Method for determining road lighting range of front lighting lamp of automobile

Abstract

The invention provides a method for determining the road lighting range of a front lighting lamp of an automobile. The method comprises the steps that according to the design speed of roads of different grades or the vehicle running speed v, the vehicle braking distance s of straight roads, bends, crossroads and other working conditions at the speed is calculated; calculating an irradiation distance L and a unilateral irradiation width W of an illumination range of an illumination lamp at the front part of the vehicle under the working conditions of a straight road, a curve, a crossroad and the like, and taking the irradiation distance L and the unilateral irradiation width W as coordinate values of a rectangular plane coordinate system; further drawing and forming a minimum illumination range demand NURBS curve when the vehicle runs on a straight road, a curve and a crossroad respectively; and according to the minimum illumination range demand NURBS curve when the vehicle runs on a straight road, a curve and a crossroad respectively, fitting each section of curve to obtain the minimum road illumination range of the illumination lamp at the front part of the vehicle.

Description

technical field [0001] The invention relates to the lighting field of automobile lamps, in particular to a method for determining the road lighting range of automobile front lighting lamps. Background technique [0002] The front lighting fixtures of the car play an important role in road lighting at night, mainly including high beam lights, low beam lights, front fog lights, corner lights, etc. Illumination to help drivers spot road obstacles or pedestrians ahead so that they can take evasive or braking measures. Among them, the high beam and low beam functions are mandatory configuration requirements for cars, and can work alone to provide road range lighting; front fog lamps and corner lamps are optional configurations, which can be combined with high beam and low beam on vehicles with this configuration. The lights work together to provide road-wide lighting. [0003] There is currently no quantitative determination method for the road lighting range requirements of th...

AI Technical Summary

Problems solved by technology

However, this method does not consider the actual road characteristics, and the performance of different models is different. If the road lighting range of the lamp cannot be determined in combination with the braking performance of the vehicle, the light beam will not be able to irradiate the required area, and the optical utilization rate will be reduced. Obstacles take evasive measures, resulting in traffic accidents

[0004] The invention relates to a method for calculating the road lighting range of an automobile front lighting lamp, which can determine the road lighting range according to vehicle braking performance, road parameters and actual vehicle speed, effectively improve the light energy utilization efficiency of lamps, and reduce the probability of vehicle accidents. No related patents related to this invention

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