connected to PassengerAirbag_ON, the rear end of the resistor R55 is connected to the front end of the resistor R57, the rear end of the resistor R57 is connected to the anode of the diode VD52, and the cathode of the diode VD52 is connected to PassengerAirbag_OFF;

[0049] The port PassengerAirbag_power is connected in series with capacitor C55 and then grounded, the front end of resistor R52 is connected to the positive electrode of diode LED51 and the front end of capacitor C51, and the rear end of resistor R52 is connected to the negative electrode of diode LED52 and the rear end of capacitor C51;

[0050] The front end of the resistor R53 is connected to the positive electrode of the diode LED52 and the front end of the capacitor C52, and the rear end of the resistor R53 is connected to the negative electrode of the diode LED52 and the rear end of the capacitor C52;

[0051] The front end of the resistor R56 is connected to the positive electrode of the diode LED53 and the front end of the capacitor C53, and the rear end of the resistor R56 is connected to the negative electrode of the diode LED53 and the rear end of the capacitor C53;

[0052] The front end of the resistor R57 is connected to the anode of the diode LED54 and the front end of the capacitor C54, and the rear end of the resistor R57 is connected to the cathode of the diode LED54 and the rear end of the capacitor C54.

[0053] The emergency call BCALL can be indicated by the diode LED31, the door control can be indicated by the diode LED41, the airbag status can be indicated by the diode LED51 and the diode LED52, the airbag opening can be indicated by the diode LED53, and the airbag closing can be indicated by the diode LED54.

[0054] The MCU is provided with a port DOOR_CTR_Indicator_W and a port ILL_PWM, and the terminal group main_connector is provided with a port illuminate_power;

[0055] The port illuminate_power is connected to the positive electrode of the diode VD601, the negative electrode of the diode VD601 is connected to the front end of the resistor R601, the rear end of the resistor R601 is grounded, the negative electrode of the diode VD601 is connected to the port LL_power, the port illuminate_power is connected to the ground via a capacitor C601, and the port LL_power is connected to the ground via a capacitor C602;

[0056] The port LL_power is connected to the front end of the resistor R62, the rear end of the resistor R62 is connected to the anode of the diode LED61, the cathode of the diode LED61 is connected to the anode of the diode LED62, the cathode of the diode LED62 is grounded, the two ends of the diode LED61 are connected in parallel with the capacitor C61, and the two ends of the diode LED62 are connected in parallel with the capacitor C62;

[0057] The port LL_power is connected to the front end of the resistor R63, the rear end of the resistor R63 is connected to the anode of the diode LED63, the cathode of the diode LED63 is connected to the anode of the diode LED64, the cathode of the diode LED64 is grounded, the two ends of the diode LED63 are connected in parallel with the capacitor C63, and the two ends of the diode LED64 are connected in parallel with the capacitor C64;

[0058] The port LL_power is connected to the front end of the resistor R64, the rear end of the resistor R64 is connected to the anode of the diode LED65, the cathode of the diode LED65 is connected to the anode of the diode LED66, the cathode of the diode LED66 is grounded, the two ends of the diode LED65 are connected in parallel with the capacitor C65, and the two ends of the diode LED66 are connected in parallel with the capacitor C66;

[0059] The port LL_power is connected to the front end of the resistor R65, the rear end of the resistor R65 is connected to the anode of the diode LED67, the cathode of the diode LED67 is connected to the anode of the diode LED68, the cathode of the diode LED68 is grounded, the two ends of the diode LED67 are connected in parallel with the capacitor C67, and the two ends of the diode LED68 are connected in parallel with the capacitor C68;

[0060] The port LL_power is connected to the front end of the resistor R66, the rear end of the resistor R66 is connected to the positive electrode of the diode LED69, the negative electrode of the diode LED69 is grounded, the two ends of the diode LED69 are connected in parallel with the capacitor C69, and the port LL_power is connected in series with the capacitor C603 and then grounded;

[0061] The port LL_power is connected to the front end of the resistor R71, the rear end of the resistor R71 is connected to the anode of the diode LED71, and the cathode of the diode LED71 is grounded. The port ILL_PWM is connected to the front end of the resistor R72, the rear end of the resistor R72 is connected to the anode of the diode LED71, the anode of the diode LED71 is connected to the collector of the transistor Q71, and the emitter of the transistor Q71 is grounded. The port BCALL_Indcator is connected in series with the resistor R73 and the resistor R74 and then grounded, and the common end of the resistor R73 and the resistor R74 is connected to the base of the transistor Q71.

[0062] The port LL_power is connected to a capacitor C71 and then to ground. The port ILL_PWM is connected to a capacitor C72 and then to ground. The port BCALL_Indcator is connected to a capacitor C73 and then to ground. A capacitor C74 is connected in parallel at both ends of the diode LED71.

[0063] The port LL_power is connected to the front end of the resistor R75, the rear end of the resistor R75 is connected to the anode of the diode LED72, the cathode of the diode LED72 is grounded, the anode of the diode LED72 is connected to the collector of the transistor Q72, the emitter of the transistor Q72 is grounded, the port DOOR_CTR_Indicator_W is connected in series with the resistor R76 and the resistor R77 and then grounded, and the common end of the resistor R76 and the resistor R77 is connected to the base of the transistor Q72;

[0064] The port LL_power is connected in series with a capacitor C75 and then grounded. The port DOOR_CTR_Indicator_W is connected in series with a capacitor C76 and then grounded. A capacitor C77 is connected in parallel across the diode LED72.

[0065] Diode LED62-diode LED68 are background lights, diode LED69 is a 12V power indicator light, diode LED71 can be controlled through port BCALL_Indcator and port ILL_PWM, and diode LED72 can be controlled through port DOOR_CTR_Indicator_W.

[0066] The MCU is provided with a port B_CALL, a port DOOR_CTR, a port ReadTouch_LH, and a port ReadTouch_RH, and the child retention detection system in the vehicle is provided with a touch switch B_CALL_TOUCH, a touch switch DOOR_TOUCH, a touch switch Touch_LH, and a touch switch Touch_RH;

[0067] Port B_CALL is connected to the rear end of resistor R81, and the front end of resistor R81 is connected to touch switch B_CALL_TOUCH. Port DOOR_CTR is connected to the rear end of resistor R82, and the front end of resistor R82 is connected to touch switch DOOR_TOUCH. Port ReadTouch_LH is connected to the rear end of resistor R83, and the front end of resistor R83 is connected to touch switch Touch_LH. Port ReadTouch_RH is connected to the rear end of resistor R84, and the front end of resistor R84 is connected to touch switch Touch_RH.

