CN101975806A - Combined type gas sensor and gas detection method thereof - Google Patents
Combined type gas sensor and gas detection method thereof Download PDFInfo
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- CN101975806A CN101975806A CN2010102587360A CN201010258736A CN101975806A CN 101975806 A CN101975806 A CN 101975806A CN 2010102587360 A CN2010102587360 A CN 2010102587360A CN 201010258736 A CN201010258736 A CN 201010258736A CN 101975806 A CN101975806 A CN 101975806A
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Abstract
The invention provides a combined type gas sensor and a gas detection method thereof. The sensor comprises a gas sensor and a heat pyrolyzer; the easily detected gas outlet of the pyrolyzer is communicated with the gas detection inlet of the gas sensor. The method comprises the following steps: heat pyrolyzing the gas to be detected through the heat pyrolyzer to generate easily detected gas; detecting the easily detected gas through the gas sensor to detect the concentration of the easily detected gas; according to the ratio of generating the easily detected gas by the heat pyrolyzing gas in unit,, converting the concentration of the easily detected gas to obtain the concentration of the easily detected gas. The sensor converts the special gas originally not easy to directly detect into the easily detected gas by a heat pyrolyzing theory, detects by utilizing the corresponding gas sensor, and carries out the corresponding data conversion. Through selecting proper heat pyrolyzer and gas sensor, the method can detect most of gas, and greatly expand the application of gas detection.
Description
Technical field
The present invention relates to a kind of gas sensor, specifically, relate to a kind of combined type gas sensor and gas detection method thereof.
Background technology
At present, use the conventional gas sensor, detect inert gas, big molecule organic steam, have many difficulties when being difficult for the special gas such as poison gas of chemically reactive as the gas sensor of types such as infrared, galvanochemistry, catalysis, semiconductor, heat conduction, wherein, the gas sensor of infrared, catalysis, heat conduction type is not suitable for light concentration gas and detects, the gas sensor of semiconductor, electrochemical type is not suitable for inert gas and detects, and is not suitable for the high concentration gas detection yet.
For this reason, people are seeking a kind of desirable technical solution always.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of easy to use, highly sensitive, precision is high, sensing range is wide combined type gas sensor is provided, the gas detection method of simple, the practical combined type gas sensor of a kind of operation steps also is provided.
The technical solution adopted in the present invention is as follows: a kind of combined type gas sensor, and it includes gas sensor and heat cracker, and the easy detected gas outlet of described heat cracker is communicated with the gas detection import of described gas sensor.
Based on above-mentioned, this combined type gas sensor also includes gas flow control device, and the gas flow outlet of described gas flow control device is communicated with the gas feed to be measured of described heat cracker.
Based on above-mentioned, described gas sensor be in electrochemical gas sensor, infrared gas sensor, thermally conductive gas body sensor, semiconductor gas sensor, the catalytic gas sensor any or a plurality of.
A kind of gas detection method of combined type gas sensor, it may further comprise the steps:
Step 1, gas to be measured is carried out thermal cracking through heat cracker, generate easy detected gas;
Step 2, easy detected gas is detected through gas sensor, record the concentration of easy detected gas;
Step 3, generate the ratio of easy detected gas, the concentration of easy detected gas through converting, is learnt gas concentration to be measured according to unit gas generation to be measured thermal cracking.
Based on above-mentioned, in step 1, gas to be measured carried out specific discharge control through gas flow control device after, be input to heat cracker again.
Based on above-mentioned, in step 2, after easy detected gas specific discharge to be generated is stable, detect the concentration of easy detected gas again with gas sensor.
The relative prior art of the present invention has outstanding substantive distinguishing features and marked improvement, specifically, the present invention utilizes the thermal cracking principle, originally the inert gas, the big molecule organic steam that are difficult for directly detecting, the special gas such as poison gas that are difficult for chemically reactive are converted into the gas of easy detection earlier, re-use corresponding gas sensor and detect, and carry out corresponding data reduction and get final product; This method can detect most gases by selecting suitable heat cracker and gas sensor, has expanded the scope of gas detection greatly.
Description of drawings
Fig. 1 is the structural representation of combined type gas sensor of the present invention.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
As shown in Figure 1, a kind of combined type gas sensor, it includes housing 1, is installed in gas sensor 2 and heat cracker 3 in the housing 1, is installed in inlet suction port 10, air outlet adapter, air guide pipeline, housing cover 4 and circuit board 9 on the housing 1;
Wherein, described inlet suction port 10 is communicated with the gas feed to be measured of described heat cracker 3, the easy detected gas outlet of described heat cracker 3 is by the gas detection import of the described gas sensor 2 of described air guide pipeline connection, described air outlet adapter is communicated with the gas detection outlet of described gas sensor 2, described circuit board 9 connects described gas sensor 2 and described heat cracker 3 respectively, and described housing cover 4 is installed between circuit board 9 and gas sensor 2, the heat cracker 3;
Described air guide pipeline comprises two angle couplings being connected in turn 5, two adapters 6, two nuts 7 and gas conduits 8, wherein, two angle couplings 5 are installed on the housing 1 and are communicated with the gas detection import of described gas sensor 2 respectively and the easy detected gas outlet of described heat cracker 3.
Based on above-mentioned, this combined type gas sensor also includes gas flow control device, and the gas flow outlet of described gas flow control device is communicated with the gas feed to be measured of described heat cracker by described inlet suction port 10.
