Signal recognition method, signal recognition device and volatile organic compound detection apparatus
A volatile organic compound and signal identification technology, applied in measurement devices, analysis of gas mixtures, instruments, etc., can solve the problems of cumbersome testing process, inability to reflect gas concentration changes in time, cross-contamination, etc., to improve the spraying process and technology. Effect
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no. 1 example
[0026] Please refer to figure 1 , is a structural block diagram of the volatile organic compound detection device 100 provided in the first embodiment of the present invention. The volatile organic compound detection device 100 provided by the embodiment of the present invention is used to detect the composition and content of volatile organic compounds (volatile organic compounds, VOCs) in spraying operations, so as to prevent and control VOCs pollution. Common VOCs include benzene, toluene, ethylbenzene, xylene, methanol, ethanol, acetone, isopropanol, preferably benzene series.
[0027] The volatile organic compound detection device 100 includes a plurality of hardware and software functional modules, and the volatile organic compound detection device 100 can be equipped with Android (Android) system, IOS (iPhone operating system) system, Windowsphone system, Windows system, etc., as a plurality of software The function module provides the operating environment. In the em...
no. 2 example
[0049] Please refer to Figure 4 , is a flow chart of the signal identification method provided by the second embodiment of the present invention. The signal identification method provided by the second embodiment of the present invention includes the following steps:
[0050] Step S101 , sampling the signal responded by the gas sensor array 106 .
[0051] Specifically, after the signal responded by the gas sensor array 106 is preprocessed by the data acquisition circuit 107, the sampling module 201 collects the preprocessed signal. It is the analog signal generated by the gas sensor array 106 in response to the corresponding sensitive gas, and the digital signal processed by the data acquisition circuit 107 is the sampled signal.
[0052] In the embodiment of the present invention, the step S101 may be executed by the sampling module 201 .
[0053] Step S102, performing feature extraction on the sampled signal.
[0054] Use the principal component analysis method to extra...
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