[0068] The MCU is provided with a port B-Call_Switch_CTR, a port Door_Signal_ADC, a port door_signal_mcu and a port LIN_BUS_MCU, and the terminal group main_connector is provided with a port Door_Signal_Input, a port Door_Signal_Output, a port 12V_Power_Switch, a port LIN_BUS and a port B-Call_Switch;

[0069] The port Door_Signal_Input is connected to the front end of the resistor R111, the rear end of the resistor R111 is connected to the front ends of the resistor R114 and the resistor R112, the rear end of the resistor R114 is grounded, the rear end of the resistor R112 is connected to the port Door_Signal_ADC, the port Door_Signal_Input is connected to the ground after the capacitor C111 is connected in series with the port Door_Signal_Input, the port Door_Signal_Input is connected to the ground after the capacitor C113 is connected in series with the port Door_Signal_Input, the capacitor C112 is connected in parallel at both ends of the resistor R114, the positive pole of the power supply VS is connected to the front end of the resistor R113, the rear end of the resistor R113 is connected to the positive pole of the diode VD111, the negative pole of the diode VD111 is connected to the port Door_Signal_Input, the front end of the resistor R114 is connected to the negative pole of the diode VD112, and the positive pole of the diode VD112 is grounded;

[0070] Port door_signal_mcu connected to port Door_Signal_Output;

[0071] Port B-Call_Switch_CTR is connected to the front end of resistor R121, the rear end of resistor R121 is connected to the front end of resistor R122, the rear end of resistor R122 is grounded, the common end of resistor R121 and resistor R122 is connected to the base of transistor Q121, the emitter of transistor Q121 is grounded, the collector of transistor Q121 is connected to the front end of resistor R123 and the front end of resistor R124, the rear end of resistor R124 is grounded, the rear end of resistor R123 is connected to the front end of resistor R125, the rear end of resistor R125 is connected to port B-Call_Switch, port B-Call_Switch_CTR is connected to ground after capacitor C121 is connected in series, and port B-Call_Switch is connected to ground after capacitor C122 is connected in series;

[0072] The port 12V_Power_Switch is connected to the front end of the resistor R131, the resistor R131 is connected to the front end of the self-locking switch K131, the rear end of the self-locking switch K131 is grounded, and the port 12V_Power_Switch is connected to the capacitor C131 in series and then grounded;

[0073] The port LIN_BUS_MCU is connected to the front end of the resistor R141, the rear end of the resistor R141 is connected to the port LIN_BUS, the port LIN_BUS_MCU is connected to the capacitor C141 in series and then grounded, the port LIN_BUS is connected to the cathode of the diode VD141, the anode of the diode VD141 is connected to the anode of the diode VD142, and the cathode of the diode VD142 is grounded;

[0074] The MCU is provided with a port POWER_ADC and a port VS_MCU, and the terminal group main_connector is provided with a port POWER;

[0075] The port POWER is connected to the front end of the capacitor C151, the rear end of the capacitor C151 is connected to the front end of the capacitor C152, and the rear end of the capacitor C152 is grounded; the port POWER is connected to the positive electrode of the diode VD151, the negative electrode of the diode VD151 is connected to the negative electrode of the diode VD152, and the positive electrode of the diode VD152 is grounded; the port POWER is connected to the positive electrode of the diode VD153, the negative electrode of the diode VD153 is connected to the front end of the resistor R151 and the front end of the resistor R152, the rear end of the resistor R152 is grounded, and the positive electrode of the diode VD153 is connected to the positive electrode of the diode VD153. The rear end of resistor R151 is connected to port VS_MCU, the cathode of diode VD153 is connected to the positive electrode of power supply VS, the cathode of diode VD153 is connected to the positive electrode of capacitor C153, the cathode of capacitor C153 is grounded, the cathode of diode VD153 is connected to the front end of capacitor C154, the rear end of capacitor C154 is grounded, the cathode of diode VD153 is connected to the front end of capacitor C155, the rear end of capacitor C155 is grounded, port VS_MCU is connected in series with capacitor C156 and then grounded, and port VS_MCU is connected in series with capacitor C157 and then grounded;

[0076] Port VS_MCU is connected to the front end of resistor R161, the rear end of resistor R161 is connected to the front end of resistor R162, the rear end of resistor R162 is grounded, the common end of resistor R161 and resistor R162 is connected to the front end of resistor R163, the rear end of resistor R163 is connected to port POWER_ADC, port POWER_ADC is connected to ground after capacitor C161 is connected in series, and capacitor C162 is connected in parallel at both ends of resistor R162.

[0077] The signals of the touch switch B_CALL_TOUCH, the touch switch DOOR_TOUCH, the touch switch Touch_LH and the touch switch Touch_RH are collected through the MCU. At the same time, the MCU collects the door signal through the port Door_Signal_ADC and detects the power supply voltage of the MCU through the port POWER_ADC.

[0078] The benefits of the utility model: it can detect the presence of children in the car, greatly reduce costs, avoid leaking the privacy of the car, reduce the detection blind area and enhance the detection reliability; it also has the functions of controlling the ceiling light, reading light, background light and indicator light. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] Figure 1 It is the overall structure diagram;

[0080] Figure 2 This is the UWB interface diagram;

[0081] Figure 3 This is the MCU communication interface diagram;

[0082] Figure 4 It is a CAN communication circuit;

[0083] Figure 5 This is the MCU pin diagram;

[0084] Figure 6 For LIN communication circuit

[0085] Figure 7 This is the POWER circuit diagram;

[0086] Figure 8 This is the interface diagram of the end group main_connector;

[0087] Fig. 9 This is the 12V_Power_Swich circuit diagram;

[0088] Fig.10 The circuit diagram of POWER_ADC and Door_Signal_ADC;

[0089] Fig.11 It is the circuit diagram of Readlight;

[0090] Fig.12 It is the RGB circuit diagram;

[0091] Fig.13 It is the circuit diagram of BCALL indicator;

[0092] Fig.14 The circuit diagram for DOOR_CTR is indicated;

[0093] Fig.15 It is the circuit diagram of the airbag indicator;

[0094] Fig.16 This is the touch switch circuit diagram;

[0095] Fig.17 This is the Bcaklight circuit diagram;

[0096] Fig.18 This is the circuit diagram of Short_White_LED;

[0097] Fig.19 This is the circuit diagram of B-Call_Switch_CTR. DETAILED DESCRIPTION

[0098] The utility model is further described below in conjunction with embodiments and drawings.

[0099] Embodiment 1

[0100] A child retention detection system in a vehicle is provided with an ultra-wideband liveness detection radar module UWB, an MCU, a CPU, a wireless communication module and a remote terminal, wherein the ultra-wideband liveness detection radar module UWB is connected to the MCU, the MCU is connected to the CPU, the CPU is connected to the wireless communication module, and the wireless communication module is connected to the remote terminal in a wireless manner;

[0101] A vehicle power supply system and a power module are also provided. The vehicle power supply system supplies power to the power module, and the power module supplies power to the MCU and the ultra-wideband living body detection radar module UWB.

[0102] The ultra-wideband living body detection radar module UWB is UWB1, which is integrated in the vehicle ceiling light. The communication method between UWB1 and MCU includes but is not limited to SPI / UART / I2C, and the communication method between MCU and CPU includes but is not limited to LIN / CAN / Ethernet bus.

