CN103926210B - Device for detecting species of gases - Google Patents
Device for detecting species of gases Download PDFInfo
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- CN103926210B CN103926210B CN201410165517.6A CN201410165517A CN103926210B CN 103926210 B CN103926210 B CN 103926210B CN 201410165517 A CN201410165517 A CN 201410165517A CN 103926210 B CN103926210 B CN 103926210B
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- detection cavity
- infrared
- infrared detection
- gas
- platinum
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Abstract
The invention relates to a device for detecting species of gases. The device is characterized by comprising a platinum resistor heating body, a semiconductor gas sensitive layer, an infrared detection cavity and an infrared receiver, wherein the semiconductor gas sensitive layer is attached to one end face of the platinum resistor heating body; the other end face is fixedly arranged on the inner surface of one end of the infrared detection cavity; two leads are fixedly connected; the other end of each of the two leads passes through one end face of the infrared detection cavity and is connected with an external power supply; the infrared receiver is fixedly arranged on the inner surface of the other end of the infrared detection cavity; the two leads of the infrared receiver pass through the other end face of the infrared detection cavity and are connected with external equipment; vent holes are formed in one side of the infrared detection cavity. The device has the advantages of being small in volume, low in cost, little in power consumption, convenient to carry and the like. Therefore, the device can be widely applied to the fields of gas detection, such as fuel gas detection, indoor air exchange detection, air quality detection of an underground garage, air pollutant detection, vehicular exhaust detection and the like.
Description
Technical field
The present invention relates to a kind of gas-detecting device, especially with regard to a kind of multiple for what air quality was detected
Class gas-detecting device.
Background technology
Sensor based on certain principle can only detect certain class gas, and air quality monitoring needs to examine multiple gases
Survey, it is therefore desirable to multiple sensors based on different principle just can complete the detection to multiple types gas.Use multiple solely
The detection device of sensor of writing a biography composition is when detecting variety classes gas respectively, this detection device have volume big,
Cost is high, power consumption is many and is inconvenient to shortcomings such as carrying.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide that a kind of volume is little, low cost, power consumption are few, be convenient for carrying
Multiple types gas-detecting device.
For achieving the above object, the present invention takes techniques below scheme: one kind of multiple class gas-detecting devices, its feature
It is: it includes a platinum resistance calandria, semiconductor gas sensitization layer, an infrared detection cavity and an infrared receiver
Device；Described semi-conductor gas sensitive layer, described platinum resistance calandria it is attached with on the end face of described platinum resistance calandria
Other end be fixedly installed on the inner surface of described infrared detection cavity one end, and at described platinum resistance calandria
Two lead-in wires of fixing connection on other end, the other end of two described lead-in wires both passes through the one of described infrared detection cavity
End face also connects external power source；Described infrared remote receiver is fixedly installed on the inner surface of the described infrared detection cavity other end
On, and two of described infrared remote receiver lead-in wires through the other end of described infrared detection cavity and connect described outside
Equipment, the one side of described infrared detection cavity offers the passage for being passed through detected gas.
Described platinum resistance calandria includes a ceramic bases, two electrodes, some platinum heating plates and an insulating barrier；It is positioned at
Described ceramic bases two ends are fixedly installed electrode described in respectively, and two described lead-in wire one end connect electricity described in two respectively
Pole, two described lead-in wire other ends both pass through the end face of described infrared detection cavity and connect external power source；It is positioned at two
Between described electrode, interval is fixedly installed some described platinum heating plates；Described insulating barrier is fixedly installed on described in two
On electrode and some described platinum heating plates.
The quantity of described platinum heating plate is set to three.
Described semi-conductor gas sensitive layer is by SNO2Doped precious metal is constituted, and noble metal uses the one or two in platinum and palladium
Kind.
Due to the fact that and take above technical scheme, it has the advantage that 1, due to the fact that employing includes platinum resistance
Calandria, semi-conductor gas sensitive layer, infrared detection cavity and infrared remote receiver, use platinum resistance calandria and partly lead
Bromhidrosis body sensitive layer completes the detection of various gas concentrations based on semiconductor type sensor detection, uses platinum resistance heating
Body and infrared remote receiver complete the detection of various gas concentrations based on the detection of infrared absorption type sensor, therefore use this
The gaseous species of invention detection is more.2, due to the fact that employing platinum resistance calandria realizes semi-conductor type in prior art
Heater in sensor and the function of both the luminous bodys in infrared absorption type sensor, therefore the structure of the present invention is more
Compact, volume is smaller and more exquisite, and the electric energy of consumption is less.Based on above advantage, the present invention can be widely applied to combustion gas inspection
Survey, room air changes wind detection, underground garage Detection of Air Quality, atmospheric pollution analyte detection and automobile emission gas analyzer etc.
