阅读说明：本技术 车灯控制系统、方法及车辆 (Vehicle lamp control system and method and vehicle ) 是由 郑代顺 何锡源 饶汉鑫 李万丰 赖祯昌 谢东 刘红举 吴恭辉 黄启赵 于 2021-07-19 设计创作，主要内容包括：本申请涉及一种车灯控制系统、方法及车辆,包括信号采集模块以及车灯控制模块,信号采集模块设置于车辆,信号采集模块连接车灯控制模块,车灯控制模块连接车辆的车灯；信号采集模块采集环境亮度数据、车距数据、方向盘转角数据以及车身高度数据并发送至车灯控制模块；车灯控制模块根据环境亮度数据控制车灯的开闭状态；车灯控制模块根据车距数据控制车灯的工作模式；车灯控制模块根据方向盘转角数据控制车灯的横向照射角度；车灯控制模块根据车身高度数据控制车灯的纵向照射角度,实现车前大灯的远近光自动开启及切换,防止引起行人及对向车辆驾驶人员眩目,还能在车辆驶入弯道时给弯道提供足够的照明,消除存在的暗区,提高行车安全。(The application relates to a car light control system, a car light control method and a car, and the car light control system comprises a signal acquisition module and a car light control module, wherein the signal acquisition module is arranged on the car and is connected with the car light control module; the signal acquisition module acquires environment brightness data, vehicle distance data, steering wheel corner data and vehicle height data and sends the data to the vehicle lamp control module; the vehicle lamp control module controls the on-off state of the vehicle lamp according to the environment brightness data; the vehicle lamp control module controls the working mode of the vehicle lamp according to the vehicle distance data; the car light control module controls the transverse irradiation angle of the car light according to the steering wheel corner data; the car light control module controls the longitudinal irradiation angle of the car light according to the car height data, realizes the automatic opening and switching of the high beam and the low beam of the car headlight, prevents pedestrians and oncoming car drivers from dazzling, can provide enough illumination for the curve when the car enters the curve, eliminates the dark space, and improves the driving safety.)

1. A vehicle lamp control system, comprising: the signal acquisition module is arranged on a vehicle and is connected with the vehicle lamp control module, and the vehicle lamp control module is connected with a vehicle lamp of the vehicle;

the signal acquisition module acquires environment brightness data, vehicle distance data, steering wheel corner data and vehicle height data and sends the environment brightness data, the vehicle distance data, the steering wheel corner data and the vehicle height data to the vehicle lamp control module;

the car light control module controls the on-off state of the car light according to the environment brightness data; the car light control module controls the working mode of the car light according to the car distance data; the car light control module controls the transverse illumination angle of the car light according to the steering wheel corner data; and the car light control module controls the longitudinal irradiation angle of the car light according to the car height data.

2. The vehicle lamp control system according to claim 1, further comprising a signal transmission module, wherein the signal acquisition module is connected to the vehicle lamp control module through the signal transmission module.

3. The vehicle lamp control system according to claim 2, wherein the signal transmission module comprises a CAN controller, a first CAN transceiver and a second CAN transceiver, the CAN controller is connected with the signal acquisition module and the first CAN transceiver, the first CAN transceiver is connected with the second CAN transceiver through a CAN bus, and the second CAN transceiver is connected with the vehicle lamp control module.

4. The vehicle lamp control system according to claim 3, wherein the signal acquisition module comprises a sensor component, a conditioning circuit, a digital-to-analog conversion circuit and a sensor control chip, the sensor component is arranged on the vehicle, the sensor component is connected with the conditioning circuit, the conditioning circuit is connected with the digital-to-analog conversion circuit, the digital-to-analog conversion circuit is connected with the sensor control chip, and the sensor control chip is connected with the CAN controller.

5. The vehicle light control system according to claim 4, wherein the sensor assembly includes an ambient light sensor, a vehicle distance sensor, a steering wheel angle sensor, and a vehicle height sensor provided to the vehicle.

6. The vehicle lamp control system according to claim 3, wherein the vehicle lamp control module comprises a main control unit, a driving circuit and an adjusting motor, the main control unit connects the second CAN transceiver with the driving circuit, the driving circuit connects the adjusting motor with the vehicle lamp, and the adjusting motor connects the vehicle lamp.

