一种提高CAN系统稳定性和实时性的方法

Jianqun Wang, Jingxuan Chen, Ning Cao
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引用次数: 4

摘要

为了缓解多节点CAN通信中由于无序发送和广播特性造成的严重的帧碰撞和丢失问题,保证系统的可靠性和有效性,同时解决传统CAN总线通信中难以实现的同步采集问题,提出了一种基于帧身份的CAN总线通信中帧队列的动态自主同步方法。通过建立帧id的动态队列来指示何时发送数据,从而实现采集的同步,增强了通信的实时性。该方法已在一个信息采集系统中进行了测试,取得了良好的效果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A method to improve the stability and real-time ability of CAN
In order to relieve the severe collisions and losses of frames due to unordered sendings and broadcast characteristics in multi-nodes CAN communication and guarantee the reliability and validity of system and in the same time solve the synchronous collection which is hard to realize in conventional CAN, a dynamic autonomous synchronization method of frame queue in CAN bus communication based on frame identity is proposed in this paper, which builds a dynamic queue of IDs of frames to tell the time slot when the data to be sent and then realizes the synchronization of acquisition and enhances the real-time ability of communication. The method has been tested in an information collection system and achieved great results.
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