[0103] Embodiment 2

[0104] The structure of the second embodiment is consistent with that of the first embodiment, except that:

[0105] The ultra-wideband living body detection radar module UWB is UWB2, which is integrated in the vehicle rear reading light. The communication method between UWB2 and MCU includes but is not limited to SPI / UART / I2C, and the communication method between MCU and CPU includes but is not limited to LIN / CAN / Ethernet bus.

[0106] Embodiment 3 is a combination of Embodiments 1 and 2:

[0107] like Figure 1 As shown, the liveness detection radar module UWB includes UWB1 and UWB2. UWB1 is integrated in the vehicle ceiling light, and UWB2 is integrated in the vehicle rear reading light.

[0108] The communication methods between UWB1 and MCU include but are not limited to SPI / UART / I2C, the communication methods between UWB2 and MCU include but are not limited to SPI / UART / I2C, the communication methods between MCU and CPU include but are not limited to LIN / CAN / Ethernet bus; the vehicle power supply system is connected to the power module, and the power module supplies power to MCU, UWB1 and UWB2.

[0109] The same technical solutions of embodiments 1, 2 and 3 also include the following description:

[0110] like Figure 2 , Figure 3 and Figure 4As shown, UWB1 and UWB2 are both provided with a UART communication terminal group, and the MCU is provided with a UART1 communication terminal group, a UART2 communication terminal group, and a UART3 communication terminal group. The UART communication terminal group of UWB1 is connected to the UART1 communication terminal group of the MCU, and the UART communication terminal group of UWB2 is connected to the UART2 communication terminal group of the MCU.

[0111] The CPU is provided with a CAN terminal group, and a communication conversion module is also provided between the CPU and the MCU. The communication conversion module is provided with a UART terminal group and a CAN terminal group. The UART3 communication terminal group of the MCU is connected to the UART terminal group of the communication conversion module, and the CAN terminal group of the communication conversion module is connected to the CAN terminal group of the CPU.

[0112] like Figure 5 , Figure 8 and Figure 6 As shown, the MCU is provided with a port LIN_BUS_MCU, and the child retention detection system in the vehicle is also provided with a terminal group main_connector, and the terminal group main_connector is provided with a port LIN_BUS, the port LIN_BUS_MCU is connected to the front end of the resistor R141, and the rear end of the resistor R141 is connected to the port LIN_BUS, the port LIN_BUS_MCU is connected to the ground after being connected in series with the capacitor C141, the port LIN_BUS is connected to the cathode of the diode VD141, the anode of the diode VD141 is connected to the anode of the diode VD142, and the cathode of the diode VD142 is grounded.

[0113] like Figure 5 , Figure 8 , Figure 7 and Fig.10 As shown, the MCU is provided with a port POWER_ADC and a port VS_MCU, and the terminal group main_connector is provided with a port POWER;

[0114] The port POWER is connected to the front end of the capacitor C151, the rear end of the capacitor C151 is connected to the front end of the capacitor C152, and the rear end of the capacitor C152 is grounded; the port POWER is connected to the positive electrode of the diode VD151, the negative electrode of the diode VD151 is connected to the negative electrode of the diode VD152, and the positive electrode of the diode VD152 is grounded; the port POWER is connected to the positive electrode of the diode VD153, the negative electrode of the diode VD153 is connected to the front end of the resistor R151 and the front end of the resistor R152, the rear end of the resistor R152 is grounded, and the positive electrode of the diode VD153 is connected to the positive electrode of the diode VD153. The rear end of resistor R151 is connected to port VS_MCU, the cathode of diode VD153 is connected to the positive electrode of power supply VS, the cathode of diode VD153 is connected to the positive electrode of capacitor C153, the cathode of capacitor C153 is grounded, the cathode of diode VD153 is connected to the front end of capacitor C154, the rear end of capacitor C154 is grounded, the cathode of diode VD153 is connected to the front end of capacitor C155, the rear end of capacitor C155 is grounded, port VS_MCU is connected in series with capacitor C156 and then grounded, and port VS_MCU is connected in series with capacitor C157 and then grounded;

[0115] The port VS_MCU is connected to the front end of the resistor R161, the rear end of the resistor R161 is connected to the front end of the resistor R162, the rear end of the resistor R162 is grounded, the common end of the resistor R161 and the resistor R162 is connected to the front end of the resistor R163, the rear end of the resistor R163 is connected to the port POWER_ADC, the port POWER_ADC is connected to the ground after the capacitor C161 is connected in series, and the capacitor C162 is connected in parallel at both ends of the resistor R162;

[0116] The MCU is provided with a port Door_Signal_ADC, a port door_signal_mcu, and the port end group main_connector is provided with a port Door_Signal_Input, a port Door_Signal_Output;

[0117] The port Door_Signal_Input is connected to the front end of the resistor R111, the rear end of the resistor R111 is connected to the front ends of the resistor R114 and the resistor R112, the rear end of the resistor R114 is grounded, the rear end of the resistor R112 is connected to the port Door_Signal_ADC, the port Door_Signal_Input is connected to the ground after the capacitor C111 is connected in series with the port Door_Signal_Input, the port Door_Signal_Input is connected to the ground after the capacitor C113 is connected in series with the port Door_Signal_Input, the capacitor C112 is connected in parallel at both ends of the resistor R114, the positive pole of the power supply VS is connected to the front end of the resistor R113, the rear end of the resistor R113 is connected to the positive pole of the diode VD111, the negative pole of the diode VD111 is connected to the port Door_Signal_Input, the front end of the resistor R114 is connected to the negative pole of the diode VD112, and the positive pole of the diode VD112 is grounded;

[0118] Port door_signal_mcu is connected to port Door_Signal_Output.

[0119] like Figure 8 and Fig. 9 As shown, the terminal group main_connector is provided with a port 12V_Power_Switch, the port 12V_Power_Switch is connected to the front end of the resistor R131, the resistor R131 is connected to the front end of the self-locking switch K131, the rear end of the self-locking switch K131 is grounded, and the port 12V_Power_Switch is connected to the ground after the capacitor C131 is connected in series.

[0120] like Figure 5 and Fig.11 As shown, the MCU is provided with a port ReadLight_R_CTR and a port ReadLight_L_CTR; the child presence detection system in the vehicle is provided with a port ReadLight_R_EN and a port ReadLight_L_EN;

[0121] The positive electrode of the power supply VS is connected to the front end of the resistor R11 and the resistor R12, the rear ends of the resistor R11 and the resistor R12 are connected to the positive electrode of the diode LED11 and the front end of the capacitor C11, the negative electrode of the diode LED11 and the rear end of the capacitor C11 are connected to the front end of the resistor R13, the rear end of the resistor R13 is connected to the OUT end of the chip U11, and the rear end of the resistor R13 is connected in series with the capacitor C12 and then grounded;

[0122] The EN terminal of the chip U11 is connected to the rear end of the resistor R14, and the front end of the resistor R14 is connected to the port ReadLight_R_CTR;

[0123] The GND terminal and PE terminal of the chip U11 are grounded, the ISET terminal of the chip U11 is connected in series with a capacitor C13 and then grounded, a resistor R15 is connected in parallel across the capacitor C13, and a resistor R16 is connected in parallel across the capacitor C13;

[0124] The rear end of the resistor R13 is also connected to the OUT end of the chip U12. The GND end and the PE end of the chip U12 are grounded. The ISET end of the chip U12 is connected in series with the capacitor C14 and then grounded. The two ends of the capacitor C14 are connected in parallel with the resistor R17. The two ends of the capacitor C13 are connected in parallel with the resistor R18. The EN end of the chip U12 is connected to the port ReadLight_R_EN.

