Multifunctional integrated headlamp

Abstract

The utility model discloses a multifunctional integrated headlamp, and belongs to the technical field of automobile lighting. The LED lamp comprises a control module, an LED module and a fan module, the control module comprises a millimeter wave radar module, an ambient light sensor, a temperature and humidity sensor, an MCU module, a first CAN transceiver and a second CAN transceiver. The output ends of the ambient light sensor and the temperature and humidity sensor are connected with the input end of the millimeter wave radar module; the output end of the millimeter wave radar module is connected with the input end of the MCU module; and the output end of the MCU module is connected with the input ends of the LED module and the fan module. According to the multifunctional integrated headlamp, linkage of the millimeter wave radar and the headlamp can be achieved, the risk that the headlamp fails is avoided in advance, the service life of the headlamp and the service life of a storage battery are prolonged, the structural cost is reduced, and the vehicle space is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of multifunctional integrated headlamps, belong to automobile lighting technical field. BACKGROUND

[0002] At present, commonly used vehicle-mounted headlamps are generally not equipped with temperature and humidity sensors and ambient light sensors, and their internal structures are simple, usually using driving circuit to drive lamp beads to control the on-off of lamp beads. Millimeter wave radar and headlamps are usually independent parts, and the two usually do not communicate and interact, and need to communicate and interact through domain controller.

[0003] In the prior art, the temperature in the headlamp and the brightness of the current environment cannot be monitored in real time, and there is a risk of headlamp failure during night driving, which is not conducive to the driving safety of the driver. The closing and opening of the headlamp is usually controlled by the driver, and there may be a situation that the driver directly turns off the engine after night driving and forgets to turn off the headlamp switch. During daytime driving, the driver cannot notice that the headlamp has been turned on due to the factor of ambient light. Over time, the service life of the headlamp will be reduced because the temperature during the day is higher than that at night, which accelerates the aging of the headlamp and causes unnecessary damage to the storage battery. The commonly used front angle millimeter wave radar occupies the space inside the vehicle, and its shell and other structural parts also occupy additional costs. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a multifunctional integrated headlamp, which realizes the linkage of millimeter wave radar and headlamp, avoids the risk of headlamp failure in advance, avoids the unnecessary opening of the headlamp, prolongs the service life of the headlamp and storage battery, avoids the danger caused by not turning on the headlamp in time, reduces the structural cost, saves vehicle space.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0006] The utility model provides a kind of multifunctional integrated headlamp, it is characterized in that, it includes control module, LED module and fan module;

[0007] The control module includes millimeter wave radar module, ambient light sensor, temperature and humidity sensor, MCU module, first CAN transceiver and second CAN transceiver;

[0008] The ambient light sensor is used to monitor the ambient light intensity around the vehicle in real time, and the temperature and humidity sensor is used to detect the temperature and humidity in the headlamp in real time. The output terminals of the ambient light sensor and temperature and humidity sensor are connected to the input terminal of the millimeter wave radar module.

[0009] The millimeter wave radar module communicates with the vehicle body controller through the first CAN transceiver, the output end of the millimeter wave radar module is connected with the input end of the MCU module, and the millimeter wave radar module is used for monitoring objects in the blind area of the vehicle field of view.

[0010] The MCU module communicates with the vehicle body controller through the second CAN transceiver, the output end of the MCU module is connected with the input end of the LED module and the fan module, and the fan module is used for heat dissipation of the headlamp.

[0011] The fan module comprises a fan driving chip and a fan, the input end of the fan driving chip is connected with the output end of the MCU module, and the output end of the fan driving chip is connected with the fan.

[0012] Further, the millimeter wave radar module comprises a millimeter wave radar chip and an antenna.

[0013] The antenna is connected with the input end of the millimeter wave radar chip, the millimeter wave radar chip communicates with the vehicle body controller through the first CAN transceiver, the output end of the ambient light sensor and the temperature and humidity sensor is connected with the input end of the millimeter wave radar chip, and the output end of the millimeter wave radar chip is connected with the input end of the MCU module.

[0014] Further, the MCU module comprises an MCU chip, the MCU chip communicates with the vehicle body controller through the second CAN transceiver, the input end of the MCU chip is connected with the output end of the millimeter wave radar chip, and the output end of the MCU chip is connected with the input end of the LED module and the fan module.

