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The Research on Detection Method of Multi-Gas Sensor Based on BP Neural Network

In the paper the multi-gas sensor are detected aimed at the problem of cross interference between the eight kinds of toxic and harmful gases. The cross sensitive characteristics between the different gases are determined through the interference degree, and the cross sensitive model with the environment parameters is built. The BP network is designed with the Matlab toolbox and the data are trained. The results show that the forecast accuracy of the gas concentration can be improved effectively, and the average relative error is reduced. So the new method is put forward to solve the cross interference problem of dangerous chemicals gas effectively.