[0125] The positive electrode of the power supply VS is connected to the front end of the resistor R21 and the resistor R22, the rear end of the resistor R21 and the resistor R22 is connected to the positive electrode of the diode LED21 and the front end of the capacitor C21, the negative electrode of the diode LED21 and the rear end of the capacitor C21 are connected to the OUT end of the chip U21, and the rear end of the resistor R23 is connected in series with the capacitor C22 and then grounded;

[0126] The EN terminal of the chip U21 is connected to the rear end of the resistor R24, the front end of the resistor R24 ​​is connected to the rear end of the resistor R23, and the front end of the resistor R23 is connected to the port ReadLight_L_CTR;

[0127] The GND terminal and PE terminal of the chip U21 are grounded, the ISET terminal of the chip U21 is connected in series with a capacitor C23 and then grounded, a resistor R25 is connected in parallel across the capacitor C23, and a resistor R26 is connected in parallel across the capacitor C23;

[0128] The rear end of resistor R23 is also connected to the OUT end of chip U22. The GND and PE ends of chip U22 are grounded. The ISET end of chip U22 is connected in series with capacitor C24 and then grounded. Resistor R27 is connected in parallel across capacitor C24. Resistor R28 is connected in parallel across capacitor C23. The EN end of chip U22 is connected to port ReadLight_L_EN.

[0129] like Figure 5 and Fig.12 As shown, the MCU is provided with a port BLUE1_CTR, a port RED1_CTR, a port GREEN1_CTR, a port BLUE2_CTR, a port RED2_CTR, and a port GREEN2_CTR;

[0130] After the port BLUE1_CTR is connected to the first LED driving circuit, the diode BLUE1 is driven;

[0131] After the port RED1_CTR is connected to the second LED driving circuit, the diode RED1 is driven;

[0132] After the port GREEN1_CTR is connected to the third LED driving circuit, the diode GREEN1 is driven;

[0133] After the port BLUE2_CTR is connected to the fourth LED driving circuit, the diode BLUE2 is driven;

[0134] After the port RED2_CTR is connected to the fifth LED driving circuit, the diode RED2 is driven;

[0135] After the port GREEN2_CTR is connected to the sixth LED driving circuit, the diode GREEN3 is driven.

[0136] The first LED driving circuit includes a capacitor C1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a transistor Q1, a transistor Q2 and a transistor Q3;

[0137] The positive electrode of the power supply VS is connected to the emitter of the transistor Q1 and the front end of the resistor R4, the rear end of the resistor R4 is connected to the base of the transistor Q1 and the emitter of the transistor Q2, the collector of the transistor Q1 is connected to the base of the transistor Q2 and the front end of the resistor R3, and the collector of the transistor Q2 is connected to the front end of the resistor R5;

[0138] The rear end of the resistor R5 is connected to the positive electrode of the diode BLUE1, the negative electrode of the diode BLUE1 is grounded, and the positive electrode of the diode BLUE1 is connected in series with the capacitor C3 and then grounded;

[0139] The rear end of the resistor R3 is connected to the collector of the transistor Q3, the emitter of the transistor Q3 is grounded, the port BLUE1_CTR is connected in series with the resistor R1 and the resistor R2 and then grounded, the common end of the resistor R1 and the resistor R2 is connected to the base of the transistor Q3, the port BLUE1_CTR is connected in series with the capacitor C1 and then grounded, and the base of the transistor Q3 is connected in series with the capacitor C2 and then grounded.

[0140] The working principles of the second LED driving circuit to the sixth LED driving circuit are consistent with that of the first LED driving circuit.

[0141] The MCU is provided with port RED1_V+_ADC and port RED2_V+_ADC;

[0142] The port RED1_V+_ADC is connected to the front end of the resistor R6, the rear end of the resistor R6 is connected to the positive electrode of the diode RED1, the negative electrode of the diode RED1 is grounded, the port RED1_V+_ADC is connected in series with the capacitor C4 and then grounded, and the positive electrode of the diode RED1 is connected in series with the capacitor C5 and then grounded;

[0143] The port RED2_V+_ADC is connected to the front end of the resistor R7, the rear end of the resistor R7 is connected to the anode of the diode RED2, the cathode of the diode RED2 is grounded, the port RED2_V+_ADC is connected in series with the capacitor C6 and then grounded, and the anode of the diode RED2 is connected in series with the capacitor C7 and then grounded.

[0144] like Figure 5 , Fig.13 and Fig.14 As shown, the MCU is provided with a port BCALL_Indcator and a port DOOR_CTR_Indcator;

[0145] The positive electrode of the power supply VS is connected to the emitter of the transistor Q31 and the front end of the resistor R31, the rear end of the resistor R31 is connected to the base of the transistor Q31 and the front end of the resistor R33, the collector of the transistor Q31 is connected to the front end of the resistor R32, the rear end of the resistor R32 is connected to the positive electrode of the diode LED31, the negative electrode of the diode LED31 is grounded, and the positive electrode of the diode BCALL_LED is connected in series with the capacitor C31 and then grounded;

[0146] The rear end of the resistor R33 is connected to the collector of the transistor Q32, the emitter of the transistor Q32 is grounded, the port BCALL_Indcator is connected in series with the resistor R34 and the resistor R35 and then grounded, the common end of the resistor R34 and the resistor R35 is connected to the base of the transistor Q32, the base of the transistor Q32 is connected in series with the capacitor C32 and then grounded, and the port BCALL_Indcator is connected in series with the capacitor C33 and then grounded;

[0147] The positive electrode of the power supply VS is connected to the emitter of the transistor Q41 and the front end of the resistor R41, the rear end of the resistor R41 is connected to the base of the transistor Q41 and the front end of the resistor R43, the collector of the transistor Q41 is connected to the front end of the resistor R42, the rear end of the resistor R42 is connected to the positive electrode of the diode LED41, the negative electrode of the diode LED41 is grounded, and the positive electrode of the diode BCALL_LED is connected in series with the capacitor C31 and then grounded;

[0148] The rear end of resistor R43 is connected to the collector of transistor Q42, the emitter of transistor Q42 is grounded, the port DOOR_CTR_Indcator is connected in series with resistors R44 and R45 and then grounded, the common end of resistors R44 and R45 is connected to the base of transistor Q42, and the base of transistor Q42 is connected in series with capacitor C42 and then grounded.

