基于CAN总线的电气火灾远程监控系统

Electrical Fire remote Monitoring System based on CAN Bus

为了解决传统电气火灾监控系统在远距离数据通信时误码率高、总线上可连接的终端节点数量少、传输速率低等问题,设计了一种基于CAN总线及STM32F103单片机的电气火灾远程监控系统;给出了系统的整体框架及其组成,重点阐述了火灾终端监控设备的硬件及软件设计思路,制订了火灾监控设备与上位机的通信协议;系统实现了消防联动设备的工作状态、被监控设备的供电电压、电流,被保护用电设备的剩余电流值,以及用电设备工作的环境温度的实时监测,并通过CAN总线将监测状态实时传输到远端计算机;在实现火灾监控的基础功能上,增加了通过现场总线与现场其它监控设备通信的主机功能;测试结果表明,系统在远距离数据通信时传输速率提高、增加监控节点的情况下,系统间的数据通信误码率非常低。

In order to solve the problem that conventional electrical fire monitoring system in the long--distance data communication er- ror rate, terminal nodes can be connected to a small number of bus, transfer rate is low, design electrical fire remote monitoring system based on CAN bus and STM32F103 microcontroller. Gives the overall framework of the system and its components, focusing on the hardware and software design ideas of terminal fire monitoring equipment, has developed fire monitoring equipment and PC communication protocols. Sys tern to achieve the operating state fire linkage equipment, is the supply voltage monitoring devices, current, residual current value is to pro- tect electrical equipment, and real--time monitoring of environmental temperature electrical equipment work and status will be monitored through the CAN bus real--time transmission to the remote computer. Fire monitoring in the realization of basic functions, increased by the fieldbus host function and site other monitoring equipment communications. Test results show that the system in long distance data commu nications transmission rate increase, increased monitoring node, the data communication system between the error rate is very low.