The Multi-sensor Malodorous Gas Signal Analysis Based On Olfactory Discrimination

In recent years, along with the development of our country, the stench pollution,especially the stench of rotting organic matter caused a lot of inconvenience to people’s lives, people’s attention constantly. So far, the study of stench pollution governance did not achieve enough progress.Therefore, It has very realistic significance to develop a good real-time, higher reliability and intelligent stench gas detection system which can reflect the pollution of the current environment condition.This topic based on the stench gas signal acquisition system, completes the multi-sensor signal analysis and processing. The computer system processing as the main object of study, focuses on the PC softwarewritten procedures.The working process were introduced in detail and so were the functional parts of it. The system’s pneumatic parts which is necessary in the gas gathering process are expounded.,the communication protocol between the upper machine and lower machine are also introduced.Discussion System in a lab environment and the actual sampling of different sampling modes, solve experimental problems encountered in the real environment. Combined experimental phenomena, analysis feature extraction methods. Improved data processing,the system experiment more simple and fast.By studying the literature and conducting a large number of experiments, and sensor signal pre-processing method is proposed. Detailed description of PC programming framework specifically programmed for each branch and branch details.The paper also deeply studied the working principle and all kinds of performance of the gas sensor in it.The device of the system can analyze the sensor sensitivity, low detection limit and the effect of repetitive and show the experiment data.A large number of malodorous gas detection experiments data show that the malodorous gas detection device can realize quantitative analysis and processing of multi-sensor signal successfully as well as having good repeatability. The result is stable and reliable. Multi-sensor signal analysis and processing is also Implemented. The reliability and timeliness of the whole system device can satisfy the requirement of project.And the system has a broad application prospect and important value of innovation as well.