7. The vehicle lamp control system according to claim 6, wherein the driving circuit includes an angle driving circuit and a vehicle lamp driving circuit, the angle driving circuit connects the main control unit and the adjustment motor, and the vehicle lamp driving circuit connects the main control unit and the vehicle lamp.

8. The lamp control system of claim 7, wherein the adjustment motors comprise a horizontal adjustment stepper motor and a vertical adjustment stepper motor, each connected to the angle drive circuit and the lamp, respectively.

9. A vehicle lamp control method, implemented based on the vehicle lamp control system according to any one of claims 1 to 8, comprising:

receiving environment brightness data, vehicle distance data, steering wheel corner data and vehicle height data acquired by a signal acquisition module;

controlling the on-off state of the vehicle lamp according to the environment brightness data;

controlling the working mode of the car lamp according to the car distance data;

controlling the transverse irradiation angle deflection of the car light according to the steering wheel corner data;

and controlling the longitudinal irradiation angle deflection of the car lamp according to the car body height data.

10. A vehicle characterized by comprising a lamp and a lamp control system according to any one of claims 1 to 8.

Technical Field

The present disclosure relates to a vehicle lamp control system, and more particularly, to a vehicle lamp control system, a vehicle lamp control method, and a vehicle.

Background

With the improvement of economic level, the automobile keeping quantity in China is increasingly improved. When a consumer purchases a vehicle, the vehicle lights required for driving at night become a key factor of increasing concern in terms of driving safety. The traditional headlamp comprises a high beam and a low beam, and the front irradiation range is adjusted by switching the high beam and the low beam, so that the visual field range of a driver can be adjusted at night.

However, in the prior art, the switching of the high beam and the low beam is mostly manually adjusted by the driver, which not only disperses the attention of the driver, but also causes dazzling of the driver and the pedestrians when the driver meets the vehicle or encounters the pedestrians if the high beam is not switched to the low beam in time. In addition, when the vehicle enters a curve, the conventional automobile lamp cannot provide enough illumination for the curve, and a dark space for illumination exists, so that the driving safety is influenced.

Disclosure of Invention

Therefore, it is necessary to provide a vehicle lamp control system, a vehicle lamp control method and a vehicle to solve the above problems that the far and near lights are not switched timely to cause glare and a curve cannot provide enough illumination.

A vehicle light control system comprising: the signal acquisition module is arranged on a vehicle and is connected with the vehicle lamp control module, and the vehicle lamp control module is connected with a vehicle lamp of the vehicle;

the signal acquisition module acquires environment brightness data, vehicle distance data, steering wheel corner data and vehicle height data and sends the environment brightness data, the vehicle distance data, the steering wheel corner data and the vehicle height data to the vehicle lamp control module;

the car light control module controls the on-off state of the car light according to the environment brightness data; the car light control module controls the working mode of the car light according to the car distance data; the car light control module controls the transverse illumination angle of the car light according to the steering wheel corner data; and the car light control module controls the longitudinal irradiation angle of the car light according to the car height data.

In one embodiment, the vehicle lamp control system further comprises a signal transmission module, and the signal acquisition module is connected with the vehicle lamp control module through the signal transmission module.

In one embodiment, the signal transmission module comprises a CAN controller, a first CAN transceiver and a second CAN transceiver, the CAN controller is connected with the signal acquisition module and the first CAN transceiver, the first CAN transceiver is connected with the second CAN transceiver through a CAN bus, and the second CAN transceiver is connected with the car light control module.

In one embodiment, the signal acquisition module comprises a sensor component, a conditioning circuit, a digital-to-analog conversion circuit and a sensor control chip, the sensor component is arranged on a vehicle and connected with the conditioning circuit, the conditioning circuit is connected with the digital-to-analog conversion circuit, the digital-to-analog conversion circuit is connected with the sensor control chip, and the sensor control chip is connected with the CAN controller.

In one embodiment, the sensor assembly comprises an ambient light sensor, a vehicle distance sensor, a steering wheel angle sensor and a vehicle height sensor which are arranged on the vehicle.

In one embodiment, the car lamp control module comprises a main control unit, a driving circuit and an adjusting motor, the main control unit is connected with the second CAN transceiver and the driving circuit, the driving circuit is connected with the adjusting motor and the car lamp, and the adjusting motor is connected with the car lamp.

