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Mine alarm device based on CO2 and NO2 detection

An alarm device, CO2 technology, applied in mining devices, measuring devices, using sonic/ultrasonic/infrasonic waves to analyze fluids, etc., can solve the problems of gas detection defects, single function, etc., to ensure reliability, improve sensitivity, and increase adsorption. effect of ability

Inactive Publication Date: 2016-11-09
肖小渝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing mine alarm devices generally only have the gas alarm function, the function is relatively simple, and there are defects in the detection of CO2, NO2 and other gases

Method used

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  • Mine alarm device based on CO2 and NO2 detection
  • Mine alarm device based on CO2 and NO2 detection
  • Mine alarm device based on CO2 and NO2 detection

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0042] This application provides a mine alarm device based on CO2 and NO2 detection, including a mine alarm device body and a monitoring CO installed outside the mine alarm device. 2 , NO 2 SAW sensor for gas concentration; such as figure 1 The schematic diagram of the SAW sensor structure is shown. The SAW sensor has a five-channel structure, wherein channel three is used as a reference channel, and the sensitive areas of channel one and channel two are coated with sensitive film material one (01) for CO 2 Gas detection; the sensitive area of ​​channel 4 and channel 5 is coated with sensitive film material 2 (02) for NO 2 The detection of gas; the channel sensitive thin film materials one and two are three layers, and a layer of Ni film (03) is also magnetron sputtered between the sensitive thin film and the SAW device, and the thickness of the Ni film is 140nm; figure 2 show figure 1 The cross-sectional view of the coating sequence of Ni film and sensitive thin film mate...

Embodiment 2

[0061] This application provides a mine alarm device based on CO2 and NO2 detection, including a mine alarm device body and a monitoring CO installed outside the mine alarm device. 2 , NO 2 SAW sensor for gas concentration; such as figure 1 The schematic diagram of the SAW sensor structure is shown. The SAW sensor has a five-channel structure, wherein channel three is used as a reference channel, and the sensitive areas of channel one and channel two are coated with sensitive film material one (01) for CO 2 Gas detection; the sensitive area of ​​channel 4 and channel 5 is coated with sensitive film material 2 (02) for NO 2 The detection of gas; the first and second channel sensitive film materials are three layers, and a layer of Ni film (03) is also magnetron sputtered between the sensitive film and the SAW device, and the thickness of the Ni film is 170nm; figure 2 show figure 1 The cross-sectional view of the coating sequence of Ni film and sensitive thin film material ...

Embodiment 3

[0079] This application provides a mine alarm device based on CO2 and NO2 detection, including a mine alarm device body and a monitoring CO installed outside the mine alarm device. 2 , NO 2 SAW sensor for gas concentration; such as figure 1 The schematic diagram of the SAW sensor structure is shown. The SAW sensor has a five-channel structure, wherein channel three is used as a reference channel, and the sensitive areas of channel one and channel two are coated with sensitive thin film material one (01) for CO 2 Gas detection; the sensitive area of ​​channel 4 and channel 5 is coated with sensitive film material 2 (02) for NO 2 The detection of gas; the first and second channel sensitive film materials are three layers, and a layer of Ni film (03) is also magnetron sputtered between the sensitive film and the SAW device, and the thickness of the Ni film is 160nm; figure 2 show figure 1 The cross-sectional view of the coating sequence of Ni film and sensitive thin film mate...

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Abstract

The invention provides a mine alarm device based on CO2 and NO2 detection. The mine alarm device comprises an alarm device body and a SAW sensor installed out of the alarm device and used for monitoring the concentration of CO2 and NO2, wherein the SAW sensor is based on a SAW element and has five channels, a channel III is used as a reference channel, the sensitive areas of a channel I and a channel II are coated with a sensitive thin-film material I for detection of CO2 gas, and the sensitive areas of a channel IV and a channel V are coated with a sensitive thin-film material II for detection of NO2 gas. According to the invention, dual channels are employed for simultaneous detection of CO2 gas or NO2 gas, so credibility of data read by the sensor is guaranteed; and thus, the mine alarm device has good detection sensitivity to CO2 gas and NO2 gas and has good high temperature stability.

Description

technical field [0001] The present application relates to the field of mines, in particular to a mine alarm device based on CO2 and NO2 detection. Background technique [0002] A mine is a mine in which ore is mined underground, sometimes called an inclined shaft, shaft, etc. During the mine mining process, operators need to enter the mine to work. Due to the limited ventilation conditions inside the mine, a large amount of gas will accumulate, such as gas, CO2 gas, etc. The existence of these gases poses a great threat to the safety of operators. [0003] However, the existing mine alarm devices generally only have a gas alarm function, and the function is relatively single, and there are defects in the detection of CO2, NO2 and other gases. Contents of the invention [0004] In order to overcome the problems existing in the related technologies, the application provides a mine alarm device based on CO2 and NO2 detection, including a mine alarm device body and a monitori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/02E21F17/18
CPCG01N29/022E21F17/18
Inventor 肖小玉
Owner 肖小渝