[0149] like Figure 8 and Fig.15 As shown, the terminal group main_connector is provided with a port PassengerAirbag_power, a port PassengerAirbag_ON and a port PassengerAirbag_OFF;

[0150] The port PassengerAirbag_power is connected to the front end of the resistor R51, the rear end of the resistor R51 is connected to the front end of the resistor R52, the rear end of the resistor R52 is connected to the front end of the resistor R53, the rear end of the resistor R53 is connected to the front end of the resistor R54 and the front end of the resistor R55, the rear end of the resistor R54 is connected to the front end of the resistor R56, the rear end of the resistor R56 is connected to the anode of the diode VD51, the cathode of the diode VD51 is connected to PassengerAirbag_ON, the rear end of the resistor R55 is connected to the front end of the resistor R57, the rear end of the resistor R57 is connected to the anode of the diode VD52, and the cathode of the diode VD52 is connected to PassengerAirbag_OFF;

[0151] The port PassengerAirbag_power is connected in series with capacitor C55 and then grounded, the front end of resistor R52 is connected to the positive electrode of diode LED51 and the front end of capacitor C51, and the rear end of resistor R52 is connected to the negative electrode of diode LED52 and the rear end of capacitor C51;

[0152] The front end of the resistor R53 is connected to the positive electrode of the diode LED52 and the front end of the capacitor C52, and the rear end of the resistor R53 is connected to the negative electrode of the diode LED52 and the rear end of the capacitor C52;

[0153] The front end of the resistor R56 is connected to the positive electrode of the diode LED53 and the front end of the capacitor C53, and the rear end of the resistor R56 is connected to the negative electrode of the diode LED53 and the rear end of the capacitor C53;

[0154] The front end of the resistor R57 is connected to the anode of the diode LED54 and the front end of the capacitor C54, and the rear end of the resistor R57 is connected to the cathode of the diode LED54 and the rear end of the capacitor C54.

[0155] like Figure 5 and Fig.16 As shown, the MCU is provided with a port B_CALL, a port DOOR_CTR, a port ReadTouch_LH, and a port ReadTouch_RH, and the child retention detection system in the vehicle is provided with a touch switch B_CALL_TOUCH, a touch switch DOOR_TOUCH, a touch switch Touch_LH, and a touch switch Touch_RH;

[0156] Port B_CALL is connected to the rear end of resistor R81, and the front end of resistor R81 is connected to the touch switch B_CALL_TOUCH. Port DOOR_CTR is connected to the rear end of resistor R82, and the front end of resistor R82 is connected to the touch switch DOOR_TOUCH. Port ReadTouch_LH is connected to the rear end of resistor R83, and the front end of resistor R83 is connected to the touch switch Touch_LH. Port ReadTouch_RH is connected to the rear end of resistor R84, and the front end of resistor R84 is connected to the touch switch Touch_RH.

[0157] like Figure 5 , Figure 8 , Fig.17 and Fig.18 As shown, the MCU is provided with a port DOOR_CTR_Indicator_W and a port ILL_PWM, and the terminal group main_connector is provided with a port illuminate_power;

[0158] The port illuminate_power is connected to the positive electrode of the diode VD601, the negative electrode of the diode VD601 is connected to the front end of the resistor R601, the rear end of the resistor R601 is grounded, the negative electrode of the diode VD601 is connected to the port LL_power, the port illuminate_power is connected to the ground via a capacitor C601, and the port LL_power is connected to the ground via a capacitor C602;

[0159] The port LL_power is connected to the front end of the resistor R62, the rear end of the resistor R62 is connected to the anode of the diode LED61, the cathode of the diode LED61 is connected to the anode of the diode LED62, the cathode of the diode LED62 is grounded, the two ends of the diode LED61 are connected in parallel with the capacitor C61, and the two ends of the diode LED62 are connected in parallel with the capacitor C62;

[0160] The port LL_power is connected to the front end of the resistor R63, the rear end of the resistor R63 is connected to the anode of the diode LED63, the cathode of the diode LED63 is connected to the anode of the diode LED64, the cathode of the diode LED64 is grounded, the two ends of the diode LED63 are connected in parallel with the capacitor C63, and the two ends of the diode LED64 are connected in parallel with the capacitor C64;

[0161] The port LL_power is connected to the front end of the resistor R64, the rear end of the resistor R64 is connected to the anode of the diode LED65, the cathode of the diode LED65 is connected to the anode of the diode LED66, the cathode of the diode LED66 is grounded, the two ends of the diode LED65 are connected in parallel with the capacitor C65, and the two ends of the diode LED66 are connected in parallel with the capacitor C66;

[0162] The port LL_power is connected to the front end of the resistor R65, the rear end of the resistor R65 is connected to the anode of the diode LED67, the cathode of the diode LED67 is connected to the anode of the diode LED68, the cathode of the diode LED68 is grounded, the two ends of the diode LED67 are connected in parallel with the capacitor C67, and the two ends of the diode LED68 are connected in parallel with the capacitor C68;

[0163] The port LL_power is connected to the front end of the resistor R66, the rear end of the resistor R66 is connected to the positive electrode of the diode LED69, the negative electrode of the diode LED69 is grounded, the two ends of the diode LED69 are connected in parallel with the capacitor C69, and the port LL_power is connected in series with the capacitor C603 and then grounded;

[0164] The port LL_power is connected to the front end of the resistor R71, the rear end of the resistor R71 is connected to the anode of the diode LED71, and the cathode of the diode LED71 is grounded. The port ILL_PWM is connected to the front end of the resistor R72, the rear end of the resistor R72 is connected to the anode of the diode LED71, the anode of the diode LED71 is connected to the collector of the transistor Q71, and the emitter of the transistor Q71 is grounded. The port BCALL_Indcator is connected in series with the resistor R73 and the resistor R74 and then grounded, and the common end of the resistor R73 and the resistor R74 is connected to the base of the transistor Q71.

[0165] The port LL_power is connected to a capacitor C71 and then to ground. The port ILL_PWM is connected to a capacitor C72 and then to ground. The port BCALL_Indcator is connected to a capacitor C73 and then to ground. A capacitor C74 is connected in parallel at both ends of the diode LED71.

[0166] The port LL_power is connected to the front end of the resistor R75, the rear end of the resistor R75 is connected to the anode of the diode LED72, the cathode of the diode LED72 is grounded, the anode of the diode LED72 is connected to the collector of the transistor Q72, the emitter of the transistor Q72 is grounded, the port DOOR_CTR_Indicator_W is connected in series with the resistor R76 and the resistor R77 and then grounded, and the common end of the resistor R76 and the resistor R77 is connected to the base of the transistor Q72;

[0167] The port LL_power is connected in series with a capacitor C75 and then grounded. The port DOOR_CTR_Indicator_W is connected in series with a capacitor C76 and then grounded. A capacitor C77 is connected in parallel across the diode LED72.

