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Dynamic test system for lighting performance of vehicle headlamp

A dynamic test, headlight technology, applied in the testing of machine/structural components, optical instrument testing, testing optical performance, etc., can solve the lighting effect deviation, light distribution standard can not meet the test requirements and differences of real vehicle lighting performance sexual issues

Inactive Publication Date: 2020-08-28
中汽院智能网联科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing national standards only restrict the lighting requirements of headlights from the perspective of light distribution, which is the technical requirement at the level of automotive lamp components.
After the car lights that meet the standards are installed on the vehicle, the lighting effect will be deviated due to factors such as installation position and dimming accuracy.
Especially in the actual use of the headlights, the vehicle is in motion. Due to the influence of the road surface, weather, and vehicle attitude, the dynamic performance and static illumination are quite different, which also leads to the fact that the existing light distribution standards cannot meet the requirements of real vehicles. Testing Requirements for Lighting Performance

Method used

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  • Dynamic test system for lighting performance of vehicle headlamp
  • Dynamic test system for lighting performance of vehicle headlamp
  • Dynamic test system for lighting performance of vehicle headlamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Such as figure 1 As shown, a dynamic test system for vehicle headlight lighting performance in this embodiment includes a motion information collection subsystem, an illuminance data collection subsystem, and a data analysis subsystem.

[0058] The motion information collection subsystem includes a GPS differential positioning module, a lane data collection module, a motion information collection module and a first GPS signal receiving module installed on the vehicle,

[0059] The illuminance data acquisition subsystem includes an illuminance measurement module, an illuminance data acquisition module and a second GPS signal receiving module.

[0060] The data analysis subsystem includes a validity determination module, an illumination data correction module, a vehicle distance calculation module and a data synchronization processing module.

[0061] The GPS differential positioning module is used to receive GPS satellite signals, calculate the distance correction numbe...

Embodiment 2

[0102] The difference between this embodiment and Embodiment 1 is that, when a dynamic test method of vehicle headlight lighting performance in this embodiment is applied to the curve test, a 100-150m long and 3.5-3.75m wide The curve of single-lane is as the track of test; In the present embodiment, it is specifically long 120m, wide 3.5m;

[0103] In step S3, such as Figure 5 As shown, the visibility reference measurement point is located on the boundary line of the lane, and the vertical distance from the ground is 25cm; the lateral distance between the glare reference measurement point and the lane line of the lane where the vehicle is located is 3.2-3.5cm, and 110cm from the ground; at the same time, the visibility reference measurement point , The X-axis coordinates of the glare reference measurement points projected on the ground are all 0. In this embodiment, the boundary line refers to the outermost drawn line of the single lane.

[0104] Such as Figure 6 As show...

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Abstract

The invention relates to the technical field of vehicle testing, and particularly discloses a dynamic test system for lighting performance of a vehicle headlamp. The dynamic test system comprises a motion information acquisition subsystem, an illuminance data acquisition subsystem and a data analysis subsystem, wherein the motion information acquisition subsystem is used for acquiring GPS time, position information of a vehicle and a pitch angle; the illuminance data acquisition subsystem is used for acquiring illuminance data of the vehicle headlamp at a preset illuminance data measurement point and GPS time; the data analysis subsystem is used for calculating a spacing distance between the front end of the vehicle and a coordinate origin in the testing process according to the preset coordinate origin and the position information of the vehicle, and recording GPS time; and the data analysis subsystem is further used for correcting the illuminance data according to the pitch angle, the spacing distance and the height difference data to obtain corrected illuminance data, and is further used for carrying out synchronous processing on the corrected illuminance data and the interval distance of the vehicle by taking the GPS time as a reference to generate a curve of illuminance changing along with the distance. By adopting the dynamic test system of the invention, the accuracy oflighting performance testing can be improved.

Description

technical field [0001] The invention relates to the technical field of vehicle testing, in particular to a dynamic testing system for the lighting performance of vehicle headlights. Background technique [0002] At present, more and more cars are considering the protection of occupants and pedestrians, especially at night or in poor light conditions, it becomes more difficult to know the road conditions, which is a test for drivers, and there are certain problems for pedestrians. risk. As the "eyes" of the car, headlights can improve the driving safety at night and make drivers more relaxed and comfortable when driving at night. For this reason, strict requirements are placed on the lighting performance of vehicle headlights. [0003] However, the existing national standards only restrict the lighting requirements of headlights from the perspective of light distribution, which is a technical requirement at the level of automotive lighting components. After the lights that ...

Claims

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Application Information

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IPC IPC(8): G01M11/06
CPCG01M11/067
Inventor 陈媛媛张强李朝斌陈涛邢春鸿李林张云飞
Owner 中汽院智能网联科技有限公司
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