CN103926210A - Device for detecting species of gases - Google Patents
Device for detecting species of gases Download PDFInfo
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- CN103926210A CN103926210A CN201410165517.6A CN201410165517A CN103926210A CN 103926210 A CN103926210 A CN 103926210A CN 201410165517 A CN201410165517 A CN 201410165517A CN 103926210 A CN103926210 A CN 103926210A
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- detection cavity
- infrared detection
- gas
- platinum
- infrared
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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, particularly about a kind of multiple types gas-detecting device for air quality is detected.
Background technology
Sensor based on certain principle can only detect certain class gas, and air quality monitoring need to detect multiple gases, therefore needs a plurality of sensors based on different principle just can complete the detection to multiple types gas.When the pick-up unit that uses a plurality of standalone sensors to form detects variety classes gas respectively, this pick-up unit has the shortcomings such as volume is large, cost is high, power consumption is many and be inconvenient to carry.
Summary of the invention
For the problems referred to above, the object of this invention is to provide the multiple types gas-detecting device that a kind of volume is little, cost is low, power consumption is few, be convenient for carrying.
For achieving the above object, the present invention takes following technical scheme: one kind of multiple class gas-detecting devices, is characterized in that: it comprises a platinum resistance calandria, semiconductor gas sensitization layer, an infrared detection cavity and an infrared remote receiver; On one end face of described platinum resistance calandria, be attached with described semi-conductor gas sensitive layer, the other end of described platinum resistance calandria is fixedly installed on the inside surface of described infrared detection cavity one end, and on the other end of described platinum resistance calandria, being fixedly connected with two lead-in wires, the other end of two described lead-in wires is all through an end face of described infrared detection cavity and connect external power source; Described infrared remote receiver is fixedly installed on the inside surface of the described infrared detection cavity other end, and two lead-in wires of described infrared remote receiver are through the other end of described infrared detection cavity and connect described external unit, and a side opening of described infrared detection cavity is provided with the air hole that detects gas for passing into.
Described platinum resistance calandria comprises a ceramic bases, two electrodes, some platinum heating plates and an insulation course; Be positioned at described ceramic bases two ends be fixedly installed one respectively described in electrode, two described lead-in wire one end connect two respectively described in electrode, two described lead-in wire other ends are all through an end face of described infrared detection cavity and connect external power source; Described in two between electrode, interval is fixedly installed some described platinum heating plates; Described insulation course be fixedly installed on two described 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 SNO
2doped precious metal forms, and noble metal adopts one or both in platinum and palladium.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention is because employing comprises platinum resistance calandria, semi-conductor gas sensitive layer, infrared detection cavity and infrared remote receiver, adopt platinum resistance calandria and semi-conductor gas sensitive layer to complete the detection of the various gas concentrations of based semiconductor type sensor detection, adopt platinum resistance calandria and infrared remote receiver to complete the detection of the various gas concentrations that detect based on infrared absorption type sensor, the gaseous species that therefore uses the present invention to detect is more.2, the present invention is owing to adopting platinum resistance calandria to realize the two function of the luminophor in the heater in semiconductor type sensor and infrared absorption type sensor in prior art, therefore more compact structure of the present invention, and volume is smaller and more exquisite, and the electric energy of consumption is still less.Based on above advantage, the present invention can be widely used in combustion gas detection, room air changes the field of gas detection such as wind detection, underground garage Detection of Air Quality, atmosphere pollution detection and automobile emission gas analyzer.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention
Fig. 2 is platinum resistance heating element structure schematic diagram of the present invention
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, multiple types gas-detecting device of the present invention comprises a platinum resistance calandria 1, semiconductor gas sensitization layer 2, an infrared detection cavity 3 and an infrared remote receiver 4.On one end face of platinum resistance calandria 1, be attached with semi-conductor gas sensitive layer 2, the other end of platinum resistance calandria 1 is fixedly installed on the inside surface of infrared detection cavity 3 one end, and on the other end of platinum resistance calandria 1, be fixedly connected with 5, two lead-in wire other ends of 5 of two lead-in wires all through an end face of infrared detection cavity 3 and connect external power source (not shown).Infrared remote receiver 4 is fixedly installed on the inside surface of infrared detection cavity 3 other ends, and two lead-in wires 5 of infrared remote receiver 4 pass the other end of infrared detection cavity 3 and connect external unit (not shown).One side opening of infrared detection cavity 3 is provided with air hole 6, is convenient to pass into detected gas.
In above-described embodiment, as shown in Figure 2, platinum resistance calandria 1 comprises a ceramic bases 11, two electrodes 12, some platinum heating plates 13 and an insulation course 14.Be positioned at ceramic bases 11 two ends and be fixedly installed respectively an electrode 12, be fixedly connected on the other end that on platinum resistance calandria 1 other end two lead-in wires 5 connect respectively 12, two lead-in wires 5 of two electrodes all through an end face of infrared detection cavity 3 and connect external power source; Between two electrodes 12, interval is fixedly installed some platinum heating plates 13.Insulation course 14 is fixedly installed on two electrodes 12 and some platinum heating plates 13.
