基于CAN总线的分布式消防报警系统

为避免大型建筑消防报警系统因主机故障而全部瘫痪的危险,研究了一种多主分布式消防报警系统.采用32位MCF5282微处理器和多种8位微控制器,基于CAN总线实现了对等分布式的消防报警系统设计.首先介绍系统的结构设计,给出了主控制器和系统节点的具体实现方法;采用一种公文式数据报通讯协议,解决了多主通讯存在的数据丢失问题;最后介绍了系统软件结构和设计思想.系统在信息传输的安全性、准确性、实时性等方面达到了较高的性能指标.

Distributed Fire Alarm System Design Based on CAN Bus

To avoid the risk of system failure due to main controller trouble,the design problem of multi-host distributed fire alarm system is discussed. 32-bit MCF5282 micro-processor and multiple 8-bit micro-controller are adopted in the system design.Based on Can-bus,a peer-to-peer distributed fire alarm system is designed.The system architecture is introduced,and the main controller and intelligent nodes realization methods are given.Aimed at the frame-drop problem of the multi-host communication,a documental style protocol is used.The software architecture and design idea of the main controller is presented.It gets good index of the safety,veracity and real-time response.