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Entropy rate-based electrochemical noise corrosion signal processing method

An electrochemical noise and signal processing technology, applied in weather resistance/light resistance/corrosion resistance, scientific instruments, measuring devices, etc., can solve the problem of less corrosion systems

Inactive Publication Date: 2015-04-08
TIANJIN UNIV
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Problems solved by technology

[0003] Many methods can be used for electrochemical noise signal processing, but there are very few studies using information theory to describe corrosion systems

Method used

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  • Entropy rate-based electrochemical noise corrosion signal processing method
  • Entropy rate-based electrochemical noise corrosion signal processing method
  • Entropy rate-based electrochemical noise corrosion signal processing method

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Embodiment Construction

[0033] The entropy-based electrochemical noise corrosion signal processing method provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Such as figure 1 As shown, the electrochemical noise corrosion signal processing method based on the entropy rate provided by the present invention includes the following steps performed in order:

[0035] Step 1) Raw data arrangement: firstly, the entire electrochemical noise signal file collected from the electrochemical noise experiment is cut into multiple small files with 1024 points as a unit;

[0036] Step 2) Then do DC elimination to obtain time data with wavelet elimination method for each small file data;

[0037] Step 3) Symbolize time data: information theory deals with sequence information, so time data needs to be symbolized, and symbolization is also called serialization;

[0038] Step 4) Calculation of probability distribution μ and t...

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Abstract

The invention relates to an entropy rate-based electrochemical noise corrosion signal processing method, which comprises the following steps: cleansing original data; performing direct current removal on data of each small file by using a wavelet removal method to obtain time data; signifying the time data; calculating probability distribution and a transfer matrix; calculating to obtain an entropy rate value; analyzing the size relation among entropy rates of three corrosion systems; according to a sample, verifying the entropy rate value; and evaluating the entropy rate processing results. In the entropy rate-based electrochemical noise Corrosion signal processing method provided by the invention, each entropy rate is used as a new characteristic value for characterizing an electrochemical corrosion system to represent the degree of chaos of the corrosion system; the data processing results show that each entropy rate can well distinguish among different corrosion systems, and cannot be affected by the concentration of a solution; and finally, an entropy rate parameter and a noise resistance performance parameter are compared to obtain the advantages and the disadvantages of the use of the entropy rate.

Description

technical field [0001] The invention belongs to the technical field of material corrosion detection, in particular to an entropy rate-based electrochemical noise corrosion signal processing method. Background technique [0002] In recent years, new electrochemical noise processing methods have emerged in an endless stream. The main idea is to apply new mathematical methods to the processing of electrochemical noise data. The specific methods are as follows: cluster analysis, using clustering methods to divide corrosion stages; Chaos theory, using chaotic parameters to distinguish corrosion types; neural network, using trained neural networks to distinguish corrosion types and predictions, etc.; these new methods have many new parameters, but the correspondence with the principle of corrosion process is slightly weak and takes longer Therefore, how to find a new processing method for electrochemical noise data and combine it with the principle of corrosion process, so that th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/02
Inventor 李健封皓孔伟康陈冠任郑焕军
Owner TIANJIN UNIV
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