基于无线HART协议的可燃气体报警仪设计

Design of the Combustible Gas Detector Based on WirelessHART

为解决工业现场可靠监控可燃性气体的问题,提出一种基于WirelessHART协议设计的可燃气体报警仪,对可燃性气体实现监测并实时响应。该报警仪采用MSP430芯片作为主控芯片,通过多种功耗模式实现报警仪的低功耗运行,利用被动检测法使传感器快速检测出可燃气体,并采用WirelessHART协议将数据发送至无线HART网关,实现控制终端与现场设备的双向无线通信。通过实验测试,表明该设计可快速检测出可燃性气体并实现数据的可靠无线传输。

In order to solve the problem that how to monitor the combustible gas reliably in the industrial field,a solution is presented to realize reliably monitoring and response in real-time by using the combustible gas detector based on WirelessHART. The detectors use MSP430 chip as the main control chip. A variety of the power mode can make the detector realizing the low power operation. The sensor can detect the combustible gas rapidly using the passive detection,then the detector using the WirelessHART protocol spends these data to WirelessHART gateway. The detector can realize bi-directional wireless digital communication between WirelessHART instruments and control terminal. The experiment indicates that the combustible gas can be quickly detected and the wireless transmission of the data can be realized reliably.