An Adaptive Driving Beam System with Compatibility to Different Pixel Matrix Beams

The Adaptive Driving Beam(ADB) is an intelligent driving assistance technique which is developed in recent years. The main function of ADB system is to automatically detect vehicles on the road by the intelligent camera, and forms a shadow area for the the target vehicle located in front of the vehicle which is using high beams. ADB system can help drivers to use high beams properly. The shadow area created by the ADB system can avoid generating dazzling to the drivers, hence the driving safety at night can be greatly improved. Considering the compatibility of the ADB technique, matrix LED systems with different pixel setting are discussed under an identical ADB control strategy. The angle relationships between the shadow area and the different matrix LED settings are analyzed and established respectively. Filtering method is introduced to smooth the output angles of the shadow area, which is used to eliminate the flickering of the LEDs. The hardware structure and software diagram of the ADB system are also discussed.