摘要
在CAN总线技术与SAE J1939协议基础上,提出了基于CAN总线的汽车数字仪表设计。详细介绍SAE J1939协议的报文帧格式。该系统设计以ARM Cortex M3器件为中央处理器,由信号采集模块和处理、显示模块组成汽车数字仪表硬件平台,并编程实现了数据接收处理的软件程序。通过对CAN总线数据和各传感器数据的读取、处理和显示,该系统设计能够实时反映车辆的工况。
Based on CAN bus technology and SAE J1939 protocol,the design of vehicle digital meter based on CAN bus is presented in this paper. The PDU format of SAE J1939 protocol is described in details.The hardware platform of the vehicle digital meter consists of signal input module,signal processing and display module,ARM Cortex M3 is chosen as this system main controller.The software programming can accomplish data receiving and processing.By processing and displaying in CAN bus and sensor data, the vehicle condition can be reflected in real-time.
出处
《国外电子元器件》
2008年第12期59-61,共3页
International Electronic Elements