In one embodiment, the driving circuit includes an angle driving circuit and a car lamp driving circuit, the angle driving circuit is connected to the main control unit and the adjustment motor, and the car lamp driving circuit is connected to the main control unit and the car lamp.

In one embodiment, the adjusting motor comprises a horizontal adjusting stepping motor and a vertical adjusting stepping motor, and the horizontal adjusting stepping motor and the vertical adjusting stepping motor are respectively connected with the angle driving circuit and the vehicle lamp.

In one embodiment, a vehicle lamp control method is provided, which is implemented based on the vehicle lamp control system, and includes:

receiving environment brightness data, vehicle distance data, steering wheel corner data and vehicle height data acquired by a signal acquisition module;

controlling the on-off state of the vehicle lamp according to the environment brightness data;

controlling the working mode of the car lamp according to the car distance data;

controlling the transverse irradiation angle deflection of the car light according to the steering wheel corner data;

and controlling the longitudinal irradiation angle deflection of the car lamp according to the car body height data.

In one embodiment, a vehicle is provided, which comprises a vehicle lamp and the vehicle lamp control system.

According to the car light control system, the car distance data, the steering wheel corner data and the car body height data are collected through the signal collection module and sent to the car light control module, the car light control module automatically controls the on-off state, the working mode and the irradiation angle of the car lights, the automatic opening and switching of the high beam and the low beam of the car headlights are well achieved, pedestrians and dazzling of drivers of opposite cars are prevented, enough illumination can be provided for a curve when the car enters the curve, the dark space is eliminated, and the driving safety is improved.

Drawings

FIG. 1 is a system block diagram of a vehicle light control system in one embodiment;

FIG. 2 is a block diagram of a steering wheel angle sensor in one embodiment;

FIG. 3 is a flow chart of a vehicle light control method according to an embodiment;

FIG. 4 is a schematic diagram of an LED array for a vehicle lamp according to an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. The first resistance and the second resistance are both resistances, but they are not the same resistance.

It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

In one embodiment, there is provided a lamp control system applied to a headlamp of a vehicle, as shown in fig. 1, including: the system comprises a signal acquisition module 110 and a car light control module 130, wherein the signal acquisition module 110 is arranged on a vehicle, the signal acquisition module 110 is connected with the car light control module 130, and the car light control module 130 is connected with a car light of the vehicle; the signal acquisition module 110 acquires environment brightness data, vehicle distance data, steering wheel corner data and vehicle height data and sends the data to the vehicle lamp control module 130; the vehicle lamp control module 130 controls the on-off state of the vehicle lamp according to the environment brightness data; the vehicle light control module 130 controls the working mode of the vehicle light according to the vehicle distance data; the car light control module 130 controls the transverse illumination angle of the car light according to the steering wheel corner data; the lamp control module 130 controls the longitudinal irradiation angle of the lamp according to the body height data.

Specifically, the signal collection module 110 collects vehicle condition data such as ambient brightness data, vehicle distance data, steering wheel angle data, and vehicle height data, performs digital-to-analog conversion, and then gathers and sends the vehicle condition data to the vehicle lamp control module 130, and the vehicle lamp control module 130 controls the vehicle lamp to complete the operation after determining according to the vehicle condition data, so as to better provide night illumination for the vehicle.

The signal acquisition module 110 is disposed at an outer side of a vehicle body of the vehicle or transmits environmental brightness data acquired at a position where the vehicle can sense external environmental changes to the vehicle lamp control module 130. The lamp control module 130 compares the received ambient brightness data with a preset brightness threshold to control the on/off state of the lamp. Specifically, the judgment manner may be that the preset brightness threshold includes a minimum brightness threshold and a maximum brightness threshold, when the ambient brightness data is less than the minimum brightness threshold, the car light control module 130 controls to turn on the car light, and when the ambient brightness data is greater than the maximum brightness threshold, the car light control module 130 controls to turn off the car light. The preset brightness threshold is not unique in setting mode and size, and can be set according to actual requirements without limitation.

