车载数据记录设备的设计与实现
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摘要
为了给车辆性能评估和故障分析提供数据来源,设计开发了一款车载运行数据采集和记录设备。将记录设备作为车辆原有CAN网络的新增节点,预先设定车辆ECU以固定时间间隔往外发送数据帧,记录设备监听ECU发送的数据帧,并将目标数据帧解析压缩后存储起来。记录设备由硬件电路和系统软件组成。硬件电路采用XC2785作为主控芯片,由车辆电瓶供电,主要包括电源模块、CAN通讯模块和数据存储模块。系统软件遵循CAN 2.0B通讯协议,记录频率为20个变量每秒,可实现150 h连续不间断记录。试验表明记录数据准确可靠,满足车载数据记录的要求。
A vehicle-mounted operation data acquisition equipment is developed to provide basic data for the performance evaluation and failure analysis. The acquisition equipment is added to the original CAN network as a new node. First, The ECU of the experimental vehicle is set to send data frames to the CAN network in a fixed time interval. Then the acquisition equipment listens to the data frames sent by the ECU. Finally, the target data frames are interpreted, compressed and stored. The acquisition equipment consists of hardware circuit and the system software. The hardware circuit uses the XC2785 microcontroller as the control unit and powered by the battery. Power-supply module, CAN communication module and data storage module make up the hardware circuit. The system software which follows the CAN 2.0 B protocol can implement 150 hours continuous recording with 20 variables per second. The results indicate that the data acquisition is accurately and reliable. It can satisfy the requirements of the vehicle-mounted data acquisition.
A vehicle-mounted operation data acquisition equipment is developed to provide basic data for the performance evaluation and failure analysis. The acquisition equipment is added to the original CAN network as a new node. First, The ECU of the experimental vehicle is set to send data frames to the CAN network in a fixed time interval. Then the acquisition equipment listens to the data frames sent by the ECU. Finally, the target data frames are interpreted, compressed and stored. The acquisition equipment consists of hardware circuit and the system software. The hardware circuit uses the XC2785 microcontroller as the control unit and powered by the battery. Power-supply module, CAN communication module and data storage module make up the hardware circuit. The system software which follows the CAN 2.0 B protocol can implement 150 hours continuous recording with 20 variables per second. The results indicate that the data acquisition is accurately and reliable. It can satisfy the requirements of the vehicle-mounted data acquisition.
引文
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[15] 徐云和.车载无线通讯技术的应用及发展前景[J].工程技术(文摘版),2017 (11):315.
[2] 杨亚联,钱三平,秦大同,等.混合动力汽车故障数据记录系统设计[J].重庆大学学报,2008,31(8):854-858.
[3] 丁圣彦,罗峰,孙泽昌.基于CCP协议利用CANape进行电控单元标定[J].电子技术应用,2005,31(12):5-7,10.
[4] 邱金龙,李奎,苏森,等.汽车事故数据记录器数据规范及应用进展综述[J].汽车工程学报,2017,7(2):79-85.
[5] 单彦虎,甄国涌,李圣昆.基于CAN总线的车载记录系统的设计与实现[J].仪表技术与传感器,2010,(9):40-42.
[6] 张吉卫,焦学增,武晓明.汽车CAN总线数据记录仪开发[J].电子测量技术,2008,31(2):156-158,166.
[7] 古良玲,陶炳清,张静.基于C8051F020的车载数据记录仪的硬件电路[J].重庆工学院学报(自然科学版),2008,22(4):23-26.
[8] 袁清峰,刘志远,赵天峰,等.一种车辆状态通用自动监测装置设计与实现[J].计算机测量与控制,2016,24(6):15-17.
[9] 王平,江华丽,何花.基于单片机的CAN总线通讯应用设计[J].电子测量技术,2009,32(9):131-135.
[10] 麻金龙,夏超英,蔡奔.基于Infineon XC2785的电池管理系统采集单元设计[J].仪表技术与传感器,2014 (7):24-27,30.
[11] 麻金龙.基于英飞凌XC2785的电动汽车电池管理系统设计[D].天津:天津大学,2013.
[12] 王伟.基于InfineonXC2785X的SCR电控系统平台开发[D].长春:吉林大学,2012.
[13] 陈光建,刘国权,徐涛,等.基于C8051f060单片机的CAN2.0B数据采集系统[J].数据采集与处理,2009,24(S1):290-293.
[14] 王昕,戴鹏,王永震,等.基于CAN2.0B的井下数据采集系统[J].仪表技术与传感器,2008 (9):55-57.
[15] 徐云和.车载无线通讯技术的应用及发展前景[J].工程技术(文摘版),2017 (11):315.