Method for detecting moisture content of dry powder extinguishing agents based on near infrared spectroscopy analysis

Abstract

The invention provides a method for detecting the moisture content of dry powder extinguishing agents based on near infrared spectroscopy analysis. The method comprises the following steps of: 1) establishing a calibration set and a validation set sample spectrum; 2) preprocessing original spectral information through a second derivative, standard normal variate and KarlNorris derivate smoothing filter; 3) establishing a calibration model for the functional relation between a near infrared spectrum of the calibration set and the true value of the moisture content of a corresponding dry powder extinguishing agent sample by using a partial least squares method; 4) validating and optimizing the calibration model; and 5) inputting the near infrared spectrum of the dry powder extinguishing agent sample to be detected into the optimized calibration model, so as to obtain the moisture content value. The method is a method for quickly detecting the moisture content of the dry powder extinguishing agents based on the near infrared spectroscopy analysis, is established based on the analysis of the near infrared spectrums of the moisture content values of different dry powder extinguishing agents; and the detection method has the advantages of being quick in analysis, high in efficiency, simple and convenient to operate, low in cost, and free from pollution to the environment.

Description

technical field [0001] The invention relates to fire extinguishing agent quality detection, in particular to a method for detecting moisture content of dry powder fire extinguishing agent based on near-infrared spectrum analysis. Background technique [0002] The moisture content of the dry powder fire extinguishing agent directly affects the fire extinguishing efficiency, physical and chemical properties and selling price of the dry powder fire extinguishing agent. In my country, the current method for determining the moisture content of dry powder fire extinguishing agents is the national standard test method GB4066, etc. This detection method requires precise weighing and vacuum drying. High, complex detection process, long detection cycle, and destructive treatment of samples, etc., cannot be used for rapid determination of moisture content in the production or use of dry powder fire extinguishing agent. Therefore, there is an urgent need for a new method to realize real...

AI Technical Summary

Problems solved by technology

In my country, the current method for determining the moisture content of dry powder fire extinguishing agents is the national standard test method GB4066, etc. This detection method requires precise weighing and vacuum drying. High, complex detection process, long detection cycle, destructive treatment of samples, etc., cannot be used for rapid determination of moisture content in the production or use of dry powder fire extinguishing agent

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