[0168] like Figure 5 , Figure 8 and Fig.19 As shown, the MCU is provided with port B-Call_Switch_CTR and terminal group main_connector port B-Call_Switch;

[0169] Port B-Call_Switch_CTR is connected to the front end of resistor R121, the rear end of resistor R121 is connected to the front end of resistor R122, the rear end of resistor R122 is grounded, the common end of resistor R121 and resistor R122 is connected to the base of transistor Q121, the emitter of transistor Q121 is grounded, the collector of transistor Q121 is connected to the front end of resistor R123 and the front end of resistor R124, the rear end of resistor R124 is grounded, the rear end of resistor R123 is connected to the front end of resistor R125, the rear end of resistor R125 is connected to port B-Call_Switch, port B-Call_Switch_CTR is connected to ground after connecting capacitor C121, and port B-Call_Switch is connected to ground after connecting capacitor C122.

[0170] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make a variety of similar expressions without violating the purpose and claims of the present invention, and such changes fall within the scope of protection of the present invention.

Claims

1. A child retention detection system in a vehicle, characterized by: An ultra-wideband liveness detection radar module UWB, an MCU, a CPU, a wireless communication module and a remote terminal are provided, the ultra-wideband liveness detection radar module UWB is connected to the MCU, the MCU is connected to the CPU, the CPU is connected to the wireless communication module, and the wireless communication module is connected to the remote terminal in a wireless manner; A vehicle power supply system and a power module are also provided. The vehicle power supply system supplies power to the power module, and the power module supplies power to the MCU and the ultra-wideband liveness detection radar module UWB. The ultra-wideband living body detection radar module UWB is UWB1, which is integrated in the vehicle ceiling light. The communication method between UWB1 and MCU includes but is not limited to SPI / UART / I2C, and the communication method between MCU and CPU includes but is not limited to LIN / CAN / Ethernet bus. The ultra-wideband living body detection radar module UWB is UWB2, which is integrated in the vehicle rear reading light. The communication method between UWB2 and MCU includes but is not limited to SPI / UART / I2C, and the communication method between MCU and CPU includes but is not limited to LIN / CAN / Ethernet bus.

2. The child in-vehicle detection system according to claim 1, characterized in that: The UWB1 and UWB2 are both provided with a UART communication terminal group, the MCU is provided with a UART1 communication terminal group, a UART2 communication terminal group and a UART3 communication terminal group, the UART communication terminal group of UWB1 is connected to the UART1 communication terminal group of the MCU, and the UART communication terminal group of UWB2 is connected to the UART2 communication terminal group of the MCU; The CPU is provided with a CAN terminal group, and a communication conversion module is also provided between the CPU and the MCU. The communication conversion module is provided with a UART terminal group and a CAN terminal group. The UART3 communication terminal group of the MCU is connected to the UART terminal group of the communication conversion module, and the CAN terminal group of the communication conversion module is connected to the CAN terminal group of the CPU.

3. The child in-vehicle detection system according to claim 1, characterized in that: The MCU is provided with a port BLUE1_CTR, a port RED1_CTR, a port GREEN1_CTR, a port BLUE2_CTR, a port RED2_CTR, and a port GREEN2_CTR; After the port BLUE1_CTR is connected to the first LED driving circuit, the diode BLUE1 is driven; After the port RED1_CTR is connected to the second LED driving circuit, the diode RED1 is driven; After the port GREEN1_CTR is connected to the third LED driving circuit, the diode GREEN1 is driven; After the port BLUE2_CTR is connected to the fourth LED driving circuit, the diode BLUE2 is driven; After the port RED2_CTR is connected to the fifth LED driving circuit, the diode RED2 is driven; After the port GREEN2_CTR is connected to the sixth LED driving circuit, it drives the diode GREEN3; The first LED driving circuit includes a capacitor C1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a transistor Q1, a transistor Q2 and a transistor Q3; The positive electrode of the power supply VS is connected to the emitter of the transistor Q1 and the front end of the resistor R4, the rear end of the resistor R4 is connected to the base of the transistor Q1 and the emitter of the transistor Q2, the collector of the transistor Q1 is connected to the base of the transistor Q2 and the front end of the resistor R3, and the collector of the transistor Q2 is connected to the front end of the resistor R5; The rear end of the resistor R5 is connected to the positive electrode of the diode BLUE1, the negative electrode of the diode BLUE1 is grounded, and the positive electrode of the diode BLUE1 is connected in series with the capacitor C3 and then grounded; The rear end of the resistor R3 is connected to the collector of the transistor Q3, the emitter of the transistor Q3 is grounded, the port BLUE1_CTR is connected in series with the resistor R1 and the resistor R2 and then grounded, the common end of the resistor R1 and the resistor R2 is connected to the base of the transistor Q3, the port BLUE1_CTR is connected in series with the capacitor C1 and then grounded, and the base of the transistor Q3 is connected in series with the capacitor C2 and then grounded.

4. The child retention detection system in a vehicle according to claim 3, characterized in that: The MCU is provided with a port RED1_V+_ADC and a port RED2_V+_ADC; The port RED1_V+_ADC is connected to the front end of the resistor R6, the rear end of the resistor R6 is connected to the positive electrode of the diode RED1, the negative electrode of the diode RED1 is grounded, the port RED1_V+_ADC is connected in series with the capacitor C4 and then grounded, and the positive electrode of the diode RED1 is connected in series with the capacitor C5 and then grounded; The port RED2_V+_ADC is connected to the front end of the resistor R7, the rear end of the resistor R7 is connected to the anode of the diode RED2, the cathode of the diode RED2 is grounded, the port RED2_V+_ADC is connected in series with the capacitor C6 and then grounded, and the anode of the diode RED2 is connected in series with the capacitor C7 and then grounded.

5. The child retention detection system in a vehicle according to claim 1, characterized in that: The MCU is provided with a port ReadLight_R_CTR and a port ReadLight_L_CTR; the in-vehicle child retention detection system is provided with a port ReadLight_R_EN and a port ReadLight_L_EN; The positive electrode of the power supply VS is connected to the front end of the resistor R11 and the resistor R12, the rear ends of the resistor R11 and the resistor R12 are connected to the positive electrode of the diode LED11 and the front end of the capacitor C11, the negative electrode of the diode LED11 and the rear end of the capacitor C11 are connected to the front end of the resistor R13, the rear end of the resistor R13 is connected to the OUT end of the chip U11, and the rear end of the resistor R13 is connected in series with the capacitor C12 and then grounded; The EN terminal of the chip U11 is connected to the rear end of the resistor R14, and the front end of the resistor R14 is connected to the port ReadLight_R_CTR; The GND terminal and PE terminal of the chip U11 are grounded, the ISET terminal of the chip U11 is connected in series with a capacitor C13 and then grounded, a resistor R15 is connected in parallel across the capacitor C13, and a resistor R16 is connected in parallel across the capacitor C13; The rear end of the resistor R13 is also connected to the OUT end of the chip U12. The GND end and the PE end of the chip U12 are grounded. The ISET end of the chip U12 is connected in series with the capacitor C14 and then grounded. The two ends of the capacitor C14 are connected in parallel with the resistor R17. The two ends of the capacitor C13 are connected in parallel with the resistor R18. The EN end of the chip U12 is connected to the port ReadLight_R_EN. The positive electrode of the power supply VS is connected to the front end of the resistor R21 and the resistor R22, the rear end of the resistor R21 and the resistor R22 is connected to the positive electrode of the diode LED21 and the front end of the capacitor C21, the negative electrode of the diode LED21 and the rear end of the capacitor C21 are connected to the OUT end of the chip U21, and the rear end of the resistor R23 is connected in series with the capacitor C22 and then grounded; The EN terminal of the chip U21 is connected to the rear end of the resistor R24, the front end of the resistor R24 ​​is connected to the rear end of the resistor R23, and the front end of the resistor R23 is connected to the port ReadLight_L_CTR; The GND terminal and PE terminal of the chip U21 are grounded, the ISET terminal of the chip U21 is connected in series with a capacitor C23 and then grounded, a resistor R25 is connected in parallel across the capacitor C23, and a resistor R26 is connected in parallel across the capacitor C23; The rear end of resistor R23 is also connected to the OUT end of chip U22. The GND and PE ends of chip U22 are grounded. The ISET end of chip U22 is connected in series with capacitor C24 and then grounded. Resistor R27 is connected in parallel across capacitor C24. Resistor R28 is connected in parallel across capacitor C23. The EN end of chip U22 is connected to port ReadLight_L_EN.

