基于CAN总线的行车记录仪设计

摘要

为保障行车安全,设计了一种基于CAN总线通信技术的行车记录仪.该行车记录仪硬件部分选用STM32F105V8微处理器实现了对车辆各种状态信息的接收,并选用Hi3520D多媒体芯片,实现了对车辆四周环境信息的视频监控,软件部分基于嵌入式Linux平台,实现了视频存储、视频回放等功能.长期试验证明,该系统可有效监控行车过程中的各种信息,稳定可靠,有较高的应用价值.%In order to ensure traffic safety,a vehicle traveling data recorder based on CAN bus communication technology was designed.In the hardware part of the vehicle,the STM32F105V8 microprocessor was used to receive various states of vehicle information,and the Hi3520D multimedia chip was chose to video monitoring the vehicle surroundings information.This technology realized the video storage,video playback and other functions based on embedded Linux platform on the software.The long term results show that,this design can effectively monitor all kinds of information in the process of driving and has higher application value.