[0015] Further, the LED module comprises an LED driving chip and an LED lamp group.

[0016] The input end of the LED driving chip is connected with the output end of the MCU chip.

[0017] The output end of the LED driving chip is connected with the LED lamp group.

[0018] Further, it further comprises a power module, the power module comprises a first power module and a second power module.

[0019] The input end of the first power module is connected with the vehicle body power supply system, and the output end of the first power module supplies power for the millimeter wave radar chip.

[0020] The input end of the second power module is connected with the vehicle body power supply system, and the output end of the second power module supplies power for the MCU chip, the LED lamp group, the first CAN transceiver and the second CAN transceiver respectively.

[0021] Further, the first power supply module comprises a first DCDC chip, a second DCDC chip, a third DCDC chip and a first LDO chip;

[0022] The input end of the first DCDC chip is connected with the vehicle body power supply system, and the output end of the first DCDC chip is connected with the input end of the second DCDC chip;

[0023] The output end of the second DCDC chip is connected with the input end of the third DCDC chip, the output end of the third DCDC chip supplies power for the millimeter wave radar chip, and the output end of the third DCDC chip is connected with the input end of the first LDO chip;

[0024] The output end of the first LDO chip supplies power for the millimeter wave radar chip.

[0025] Further, the second power supply module comprises a second LDO chip;

[0026] The input end of the second LDO chip is connected with the vehicle body power supply system, and the output end of the second LDO chip supplies power for the MCU chip, the LED lamp group, the first CAN transceiver and the second CAN transceiver respectively.

[0027] The above technical scheme has the following beneficial effects:

[0028] The temperature and humidity sensor is integrated in the headlamp, so that the temperature and humidity in the headlamp can be monitored in real time, if the temperature and humidity exceeds the early warning value for a long time, the driver will be warned that the headlamp is abnormal and needs to be checked, the fan speed is controlled according to the temperature in the headlamp detected by the temperature and humidity sensor, and the heat dissipation of the headlamp is realized, so that the risk of headlamp failure is avoided in advance. The ambient light sensor integrated in the headlamp can monitor the ambient light intensity around the vehicle in real time, and according to the ambient light intensity, the driver is suggested to turn off or turn on the headlamp, so that the headlamp is not turned on in unnecessary cases, the service life of the headlamp and the storage battery is prolonged, and the danger encountered due to not turning on the headlamp in time is avoided. The millimeter wave radar is integrated in the headlamp, the linkage of the headlamp and the millimeter wave radar is realized, the shell and terminal structure are removed, the cost is reduced, no additional space of the vehicle is occupied, the MCU module and the millimeter wave radar module are integrated on one board, and the communication interference between the MCU module and the millimeter wave radar module is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The structure schematic view for the headlamp installed on the vehicle;

[0030] Figure 2 The system structure view of the headlamp;

[0031] Figure 3 A principle block diagram of the multifunctional integrated headlamp;

[0032] Figure 4 A principle diagram of the multifunctional integrated headlamp;

[0033] Figure 5 A circuit principle diagram of the millimeter wave radar module;

[0034] Figure 6 A circuit principle diagram of the MCU module;

[0035] Figure 7 A circuit principle diagram of the LED driving circuit and the LED lamp group;

[0036] Figure 8 A circuit principle diagram of the fan driving circuit;

[0037] Figure 9 A circuit principle diagram of the first CAN transceiver and the second CAN transceiver;

[0038] Figure 10 A circuit principle diagram of the power module;

[0039] Figure 11 A use scene schematic diagram. DETAILED DESCRIPTION

[0040] In order to make the content of the utility model more easily and clearly understood, the utility model is further explained in detail below according to specific embodiments and in conjunction with the drawings.

[0041] As shown in Figure 1 , 2 and 3, the embodiment provides a multifunctional integrated headlamp, which comprises a control module 1, an LED module 2 and a fan module 3.

[0042] The front face of the control module 1 comprises a millimeter wave radar module 11, an ambient light sensor 12 and a temperature and humidity sensor 13, and the back face of the control module 1 comprises an MCU module, a first CAN transceiver and a second CAN transceiver.