Further, the signal collecting module 110 is disposed at a position on the front side of the vehicle to collect the vehicle distance data of the oncoming vehicle or the leading vehicle, and transmit the vehicle distance data to the vehicle light control module 130. The lamp control module 130 compares the received vehicle distance data with a preset vehicle distance threshold value, and controls the working mode of the vehicle lamp. Specifically, the working modes of the lamps comprise a high beam mode and a low beam mode, when the distance data is less than a preset distance threshold value, the working mode of the lamps is controlled to be the low beam mode, and when the distance data is greater than the preset distance threshold value, the working mode of the lamps is controlled to be the high beam mode. The preset vehicle distance threshold value is not unique in setting mode and size, can be set according to actual requirements, and is not limited by the setting mode and the size.

Further, the signal collection module 110 is disposed on a steering wheel rotating shaft of the vehicle to collect steering wheel rotation angle data of the vehicle and send the steering wheel rotation angle data to the vehicle light control module 130, the vehicle light control module 130 determines a position of a middle shaft of the steering wheel, a rotation direction, a rotation angle and a rotation speed according to the steering wheel rotation angle data, and calculates a deflection angle of the vehicle wheel according to a corresponding relationship between the rotation angle of the steering wheel and the deflection angle of the vehicle wheel, so as to control a transverse irradiation angle of the vehicle light. For example, assuming that the steering wheel of the vehicle is rotated from a neutral position, the maximum rotation angle is one and a half turns to two and a half turns, corresponding to a yaw angle of the wheels of about 40-42 °. Then, in this embodiment, assuming that the maximum rotation angle of the steering wheel of the vehicle is two turns, i.e. 720 °, corresponding to the deflection angle of the wheel being about 42 °, when the steering wheel rotates clockwise one turn, i.e. 360 °, the car light control module 130 will calculate that the wheel has deflected 21 ° to the right, and then issue a deflection command to drive the car lights to also deflect and illuminate 21 ° to the right laterally. The transverse irradiation angle of the car light is an angle of the car light deflecting to the left or the right from the normal irradiation angle on the transverse axis. In addition, the corresponding relationship between the steering wheel rotation angle and the wheel deflection angle is not unique, and may be set according to the actual vehicle condition, and is not limited thereto.

Further, the signal collecting module 110 is disposed at a vehicle body position above front and rear wheels of the vehicle, collects vehicle body height data and transmits the vehicle body height data to the vehicle lamp control module 130, and the vehicle lamp control module 130 compares the received vehicle body height data with preset vehicle body height data to control a longitudinal irradiation angle of the vehicle lamp. The preset body height data may be body height data collected by the signal collection module 130 when the vehicle is running on a normal horizontal road, and the vehicle lamp control module 130 calculates the body height data to be in an initial horizontal plane. Then, when the vehicle travels on an uphill road section or a downhill road section, a pitch angle is generated between the horizontal plane calculated from the vehicle height data returned by the front and rear wheels and the initial horizontal plane, and the vehicle lamp control module 130 sends a deflection command according to the pitch angle to drive the vehicle lamp to adjust the longitudinal irradiation angle.

Above-mentioned car light control system, gather the ambient brightness data through the signal acquisition module, the car distance data, steering wheel corner data and automobile body height data and send to car light control module, the switching state of car light is controlled automatically to car light control module, the mode and shine the angle, the automatic far and near light of realizing car headlamp is opened and is switched over betterly, prevent to arouse pedestrian and to vehicle driver's dazzling, can also provide sufficient illumination for the bend when the vehicle drives into the bend, eliminate the dark space that exists, improve driving safety.

Optionally, in an embodiment, the signal acquisition module 110 acquires scene information related to the road environment, pedestrians, and vehicles, and sends the scene information to the vehicle light control module 130, and the vehicle light control module 130 obtains a comparison result according to the comparison between the scene information related to the preset scene, and projects warning information according to the comparison result.

Specifically, the relevant scene information collected by the information collection module 110 may include road environment information such as environment brightness information, climate information, road condition information, and the like, and other road environment information that may affect the safety of the vehicle driving at night, and may also include whether there is a pedestrian on the road surface, and may also include vehicle condition information of the vehicle and vehicle distance information between the vehicle and other vehicles.

