Light interference gas detection device and working condition detection method thereof

A gas detection and optical interference technology, which is applied in the measurement of phase influence characteristics, etc., can solve problems such as scientific judgment of working conditions, and achieve the effect of improving safety and reliability.

Active Publication Date: 2014-07-16
CHONGQING TONGBO MEASUREMENT & CONTROL INSTR
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Problems solved by technology

[0002] The existing optical interference gas (such as methane or carbon dioxide) detection device that uses the human eye to actively identify the offset of the interference spectrum to read the concentration value of the detected gas, due to the lack of effective detection of interference fringes, it is impossible to monitor the working conditions of the device itself. make a scientific judgment

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  • Light interference gas detection device and working condition detection method thereof
  • Light interference gas detection device and working condition detection method thereof
  • Light interference gas detection device and working condition detection method thereof

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Embodiment Construction

[0026] Preferred embodiments of the present invention will be described in detail below. It should be understood that the preferred embodiments are only for illustrating the present invention, but not for limiting the protection scope of the present invention.

[0027] see figure 1 , an optical interference gas detection device, including a light source, an optical path and a gas path, and an image sensor, where optical interference fringes are converted into electrical signals, preferably an area array image sensor;

[0028] The acquisition circuit collects the fringe waveform data from the data output by the image sensor;

[0029] The fringe analysis and processing module analyzes and processes the fringe waveform data collected by the acquisition circuit, and extracts valid data therefrom;

[0030] The working condition detection module evaluates the working condition according to the analysis and processing results of the fringe waveform data. The working condition dete...

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Abstract

The invention relates to the technical field of gas detection and provides a light interference gas detection device capable of automatically carrying out analysis processing on light interference fringes. The light interference gas detection device comprises a light source, a light path, a gas circuit, an image sensor, an acquiring circuit, a fringe analysis processing module and a working condition detection module, wherein the image sensor is used for converting the light interference fringes into an electric signal; the acquiring circuit is used for acquiring fringe waveform data from data output by the image sensor; the fringe analysis processing module is used for carrying out analysis processing on the fringe waveform data acquired by the acquiring circuit; and the working condition detection module is used for evaluating the working condition according to an analysis processing result of the fringe waveform data. The invention also discloses a working condition detection method of the light interference gas detection device. According to the light interference gas detection device and working condition detection method provided by the invention, the anti-interference capacity, the safety and the reliability of the detection device can be improved.

Description

technical field [0001] The invention relates to the technical field of gas detection, and is an optical interference detection gas concentration numerical device and a working condition detection method which are particularly suitable for self-checking working conditions. Background technique [0002] The existing optical interference gas (such as methane or carbon dioxide) detection device that uses the human eye to actively identify the offset of the interference spectrum to read the value of the detected gas concentration, due to the lack of effective detection of interference fringes, it is impossible to monitor the working conditions of the device itself. make a scientific judgment. Contents of the invention [0003] In view of this, the present invention provides a method for evaluating the self-inspection of the working condition of the device by analyzing and processing the light interference fringes. [0004] The purpose of the present invention is achieved by th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/45
Inventor 张晶龚渝
Owner CHONGQING TONGBO MEASUREMENT & CONTROL INSTR
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