Gas metering monitoring device and monitoring method

A gas measurement and monitoring device technology, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of low measurement and monitoring accuracy, and achieve the effects of high stability, high reliability and improved accuracy

Inactive Publication Date: 2010-12-15
BEIJING DEFINE TECH
View PDF5 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Through the research on the prior art, the inventors found that in this gas metering and monitoring scheme using infrared spectroscopy technology, because i

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Gas metering monitoring device and monitoring method
  • Gas metering monitoring device and monitoring method
  • Gas metering monitoring device and monitoring method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0058] Example one:

[0059] figure 1 It is a schematic structural diagram of a gas detection device provided in Embodiment 1 of the present invention, and the device includes:

[0060] The laser 101, the signal detector 102, the laser control module 103, the signal processing module 104, the data analysis module 105 and the sample chamber 106.

[0061] The laser control module 103 is connected to the laser 101 for driving the laser 101 to emit laser light of a specific wavelength to the sample gas in the sample chamber 106.

[0062] The laser 101 may be a tunable diode laser, and specifically may be a semiconductor distributed feedback laser or a semiconductor vertical cavity surface emitting laser.

[0063] Sample gas is introduced into the sample chamber 106. The sample chamber 106 may be a single sample chamber or a multiple reflection sample chamber, and the multiple reflection sample chamber may specifically be a double reflection sample chamber, a Herriott type or a White type m...

Example Embodiment

[0111] Embodiment two:

[0112] See image 3 As shown, the flow diagram of the gas metering and monitoring method provided in this embodiment, the method specifically includes the following steps:

[0113] S301, emitting a specific laser beam to the sample chamber;

[0114] S302, receiving a transmission signal passing through the sample gas in the sample chamber;

[0115] S303: Convert the transmission signal into an absorption spectrum of the gas to be measured;

[0116] S304: Analyze the absorption spectrum of the gas to be measured to obtain information about the gas to be measured.

[0117] Wherein, the conversion of the transmission signal into the absorption spectrum of the gas to be measured may specifically include:

[0118] Converting the transmission signal from an optical signal to an electrical signal;

[0119] The transmission signal is amplified, and the amplified transmission signal is demodulated to obtain the absorption spectrum of the gas to be measured.

[0120] For the ...

Example Embodiment

[0122] Embodiment three:

[0123] As shown in the figure, it is a schematic flow chart of the gas metering and monitoring method provided in this embodiment. The method specifically includes the following steps:

[0124] S401: Superimpose the low-frequency sawtooth wave and the high-frequency sine wave to drive the laser to emit a specific laser beam to the sample chamber;

[0125] S402, acquiring a transmission signal containing high-frequency information passing through the gas to be measured in the sample chamber;

[0126] S403, converting the transmission signal into an absorption spectrum of the gas to be measured;

[0127] S404: Acquire a frequency-doubled signal curve in the absorption spectrum line;

[0128] S405: Analyze the peak value of the frequency-multiplied signal to obtain information about the gas to be measured.

[0129] Wherein, in order to make the obtained gas information to be measured more accurate, before the analysis of the peak value of the frequency multiplier s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses gas metering monitoring device and monitoring method. The device comprises a laser, a signal detector, a laser control module, a signal processing module, a data analysis module and a sample room, wherein the laser control module is connected with the laser and is used for driving the laser to transmit laser light with a specified wavelength to a sample gas in the sample room; the signal detector is used for acquiring a transmission signal passing through the sample gas in the sample room and sending the transmission signal to the signal processing module; the signal processing module is used for converting the transmission signal into the absorption spectrum of gas to be tested; and the data analysis module is used for analyzing the absorption spectrum of the gas to be tested to obtain the information of the gas to be tested. The metering monitoring scheme can not be influenced by moisture, dust and other factors and can increase the metering monitoring accuracy of the gas to be tested.

Description

Technical field: [0001] The invention relates to the field of environmental monitoring, in particular to a gas metering monitoring device and a monitoring method. Background technique: [0002] Under the CDM (Clean Development Mechanism) agreed in the "Kyoto Protocol", developed countries can invest in developing countries to obtain greenhouse emission reductions at a lower cost than domestic costs. "The emission reduction targets promised in ", but also conducive to the promotion of sustainable socio-economic development in developing countries. The accuracy of data measurement of CDM projects is very important, especially the measurement and monitoring of gases related to greenhouse gases (methane, carbon dioxide, etc.), which is the key to the quality assurance of CDM projects. All CDM projects must conduct post-mortem monitoring in accordance with the established monitoring plan, and the United Nations Executive Council will issue the certified emission reductions gener...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N21/31G01N21/35G01N21/39
Inventor 周欣
Owner BEIJING DEFINE TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap