Motor vehicle headlamp luminous intensity distribution property self-adaption detection method based on camera method

Abstract

The invention discloses a motor vehicle headlamp luminous intensity distribution property self-adaption detection method based on camera method, which comprises the following steps of: performing quasi-positioning on far and near illumination; acquiring the light type of lower beams, acquiring the light type of upper beams; digitally processing light type data of upper and lower beams; judging whether the data meets a certain requirement or not; storing coordinates of movement compared with an initial position; storing images and the data; printing and displaying data; carrying out self-adaption sampling region adjustment; judging whether the sampling region surpasses a certain range or not; determining whether a product is qualified, and the like. By adopting the motor vehicle headlamp luminous intensity distribution property self-adaption detection method based on camera method, all possible measurement can be realized by performing one-step collimation of the motor vehicle headlamp luminous intensity distribution property self-adaption detection system in the prior art; and if a lamp at a collimation position is unqualified, other positions where the lamp is qualified can be searched through software without collimating or testing once again, so that the detection testing time can be shortened, and the possibility of passed inspection and the authority and accuracy of detection can be increased.

Description

technical field [0001] The invention belongs to the technical field of motor vehicle detection, in particular to an adaptive detection method for the light distribution performance of motor vehicle headlights based on a camera method. Background technique [0002] Before the motor vehicle leaves the factory, the quality of its upper parts must be tested. Among them, the detection of the light distribution performance of the motor vehicle headlight is a very important test item. figure 1 It is a structural schematic diagram of a currently commonly used camera-based light distribution performance detection system for motor vehicle headlights. figure 2 for figure 1 Shown is a block diagram of the detection device in the light distribution performance detection system of motor vehicle headlights based on the camera method. Such as figure 1 , figure 2 As shown, the light distribution performance detection system of motor vehicle headlamps based on the camera method includes...

AI Technical Summary

Problems solved by technology

[0004] But there is following problem in this motor vehicle headlamp light distribution performance detection system based on camera method: as mentioned above, aiming is very important when carrying out motorcycle headlight light distribution performance test, because most of qualified The light distribution performance of the motorcycle headlights is not obviously better than the standard, but there are a small number of specific qualified lighting positions within the allowable adjustment range, at which the product qualified results can be obtained

Therefore, if the product is unqualified once during the measurement according to the above method, it is necessary to re-align and inspect the product several times within the allowable adjustment range, which not only wastes a lot of time, but also may occur that although the product is qualified However, it was misjudged as an unqualified result because it failed to find a suitable aiming position during the test, so the accuracy was low

Images