Compensation method for waveform pulse non-linear distortion in multi-component infrared smoke analytical instrument

A flue gas analyzer, non-linear distortion technology, applied in the analysis of materials, material analysis through optical means, instruments, etc., can solve the problems of large time constant, high cost, and intergas interference of infrared sensors
CN101226142AInactive Publication Date: 2008-07-23上海宝英光电科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
上海宝英光电科技有限公司
Publication Date
2008-07-23
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention relates to a compensation method of waveform pulse non-linear distortion in multi-component infrared smoke analyzer, which comprises setting an initial weight value (1) of object pulse, using test to record the non-linear distortion of the waveform (2), calculating out one correct weight value (3), calculating if the distortion corrected via the correct weight value reaches demand, or else modifying the initial weight value (4). The invention has the advantages that sine the positive and negative values of each pulse are set with different weight values and checked without peak value but with pulse envelope integral that calculates out the integral phase and the weight values of the pulse positive and negative values, the invention can hold the integral value in the envelope line when each pulse shifts, to eliminate baseline shift effect on each pulse and only present the reflection on relative signal.
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Description

technical field

[0001] The invention relates to a multi-component infrared smoke gas analyzer, in particular to a compensation method for waveform pulse nonlinear distortion in the infrared gas analyzer. Background technique

[0002] In view of the quality control requirements of steel, cement and other material industries, as well as the needs of thermal power generation, waste incineration and other industries for environmental protection emission monitoring, it is necessary to simultaneously detect SO 2 , NO X , CO, CO 2 , O 2 The equipment with the highest concentration is the flue gas emission online analysis system (CEMS).

[0003] At present, the multi-component gas analyzers, which are the core components of the system, all use non-dispersive infrared gas analyzers (NDIR). The NDIR solution is to use a micro-sonic thin-film sensor. The sensitivity of the sensor comes from the gas filled inside. The absorption spectrum of the filled gas is the working band of the ...

Claims

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