Further, the car light control module 130 is preset with scene information corresponding to the lighting adjustment or projection information, for example, a scene with an ambient brightness lower than a preset minimum brightness needs to turn on the headlight for lighting; in the scene of extreme weather such as rainy and snowy days, warning information of the extreme weather needs to be projected; in the scene of road conditions such as large traffic flow, slow driving or abnormal parking, a tail lamp needs to be turned on, and double flashes or information projection needs to be carried out for warning; when a scene that pedestrians exist in front of the vehicle is detected, the tail lamp needs to be opened and warning information of the pedestrians is projected; when a scene that the vehicle is overspeed is detected, warning information of overspeed of the vehicle needs to be projected; the preset scenes can be set according to actual conditions and are not limited by the fact that scenes when the distance information between the vehicle and other vehicles is lower than the preset minimum distance, warning information with a relatively close distance needs to be projected, and the like.

Further, the car light control module 130 compares the relevant scene information acquired by the information acquisition module 110 with a preset scene to obtain a comparison result of the corresponding scene information, and projects warning information according to the comparison result, where the warning information is digital image information such as a number, a symbol, or an image corresponding to the scene. The warning information projection can be completed in a car light pixelization display mode, and can also be realized by adding a projection module. For example, the projection module may project images through a projection lens by a Digital Light Processing (DLP) method, and includes a Light source, a collimating lens, a DLP driving motor, and a projection lens, where Light emitted from the Light source enters the DLP lens through the collimating lens, the DLP lens reflects the Light to the projection lens for information projection, and the DLP driving motor is connected to the car Light control module 130 to receive a projection instruction and drive the DLP lens to flip and load projection information.

Optionally, the white light emitted from the light source may be filtered into red, green, and blue monochromatic lights by adding an RGB color wheel, and color warning information may be projected.

In this embodiment, through gathering the relevant information that the vehicle went under different scenes, throw out the information that has the warning effect after handling, can provide the warning of safe driving for the driver, also increased the variety of car light function.

In one embodiment, as shown in fig. 1, the vehicle lamp control system further includes a signal transmission module 120, and the signal collection module 110 is connected to the vehicle lamp control module 130 through the signal transmission module 120.

Specifically, the information collection module 110 performs data transmission with the vehicle lamp control module 130 through the CAN bus. After the information collection module 110 transmits the collected data to the signal transmission module 120 and converts the collected data into a CAN message, the vehicle lamp control module 130 may analyze and process the CAN message.

In one embodiment, as shown in fig. 1, the signal transmission module 120 includes a CAN controller, a first CAN transceiver and a second CAN transceiver, the CAN controller is connected to the signal acquisition module and the first CAN transceiver, the first CAN transceiver is connected to the second CAN transceiver through a CAN bus, and the second CAN transceiver is connected to the car light control module 130.

Specifically, the CAN controller receives data sent by the signal acquisition system 110, performs conversion processing according to a CAN bus protocol, and transmits the data to the first CAN transceiver, the first CAN transceiver converts a TTL signal of the CAN controller into a differential signal of a CAN bus, transmits the data to the second CAN transceiver through the CAN bus, and the second CAN transceiver converts the differential signal of the bus into a digital signal and transmits the digital signal to the car light control module 130.

In this embodiment, adopt the on-vehicle fieldbus CAN bus of vehicle as the carrier of data transmission, not only save the cost, and do not have electromagnetic interference, the security is higher.

In one embodiment, as shown in fig. 1, the signal acquisition module 110 includes a sensor component, a conditioning circuit, a digital-to-analog conversion circuit, and a sensor control chip, the sensor component is disposed on the vehicle, the sensor component is connected to the conditioning circuit, the conditioning circuit is connected to the digital-to-analog conversion circuit, the digital-to-analog conversion circuit is connected to the sensor control chip, and the sensor control chip is connected to the CAN controller.

Specifically, the conditioning circuit may include at least one of amplitude adjustment, an electric bridge, signal transformation, electrical isolation, impedance transformation, modulation and demodulation, linearization, and filtering circuits, and is configured to operate on the signal acquired by the sensor and convert the signal into a signal suitable for a subsequent control unit interface. The digital-to-analog conversion circuit is used for converting data of analog signals collected by the sensor assembly into digital signals which can be identified by the car light control module 130, and the specific circuit structure is not unique and can be set according to actual requirements.

Furthermore, the sensor control chip CAN collect data collected by the sensor assembly and transmit the data to the vehicle lamp control module 130 through the CAN bus, and CAN also perform digital compensation on the offset, sensitivity and nonlinearity of the sensor, and the specific model of the sensor control chip is not unique, CAN be selected according to actual requirements, and is not limited by the specific model.