Field of gas detection.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention
Fig. 2 is the platinum resistance heating element structure schematic diagram of the present invention
Detailed description of the invention
With embodiment, the present invention is described in detail below in conjunction with the accompanying drawings.
As it is shown in figure 1, multiple types gas-detecting device of the present invention includes a platinum resistance calandria 1, semiconductor gas
Sensitive layer 2, one infrared detection cavity 3 and an infrared remote receiver 4.Half it is attached with on the end face of platinum resistance calandria 1
Conductor gas sensitive layer 2, the other end of platinum resistance calandria 1 is fixedly installed on the interior of infrared detection cavity 3 one end
On surface, and fixing on the other end of platinum resistance calandria 1 connect two lead-in wires 5, another of two lead-in wires 5
End both passes through the end face of infrared detection cavity 3 and connects external power source (not shown).Infrared remote receiver 4 is fixed
It is arranged on the inner surface of infrared detection cavity 3 other end, and two lead-in wires 5 of infrared remote receiver 4 are through infrared inspection
Survey the other end of cavity 3 and connect external equipment (not shown).The one side of infrared detection cavity 3 offers
Passage 6, it is simple to be passed through detected gas.
In above-described embodiment, if as in figure 2 it is shown, platinum resistance calandria 1 includes ceramic bases 11, two electrode 12
Dry platinum heating plate 13 and an insulating barrier 14.It is positioned at ceramic bases 11 two ends and is fixedly installed an electrode 12 respectively, Gu
Surely two lead-in wires 5 being connected on platinum resistance calandria 1 other end connect two electrodes 12 respectively, two lead-in wires 5
The other end both passes through the end face of infrared detection cavity 3 and connects external power source；Between two electrodes 12, interval is solid
Surely some platinum heating plates 13 it are provided with.Insulating barrier 14 is fixedly installed on two electrodes 12 and some platinum heating plates 13
On.
In above-described embodiment, the quantity of platinum heating plate 13 is set to three.
In above-described embodiment, semi-conductor gas sensitive layer 2 is by SNO2(tin ash) adulterates your gold such as a small amount of platinum or palladium
Belong to and constituting.
Using the present invention to detect multiple gases, its detection process is:
First, in infrared detection cavity 3, gas to be detected it is passed through by passage 6.
Secondly, it is energized to platinum resistance calandria 1 by lead-in wire 5.Platinum resistance calandria 1 is to semi-conductor gas sensitive layer
2 heat, and make semi-conductor gas sensitive layer 2 reach uniform temperature, temperature-resistant at semi-conductor gas sensitive layer 2
In the case of, the resistance value of semi-conductor gas sensitive layer 2 changes with the concentration change of gas to be detected, thus completes
The detection of various gas concentrations based on semiconductor type sensor detection.
Finally, platinum resistance calandria 1, as infrared light emission source, is changed by the temperature changing platinum resistance calandria 1
Redden the infrared light wavelength of outside line luminous source, and its infrared light sent connects with gas to be detected in infrared detection cavity 3
After touch, the energy of GAS ABSORPTION specific wavelength infrared light to be detected, the infrared light of the absorbed specific wavelength of energy is propagated
To infrared remote receiver 4, the infrared light strength signal received is changed into the signal of telecommunication, thus completes by infrared remote receiver 4
The detection of various gas concentrations based on the detection of infrared absorption type sensor, and by two lead-in wires of infrared remote receiver 4
Testing result is transferred to external equipment by 5.
The various embodiments described above are merely to illustrate the present invention, and the structure of the most each parts, connected mode and method step etc. are all
Can be varied from, every equivalents carried out on the basis of technical solution of the present invention and improvement, the most should not
Get rid of outside protection scope of the present invention.
