Chromatographic signal low-delay filtering method for gas chromatographic analyzer

Abstract

The invention discloses a chromatographic signal low-delay filtering method for a gas chromatographic analyzer, and relates to the technical field of gas chromatographic analysis. Hardware of a chromatographic instrument is modified to improve the sampling frequency of a sensor. According to the chromatographic signal low-delay filtering method for the gas chromatographic analyzer, the problem ofdata delay caused by an existing filtering algorithm is solved through transformation of the chromatographic analyzer on hardware and a whole set of software filtering process; compared with softwarefiltering of an existing general filtering algorithm, the chromatographic signal low-delay filtering method formed by transforming a chromatograph on hardware and forming a whole set of software filtering process has the advantages that noise suppression is higher, the real signal suppression effect is smaller, common peak clipping in filtering is also solved, the drawing effect of a chromatographic instrument in actual use is greatly reduced, the sensitivity and visibility of substance detection are improved, and the expression of low-content substances is highlighted.

Description

technical field [0001] The invention relates to the technical field of gas chromatographic analysis, in particular to a low-delay filtering method for chromatographic signals of a gas chromatographic analyzer. Background technique [0002] Gas chromatography is a technique used to analyze a sample composed of a mixture of compounds. A gas chromatograph separates the sample into its individual compounds and is used in conjunction with appropriate detectors to identify and measure those individual compounds. A gas chromatograph Relying on a carrier gas to transport the sample and its component compounds through a heated column, where the sample compounds evaporate and pass through the column at different rates depending on the physical properties of the compounds and their Interaction with the column phase, etc., e.g. smaller molecules generally pass through the column faster than larger molecules due to their greater volatility, all molecules corresponding to a particular com...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a low-delay filtering method for chromatographic signals of gas chromatographic analyzers, which solves the problem that most software filtering often causes long delays and thus reduces the ability to obtain normal chromatographic signals to a certain extent. The problem with image efficiency

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