CN204330661U - A kind of semiconductor gas sensor - Google Patents
A kind of semiconductor gas sensor Download PDFInfo
- Publication number
- CN204330661U CN204330661U CN201420574382.4U CN201420574382U CN204330661U CN 204330661 U CN204330661 U CN 204330661U CN 201420574382 U CN201420574382 U CN 201420574382U CN 204330661 U CN204330661 U CN 204330661U
- Authority
- CN
- China
- Prior art keywords
- symmetrical
- sno
- sintered body
- gas sensor
- semiconductor gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a kind of semiconductor gas sensor, comprise plastic feet, described plastic feet is provided with symmetrical measurement electrode, symmetrical extraction electrode, connected by plain conductor between described symmetrical measurement electrode, connected by heater strip between described symmetrical extraction electrode, described SnO
2sintered body is arranged on plain conductor and heater strip, and described plastic feet and stainless steel wire guard form enclosed construction.The utility model structure is simple, cheap for manufacturing cost, fast response time, highly sensitive.
Description
Technical field
The utility model relates to a kind of semiconductor devices, particularly relates to a kind of semiconductor gas sensor.
Background technology
The application of gas sensor mainly contains: the detection of the detection of CO gas, the detection of methane gas, coal gas, freon Slaughter 11, R12 Li detect, exhale in the detection of ethanol, the detection of human oral cavity halitosis etc.It is by gaseous species and convert electric signal to concentration dependent information and just can obtain and gas to be measured there is the relevant information of situation thus can carry out detecting, monitor, report to the police to consist of interface circuit and computing machine and automatically detect, control and warning system in the environment according to the power of these electric signal.
What current reality use was maximum is semiconductor gas sensor, but because existing gas-sensitive sensor structure is complicated, response speed is slow, sensitivity is low, significantly limit the application of semiconductor gas sensing device.
Utility model content
Technical problem to be solved in the utility model is to provide that a kind of structure is simple, cheap for manufacturing cost, fast response time, highly sensitive gas sensor.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of semiconductor gas sensor, comprise plastic feet, described plastic feet is provided with symmetrical measurement electrode, symmetrical extraction electrode, connected by plain conductor between described symmetrical measurement electrode, connected by heater strip between described symmetrical extraction electrode, described SnO
2sintered body is arranged on plain conductor and heater strip, and described plastic feet and stainless steel wire guard form enclosed construction.
Described SnO
2sintered body is used for, to the absorption of gas and release, working as SnO
2when sintered body absorption or release gas, quality and conductance can change, according to the change of gas concentration, and SnO
2sintered body conductance generation respective change, thus as measured quantity, gas is monitored.
On the basis of technique scheme, the utility model can also do following improvement.
Further, described heater strip is arranged at SnO
2sintered body is interior or be arranged at SnO
2outside sintered body, described heater strip is arranged at SnO
2in sintered body, be conducive to shortening the heat time, thus promote response speed, but packaging technology is more complicated.
Further, described SnO
2be provided with symmetrical mensuration resistance in sintered body, described symmetry measures resistance according to SnO
2the change of sintered body conductance and changing, thus finally realize gas concentration and be converted into electric signal and export.
Further, described symmetry measures resistance one end and symmetrical measurement Electrode connection, and one end is connected with symmetrical extraction electrode, for SnO by heating wire
2the output of sintered body conducting and electric signal.
The beneficial effects of the utility model are: structure is simple, cheap for manufacturing cost, fast response time, highly sensitive.
Accompanying drawing explanation
Fig. 1 is a kind of semiconductor gas sensor structural representation of the utility model;
Fig. 2 is a kind of semiconductor gas sensor SnO of the utility model
2sintered body structure schematic diagram;
In accompanying drawing, the list of parts representated by each label is as follows: 1, plastic feet, and 2, symmetrical extraction electrode, 3, stainless steel wire guard, 4, SnO
2sintered body, 5, heater strip, 6, symmetrical measurement electrode, 7, plain conductor, 8, symmetrically measure resistance.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, a kind of semiconductor gas sensor, comprises plastic feet 1, described plastic feet 1 is provided with symmetrical measurement electrode 6, symmetrical extraction electrode 2, connected by plain conductor 7 between described symmetrical measurement electrode 6, connected by heater strip 5 between described symmetrical extraction electrode 2, described SnO
2sintered body 4 is arranged on plain conductor 7 and heater strip 5, and described plastic feet 1 forms enclosed construction with stainless steel wire guard 3.
As shown in Figure 2, described SnO
2sintered body 4, for the absorption of gas and release, works as SnO
2when sintered body 4 adsorbs or discharges gas, quality and conductance can change, according to the change of gas concentration, and SnO
2sintered body 4 conductance generation respective change, thus as measured quantity, gas is monitored.
Described heater strip 5 is arranged at SnO
2sintered body 4 is interior or be arranged at SnO
2outside sintered body 4, described heater strip 5 is arranged at SnO
2in sintered body 4, be conducive to shortening the heat time, thus promote response speed, but packaging technology is more complicated; Described SnO
2be provided with symmetrical mensuration resistance 8 in sintered body 4, described symmetry measures resistance 8 according to SnO
2the change of sintered body 4 conductance and changing, thus finally realize gas concentration and be converted into electric signal and export; Described symmetry measures resistance 8 one end and is connected with symmetrical measurement electrode 2, and one end is connected, for SnO with symmetrical extraction electrode 6 by heating wire 5
2the output of sintered body 4 conducting and electric signal.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a semiconductor gas sensor, is characterized in that, comprises plastic feet, described plastic feet is provided with symmetrical measurement electrode, symmetrical extraction electrode, connected by plain conductor between described symmetrical measurement electrode, connected by heater strip between described symmetrical extraction electrode, described SnO
2sintered body is arranged on plain conductor and heater strip, and described plastic feet and stainless steel wire guard form enclosed construction.
2. a kind of semiconductor gas sensor according to claim 1, it is characterized in that, described heater strip is arranged at SnO
2sintered body is interior or be arranged at SnO
2outside sintered body.
3. a kind of semiconductor gas sensor according to claim 1, is characterized in that, described SnO
2symmetrical mensuration resistance is provided with in sintered body.
4. a kind of semiconductor gas sensor according to claim 3, is characterized in that, described symmetry measures resistance one end and symmetrical measurement Electrode connection, and one end is connected with symmetrical extraction electrode by heating wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420574382.4U CN204330661U (en) | 2014-09-30 | 2014-09-30 | A kind of semiconductor gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420574382.4U CN204330661U (en) | 2014-09-30 | 2014-09-30 | A kind of semiconductor gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204330661U true CN204330661U (en) | 2015-05-13 |
Family
ID=53167010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420574382.4U Expired - Fee Related CN204330661U (en) | 2014-09-30 | 2014-09-30 | A kind of semiconductor gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204330661U (en) |
-
2014
- 2014-09-30 CN CN201420574382.4U patent/CN204330661U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20150930 |
|
| EXPY | Termination of patent right or utility model |