CN203365368U - Semi-conductor gas sensor with temperature compensation function - Google Patents
Semi-conductor gas sensor with temperature compensation function Download PDFInfo
- Publication number
- CN203365368U CN203365368U CN2013201945659U CN201320194565U CN203365368U CN 203365368 U CN203365368 U CN 203365368U CN 2013201945659 U CN2013201945659 U CN 2013201945659U CN 201320194565 U CN201320194565 U CN 201320194565U CN 203365368 U CN203365368 U CN 203365368U
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- gas
- gas sensor
- electrode
- temperature compensation
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Abstract
The utility model provides a semi-conductor gas sensor with a temperature compensation function, and relates to the technical field of gas sensors. The semi-conductor gas sensor comprises a bottom casing, an upper cover, a gas-sensitive element, a heating wire arranged in the gas-sensitive element and a coil, wherein the gas-sensitive element is wound with the coil; the bottom casing is provided with wire leading holes; the upper cover is provided with a ventilated cover; both ends of the heating wire are connected with an electrode of a power supply respectively; and one end of the coil is connected with a gas-sensitive detection electrode. The semi-conductor gas sensor with the temperature compensation function is characterized by further comprising a thermal resistor, one end of the thermal resistor is electrically connected to one electrode of the power supply through a wire, and the other end of the thermal resistor is connected with a temperature detection electrode. With the adoption of the thermal resistor, the environment temperature can be accurately detected by the thermal resistor when the temperature of the detected environment changes, and then, the concentration of to-be-detected gas in the environment can be accurately calculated in combination of a detection signal of the gas sensor.
Description
Technical field
The utility model relates to the gas sensor technical field, relates in particular to a kind of temperature compensation semiconductor gas sensor.
Background technology
Gas sensor is a kind of sensor that detects specific gas concentration.General a large amount of uses be semiconductor gas sensor.After gas sensor adsorbs gas to be measured, its bulk resistor can change.The gas concentration difference, the bulk resistor intensity of variation of gas sensor is also different.The bulk resistor that detects gas sensor by external circuit changes the concentration that can extrapolate tested gas.
But, when environment temperature changes, the sensitivity of current this gas sensor and indicating value can be different, the gas index in can accurately testing environment.
The utility model content
The purpose of this utility model is to provide a kind of temperature compensation semiconductor gas sensor.
The utility model is achieved through the following technical solutions: the temperature compensation semiconductor gas sensor, comprise drain pan, upper cover, gas sensory coating, heater strip and magnetic test coil, described drain pan is provided with fairlead, described upper cover is provided with ventilating cover, the two ends of described heater strip connect respectively an electrode of power supply, and an end of described coil connects an air-sensitive detecting electrode; Its improvements are, also comprise thermistor, and described thermistor one end is electrically connected at one of them electrode of described power supply by wire, and the other end of described thermistor connects a temperature detection electrode.Described drain pan also is provided with bleeder port.
Thermistor one end is electrically connected at a wherein metal electrode of an end of gas sensor by wire, and the other end of thermistor connects ground wire.This thermistor can accurately the testing environment temperature, then, in conjunction with the detection signal of gas sensor, can accurately calculate the concentration of gas to be measured in environment.
The accompanying drawing explanation
Fig. 1 is decomposition texture schematic diagram of the present utility model;
Fig. 2 is one-piece construction schematic diagram of the present utility model;
Fig. 3 is electrical block diagram of the present utility model.
Reference numeral: 1, drain pan; 2, upper cover; 3, gas sensory coating; 4, heater strip; 5, magnetic test coil; 6, thermistor; 11, fairlead; 12, bleeder port; 21, ventilating cover.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the utility model is described further:
Shown in Fig. 1 and Fig. 2, the temperature compensation semiconductor gas sensor, comprise the housing that drain pan 1 and upper cover 2 form, and is provided with fairlead 11 and bleeder port 12 on drain pan 1.Be provided with ventilating cover 21 on upper cover 2.
Shown in Fig. 1 and Fig. 3, the semiconductor gas sensor of temperature compensation comprises gas sensory coating 3, be placed in the heater strip 4 in gas sensory coating 3 and be wound in the magnetic test coil 5 of described gas sensory coating 3 outsides, described drain pan 1 is provided with fairlead 11, described upper cover 2 is provided with ventilating cover 21, the two ends of described heater strip 4 connect respectively an electrode of power supply, and an end of described magnetic test coil 5 connects an air-sensitive detecting electrode; Also comprise thermistor 6, described thermistor 6 one ends are electrically connected at one of them electrode of described power supply by wire, and the other end of described thermistor 6 connects a temperature detection electrode.
Described thermistor 6 one ends are electrically connected at one of them electrode of described power supply by wire, the other end of described thermistor 6 connects a temperature detection electrode.By this thermistor 6, when in detected environment, temperature changes, this thermistor 6 can accurately the testing environment temperature, then, in conjunction with the detection signal of gas sensor, can accurately calculate the concentration of gas to be measured in environment.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the utility model is not limited to embodiment disclosed and described above, to modifications and changes more of the present utility model, also should fall in the protection domain of claim of the present utility model.In addition, although used some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (2)
1. temperature compensation semiconductor gas sensor, comprise drain pan, upper cover, gas sensory coating, heater strip, magnetic test coil and thermistor, described drain pan is provided with fairlead, upper cover is provided with ventilating cover, the two ends of heater strip connect respectively an electrode of power supply, and an end of magnetic test coil connects an air-sensitive detecting electrode; It is characterized in that: also comprise thermistor, described thermistor one end is electrically connected at one of them electrode of described power supply by wire, and the other end of described thermistor connects a temperature detection electrode.
2. temperature compensation semiconductor gas sensor according to claim 1, it is characterized in that: described drain pan also is provided with bleeder port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201945659U CN203365368U (en) | 2013-04-15 | 2013-04-15 | Semi-conductor gas sensor with temperature compensation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201945659U CN203365368U (en) | 2013-04-15 | 2013-04-15 | Semi-conductor gas sensor with temperature compensation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203365368U true CN203365368U (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201945659U Expired - Fee Related CN203365368U (en) | 2013-04-15 | 2013-04-15 | Semi-conductor gas sensor with temperature compensation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203365368U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505566A (en) * | 2015-11-13 | 2017-12-22 | 大连民族大学 | The method of testing of semiconductor gas sensor |
| CN108240967A (en) * | 2018-01-11 | 2018-07-03 | 重庆理工大学 | A kind of gas-sensitive property response curve test device with outer cover |
| CN112285279A (en) * | 2020-09-21 | 2021-01-29 | 山东斯诺电子有限公司 | Malodorous gas detector with integrated temperature compensation technology |
-
2013
- 2013-04-15 CN CN2013201945659U patent/CN203365368U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505566A (en) * | 2015-11-13 | 2017-12-22 | 大连民族大学 | The method of testing of semiconductor gas sensor |
| CN108240967A (en) * | 2018-01-11 | 2018-07-03 | 重庆理工大学 | A kind of gas-sensitive property response curve test device with outer cover |
| CN108240967B (en) * | 2018-01-11 | 2023-05-12 | 重庆理工大学 | Gas-sensitive characteristic response curve testing device with cover |
| CN112285279A (en) * | 2020-09-21 | 2021-01-29 | 山东斯诺电子有限公司 | Malodorous gas detector with integrated temperature compensation technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Xiang Zeyu Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Xiang Zeyu Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20150415 |
|
| EXPY | Termination of patent right or utility model |