基于C8051的CAN多点实时数据通信系统

摘要

A communication system of CAN multi-point real-time date based on C8051 is designed to meet the needs of real-time monitoring multiple devices in industry.The system has the features of high-speed,low latency,low error rate and high stability.Compared with the traditional RS232 and 485 communications systems,the system has a unique non-destructive CAN-bus arbitration and message filtering.It makes communication between each device easy and fast.The result shows that the CAN system is better in communications quality than the traditional ones.It can be used for industrial real-time monitoring multiple devices.%针对工业上对于多个设备实时监控的高速率、低延迟、错误率低、稳定性高的要求,基于C8051系列单片机设计了CAN多点实时数据通信系统。该系统利用CAN通信独有的非破坏性总线仲裁和报文滤波技术,使得多设备与主机、多设备之间的通信变得流畅,接入方式简易。试验结果表明,该系统通信速度快、错误率低、稳定性高且方便增加通信设备,与传统的RS232、485通信系统相比,通信速率有明显提高,可用于工业上对于多个设备的实时监控。