Development Of Adaptive Lighting System In Automobile

Traditional automotive lighting system is mainly composed of three parts: Frontlighting System, signal lighting, In-car lighting. With the development of science and technology, Traditional automotive lighting system has developed a lot. However, there are still many problems in traditional automotive lighting system in actual use. Traffic-safety is still a big problem when the road surrounding and driving condition are complex. Therefore, how to make the traditional automotive lighting intelligent, driving safer and more comfortable is becoming a very urgent issue with practical significance.Through the analysis of the existing smart lighting program, this subject brings forward a vehicle adaptive lighting program which can realize four main functions: bad weather lighting, move with the turn, adjust with the auto-body tilt and fault diagnosis. Compared with the programs of the major car manufacturers, the system integrates more intelligent lighting designs and the function is more comprehensive. The program is a low-cost and low-power system which is based on the single-chip AT89S51, and it's more cost-effective.This paper introduced the beginning, developing and application status of the vehicle adaptive lighting system (ALS), then analyzed the constitution, function and work theory. After the system requirements are analyzed in detail, the vehicle adaptive lighting system based on the single-chip AT89S51 was designed. The system includes the modules of data collection-process, motor assembly, fault diagnosis and the sensors. In the section about hardware, there are the detail designs of ALS master controller and peripheral circuits, power module, implementation module, sensor module, motor drive circuit and fault detection circuit. In the section about software, the overall system software processes and the software algorithm module was designed, both realizes a complete auto-body lighting system.After the ALS test result, this system can make sure to provide drivers the best lighting in many kinds of conditions. And the system can discover all kinds of faults of the vehicle lights.At the end of the article, there is summarize for the topic, there are also some questions which haven't solved yet, I think they could be the ideas for improving the system in the future.