Photoacoustic spectrometry identification method and device for characteristic gas in transformer oil
A technology of photoacoustic spectroscopy and transformer oil, applied in measurement devices, neural learning methods, character and pattern recognition, etc., can solve the problems of low failure rate, high detection accuracy, long service life, etc., to improve accuracy and improve training. Efficiency, the effect of reducing fitting time
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[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0027] refer to figure 1, in the first aspect of the present invention, a photoacoustic spectrum identification method of characteristic gas in transformer oil is provided, comprising the following steps: S101. a photoacoustic spectrum; the bands of each photoacoustic spectrum include a single absorption band of a target characteristic gas and absorption bands of multiple gases; S102. performing image enhancement on each photoacoustic spectrum and removing spectral lines whose absorption intensity is lower than a threshold, Then the photoacoustic spectrum is sequentially sampled in sections, smoothed and filtered to construct a photoacoustic spectrum data set; S103. Extract the shape, absorption line position, spect...
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