[0043] The ambient light sensor 12 is used for monitoring the ambient light intensity around the vehicle in real time, and the temperature and humidity sensor 13 is used for detecting the temperature and humidity in the headlamp in real time; the output ends of the ambient light sensor 12 and the temperature and humidity sensor 13 are connected with the input end of the millimeter wave radar module 11, and the ambient light sensor 12 and the temperature and humidity sensor 13 perform I2C communication with the millimeter wave radar module 11; in the embodiment, the temperature and humidity sensor 13 adopts HDC1080DMBR, and the ambient light sensor 12 adopts OPT4001DNPRQ1.

[0044] The millimeter wave radar module 11 communicates with the body controller through the first CAN transceiver, the output end of the millimeter wave radar module 11 is connected with the input end of the MCU module, and the millimeter wave radar module 11 is used for monitoring objects such as pedestrians and animals in the blind area of the vehicle field of view;

[0045] The MCU module communicates with the body controller through the second CAN transceiver, the output end of the MCU module is connected with the input end of the LED module 2 and the fan module 3, and the fan module 3 is used for heat dissipation of the headlamp;

[0046] In the embodiment, the millimeter wave radar module 11 and the MCU module can both communicate with the body controller, and the millimeter wave radar module 11 and the MCU module can also communicate with each other. When the first CAN transceiver is in a dormant state, the millimeter wave radar module 11 can communicate with the MCU module, and then communicate with the body controller through the second CAN transceiver, so as to realize the communication between the millimeter wave radar module 11 and the body controller; when the second CAN transceiver is in a dormant state, the MCU module can communicate with the millimeter wave radar module 11, and then communicate with the body controller through the first CAN transceiver, so as to realize the communication between the MCU module and the body controller.

[0047] As shown in Figure 4 , the millimeter wave radar module 11 of the embodiment includes a millimeter wave radar chip and an antenna;

[0048] The antenna includes three transmitting antennas and three receiving antennas, the antenna is connected with the input end of the millimeter wave radar chip, the millimeter wave radar chip communicates with the body controller through the first CAN transceiver, the output end of the ambient light sensor 12 and the temperature and humidity sensor 13 is connected with the input end of the millimeter wave radar chip, and the output end of the millimeter wave radar chip is connected with the input end of the MCU module, as shown in Figure 5 , the millimeter wave radar chip U1 of the embodiment adopts AWR1843ABGABLQ1 of TI.

[0049] As shown in Figure 4 , the MCU module of the embodiment includes an MCU chip, the MCU chip communicates with the body controller through the second CAN transceiver, the input end of the MCU chip is connected with the output end of the millimeter wave radar chip, the millimeter wave radar chip and the MCU module communicate through GPIO, and the output end of the MCU chip is connected with the input end of the LED module 2 and the fan module 3, as shown in Figure 6 , the MCU chip U2 of the embodiment adopts S32K144, as shown in Figure 9 , the first CAN transceiver U5 and the second CAN transceiver U6 of the embodiment both adopt TCAN1042.

[0050] AsFigure 4 As shown in the figure, the LED module 2 of the embodiment comprises an LED driving chip and an LED lamp group;

[0051] The input end of the LED driving chip is connected with the output end of the MCU chip;

[0052] The output end of the LED driving chip is connected with the LED lamp group;

[0053] The MCU chip controls the LED lamp group to turn on and off through the LED driving chip;

[0054] As shown in the figure, Figure 7 The LED driving chip U3 of the embodiment adopts TLD5097.

[0055] As shown in the figure, Figure 4 The fan module 3 of the embodiment comprises a fan driving chip and a fan, the input end of the fan driving chip is connected with the output end of the MCU module, and the output end of the fan driving chip is connected with the fan;

[0056] As shown in the figure, Figure 8 The fan driving chip U4 of the embodiment adopts DRV10975 of TI, the fan adopts BLDC fan SG40281B1 of Sunon, the temperature and humidity sensor 13 monitors the temperature data in the headlamp and sends the temperature data to the MCU chip, the MCU chip sends the temperature data to the fan driving chip U4 through I2C communication, and the fan driving chip U4 drives the fan to rotate and transmits the heat in the headlamp through the heat sink.

