Evaluation method for vehicle headlight

Abstract

The invention discloses an evaluation method for a vehicle headlight. The evaluation method includes obtaining the center of a to-be-evaluated vehicle and obtaining requirements for passing light level of the to-be-evaluated vehicle; establishing a coordinate system by taking the center of the to-be-evaluated vehicle as the origin; determining a first passing light detection zone, a second passing light detection zone and a third passing light detection zone according to the requirements for passing light level; turning on the dipped headlight of the to-be-evaluated vehicle and detecting the passing light luminance of the first passing light detection zone, the second passing light detection zone and the third passing light detection zone; and judging whether the level of the dipped headlight meets the requirements for passing light level or not according to the passing light luminance of the first passing light detection zone, the second passing light detection zone and the third passing light detection zone. According to the invention, lighting patterns of distance light and passing light are guaranteed and width and distance of distance light and passing light are ensured. Besides, evaluation requirements of the light are made in the pre-design phase and actions can be taken to meet the requirements during the design process, so that custom complains in the later phase can be avoided.

Description

technical field [0001] The invention relates to the technical field of vehicle detection, in particular to a method for evaluating vehicle headlights. Background technique [0002] In the related technology, since the national standard only specifies the quantification of points for the far and near light distribution of vehicles, for example, as shown in Figure 1(a) and Figure 1(b), Figure 1(a) is the national standard for vehicles The illuminance requirements of the low beam headlights, which stipulate the range of illuminance values ​​in individual points or areas when the low beam headlights are distributed; Figure 1(b) shows the illuminance requirements of the national standard for the high beam headlights of vehicles, which stipulates the distribution The range of illuminance values ​​in individual points or areas in light time, so the evaluation of the far and low beams of vehicle headlights can only be judged from the quantified illuminance values, while the illumina...

AI Technical Summary

Problems solved by technology

[0003] However, because the national standard has only a few points for the illuminance requirements of the high beam and low beam, the high beam and low beam of the vehicle headlights have a poor light pattern on the road surface, the width is not enough, the brightness is not enough, and the light is not far enough. , thus bringing safety hazards to drivers driving at night and causing customer dissatisfaction

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