基于CAN总线与GPRS的营运客车运行状态远程监控系统研究

Remote Monitoring System of Running State for Commercial Passenger Car with CAN Bus and GPRS

为实现营运车辆远程监控与故障诊断,提升车辆运行安全监管水平并降低事故隐患,提出并设计基于CAN总线与GPRS的营运客车运行状态信息远程监控系统。采用带CAN总线控制器的Freescale MC9S12DG128开发了营运客车运行状态信息采集车载终端,可实时采集车辆工作单元的关键参数如制动压力、油压、转速以及故障码信息等,并通过GPRS模块传输给远程监控中心系统分析应用。经实车试验证明,整体系统工作稳定可靠,能够实现预期设计功能。

In order to realize remote monitoring and fault diagnosis of commercial passenger car,and to improve running safety management level and reduce accident potential of vehicle,this paper proposed and designed a remote monitoring system of running state for commercial passenger car based on CAN Bus and GPRS.A vehicle information collection terminal of running state for commercial passenger car was developed with the Freescale MC9S12DG128 chip,equipped with the CAN bus controller.This system collected key parameters of vehicle work unit such as oil pressure and brake pressure,as well as fault code information through the designed CAN nodes,and transmitted these parameters to the remote monitoring platform through GPRS modules for further application and analysis.The real vehicle experiment results indicate that this system can accomplish each design function stably and reliably.