Traceability Method of Pollution Gas Based on Fingerprint Recognition of Gas Sensor Array

Abstract

The invention relates to a pollution gas traceability method based on gas sensor array fingerprint identification, which includes constructing a pollutant gas sensor array; establishing a sensor array response fingerprint library for gas pollutant emission sources; online monitoring and real-time collection of response data of the sensor array; The artificial neural network analyzes and compares the data to determine the emission source of the gas pollution accident; carries out the five steps of on-site investigation, evidence collection and verification of the possible emission source of the accident. The invention makes the pollution characteristics of emission sources into an information-integrated fingerprint library without obtaining the specific types and concentrations of gas pollutants, which greatly simplifies the traceability model; the traceability results have a cumulative effect on the optimization and improvement of the fingerprint identification model, The accuracy of traceability can be continuously improved; this method is suitable for pollution traceability in the case of concentrated potential pollution sources within a small spatial scale, and is convenient for rapid and effective supervision of ambient air quality in industrial parks.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering management and control, and relates to a pollution gas traceability method, in particular to a pollution gas traceability method based on gas sensor array fingerprint identification. Background technique [0002] In recent years, the number and scale of my country's industrial parks have grown rapidly, which has played an important role in promoting economic development. At the same time, industrial parks emit a large amount of air pollutants such as volatile organic compounds (VOCs), these pollutants are not only PM 2.5 and O 3 It is an important cause of pollution outbreaks, and most of them have peculiar smell and toxicity, seriously endangering the safety of the ecological environment and people's health. [0003] Enterprises in various industries such as pharmaceuticals, chemicals, printing and dyeing, and packaging are concentrated in the industrial park. There are differ...

AI Technical Summary

Problems solved by technology

However, gas sensors usually have cross-sensitivity to multiple gases, and it is difficult to conduct qualitative and quantitative analysis of hundreds of pollutant gases that may exist in the park through an array composed of a limited number of sensors

Therefore, the traditional traceability method based on material composition and concentration analysis is difficult to be effective in industrial parks where the spatial scale is small, the pollution source density is high, and the types of pollutants are complicated.

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