In one embodiment, as shown in FIG. 1, the sensor assembly includes an ambient light sensor, a vehicle distance sensor, a steering wheel angle sensor, and a vehicle height sensor disposed in the vehicle.

Specifically, the sensor assembly comprises an ambient brightness sensor which is arranged on the outer side of the vehicle body of the vehicle or on the position where the external environment can be sensed to change in the vehicle, is used for detecting ambient brightness data, can be arranged on the back of a vehicle reflector and also can be arranged on the back of an in-vehicle rearview mirror, as long as the visual field of a driver is not influenced, the model and the number of the ambient brightness sensor are not unique, and the ambient brightness sensor can be set according to actual requirements.

The sensor assembly further comprises a vehicle distance sensor arranged at the front side of the vehicle, is used for detecting vehicle distance data between the vehicle and an opposite vehicle or a front vehicle, and can be arranged at a left headlamp of the vehicle or at the back of an interior rearview mirror. The vehicle distance sensor can adopt radar equipment such as laser radar, ultrasonic radar or millimeter wave radar, can also adopt infrared ranging sensor, and the quantity is not only, sets for according to actual demand.

The sensor assembly further comprises a steering wheel rotation angle sensor arranged on a rotating shaft of a steering wheel of the vehicle and used for detecting rotation angle data of the steering wheel of the vehicle so as to obtain a transverse deflection angle of a vehicle body of the vehicle. The steering wheel angle sensor can adopt a photoelectric encoder to convert the direction and angle parameters of the steering wheel during rotation into digital quantity. Specifically, as shown in fig. 2, slits are uniformly distributed on a code wheel concentric with a rotating shaft of a steering wheel, a baffle plate and two photodetectors are sequentially arranged on one side of the code wheel, wherein the slits with the same rule as that of the code wheel are also engraved on the baffle plate, the photodetectors can adopt photodiodes, and a light emitting diode light source opposite to the photodetectors is arranged on the other side of the code wheel. When the steering column of the steering wheel rotates, the coded disc fixed on the steering column rotates together with the slit, so that the light beam penetrating through the coded disc is interrupted, and a pulse signal is formed through the receiving of the photoelectric detector and the processing of the circuit board. When the steering wheel deviates from the middle position, the two photoelectric detectors can generate two paths of pulse signals with different phases, one path of pulse signal is in front when the steering wheel rotates clockwise, the other path of pulse signal is in front when the steering wheel rotates anticlockwise, and therefore the rotating direction of the steering wheel can be judged. The angle of the steering wheel is related to the number of pulses, the larger the angle of the steering wheel is, the more the number of generated pulses is, and the number of pulses can be collected through one counter. The photoelectric encoder transmits the collected steering wheel rotation angle data to the car light control module 130, and the car light control module 130 judges the rotation direction and the rotation angle of the steering wheel according to the phases and the number of the two paths of pulse signals.

The sensor assembly further comprises a vehicle body height sensor arranged at a vehicle body position above the front and rear wheels of the vehicle and used for detecting changes of front and rear suspensions of the vehicle and the height of the vehicle body. Specifically, 4 vehicle height sensors may be respectively disposed on the vehicle body above the front and rear 4 wheels, and then angle change data of a horizontal plane formed by connecting lines between the 4 vehicle height sensors may be used as a basis for detecting a change in vehicle body height. In addition, the change of an included angle between the vehicle and the reference surface can be obtained by adopting a levelness measuring sensor, and the purpose of detecting the height of the vehicle body can be achieved without being limited by the change.

In this embodiment, the signal acquisition module is used for acquiring the ambient brightness data, the vehicle distance data, the steering wheel angle data and the vehicle height data and sending the data to the vehicle lamp control module, so as to provide a basis for the automatic control of the vehicle lamp.

In one embodiment, as shown in fig. 1, the lamp control module 130 includes a main control unit, a driving circuit and an adjusting motor, the main control unit is connected to the second CAN transceiver and the driving circuit, the driving circuit is connected to the adjusting motor and the lamp, and the adjusting motor is connected to the lamp.

