Design and Implementation of WSN Detection System for Harmful Gas Based on Odour Recognition

摘要

In view of the safety problem with the harmful gas leakage in chemical environment, this paper developsonewireless sensor network (WSN)detection system for harmful gas based on odour recognition. In this system,the sensor array is used to make odour recognition of the four harmful gases such as Cl2, CO, NO2 and SO2 inthe chemical environment; then, the data is transmitted through the ZigBee technology-built WSN to thecentral sink node for data analysis. Thus, the effective recognition and detection of harmful gases in thechemical environment can be achieved so as to avoid potential safety hazards.