Integrated type rear lighting lamp system

Abstract

The utility model discloses an integrated type rear lighting lamp system which comprises a vehicle body air-conditioning system and a rear lighting lamp assembly, and the vehicle body air-conditioning system is communicated with the rear lighting lamp assembly through an air-conditioning pipeline. The rear lamp assembly comprises a rear lamp shell and a lamp panel arranged in the rear lamp shell. The lamp panel is provided with an LED lamp set, a millimeter wave radar module, a temperature and humidity sensor and a control circuit. The control circuit comprises a power management module, a first communication module, an LDO module, a second communication module, an MCU module and an LED drive circuit. According to the integrated rear lighting lamp system provided by the utility model, the millimeter wave radar and the temperature and humidity sensor are integrated in the rear lighting lamp, so that not only is the installation space saved, but also the integrated rear lighting lamp system has the functions of detecting a rear vehicle and monitoring the working environment of the rear lighting lamp in real time.

Description

Technical Field

[0001] The utility model relates to an integrated rear lighting system, belonging to the technical field of vehicle lights. Background Art

[0002] At present, commonly used vehicle taillights generally do not have a sensing function and can only provide a lighting function. Generally, vehicles are usually equipped with four corner radars and one front radar, which also have strong sensing capabilities in rainy and foggy weather conditions. As an independent sensing module, millimeter-wave radar usually requires a shell. If multiple millimeter-wave radars are equipped, it will take up a lot of extra space in the car and require additional interfaces. Generally, vehicles cannot monitor the working environment of the taillights in real time, and cannot alarm to inform customers when the temperature and humidity of the taillights are abnormal, resulting in the inability to carry out maintenance and replacement in advance, which affects driving safety and causes accidents. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an integrated rear light system, which integrates millimeter wave radar and temperature and humidity sensors in the rear light, thereby not only saving installation space but also having the functions of following vehicle detection and real-time monitoring of the rear light working environment.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] An integrated rear light system comprises a vehicle body air conditioning system and a rear light assembly, wherein the vehicle body air conditioning system is connected to the rear light assembly through an air conditioning pipeline;

[0006] The rear lamp assembly comprises a rear lamp housing and a lamp board arranged in the rear lamp housing, wherein the lamp board is provided with an LED lamp group, a millimeter wave radar module, a temperature and humidity sensor and a control circuit;

[0007] The control circuit includes a power management module, a first communication module, an LDO module, a second communication module, an MCU module and an LED driving circuit;

[0008] The output end of the temperature and humidity sensor module is connected to the MCU module. The temperature and humidity sensor module is used to detect the temperature and humidity in the rear lamp housing. When the temperature and humidity in the rear lamp housing exceed the warning value, the vehicle body air conditioning system adjusts the temperature and humidity in the rear lamp housing.

[0009] The millimeter-wave radar module is connected to the vehicle body communication system through the first communication module, the MCU module is connected to the vehicle body communication system through the second communication module, the millimeter-wave radar module is connected to the MCU module, and the millimeter-wave radar module is used to detect the distance between the rear vehicle and the vehicle;

[0010] The input end of the LED driving circuit is connected to the MCU module, and the output end of the LED driving circuit is connected to the LED lamp group.

[0011] Furthermore, the control circuit further comprises a power supply module, and the power supply module comprises a power management module and an LDO module;

[0012] The input end of the power management module is connected to the vehicle body power supply system, and the output end of the power management module supplies power to the millimeter wave radar module;

[0013] The input end of the LDO module is connected to the vehicle body power supply system, and the output end of the LDO module is respectively used to power the temperature and humidity sensor module, the MCU module, the first communication module, the second communication module and the LED drive circuit.

[0014] Furthermore, the LDO module includes a power input processing module and a power conversion chip, the input end of the power input processing module is connected to the vehicle body power supply system, the output end of the power input processing module is respectively powered by the temperature and humidity sensor, the LED drive circuit and the power conversion chip, and the output end of the power conversion chip is powered by the MCU module, the first communication module and the second communication module.

[0015] Furthermore, the first communication module is a CAN transceiver.

[0016] Furthermore, the second communication module is a CAN transceiver.

[0017] By adopting the above technical solution, the utility model has the following beneficial effects:

[0018] 1. After the millimeter-wave radar is integrated into the rear lights, it has not only the lighting function, but also the sensing function, which can detect objects behind. The space occupied by the millimeter-wave radar is reduced, and the radar shell is not needed. The interface is also integrated into the rear lights interface, which reduces the cost. Some extra space in the rear lights is utilized to reduce waste. After the millimeter-wave radar is integrated into the rear lights, the use of duplicate lines, such as power supply lines, is reduced.