[0057] As shown in the figure, Figure 4 The headlamp of the embodiment further comprises a power module, and the power module comprises a first power module and a second power module;

[0058] The input end of the first power module is connected with the vehicle body power supply system, and the output end of the first power module supplies power for the millimeter wave radar chip;

[0059] The input end of the second power module is connected with the vehicle body power supply system, and the output end of the second power module supplies power for the MCU chip, the LED lamp group, the first CAN transceiver and the second CAN transceiver respectively.

[0060] As shown in the figure, Figure 4 The first power module of the embodiment comprises a first DCDC chip, a second DCDC chip, a third DCDC chip and a first LDO chip, as shown in the figure, Figure 10As shown, the first DCDC chip U7 of the embodiment adopts LM61460, which is used for converting the 12V power supply of the vehicle body into a 5V power supply, the second DCDC chip U8 adopts LMS36x5, which is used for converting the 5V power supply into a 3.3V power supply, the third DCDC chip U9 adopts LP87702, which is used for converting the 3.3V power supply into a 1.8V and 1.2V power supply, and the first LDO chip U10 adopts TPS7A5301, which is used for converting the 1.2V power supply into a 1V power supply.

[0061] The input end of the first DCDC chip is connected with the vehicle body power supply system, and the output end of the first DCDC chip is connected with the input end of the second DCDC chip;

[0062] The output end of the second DCDC chip is connected with the input end of the third DCDC chip, the output end of the third DCDC chip is used for supplying power to the millimeter wave radar chip, and the output end of the third DCDC chip is connected with the input end of the first LDO chip;

[0063] The output end of the first LDO chip is used for supplying power to the millimeter wave radar chip.

[0064] As shown in the figure, Figure 4 The second power supply module of the embodiment includes a second LDO chip;

[0065] The input end of the second LDO chip is connected with the vehicle body power supply system, and the output end of the second LDO chip is used for supplying power to the MCU chip, the LED lamp group, the first CAN transceiver and the second CAN transceiver respectively;

[0066] As shown in the figure, Figure 11 The second LDO chip U11 of the embodiment adopts TPS76650, which is used for converting the 12V power supply of the vehicle body into a 5V power supply.

[0067] The working principle of the utility model is as follows:

[0068] After the vehicle starts, the control module 1 starts running, the temperature and humidity sensor 13 monitors the temperature and humidity in the headlamp in real time, the ambient light sensor 12 monitors the ambient light intensity around the vehicle in real time, and the millimeter wave radar module 11 also synchronously monitors the moving object in the visual field blind area.Combining the current ambient light intensity, it tells the driver whether the headlamp needs to be turned on, and after driving for a period of time, when the vehicle is in the parking state, it is suggested whether the driver needs to turn off the headlamp in combination with the current ambient light intensity. Figure 11 As shown in the figure, when the vehicle turns left or right, the millimeter wave radar module 11 will monitor the moving object in the visual field blind area in advance and issue an object approach warning to the driver, at this time, if the high beam in the headlamp has been turned on, the LED module 2 will be controlled to switch to the low beam to avoid the interference of the high beam on the pedestrians.

[0069] The temperature and humidity sensor 13 integrated in the headlamp can monitor the temperature and humidity in the headlamp in real time, and if the temperature and humidity exceeds the early warning value for a long time, the driver will be warned that the headlamp is abnormal and needs to be checked. The fan speed is controlled according to the temperature in the headlamp detected by the temperature and humidity sensor 13 to realize the heat dissipation of the headlamp, thereby avoiding the risk of headlamp failure in advance. The ambient light sensor 12 integrated in the headlamp can monitor the ambient light intensity around the vehicle in real time, and according to the ambient light intensity, the driver is suggested to turn off or turn on the headlamp, thereby avoiding unnecessary turning on of the headlamp, prolonging the service life of the headlamp and the storage battery, and avoiding the danger of not turning on the headlamp in time. The millimeter wave radar integrated in the headlamp realizes the linkage of the headlamp and the millimeter wave radar, removes the shell, terminal and other structural parts, reduces the cost, does not need to occupy the extra space of the vehicle, the MCU module and the millimeter wave radar module 11 are integrated on one board, and the communication interference between the MCU module and the millimeter wave radar module 11 is reduced.