6. The child in-vehicle detection system according to claim 1, characterized in that: The MCU is provided with a port BCALL_Indcator and a port DOOR_CTR_Indcator; The positive electrode of the power supply VS is connected to the emitter of the transistor Q31 and the front end of the resistor R31, the rear end of the resistor R31 is connected to the base of the transistor Q31 and the front end of the resistor R33, the collector of the transistor Q31 is connected to the front end of the resistor R32, the rear end of the resistor R32 is connected to the positive electrode of the diode LED31, the negative electrode of the diode LED31 is grounded, and the positive electrode of the diode BCALL_LED is connected in series with the capacitor C31 and then grounded; The rear end of the resistor R33 is connected to the collector of the transistor Q32, the emitter of the transistor Q32 is grounded, the port BCALL_Indcator is connected in series with the resistor R34 and the resistor R35 and then grounded, the common end of the resistor R34 and the resistor R35 is connected to the base of the transistor Q32, the base of the transistor Q32 is connected in series with the capacitor C32 and then grounded, and the port BCALL_Indcator is connected in series with the capacitor C33 and then grounded; The positive electrode of the power supply VS is connected to the emitter of the transistor Q41 and the front end of the resistor R41, the rear end of the resistor R41 is connected to the base of the transistor Q41 and the front end of the resistor R43, the collector of the transistor Q41 is connected to the front end of the resistor R42, the rear end of the resistor R42 is connected to the positive electrode of the diode LED41, the negative electrode of the diode LED41 is grounded, and the positive electrode of the diode BCALL_LED is connected in series with the capacitor C31 and then grounded; The rear end of the resistor R43 is connected to the collector of the transistor Q42, the emitter of the transistor Q42 is grounded, the port DOOR_CTR_Indcator is connected in series with the resistor R44 and the resistor R45 and then grounded, the common end of the resistor R44 and the resistor R45 is connected to the base of the transistor Q42, the base of the transistor Q42 is connected in series with the capacitor C42 and then grounded; The in-vehicle child retention detection system is further provided with a terminal group main_connector, and the terminal group main_connector is provided with a port PassengerAirbag_power, a port PassengerAirbag_ON and a port PassengerAirbag_OFF; The port PassengerAirbag_power is connected to the front end of the resistor R51, the rear end of the resistor R51 is connected to the front end of the resistor R52, the rear end of the resistor R52 is connected to the front end of the resistor R53, the rear end of the resistor R53 is connected to the front end of the resistor R54 and the front end of the resistor R55, the rear end of the resistor R54 is connected to the front end of the resistor R56, the rear end of the resistor R56 is connected to the anode of the diode VD51, the cathode of the diode VD51 is connected to PassengerAirbag_ON, the rear end of the resistor R55 is connected to the front end of the resistor R57, the rear end of the resistor R57 is connected to the anode of the diode VD52, and the cathode of the diode VD52 is connected to PassengerAirbag_OFF; The port PassengerAirbag_power is connected in series with capacitor C55 and then grounded, the front end of resistor R52 is connected to the positive electrode of diode LED51 and the front end of capacitor C51, and the rear end of resistor R52 is connected to the negative electrode of diode LED52 and the rear end of capacitor C51; The front end of the resistor R53 is connected to the positive electrode of the diode LED52 and the front end of the capacitor C52, and the rear end of the resistor R53 is connected to the negative electrode of the diode LED52 and the rear end of the capacitor C52; The front end of the resistor R56 is connected to the positive electrode of the diode LED53 and the front end of the capacitor C53, and the rear end of the resistor R56 is connected to the negative electrode of the diode LED53 and the rear end of the capacitor C53; The front end of the resistor R57 is connected to the anode of the diode LED54 and the front end of the capacitor C54, and the rear end of the resistor R57 is connected to the cathode of the diode LED54 and the rear end of the capacitor C54.

7. The child retention detection system in a vehicle according to claim 6, characterized in that: The MCU is provided with a port DOOR_CTR_Indicator_W and a port ILL_PWM, and the terminal group main_connector is provided with a port illuminate_power; The port illuminate_power is connected to the positive electrode of the diode VD601, the negative electrode of the diode VD601 is connected to the front end of the resistor R601, the rear end of the resistor R601 is grounded, the negative electrode of the diode VD601 is connected to the port LL_power, the port illuminate_power is connected to the ground via a capacitor C601, and the port LL_power is connected to the ground via a capacitor C602; The port LL_power is connected to the front end of the resistor R62, the rear end of the resistor R62 is connected to the anode of the diode LED61, the cathode of the diode LED61 is connected to the anode of the diode LED62, the cathode of the diode LED62 is grounded, the two ends of the diode LED61 are connected in parallel with the capacitor C61, and the two ends of the diode LED62 are connected in parallel with the capacitor C62; The port LL_power is connected to the front end of the resistor R63, the rear end of the resistor R63 is connected to the anode of the diode LED63, the cathode of the diode LED63 is connected to the anode of the diode LED64, the cathode of the diode LED64 is grounded, the two ends of the diode LED63 are connected in parallel with the capacitor C63, and the two ends of the diode LED64 are connected in parallel with the capacitor C64; The port LL_power is connected to the front end of the resistor R64, the rear end of the resistor R64 is connected to the anode of the diode LED65, the cathode of the diode LED65 is connected to the anode of the diode LED66, the cathode of the diode LED66 is grounded, the two ends of the diode LED65 are connected in parallel with the capacitor C65, and the two ends of the diode LED66 are connected in parallel with the capacitor C66; The port LL_power is connected to the front end of the resistor R65, the rear end of the resistor R65 is connected to the anode of the diode LED67, the cathode of the diode LED67 is connected to the anode of the diode LED68, the cathode of the diode LED68 is grounded, the two ends of the diode LED67 are connected in parallel with the capacitor C67, and the two ends of the diode LED68 are connected in parallel with the capacitor C68; The port LL_power is connected to the front end of the resistor R66, the rear end of the resistor R66 is connected to the positive electrode of the diode LED69, the negative electrode of the diode LED69 is grounded, the two ends of the diode LED69 are connected in parallel with the capacitor C69, and the port LL_power is connected in series with the capacitor C603 and then grounded; The port LL_power is connected to the front end of the resistor R71, the rear end of the resistor R71 is connected to the anode of the diode LED71, and the cathode of the diode LED71 is grounded. The port ILL_PWM is connected to the front end of the resistor R72, the rear end of the resistor R72 is connected to the anode of the diode LED71, the anode of the diode LED71 is connected to the collector of the transistor Q71, and the emitter of the transistor Q71 is grounded. The port BCALL_Indcator is connected in series with resistors R73 and R74 and then grounded. The common end of the resistors R73 and R74 is connected to the base of the transistor Q71. The port LL_power is connected to a capacitor C71 and then to ground. The port ILL_PWM is connected to a capacitor C72 and then to ground. The port BCALL_Indcator is connected to a capacitor C73 and then to ground. A capacitor C74 is connected in parallel at both ends of the diode LED71. The port LL_power is connected to the front end of the resistor R75, the rear end of the resistor R75 is connected to the positive electrode of the diode LED72, the negative electrode of the diode LED72 is grounded, the positive electrode of the diode LED72 is connected to the collector of the transistor Q72, the emitter of the transistor Q72 is grounded, the port DOOR_CTR_Indicator_W is connected in series with the resistor R76 and the resistor R77 and then grounded, and the common end of the resistor R76 and the resistor R77 is connected to the base of the transistor Q72; The port LL_power is connected in series with a capacitor C75 and then grounded. The port DOOR_CTR_Indicator_W is connected in series with a capacitor C76 and then grounded. A capacitor C77 is connected in parallel across the diode LED72.