[0019] 2. It can monitor the working environment of the rear lights in real time. If the temperature is too high or too low, or the humidity is too high, the vehicle body air conditioning system can be used to normalize the working environment of the rear lights, thereby increasing the service life of the rear lights. The temperature of the rear lights can be monitored in real time. If the temperature exceeds or falls below the normal range for too long or the number of abnormalities is too many, a warning message will be given to the driver, reminding him to pay attention to the abnormal state of the rear lights of the following vehicles, which are on the verge of failure, and it is recommended to inspect them.

[0020] 3. If the driver does not turn on the rear lights when driving at night, it will cause safety hazards to the following vehicles. Drivers are reminded to turn on the rear lights to avoid accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an integrated rear lighting system of the utility model;

[0022] Figure 2 for Figure 1 A top view of

[0023] Figure 3 This is a schematic diagram of the structure of the light board of the utility model;

[0024] Figure 4 It is a principle block diagram of the control circuit of the utility model;

[0025] Figure 5 This is a circuit schematic diagram of the MCU module of the utility model;

[0026] Figure 6 This is a circuit schematic diagram of the temperature and humidity sensor of the utility model;

[0027] Figure 7 This is a circuit schematic diagram of the power management module of the utility model;

[0028] Figure 8 This is a circuit schematic diagram of the LDO module, LED drive circuit, and LED lamp group of the utility model;

[0029] Fig. 9 It is a circuit schematic diagram of the first communication module and the second communication module of the utility model;

[0030] Fig.10 This is a circuit schematic diagram of the millimeter wave radar module of the present utility model. DETAILED DESCRIPTION

[0031] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0032] like Figure 1 , 2 As shown, this embodiment provides an integrated rear light system, which includes a vehicle body air conditioning system 1 and a rear light assembly 3. The vehicle body air conditioning system 1 is connected to the rear light assembly 3 through an air conditioning pipeline 2. Two rear light assemblies 3 are installed at the rear of the vehicle body.

[0033] The rear lamp assembly 3 of the present embodiment includes a rear lamp housing and a lamp panel arranged in the rear lamp housing. Figure 3 As shown, the light board is provided with an LED light group 4, a millimeter wave radar module 5, a temperature and humidity sensor 6 and a control circuit.

[0034] Among them, Figure 4As shown, the control circuit includes a power management module, a first communication module, an LDO module, a second communication module, an MCU module, an LED driving circuit and a power supply module.

[0035] The output end of the temperature and humidity sensor 6 is connected to the MCU module. The temperature and humidity sensor 6 is used to detect the temperature and humidity in the rear lamp housing. When the temperature and humidity in the rear lamp housing exceed the warning value, the vehicle body air conditioning system 1 adjusts the temperature and humidity in the rear lamp housing. Figure 6 As shown, the temperature and humidity sensor 6 uses a temperature and humidity sensor chip U2, model PHDC3020DEFTQ1.

[0036] The millimeter wave radar module 5 is connected to the vehicle body communication system through the first communication module, the MCU module is connected to the vehicle body communication system through the second communication module, the millimeter wave radar module 5 is connected to the MCU module, and the millimeter wave radar module 5 is used to detect the distance between the rear vehicle and the vehicle.

[0037] The input end of the LED driving circuit is connected to the MCU module, and the output end of the LED driving circuit is connected to the LED lamp group 4.

[0038] The millimeter wave radar module 5 and the temperature and humidity sensor 6 are integrated in the rear lamp. The temperature and humidity sensor 6 can monitor the temperature and humidity in the vehicle rear lamp in real time and transmit the temperature and humidity data to the MCU module. If the temperature in the rear lamp is too high or too low, or the humidity exceeds the warning value, the MCU module will transmit an alarm message to the vehicle body communication system in the form of CAN communication, and then the vehicle body communication system will send a message to the vehicle body air conditioning system 1. The vehicle body air conditioning system 1 will turn on the heating, cooling, and dehumidification functions, and heat up, cool down, and dehumidify the rear lamp through the air conditioning duct, so that the temperature and humidity in the rear lamp are in a normal state.

[0039] The integrated millimeter-wave radar module 5 has a sensing function and can sense objects behind. During normal driving, when a vehicle approaches from the side and rear, the millimeter-wave radar will sense it and send a signal to the body communication system through CAN communication. The body communication system will display an alarm message on the car's central control screen. If in dimly lit scenes such as at night or in an underground garage, when the millimeter-wave radar detects the presence of other vehicles behind, but if the rear lights are not turned on at this time, the MCU module turns on the rear lights and sends the information about the vehicle behind to the body communication system to inform the driver to pay attention and avoid accidents.

[0040] like Figure 4 As shown, the control circuit of this embodiment further includes a power supply module, and the power supply module includes a power management module and an LDO module.

