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Gas sensing technology by negative difference method

A sensing technology, gas technology, applied in the field of innovative inventions, can solve problems such as large concentration range changes

Inactive Publication Date: 2006-07-12
田野 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] General gas sensors use CH 4 The gas sensor measures the gas, but because the gas is a mixed gas, the concentration range varies greatly, so the CH 4 There are many limitations and inconveniences in the use of gas sensors, which need to be improved

Method used

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Examples

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Embodiment approach

[0006] The present invention is an innovative invention related to a gas sensing technology, and its typical implementation is as follows:

[0007] (1) Measure N 2 and O 2 gas concentration.

[0008] (2) According to N 2 Calculate the reduction ratio between the normal concentration value and the current concentration value, and this value can be the gas concentration.

[0009] (3) According to the gas concentration and O in (2) 2 The current concentration value gives the explosion hazard factor.

[0010] Note: The calculation method can be analog operation or digital operation, and the output signal method is not limited, and it can be adjusted according to actual needs.

[0011] Through the above steps, the actually required gas concentration signal and explosion hazard indication signal can be given. The present invention can also increase CO 2 , inert gas and other gases with a large proportion and stable concentration in the air and CH 4 The measurement of the con...

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Abstract

The invention relates to an innovative gas sensing technique, which comprises: measuring N2, inertial gas and other stable-concentration gas in air and the concentration for O2, CO2 and CH4 as fuel gas; calculating and analyzing the measurement result to present the gas concentration information and the explosion danger coefficient. This invention overcomes the problems of single measured gas, low reliability for result and dead-zone in traditional CH4-type gas sensor, and can meet the request for safety production in mine.

Description

1. Technical field [0001] The invention relates to a gas sensing technology, especially an innovative invention that breaks through the traditional method and meets the safety production requirements of mines with a larger concentration measurement range. 2. Background technology [0002] General gas sensors use CH 4 The gas sensor measures the gas, but because the gas is a mixed gas, the concentration range varies greatly, so the CH 4 There are many limitations and inconveniences in the use of gas sensors, which need to be improved. 3. Contents of the invention [0003] The main purpose of the present invention is to provide a gas sensing technology, especially one that can achieve a larger gas concentration measurement range by changing the sensing method, so as to break through the design limitations of traditional gas sensors and increase the scope of application of gas sensors and reliability, innovative inventions that meet the needs of safe production. [0004] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N35/00
Inventor 田野田园
Owner 田野
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