研究目的
To propose a novel Hardware-in-the-Loop (HiL)-simulation of the light distribution of matrix-headlights to reduce the duration and number of real night test drives.
研究成果
The presented HiL-simulation for automotive headlights is real-time capable and the light distribution matches in intensity and color the data measured by a goniophotometer. This is evaluated with a real matrix-headlight as the reference. Future steps include finding an automatic white balance method and evaluating a multi-camera system for possible increase in accuracy and resolution.
研究不足
The approach requires initial calibration and adjustment of camera parameters for optimal performance. The system's accuracy is dependent on the quality of the camera and goniophotometer data.
1：Experimental Design and Method Selection:
The approach involves using machine vision cameras to measure and digitize the light distribution of a real matrix-headlight in the lab, comparing it with absolute intensity-data from a goniophotometer to determine optimal transformation parameters. A virtual testing simulation visualizes the digitized light distribution considering actual driving dynamics.
2：Sample Selection and Data Sources:
A real matrix-headlight with 84 pixels and its measured intensity distribution is used as the reference.
3：List of Experimental Equipment and Materials:
Machine vision cameras, goniophotometer, real matrix-headlight.
4：Experimental Procedures and Operational Workflow:
The calibration process compares the light distribution measured by the camera with the goniophotometer data, minimizing the error to determine optimal transformation parameters. The HiL-simulation generates control data for the real headlight.
5：Data Analysis Methods:
The system's real-time capability and the match of the light distribution in the simulation to the original headlight in intensity and color are evaluated.
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