Based on above-mentioned, described gas sensor be in electrochemical gas sensor, infrared gas sensor, thermally conductive gas body sensor, semiconductor gas sensor, the catalytic gas sensor any or a plurality of.
A kind of gas detection method of combined type gas sensor, it may further comprise the steps:
Step 1, gas to be measured is carried out thermal cracking through heat cracker, generate easy detected gas;
Step 2, easy detected gas is detected through gas sensor, record the concentration of easy detected gas;
Step 3, generate the ratio of easy detected gas, the concentration of easy detected gas through converting, is learnt gas concentration to be measured according to unit gas generation to be measured thermal cracking.
Based on above-mentioned, gas to be measured carried out specific discharge control through gas flow control device after, be input to heat cracker again; After easy detected gas specific discharge to be generated is stable, detect the concentration of easy detected gas again with gas sensor; By this step, can improve the accuracy of detection of gas greatly.
The present invention is encapsulated in the housing that a corrosion resistance material makes by heat cracker, the high sensitivity gas sensor that will have high catalytic property and thermal stability, form a combined type gas sensor in conjunction with attached structure member, gas to be measured is earlier through heat cracker generation thermal cracking during use, generate the gas that easily detects, and then detect, and carry out corresponding data reduction and get final product by the gas sensor that is connected to the rear end; The gas sensor that adopts this method to make efficiently solves the difficult problem that the conventional gas sensor is difficult for detecting inert gas, big molecule organic steam, special gas such as poison gas that chemical property is stable, has solved the problem of the range limited system of conventional gas sensor simultaneously.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (6)
1. a combined type gas sensor includes gas sensor, it is characterized in that: this combined type gas sensor also includes heat cracker, and the easy detected gas outlet of described heat cracker is communicated with the gas detection import of described gas sensor.
2. combined type gas sensor according to claim 1 is characterized in that: this combined type gas sensor also includes gas flow control device, and the gas flow outlet of described gas flow control device is communicated with the gas feed to be measured of described heat cracker.
3. combined type gas sensor according to claim 1 and 2 is characterized in that: described gas sensor be in electrochemical gas sensor, infrared gas sensor, thermally conductive gas body sensor, semiconductor gas sensor, the catalytic gas sensor any or a plurality of.
4. the gas detection method of the described combined type gas sensor of claim 1 is characterized in that, this method may further comprise the steps:
Step 1, gas to be measured is carried out thermal cracking through heat cracker, generate easy detected gas;
Step 2, easy detected gas is detected through gas sensor, record the concentration of easy detected gas;
Step 3, generate the ratio of easy detected gas, the concentration of easy detected gas through converting, is learnt gas concentration to be measured according to unit gas generation to be measured thermal cracking.
5. according to the gas detection method of the described combined type gas sensor of claim 4, it is characterized in that: in step 1, gas to be measured carried out specific discharge control through gas flow control device after, be input to heat cracker again.
6. according to the gas detection method of the described combined type gas sensor of claim 5, it is characterized in that: in step 2, after easy detected gas specific discharge to be generated is stable, detect the concentration of easy detected gas again with gas sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010102587360A CN101975806A (en) | 2010-08-20 | 2010-08-20 | Combined type gas sensor and gas detection method thereof |
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| CN2010102587360A CN101975806A (en) | 2010-08-20 | 2010-08-20 | Combined type gas sensor and gas detection method thereof |
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| CN101975806A true CN101975806A (en) | 2011-02-16 |
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| CN2010102587360A Pending CN101975806A (en) | 2010-08-20 | 2010-08-20 | Combined type gas sensor and gas detection method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105115928A (en) * | 2015-09-27 | 2015-12-02 | 电子科技大学中山学院 | Composite sensor |
| CN108732212A (en) * | 2018-05-23 | 2018-11-02 | 重庆海士测控技术有限公司 | A kind of manufacturing method, sensor and its application of manifold effect detection integrated gas sensors manufacturing method |
| CN109342347A (en) * | 2018-11-05 | 2019-02-15 | 安徽建筑大学 | Multi-mode gas analysis device and analysis method |
| CN109716116A (en) * | 2016-08-18 | 2019-05-03 | 内华达纳米技术系统公司 | System and method for determining at least one property of material |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115928A (en) * | 2015-09-27 | 2015-12-02 | 电子科技大学中山学院 | Composite sensor |
| CN109716116A (en) * | 2016-08-18 | 2019-05-03 | 内华达纳米技术系统公司 | System and method for determining at least one property of material |
| US11262321B2 (en) | 2016-08-18 | 2022-03-01 | Nevada Nanotech Systems Inc. | Systems and methods for determining at least one property of a material |
| CN109716116B (en) * | 2016-08-18 | 2022-06-14 | 内华达纳米技术系统公司 | System and method for determining at least one property of a material |
| US11709142B2 (en) | 2016-08-18 | 2023-07-25 | Nevada Nanotech Systems Inc. | Methods for determining at least one property of a material |
| CN108732212A (en) * | 2018-05-23 | 2018-11-02 | 重庆海士测控技术有限公司 | A kind of manufacturing method, sensor and its application of manifold effect detection integrated gas sensors manufacturing method |
| CN108732212B (en) * | 2018-05-23 | 2020-12-15 | 哈尔滨工程大学 | Manufacturing method, sensor and application of a method for manufacturing a multi-effect detection integrated gas sensor |
| CN109342347A (en) * | 2018-11-05 | 2019-02-15 | 安徽建筑大学 | Multi-mode gas analysis device and analysis method |
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Application publication date: 20110216 |