Claims (3)
1. one kind of multiple class gas-detecting devices, it is characterised in that: it includes a platinum resistance calandria, semiconductor gas
Body sensitive layer, an infrared detection cavity and an infrared remote receiver；Adhere on the end face of described platinum resistance calandria
Stating semi-conductor gas sensitive layer, the other end of described platinum resistance calandria is fixedly installed on described infrared detection cavity one
On the inner surface of end, and two lead-in wires of fixing connection on the other end of described platinum resistance calandria；Described infrared connect
Receive device to be fixedly installed on the inner surface of the described infrared detection cavity other end, and two lead-in wires of described infrared remote receiver
Through the other end of described infrared detection cavity and connect external equipment, the one side of described infrared detection cavity is offered
There is the passage for being passed through detected gas；
Described platinum resistance calandria includes a ceramic bases, two electrodes, some platinum heating plates and an insulating barrier；It is positioned at
Described ceramic bases two ends are fixedly installed electrode described in respectively, and two described lead-in wire one end connect electricity described in two respectively
Pole, two described lead-in wire other ends both pass through the end face of described infrared detection cavity and connect external power source；It is positioned at two
Between described electrode, interval is fixedly installed some described platinum heating plates；Described insulating barrier is fixedly installed on described in two
On electrode and some described platinum heating plates.
2. one kind of multiple class gas-detecting devices as claimed in claim 1, it is characterised in that: described platinum heating plate
Quantity be set to three.
3. one kind of multiple class gas-detecting devices as claimed in claim 1 or 2, it is characterised in that: described quasiconductor
Gas sensitization layer is by SNO2Doped precious metal is constituted, and noble metal uses one or both in platinum and palladium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410165517.6A CN103926210B (en) | 2014-04-23 | 2014-04-23 | Device for detecting species of gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410165517.6A CN103926210B (en) | 2014-04-23 | 2014-04-23 | Device for detecting species of gases |
Publications (2)
| Publication Number | Publication Date |
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| CN103926210A CN103926210A (en) | 2014-07-16 |
| CN103926210B true CN103926210B (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410165517.6A Active CN103926210B (en) | 2014-04-23 | 2014-04-23 | Device for detecting species of gases |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730116A (en) * | 2015-02-17 | 2015-06-24 | 杭州麦德乐传感科技有限公司 | Compound gas sensor |
| CN107192684A (en) * | 2016-03-14 | 2017-09-22 | 热映光电股份有限公司 | Gas concentration arrangement for detecting and its method for detecting |
| CN109946233A (en) * | 2019-04-17 | 2019-06-28 | 湖南五凌电力科技有限公司 | A kind of resistance to oil seal electronic laser nose combine detection gas chamber |
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| CN201628682U (en) * | 2010-01-18 | 2010-11-10 | 郑州炜盛电子科技有限公司 | Mini anti-explosion multi-gas infrared sensor |
| CN101923052A (en) * | 2009-06-17 | 2010-12-22 | 中国科学院微电子研究所 | Infrared spectrum type MEMES gas sensitive sensor based on filter structure light splitting |
| CN202049126U (en) * | 2011-04-13 | 2011-11-23 | 刘震国 | Resistance type nitrogen dioxide sensor and instrument manufactured by same |
| CN203870018U (en) * | 2014-04-23 | 2014-10-08 | 南车二七车辆有限公司 | Detecting device for various kinds of gas |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3337319B2 (en) * | 1994-06-22 | 2002-10-21 | 文之 小久保 | Method of constructing a toilet floor in a piggery and equipment used in the method |
| JPH1183774A (en) * | 1997-09-05 | 1999-03-26 | New Cosmos Electric Corp | Discrimination method for gas kind and gas density measurement method |
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2014
- 2014-04-23 CN CN201410165517.6A patent/CN103926210B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923052A (en) * | 2009-06-17 | 2010-12-22 | 中国科学院微电子研究所 | Infrared spectrum type MEMES gas sensitive sensor based on filter structure light splitting |
| CN201628682U (en) * | 2010-01-18 | 2010-11-10 | 郑州炜盛电子科技有限公司 | Mini anti-explosion multi-gas infrared sensor |
| CN202049126U (en) * | 2011-04-13 | 2011-11-23 | 刘震国 | Resistance type nitrogen dioxide sensor and instrument manufactured by same |
| CN203870018U (en) * | 2014-04-23 | 2014-10-08 | 南车二七车辆有限公司 | Detecting device for various kinds of gas |
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| CN103926210A (en) | 2014-07-16 |
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Address after: 100072 No. 1 Zhangguozhuangjia, Fengtai District, Beijing Patentee after: CRRC BEIJING ERQI VEHICLE Co.,Ltd. Address before: 100072 No. 1 Zhangguozhuangjia, Fengtai District, Beijing Patentee before: CSR Erqi Vehicle Co.,Ltd. |
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Effective date of registration: 20190605 Address after: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36 Patentee after: CRRC QIQIHAR ROLLING STOCK Co.,Ltd. Address before: 100072 No. 1 Zhangguozhuangjia, Fengtai District, Beijing Patentee before: CRRC BEIJING ERQI VEHICLE Co.,Ltd. |