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Prediction method of soil heavy metal element content based on terahertz spectroscopy and depth autoencoder

A technology of automatic encoder and element content, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of inability to comprehensively analyze and summarize soil components in large quantities, and achieve the effect of ensuring accuracy, predicting accuracy, and ensuring accuracy

Active Publication Date: 2020-02-14
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to solve the defect that soil components cannot be comprehensively analyzed and summarized in large quantities in the prior art, and to provide a soil heavy metal element content prediction method based on terahertz spectrum and depth autoencoder to solve the above problems

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  • Prediction method of soil heavy metal element content based on terahertz spectroscopy and depth autoencoder
  • Prediction method of soil heavy metal element content based on terahertz spectroscopy and depth autoencoder
  • Prediction method of soil heavy metal element content based on terahertz spectroscopy and depth autoencoder

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[0055] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0056] Such as figure 1 As shown, the soil heavy metal element content prediction method based on terahertz spectrum and depth autoencoder described in the present invention comprises the following steps:

[0057] The first step is the acquisition and pretreatment of soil samples. Obtain soil samples and randomly divide them into training samples and test samples, and use a spectrometer to obtain terahertz spectral data of soil samples. The steps to obtain terahertz spectral data of soil samples using a spectrometer are as follows:

[0058] (1) The collected soil is numbered sequentially after removing impurities and air-dried; after calculation, weighing, mixing, dissolving, stirring, drying, and grinding processes, it is bagged an...

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Abstract

The invention relates to a soil heavy metal element content predicting method based on a terahertz spectrum and a deep automatic encoder. Compared with the prior art, the method overcomes the shortcoming that ingredients of soil cannot be comprehensively analyzed and generalized on a large scale. The method comprises the following steps: acquiring and pretreating a soil sample; construction of a predicting model based on the deep automatic encoder: stacking a denoising automatic encoder and a compression encoder on construction of a model to form the predicting model of the deep automatic encoder; training of the predicting model of the deep automatic encoder: inputting terahertz spectrum data for training a sample into the predicting model of the deep automatic encoder to finish training of the predicting model of the deep automatic encoder; and predicting the heavy metal element content of soil. By a structural model of the deep automatic encoder and the terahertz spectrum, ingredients of the heavy metal elements of the soil are analyzed and predicted.

Description

technical field [0001] The invention relates to the technical field of soil component analysis, in particular to a method for predicting the content of heavy metal elements in soil based on terahertz spectrum and depth autoencoder. Background technique [0002] Human industrial and agricultural production activities bring a large amount of heavy metal elements into the soil, causing soil heavy metal element pollution, which in turn affects the quality of cultivated land and seriously endangers human health. Existing detection methods for heavy metal elements in soil mainly include flame atomic absorption spectrophotometry, inductively coupled plasma emission spectrometry, etc. The required instruments are relatively complicated, and soil samples need to be pre-processed such as digestion. For large areas of soil, a large number of soil samples need to be collected for specific analysis. The detection speed is slow and the cycle is long. The rapid detection of heavy metal ele...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3586
CPCG01N21/3586G16Z99/00
Inventor 陈天娇王儒敬谢成军张洁李瑞陈红波
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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