Coal property measuring method based on wavelet transform
A measurement method, wavelet transform technology, applied in the field of atomic emission spectrometry, can solve problems such as noise interference, achieve the effect of eliminating noise interference, convenient and fast operation, and strong denoising target
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[0067] Taking the measurement of carbon element content in coal as an example, a method for measuring coal quality characteristics based on wavelet transform is described below: the method includes the following steps:
[0068] 1) A group of coal samples with known carbon content are used as calibration samples, and the carbon content of each calibration sample is shown in Table 1;
[0069] Table 1 Carbon content of each calibration sample
[0070]
[0071] 2) Use the laser-induced plasma spectroscopy system to detect each calibration sample, and obtain the characteristic spectrum diagram of all calibration samples, which includes the characteristic spectral line intensity data of each element in the calibration sample and the environmental noise Spectral line intensity data composed of continuous background noise;
[0072] 3) Perform the first wavelet transformation on the spectral line intensity data in the characteristic spectrum graph, and obtain the wavelet coefficien...
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