An Angle Compensation Method for the Adaptive Driving Beam to Improve the System Response Performance

As a safety concern automotive technique, the Adaptive Driving Beam (ADB) system can avoid causing dazzling to the other drivers when using the high beams at night. The ADB system creates a specific light shape, which forms a shadow area for the preceding vehicle within the high beam illuminating area. Since the light shape of the high beams is determined by the traffic information gathered by the Intelligent Frontal Camera (IFC), there will be a inherent time consumption from IFC processing to a corresponding light shape output. This time consumption may cause an apparent delay to the light shape shifting when the target vehicle has a high transversal speed. An angle compensation method is proposed in this paper to neutralize the negative effect of this delay. The total transmission delay and the processing time of the ADB system is considered carefully, and a compensation angle is calculated according to the transversal angular velocity of the preceding target vehicle. By the help of the compensation method, the ADB system can react at a fast response speed and output a more accurate light shape for the preceding vehicles.