Water quality analyzing method based on signal processing

A technology of water quality analysis and signal processing, applied in the field of signal processing and the environment, can solve problems that restrict water quality analysis and research

Inactive Publication Date: 2017-06-30
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, it is no longer a difficult problem to obtain water quality monitoring data, but the effective processing of monitoring signals has largely restricted the research of water quality analysis

Method used

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  • Water quality analyzing method based on signal processing
  • Water quality analyzing method based on signal processing
  • Water quality analyzing method based on signal processing

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Embodiment Construction

[0011] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific examples.

[0012] Step 1, input water quality monitoring signal;

[0013] Step 2, decompose the initial input signal, and determine the decomposition termination criterion;

[0014] Said step 2 further comprises the following steps:

[0015] Step 2.1, calculating the local extremum of the input signal;

[0016] Step 2.2, calculating the upper (lower) envelope;

[0017] a) Extract the upper (lower) envelope by minimizing the following function:

[0018]

[0019] s.t.E(r)=H(r),r∈Q

[0020] Where J(·) is the energy function, E is the upper envelope, Q is a vector corresponding to the set of local maxima (minimum values) in the signal H, r is a position of the signal H, s∈N(r), N(r) is a neighborhood of r, w rs is an affine function based on the squared difference of the follow...

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Abstract

The invention provides a water quality analyzing method based on signal processing and discloses a water quality analyzing method through the processing of water quality monitoring data in the signal processing and environment field. The method comprises three parts: 1) decomposing a signal based on a sparse linear equation group; 2) further decomposing the structural parts of the signal obtained from the last step; and based on the first part's signal decomposition method and the adding method of the wavelet fusion method, integrating the high-resolution signal and the multi-spectral signal to obtain a new signal. The method of the invention utilizes the signal decomposing and integrating technology to realize the full-automatic water quality analysis based on signal processing.

Description

[0001] Technical field: [0002] The invention relates to the field of signal processing and environment, and uses the technology of signal processing to solve the problem of water quality analysis. [0003] Background technique: [0004] In recent years, the field of environmental protection is a research hotspot, among which water resources are an important research object. Water is an essential and irreplaceable resource for human survival and social development. The current water pollution problem has had a great impact on the natural environment and people's normal life. Rational development and utilization of water resources and emphasis on water resource protection is a meaningful work. [0005] At present, it is no longer a difficult problem to obtain water quality monitoring data, but the effective processing of monitoring signals has largely restricted the research of water quality analysis. Therefore, finding an efficient and accurate signal processing algorithm i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62G01N21/25
CPCG01N21/25G06F2218/08G06F18/2136G06F18/253
Inventor 姜安谢启伟饶凯锋唐亮刘勇马梅王子健
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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