[0070] The above specific embodiments further illustrate the technical problems, technical solutions and beneficial effects solved by the utility model, and it should be understood that the above is only a specific embodiment of the utility model and is not used to limit the utility model. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A multifunctional integrated headlamp, characterized by comprising: It includes a control module (1), an LED module (2) and a fan module (3); The control module (1) includes a millimeter wave radar module (11), an ambient light sensor (12), a temperature and humidity sensor (13), an MCU module, a first CAN transceiver and a second CAN transceiver; The ambient light sensor (12) is used for real-time monitoring of the ambient light intensity around the vehicle, and the temperature and humidity sensor (13) is used for real-time detection of the temperature and humidity in the headlamp, and the output terminals of the ambient light sensor (12) and the temperature and humidity sensor (13) are connected with the input terminal of the millimeter wave radar module (11); The millimeter wave radar module (11) communicates with the vehicle body controller through the first CAN transceiver, and the output terminal of the millimeter wave radar module (11) is connected with the input terminal of the MCU module, and the millimeter wave radar module (11) is used for monitoring the objects in the blind area of the vehicle vision field; The MCU module communicates with the vehicle body controller through the second CAN transceiver, and the output terminal of the MCU module is connected with the input terminal of the LED module (2) and the fan module (3), and the fan module (3) is used for heat dissipation of the headlamp; The fan module (3) includes a fan driving chip and a fan, and the input terminal of the fan driving chip is connected with the output terminal of the MCU module, and the output terminal of the fan driving chip is connected with the fan.

2. The multifunctional integrated headlamp according to claim 1, characterized by The millimeter wave radar module (11) includes a millimeter wave radar chip and an antenna; The antenna is connected with the input terminal of the millimeter wave radar chip, the millimeter wave radar chip communicates with the vehicle body controller through the first CAN transceiver, the output terminals of the ambient light sensor (12) and the temperature and humidity sensor (13) are connected with the input terminal of the millimeter wave radar chip, and the output terminal of the millimeter wave radar chip is connected with the input terminal of the MCU module.

3. The multifunctional integrated headlamp according to claim 2, characterized by The MCU module includes an MCU chip, the MCU chip communicates with the vehicle body controller through the second CAN transceiver, the input terminal of the MCU chip is connected with the output terminal of the millimeter wave radar chip, and the output terminal of the MCU chip is connected with the input terminal of the LED module (2) and the fan module (3).

4. The multifunctional integrated headlamp according to claim 3, characterized by The LED module (2) includes an LED driving chip and an LED lamp group; The input terminal of the LED driving chip is connected with the output terminal of the MCU chip; The output terminal of the LED driving chip is connected with the LED lamp group.

5. The multifunctional integrated headlamp according to claim 4, characterized by It also includes a power module, and the power module includes a first power module and a second power module; The input terminal of the first power module is connected with the vehicle body power supply system, and the output terminal of the first power module supplies power for the millimeter wave radar chip; The input terminal of the second power module is connected with the vehicle body power supply system, and the output terminal of the second power module supplies power for the MCU chip, the LED lamp group, the first CAN transceiver and the second CAN transceiver respectively.

6. The multifunctional integrated headlamp according to claim 5, characterized by The first power module includes a first DCDC chip, a second DCDC chip, a third DCDC chip and a first LDO chip; The input terminal of the first DCDC chip is connected with the vehicle body power supply system, and the output terminal of the first DCDC chip is connected with the input terminal of the second DCDC chip; An output end of the second DCDC chip is connected with an input end of a third DCDC chip, an output end of the third DCDC chip supplies power for a millimeter wave radar chip, and the output end of the third DCDC chip is connected with an input end of a first LDO chip; The output end of the first LDO chip supplies power for the millimeter wave radar chip.

7. The multifunctional integrated headlamp according to claim 6, characterized by The second power supply module comprises a second LDO chip; An input end of the second LDO chip is connected with a vehicle body power supply system, and output ends of the second LDO chip supply power for the MCU chip, the LED lamp group, the first CAN transceiver and the second CAN transceiver respectively.

Images