基于Linux的汽车CAN总线信息采集系统的应用研究

阐述了Linux下基于CAN总线的信息采集系统。主要包括CAN总线中央处理模块,CAN子节点信息采集模块等。传统的CAN总线局域网连接有上位机以实现对CAN节点的控制功能。阐述的CAN总线中央处理模块,以嵌入式为平台,能够实现传统上位机对节点访问的功能,以满足汽车等系统中对于硬件体积要小的要求。通过分析汽车环境下的干扰,从硬件与软件两方面设计下手提高系统的抗干扰能力。CAN总线子节点信息采集能够将采集到的数据经过其处理,能直接传递至总线上,以供系统使用。实验表明,系统能够准确稳定的采集与收发数据。

AppIication of CAN Bus Data Acquisition System Based on Linux

This paper describes the information coI ection system based on the reference can bus,and incIudes a centraI pro-cessing moduIe CAN bus,CAN chiId node information coI ection moduIe.The traditionaI CAN bus LAN connected PC in order to achieve the controI functions of the CAN nodes.This paper describes the CAN bus centraI processing moduIe,embedded as a pIatform to achieve the traditionaI PC functionaIity to meet the automotive and other system hardware for smaI er voI-ume requirements.By anaIyzing the interference automotive environment,both from a hardware and software system designed to improve the anti-jamming capabiIity to start.CAN-bus information gathering can be a chiId node data coI ected through its treatment,can be passed directIy to the bus for system using.