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 SNO
2(tin ash) noble metal such as a small amount of platinum or palladium that adulterates forms.
Adopt the present invention to detect multiple gases, its testing process is:
First, by air hole 6, in infrared detection cavity 3, pass into gas to be detected.
Secondly, by going between 5 to 1 energising of platinum resistance calandria.1 pair of semiconductor gas sensitization layer 2 of platinum resistance calandria heats, make semi-conductor gas sensitive layer 2 reach uniform temperature, in the situation that semi-conductor gas sensitive layer 2 is temperature-resistant, the resistance value of semi-conductor gas sensitive layer 2 changes with the concentration change of gas to be detected, thereby completes the detection of the various gas concentrations of based semiconductor type sensor detection.
Finally, platinum resistance calandria 1 is as infrared light emission source, by changing the temperature of platinum resistance calandria 1, change the infrared light wavelength in infrared light emission source, after its infrared light sending contacts with gas to be detected in infrared detection cavity 3, the energy of gas absorption specific wavelength infrared light to be detected, the infrared light of the absorbed specific wavelength of energy is transmitted to infrared remote receiver 4, infrared remote receiver 4 changes the infrared light strength signal receiving into electric signal, thereby complete the detection of the various gas concentrations that detect based on infrared absorption type sensor, and by two lead-in wires 5 of infrared remote receiver 4, testing result is transferred to external unit.
The various embodiments described above are only for illustrating the present invention; wherein the structure of each parts, connected mode and method step etc. all can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (4)
1. one kind of multiple class gas-detecting devices, is characterized in that: it comprises a platinum resistance calandria, semiconductor gas sensitization layer, an infrared detection cavity and an infrared remote receiver; On one end face of described platinum resistance calandria, be attached with described semi-conductor gas sensitive layer, the other end of described platinum resistance calandria is fixedly installed on the inside surface of described infrared detection cavity one end, and on the other end of described platinum resistance calandria, being fixedly connected with two lead-in wires, the other end of two described lead-in wires is all through an end face of described infrared detection cavity and connect external power source; Described infrared remote receiver is fixedly installed on the inside surface of the described infrared detection cavity other end, and two lead-in wires of described infrared remote receiver are through the other end of described infrared detection cavity and connect described external unit, and a side opening of described infrared detection cavity is provided with the air hole that detects gas for passing into.
2. one kind of multiple class gas-detecting devices as claimed in claim 1, is characterized in that: described platinum resistance calandria comprises a ceramic bases, two electrodes, some platinum heating plates and an insulation course; Be positioned at described ceramic bases two ends be fixedly installed one respectively described in electrode, two described lead-in wire one end connect two respectively described in electrode, two described lead-in wire other ends are all through an end face of described infrared detection cavity and connect external power source; Described in two between electrode, interval is fixedly installed some described platinum heating plates; Described insulation course be fixedly installed on two described on electrode and some described platinum heating plates.
3. one kind of multiple class gas-detecting devices as claimed in claim 2, is characterized in that: the quantity of described platinum heating plate is set to three.
4. one kind of multiple class gas-detecting devices as described in claim 1 or 2 or 3, is characterized in that: described semi-conductor gas sensitive layer is by SNO
2doped precious metal forms, and noble metal adopts 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 |
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| CN103926210A true CN103926210A (en) | 2014-07-16 |
| CN103926210B CN103926210B (en) | 2017-01-11 |
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Cited By (5)
| 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 |
| CN114324220A (en) * | 2021-12-24 | 2022-04-12 | 安徽庆宇光电科技有限公司 | Motor vehicle tail gas collecting and detecting device on multi-lane road surface |
| CN114324220B (en) * | 2021-12-24 | 2024-04-26 | 安徽庆宇光电科技有限公司 | Motor vehicle tail gas collecting and detecting device on multi-lane road surface |
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| JPH08112A (en) * | 1994-06-22 | 1996-01-09 | Fumiyuki Kokubo | Method for constructing lavatory floor for pig house and apparatus used for the same method |
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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 |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08112A (en) * | 1994-06-22 | 1996-01-09 | Fumiyuki Kokubo | Method for constructing lavatory floor for pig house and apparatus used for the same method |
| JPH1183774A (en) * | 1997-09-05 | 1999-03-26 | New Cosmos Electric Corp | Discrimination method for gas kind and gas density measurement method |
| 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 |
Cited By (5)
| 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 |
| CN114324220A (en) * | 2021-12-24 | 2022-04-12 | 安徽庆宇光电科技有限公司 | Motor vehicle tail gas collecting and detecting device on multi-lane road surface |
| CN114324220B (en) * | 2021-12-24 | 2024-04-26 | 安徽庆宇光电科技有限公司 | Motor vehicle tail gas collecting and detecting device on multi-lane road surface |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103926210B (en) | 2017-01-11 |
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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. |
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