AFS系统主从ECU的LIN通讯优化研究  

Study on LIN Communication Optimizing of the Master-Slave ECU of AFS System

作　　者：王成志[1] 李建成[1] 张锐[1] 彭毅[1] 范多旺[1] 

机构地区：[1]兰州交通大学光电技术与智能控制教育部重点实验室,兰州730070

出　　处：《微处理机》2014年第4期52-55,58,共5页Microprocessors

基　　金：国家高科技研究发展计划(863计划)课题资助(2012AA040207)

摘　　要：智能化自适应前照灯系统(AFS)是汽车安全性和舒适性的重要指标之一。目前汽车AFS主要是利用单LIN总线通讯实现主ECU与从ECU的数据传输。该系统基本实现了前照灯的智能控制,但存在发送帧冗余、多从ECU之间数据干扰、实时响应慢等问题。在分析现有AFS系统的基础上,提出利用双LIN总线实现主从ECU通信的设计方案。实验证明,双LIN总线结构能够有效减少信号之间的干扰,通信过程稳定性高,实时调光效果好。The advanced front -lighting system （AFS）is important for safety and comfort of the automobile.Currently automotive AFS mainly uses single LIN to conduct data communication between the master ECU and slave ECU.The system basically realizes intelligent control for the headlamp,but there are some problems such as the redundant transmission frames,the interference of data between several slave ECUs and slow real -time response.The new system uses dual LIN bus to realize the communication between the master ECU and slave ECU by the analysis of the existing AFS system.The experimental results show that the dual LIN bus system can reduce the interference of data between several slave ECUs effectively,the communication process of the system is stabile and the real -time dimming response is effective.

关 键 词：智能化自适应前照灯系统 LIN 通讯 单片机 

分 类 号：TN919[电子电信—通信与信息系统]