Vehicle lighting device adaptive to ramp and based on closed-loop control and control method of vehicle lighting device
A vehicle lighting and self-adaptive technology, applied in vehicle components, signaling devices, transportation and packaging, etc., can solve problems such as unpredictable measurement, and achieve the effect of maintaining accuracy, improving driving safety, and ensuring accuracy.
Active Publication Date: 2019-05-17
WUHAN UNIV OF TECH
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Problems solved by technology
[0003] For slope angle measurement, various existing methods require the vehicle to go uphill to complete the measurement, and it is impossible to perform predictive measurement before going uphill
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[0024] A control method for a vehicle lighting device adaptive to a slope, comprising: collecting an image within the illumination range of a vehicle light on a slope through an image acquisition device; Distance measurement signal points; Calculate the distance between each distance measurement signal point and the vehicle through the fixed-point distance measurement module of the image processor; Measure the angle δ formed between the upper boundary of the light emitted by the car lamp and the reference plane; the vertical height of the ranging signal point; calculate the ramp angle according to the vertical height of the ranging signal point and the distance between the ranging signal point and the vehicle; adjust the irradiation angle of the vehicle light based on the ramp angle.
[0025] Wherein, marking the ranging signal point in the image includes two modes:
[0026] Mode 1 is applicable to the environment where the low beam is turned on. The specific solution is: perf...
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The invention relates to a vehicle lighting device adaptive to a ramp and based on closed-loop control and a control method of the vehicle lighting device. The device comprises an image acquisition device, an image processor, an attitude monitoring device, a processor and an executing device, wherein the image acquisition device is used for acquiring an image of the illumination range of vehicle lamps on the front ramp before the vehicle enters the ramp; the image processor comprises a distance measuring signal point marking module and a fixed-point distance measuring module, the distance measuring signal point marking module is used for marking distance measuring signal points in the image, and the fixed-point distance measuring module is used for calculating the distance between each distance measuring signal point and the vehicle; the attitude monitoring device is used for measuring an angle delta between the upper boundary of the emergent light of the vehicle lamps and a referenceplane; the processor calculates the angle of the ramp according to the angle delta, the vertical heights of the distance measuring signal points and the distance between each distance measuring signalpoint and the vehicle, and generates a vehicle lamp attitude control command according to the angle of the ramp; and the executing device is used for adjusting the attitude of the vehicle lamps according to the vehicle lamp attitude control command.
Description
technical field [0001] The invention belongs to the technical field of automobile lighting, and in particular relates to an adaptive slope vehicle lighting device and a control method thereof. Background technique [0002] At present, traffic accidents caused by poor lighting at night account for as high as 40% of traffic accidents. Among them, the slope road section that is prone to blind spots is a high-incidence area for accidents. There are two main reasons: one is that the vehicle’s illumination range becomes shorter when the vehicle goes uphill, and it is impossible to accurately judge the oncoming vehicle; When driving on the road, the driver is easily dazzled by the lights of oncoming vehicles. Therefore, it is necessary to measure the angle of the ramp, and then automatically adjust the range of lighting according to the angle of the ramp. [0003] For the slope angle measurement, the existing methods require the vehicle to go up the slope to complete the measurem...
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Inventor 吴友宇陈伟武洁姚鹏鹏何龙钦杨叶森汪宇龙黄立博钱坤魏来
Owner WUHAN UNIV OF TECH