Application of a morphological non-sampling wavelet method to the online detection signal processing of coal mine wire rope
The testing of wire rope is vital in ensuring personnel safety during coal mine production. At present, it has proven difficult to successfully pre-treat wire rope detection signals, leading to recognition errors and other issues. To this end, this paper details a proposed application of the morphological non-sampling wavelet method to the online detection signal processing of coal mine wire rope. Based on existing mathematical morphological theory, morphological filtering and morphological non-sampled wavelet construction methods, this paper constructs a morphological non-sampling wavelet method suitable for the online detection of the signal characteristics of mine wire rope. This method is then applied to signal preprocessing. The experimental results show that the developed method can effectively filter out noise such as baseline drift, that the signal-to-noise ratio (SNR) of the processed data is 39 dB > 30 dB and the elapsed time is 2 s. The SNRs obtained using the existing wavelet transform method and the morphological filtering method are 17 dB and 22-30 dB, respectively, with elapsed times of 1.99 s and 1.97 s, respectively. In this paper, the effective filtering of the signal is realised under the condition that the processing time of the signal preprocessing method shows no obvious increase.
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Document Type: Research Article
Publication date: September 1, 2019
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- Official Journal of The British Institute of Non-Destructive Testing - includes original research and devlopment papers, technical and scientific reviews and case studies in the fields of NDT and CM.
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