Specifically, the main control unit CAN include a main control chip and a peripheral circuit, the main control chip is connected with the second CAN transceiver to receive the ambient brightness data, the vehicle distance data, the steering wheel corner data and the vehicle height data collected by the sensor assembly, and after corresponding judgment is completed, a vehicle lamp control instruction is sent to the driving circuit, and the peripheral circuit is connected with the main control chip to ensure normal operation of the vehicle lamp control instruction. The main control chip can be completed by adopting a single chip microcomputer, or can be other control chips, and the control chip is not limited by the single chip microcomputer.

Further, when the driving circuit receives a car lamp control instruction sent by the main control chip, the driving circuit drives the adjusting motor to adjust the irradiation angle of the car lamp according to the car lamp control instruction, or directly drives the car lamp to switch the working state. When the received environment brightness data reach a preset brightness threshold value, the main control chip sends a car lamp switching instruction to the driving circuit, and the driving circuit directly drives the car lamp to switch the switching state; when the received vehicle distance data reach a preset vehicle distance threshold value, the main control chip sends a vehicle lamp switching instruction to the driving circuit, and the driving circuit directly drives the vehicle lamp to switch the working mode; when steering wheel corner data are received, the main control chip calculates the deflection angle of the vehicle body and sends a vehicle lamp transverse deflection instruction to the driving circuit, and the driving circuit drives the vehicle lamp to deflect at a transverse angle by adjusting the motor; when the height data of the vehicle body is received, the main control chip calculates the pitching angle of the vehicle body and sends a longitudinal deflection command of the vehicle lamp to the driving circuit, and the driving circuit drives the vehicle lamp to deflect at a longitudinal angle through the adjusting motor.

In one embodiment, as shown in fig. 1, the driving circuit includes an angle driving circuit and a lamp driving circuit, the angle driving circuit is connected with the main control unit and the adjustment motor, and the lamp driving circuit is connected with the main control unit and the lamp. Correspondingly, when the main control chip sends out a car lamp switching command and a car lamp switching command, the car lamp driving circuit directly drives the car lamp to complete switching of the switching state and the working mode. When receiving a transverse deflection instruction and a longitudinal deflection instruction of the car lamp sent by the main control chip, the angle driving circuit drives the car lamp to perform transverse angle deflection and longitudinal angle deflection by the adjusting motor.

In one embodiment, as shown in fig. 1, the adjustment motors include a horizontal adjustment stepping motor and a vertical adjustment stepping motor, each connected to the angle driving circuit and the vehicle lamp, respectively. Correspondingly, when a transverse vehicle lamp deflection instruction sent by the main control chip is received, the angle driving circuit drives the vehicle lamp to deflect transversely through the horizontal adjusting stepping motor; when a longitudinal deflection instruction of the car lamp sent by the main control chip is received, the angle driving circuit drives the car lamp to deflect at a longitudinal angle through the vertical adjustment stepping motor.

In this embodiment, the car light control module 130 automatically controls the on-off state, the working mode and the illumination angle of the car lights according to the acquired data, so as to better realize the automatic on-off and switching of the high and low beams of the car headlights, prevent dazzling of pedestrians and oncoming car drivers, provide sufficient illumination for the curve when the car drives into the curve, eliminate the dark space, and improve the driving safety.

In one embodiment, as shown in fig. 3, a vehicle lamp control method is provided, which is implemented based on the vehicle lamp control system, and includes:

step S201: and receiving the environmental brightness data, the vehicle distance data, the steering wheel corner data and the vehicle height data which are acquired by the signal acquisition module.

Specifically, the signal acquisition module comprises a sensor component, a conditioning circuit, an analog-to-digital conversion circuit and a sensor control chip, and can adopt the sensor component arranged on the vehicle to acquire vehicle condition data such as environment brightness data, vehicle distance data, steering wheel corner data and vehicle body height data, and the vehicle condition data is subjected to modulation and demodulation, filtering and digital-to-analog conversion processing and then is gathered and sent to the vehicle lamp control module.

Step S202: and controlling the opening and closing state of the vehicle lamp according to the ambient brightness data.

Specifically, the vehicle lamp control module compares the received ambient brightness data with a preset brightness threshold value to control the on-off state of the vehicle lamp. Specifically, the judgment mode may be that the preset brightness threshold includes a lowest brightness threshold and a highest brightness threshold, when the ambient brightness data is less than the lowest brightness threshold, the vehicle lamp control module controls to turn on the vehicle lamp, and when the ambient brightness data is greater than the highest brightness threshold, the vehicle lamp control module controls to turn off the vehicle lamp.