[0041] like Figure 4As shown, the input end of the power management module of this embodiment is connected to the vehicle body power supply system, and the output end of the power management module supplies power to the millimeter wave radar module 5. Figure 7 As shown, the power management module uses a power management chip U1, model LP87524JRNFRQ1. The power management chip U1 converts the 12V power provided by the car power supply system into a 3.3V voltage for use by the millimeter wave radar module 5.

[0042] like Figure 1 As shown, the input end of the LDO module of this embodiment is connected to the vehicle body power supply system, and the output end of the LDO module is used to supply power to the temperature and humidity sensor 6, the MCU module, the first communication module, the second communication module and the LED drive circuit. Figure 5 As shown, the LDO module includes a power input processing module and a power conversion chip. The input end of the power input processing module is connected to the vehicle body power supply system, and the output end of the power input processing module is respectively powered by the temperature and humidity sensor (6), the LED drive circuit and the power conversion chip. The output end of the power conversion chip is powered by the MCU module, the first communication module and the second communication module. Specifically: the power input processing module uses TVS tube LT1 for anti-static and surge protection, and the diode LD7 is used for anti-reverse connection protection. One output of the diode LD7 powers the temperature and humidity sensor 6 and the LED drive circuit, and the other output is connected to the power conversion chip U20. The power conversion chip U20 converts the 12V power supply into a 5V voltage for use by the MCU module, the first communication module and the second communication module. As shown Figure 8 As shown, the LED lamp group 4 includes two LED lamp strings, LED1 and LED3 are one, and LED2 and LED4 are the other. The LED driving circuit includes two corresponding paths, each path is composed of a triode and a MOS tube, and the MCU module controls the D pole and S pole of the MOS tube to conduct, so that the LED lamp string is grounded, forming a loop, and the LED lamp string is lit.

[0043] like Figure 1 As shown, the millimeter wave radar module 5 of this embodiment is connected to the vehicle body communication system through the first communication module, the MCU module is connected to the vehicle communication system through the second communication module, and the millimeter wave radar module 5 is connected to the MCU module. Fig.10 As shown, the millimeter wave radar module 5 of this embodiment uses a radar chip U4, model X1642BIGABL. Figure 5 As shown, the MCU module of this embodiment uses an MCU chip U1, model FS32K144HAT0MLHT. Fig. 9 As shown, the first communication module of this embodiment is a CAN transceiver U12, and the second communication module is a CAN transceiver U17, both of which are model TCAN1042HGVDRBRQ1.

[0044] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated rear lighting system, characterized in that: It comprises a vehicle body air conditioning system (1) and a rear light assembly (3), wherein the vehicle body air conditioning system (1) is connected to the rear light assembly (3) via an air conditioning pipeline (2); The rear light assembly (3) comprises a rear light housing and a light board arranged in the rear light housing, wherein the light board is provided with an LED light group (4), a millimeter wave radar module (5), a temperature and humidity sensor (6) and a control circuit; The control circuit includes a power management module, a first communication module, an LDO module, a second communication module, an MCU module and an LED driving circuit; The output end of the temperature and humidity sensor (6) is connected to the MCU module, and the temperature and humidity sensor (6) is used to detect the temperature and humidity in the rear lamp housing. When the temperature and humidity in the rear lamp housing exceed a warning value, the vehicle body air conditioning system (1) adjusts the temperature and humidity in the rear lamp housing; The millimeter wave radar module (5) is connected to the vehicle body communication system via a first communication module, the MCU module is connected to the vehicle body communication system via a second communication module, the millimeter wave radar module (5) is connected to the MCU module, and the millimeter wave radar module (5) is used to detect the distance between the rear vehicle and the vehicle; The input end of the LED driving circuit is connected to the MCU module, and the output end of the LED driving circuit is connected to the LED lamp group (4).

2. The integrated rear lighting system according to claim 1, characterized in that: The control circuit also includes a power supply module, and the power supply module includes a power management module and an LDO module; The input end of the power management module is connected to the vehicle body power supply system, and the output end of the power management module supplies power to the millimeter wave radar module (5); The input end of the LDO module is connected to the vehicle body power supply system, and the output end of the LDO module is respectively used to power the temperature and humidity sensor (6), the MCU module, the first communication module, the second communication module and the LED drive circuit.

3. The integrated rear lighting system according to claim 2, characterized in that: The LDO module comprises a power input processing module and a power conversion chip, wherein the input end of the power input processing module is connected to the vehicle body power supply system, the output end of the power input processing module respectively supplies power to the temperature and humidity sensor (6), the LED drive circuit and the power conversion chip, and the output end of the power conversion chip supplies power to the MCU module, the first communication module and the second communication module.

4. The integrated rear lighting system according to claim 1, characterized in that: The first communication module is a CAN transceiver.

5. The integrated rear lighting system according to claim 1, characterized in that: The second communication module is a CAN transceiver.

Images