8. The child retention detection system in a vehicle according to claim 7, characterized in that: The MCU is provided with a port B_CALL, a port DOOR_CTR, a port ReadTouch_LH, and a port ReadTouch_RH, and the child retention detection system in the vehicle is provided with a touch switch B_CALL_TOUCH, a touch switch DOOR_TOUCH, a touch switch Touch_LH, and a touch switch Touch_RH; Port B_CALL is connected to the rear end of resistor R81, and the front end of resistor R81 is connected to touch switch B_CALL_TOUCH. Port DOOR_CTR is connected to the rear end of resistor R82, and the front end of resistor R82 is connected to touch switch DOOR_TOUCH. Port ReadTouch_LH is connected to the rear end of resistor R83, and the front end of resistor R83 is connected to touch switch Touch_LH. Port ReadTouch_RH is connected to the rear end of resistor R84, and the front end of resistor R84 is connected to touch switch Touch_RH. The MCU is provided with a port B-Call_Switch_CTR, a port Door_Signal_ADC, a port door_signal_mcu and a port LIN_BUS_MCU, and the terminal group main_connector is provided with a port Door_Signal_Input, a port Door_Signal_Output, a port 12V_Power_Switch, a port LIN_BUS and a port B-Call_Switch; The port Door_Signal_Input is connected to the front end of the resistor R111, the rear end of the resistor R111 is connected to the front ends of the resistor R114 and the resistor R112, the rear end of the resistor R114 is grounded, the rear end of the resistor R112 is connected to the port Door_Signal_ADC, the port Door_Signal_Input is connected to the ground after the capacitor C111 is connected in series with the port Door_Signal_Input, the port Door_Signal_Input is connected to the ground after the capacitor C113 is connected in series with the port Door_Signal_Input, the capacitor C112 is connected in parallel at both ends of the resistor R114, the positive pole of the power supply VS is connected to the front end of the resistor R113, the rear end of the resistor R113 is connected to the positive pole of the diode VD111, the negative pole of the diode VD111 is connected to the port Door_Signal_Input, the front end of the resistor R114 is connected to the negative pole of the diode VD112, and the positive pole of the diode VD112 is grounded; Port door_signal_mcu connected to port Door_Signal_Output; Port B-Call_Switch_CTR is connected to the front end of resistor R121, the rear end of resistor R121 is connected to the front end of resistor R122, the rear end of resistor R122 is grounded, the common end of resistor R121 and resistor R122 is connected to the base of transistor Q121, the emitter of transistor Q121 is grounded, the collector of transistor Q121 is connected to the front end of resistor R123 and the front end of resistor R124, the rear end of resistor R124 is grounded, the rear end of resistor R123 is connected to the front end of resistor R125, the rear end of resistor R125 is connected to port B-Call_Switch, port B-Call_Switch_CTR is connected to ground after capacitor C121 is connected in series, and port B-Call_Switch is connected to ground after capacitor C122 is connected in series; The port 12V_Power_Switch is connected to the front end of the resistor R131, the resistor R131 is connected to the front end of the self-locking switch K131, the rear end of the self-locking switch K131 is grounded, and the port 12V_Power_Switch is connected to the capacitor C131 in series and then grounded; The port LIN_BUS_MCU is connected to the front end of the resistor R141, the rear end of the resistor R141 is connected to the port LIN_BUS, the port LIN_BUS_MCU is connected to the capacitor C141 in series and then grounded, the port LIN_BUS is connected to the cathode of the diode VD141, the anode of the diode VD141 is connected to the anode of the diode VD142, and the cathode of the diode VD142 is grounded; The MCU is provided with a port POWER_ADC and a port VS_MCU, and the terminal group main_connector is provided with a port POWER; The port POWER is connected to the front end of the capacitor C151, the rear end of the capacitor C151 is connected to the front end of the capacitor C152, and the rear end of the capacitor C152 is grounded; the port POWER is connected to the positive electrode of the diode VD151, the negative electrode of the diode VD151 is connected to the negative electrode of the diode VD152, and the positive electrode of the diode VD152 is grounded; the port POWER is connected to the positive electrode of the diode VD153, the negative electrode of the diode VD153 is connected to the front end of the resistor R151 and the front end of the resistor R152, the rear end of the resistor R152 is grounded, and the resistor The rear end of R151 is connected to port VS_MCU, the cathode of diode VD153 is connected to the positive electrode of power supply VS, the cathode of diode VD153 is connected to the positive electrode of capacitor C153, the cathode of capacitor C153 is grounded, the cathode of diode VD153 is connected to the front end of capacitor C154, the rear end of capacitor C154 is grounded, the cathode of diode VD153 is connected to the front end of capacitor C155, the rear end of capacitor C155 is grounded, port VS_MCU is connected in series with capacitor C156 and then grounded, and port VS_MCU is connected in series with capacitor C157 and then grounded; Port VS_MCU is connected to the front end of resistor R161, the rear end of resistor R161 is connected to the front end of resistor R162, the rear end of resistor R162 is grounded, the common end of resistor R161 and resistor R162 is connected to the front end of resistor R163, the rear end of resistor R163 is connected to port POWER_ADC, port POWER_ADC is connected to ground after capacitor C161 is connected in series, and capacitor C162 is connected in parallel at both ends of resistor R162.

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