基于CAN总线的行车记录仪设计_李俐.pdfVIP

( ) 计算机工程与设计 Computer Engineering and Design 5120 2009,30 22 计算机工程与设计 Computer Engineering and Design 嵌入式系统工程 基于CAN 总线的行车记录仪设计 1,2 1 李 俐 ， 谢显中 (1. 重庆邮电大学计算机科学与技术学院，重庆400065 ；2. 奇瑞汽车股份有限公司 精机公司产品研发部，安徽 芜湖24 1009) ( ) 摘 要：对基于CAN controller area network 总线的行车记录仪设计和实现进行了探讨，详细阐述了系统的整体结构、硬件电 路设计和软件设计流程。开发的行车记录仪用于在车辆行驶过程中实时采集和显示汽车CAN 总线数据信息，并将数据存储 在U 盘中，以U 盘为载体传输给PC 机，可运用PC 机上的软件对数据进行分析。该系统已成功应用于奇瑞汽车A5 车型，并 取得良好效果。 关键词：CAN 总线; 数据采集; 行车记录仪; CH375; USB 中图法分类号：TP2 16 文献标识码：A 文章编号：1000-7024 (2009) 22-5120-04 Design of vehicle information recorder based on CAN bus LI Li1,2, XIE Xian-zhong1 (1. School of Computer Science and Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China; 2. CHERY Precision Machinery Company Research and Development Department, Chery Automobile Co Ltd, Wuhu 24 1009, China) Abstract ：The design and implementation of vehicle information recorder based on CAN bus is studied, and the whole structure, hardware electric circuit of the system and software design process are introduced. The vehicle information recorder which design is used to collect and display the information of CAN on driving vehicle, store the collected information into USB and then transfer to PC, the information is analyzed using software within PC. This system is already applied in Chery A5 successfully. Key words ：CAN-bus; data collection; vehicle information recorder; CH375; USB 汽车运行期间各种数据信息变化，同步记录行驶状况，在车辆 0 引 言 长时间测试或行驶以后，记录的数据用于分析车辆行驶