Toxic Gas Leak Monitoring Alarm System Based on Wireless Sensor Network

Aiming at the problem of toxic gas leakage in petrochemical plant, a monitoring and alarming system for toxic gas leakage based on wireless sensor network is designed. The system includes four parts: terminal node, coordinator, GSM module and PC host computer. Among them, the wireless sensor network utilizes CC2530 as the main control chip, and realizes the transceiver of data between the coordinator node and the site terminal node based on the ZigBee protocol stack. If the coordinator node receives the concentration of toxic gases over the alert value, will drive the GSM module to send alarm information to the staff, at the same time the PC Kingview monitoring platform for the real-time display of the concentration of toxic gases, the system makes full use of the serial communication technology to realize the communication between the coordinator node, PC and GSM module;This paper introduces the system from four aspects: the overall design scheme, the hardware design of the system, the software design of the system and the performance test of the system. It is proved by experiment that the monitoring alarm system has the advantages of zero wiring, sensitive alarm, low power consumption and low cost.