Step S203: and controlling the working mode of the vehicle lamp according to the vehicle distance data.

Specifically, the vehicle lamp control module compares the received vehicle distance data with a preset vehicle distance threshold value to control the working mode of the vehicle lamp. Specifically, the working modes of the lamps comprise a high beam mode and a low beam mode, when the distance data is less than a preset distance threshold value, the working mode of the lamps is controlled to be the low beam mode, and when the distance data is greater than the preset distance threshold value, the working mode of the lamps is controlled to be the high beam mode.

Step S204: and controlling the transverse irradiation angle deflection of the vehicle lamp according to the steering wheel rotation angle data.

Specifically, the car light control module judges the position of a middle shaft, the rotating direction, the rotating angle and the rotating speed of the steering wheel according to the steering wheel rotation angle data, and calculates the deflection angle of the wheel according to the corresponding relation between the rotating angle of the steering wheel and the deflection angle of the wheel, so as to control the transverse irradiation angle of the car light.

Step S205: and controlling the longitudinal irradiation angle deflection of the vehicle lamp according to the vehicle height data.

Specifically, the car light control module compares the received car height data with preset car height data, calculates a pitch angle generated by a car horizontal plane and an initial horizontal plane, and sends a deflection instruction according to the included angle to drive the car light to adjust a longitudinal irradiation angle so as to control the longitudinal irradiation angle of the car light.

In this embodiment, gather the ambient brightness data through the signal acquisition module, the car distance data, steering wheel corner data and automobile body height data and send to car light control module, the on-off state of car light, the mode and the angle of shining are controlled automatically to car light control module, the automatic opening of far and near light and the switching of car headlamp are realized better, prevent to arouse pedestrian and to dazzling vehicle driver, can also provide sufficient illumination for the bend when the vehicle drives into the bend, eliminate the dark space that exists, driving safety is improved.

In one embodiment, a vehicle is provided, comprising a vehicle lamp and the vehicle lamp control system described above.

Specifically, the car light control system controls the on-off state and the working mode of the car light through the car light driving circuit by acquiring brightness data, car distance data, steering wheel corner data and car body height data after judgment, and is connected to the car light through the angle driving circuit to adjust the transverse or longitudinal irradiation angle of the car light, so that the car light control system can prevent pedestrians and drivers of opposite vehicles from dazzling due to the delay of switching of far and near lights, can provide enough illumination for a curve when a car enters the curve, eliminate the dark space and improve the driving safety.

As shown in fig. 4, the car light is an LED array, the LED array is formed by arranging LEDs in a matrix, one end of each row of LEDs is connected to the same output lead for row output of the LED array, and the other end of each column of LEDs is connected to the same output lead for column output of the LED array. Correspondingly, the vehicle lamp driving circuit can comprise a row driving circuit and a column driving circuit, the row driving circuit is connected with the row output of the LED array, the column driving circuit is connected with the column output of the LED array, and the row output and the column output of the LED array are applied with electric signals to drive and light. The driving mode is not unique, a common cathode mode as shown in the left side of fig. 4 can be adopted, the driving circuit applies high level to the column output of the LED array, and applies low level to the row output of the LED array; the common anode mode shown in fig. 4 right can be used, and the driving circuit applies a low level to the column output of the LED array and a high level to the row output of the LED array.

Optionally, when the LED array is used as a headlight of a vehicle for illumination, the output mode of the high beam mode and the low beam mode is not unique, two different LED arrays may be used as the high beam or the low beam, and the switching between the high beam and the low beam may also be implemented by using different illumination intensities or different LED lighting quantities of the same LED array, which is not limited to this, as long as the light distribution design meets the standard requirements of the high beam and the low beam.

Optionally, the vehicle may further comprise an interaction device, the interaction device being connected to the vehicle light control system. Specifically, the interaction device can be arranged at a position such as an instrument panel, a center console or a steering wheel in the vehicle, and can comprise various modes such as voice input, touch screen input and/or key knob input, so that the active control input of the vehicle lamp is provided for a driver, and the driving safety is actively improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.