Water quality monitoring data online processing method and device

Abstract

The present invention provides a water quality monitoring data online processing method and device. The method comprises the steps of: obtaining a spectrum curve of water quality to be detected, setting a standard water quality spectrum curve as a reference, employing an autocorrelation function to calculate a related peak distance between the spectrum curve of water quality to be detected and thestandard water quality spectrum curve, and according to the related peak distance and sampling intervals, performing dynamic calibration of the spectrum curve of water quality to be detected; and performing noise removing processing of the spectrum curve after the dynamic calibration by employing a dual tree complex wavelet transform method, a threshold de-noising method and a dual tree complex wavelet inverse transform method, filtering the interference of noise signals, and finally, measuring a water quality reference value through a spectrometer according to the spectrum signals after noise removing process. Therefore, the spectrum signals with good repeatability can be obtained, the interference of water quality detection from outside environmental noise is avoided, and the accuracy of water quality detection is improved.

Description

technical field [0001] The invention relates to the technical field of water quality safety, and more specifically, to a method and device for online processing of water quality monitoring data. Background technique [0002] Environmental issues have increasingly become the focus of social attention, and one of the environmental issues that people are widely concerned about is water quality safety. Water quality detection technology is widely used in water quality monitoring and water quality safety warning of drinking water, water sources, groundwater and municipal sewage. These technologies can be mainly divided into electrochemical analysis method, chromatographic separation technology method, biosensing technology method and spectral analysis method, etc. . Among them, the water quality detection technology based on the spectral analysis method is an important development direction in the current water quality detection technology. [0003] In the spectroscopic analysi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for online processing of water quality monitoring data, and the purpose is to solve the problem that the existing online processing method of water quality detection data cannot obtain spectral signals with good repeatability and cannot filter out the interference of noise signals

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