CN202383103U - Temperature drift compensating device of combustible gas sensor - Google Patents
Temperature drift compensating device of combustible gas sensor Download PDFInfo
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- CN202383103U CN202383103U CN2012200029631U CN201220002963U CN202383103U CN 202383103 U CN202383103 U CN 202383103U CN 2012200029631 U CN2012200029631 U CN 2012200029631U CN 201220002963 U CN201220002963 U CN 201220002963U CN 202383103 U CN202383103 U CN 202383103U
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Abstract
The utility model discloses a temperature drift compensating device of a combustible gas sensor. The temperature drift compensating device comprises a sensor, an electrical bridge and a post amplifier which are sequentially connected, wherein the electrical bridge comprises a first resistor, a second resistor, a third resistor and a potentiometer; the cathode interface of the sensor is connected with the first resistor and the potentionmeter which are connected in series; the anode interface of the sensor is connected with the second resistor and the third resistor which are connected in parallel; the temperature drift compensating device further comprises a diode used as temperature compensation; and the diode is connected with the second resistor in series. In the temperature drift compensating device, the diode is connected into an electrical bridge loop, and the temperature characteristic of the diode is utilized, so that the problem of measurement error caused by temperature drift of a sensing element is solved.
Description
Technical field
The utility model relates to a kind of temperature drift compensation device of combustible gas sensor.
Background technology
Present stage, the combustible gas probe of catalytic combustion type mostly is to come pickup sensor signals with bridge diagram.And there is the zero temperature drift of 0.1～0.3mV/K in the sensor of catalytic combustion type, and this drift meeting is judged as the combustable gas concentration signal by mistake, in the past; Can adopt the bigger pt temperature sensing element compensation of temperature coefficient, at work, because the working current of sensor is very big (generally 50～200mA); This electric current can make the pt element heating, to have lost real environment temperature and has judged, in order to solve the above problems; Present stage product mostly adopt software compensation, but adopt the method for software compensation also to possess a drawback, software compensation method does not have absolute zero point; Just be not regarded as zero point as long as the output signal of sensing element does not change within a certain period of time, so just usually erroneous judgement is disconnected, causes mistake to be corrected; Make the temperature drift data that very big discreteness arranged, very difficult operation on software program.
The utility model content
The purpose of the utility model is the deficiency to above-mentioned prior art, provides a kind of easy to operate and measure the temperature drift compensation device of free from error combustible gas sensor.
The technical scheme of the utility model is achieved in that a kind of temperature drift compensation device of combustible gas sensor; It comprises sensor, electric bridge and the post-amplifier that links to each other successively; Said electric bridge comprises first resistance, second resistance, the 3rd resistance and potentiometer; The negative pole interface of said sensor links to each other with potentiometer with first resistance of mutual series connection; The anode interface of said sensor links to each other with second resistance and the 3rd resistance parallel with one another, also comprises a diode as temperature compensation, and said diode is connected with said second resistance.
Preferably, the material of said diode is a silicon.
Preferably; Also comprise the 4th resistance, the 5th resistance; The 6th resistance; The in-phase input end of said post-amplifier links to each other with the 4th resistance and sensor successively, and the inverting input of said post-amplifier links to each other with the 5th resistance and electric bridge successively, the two ends of said the 6th resistance respectively with the output terminal of post-amplifier with and the inverting input of post-amplifier link to each other.
The utility model has the advantages that: in bridge circuit, insert diode; Utilize the temperature characterisitic of diode, solved the measuring error problem that sensing element temperature drift causes, eliminate the influence of zero temperature drift measuring accuracy; Compare with software compensation; Need not do programming data to single-sensor, not have the mistake compensation, the signal of post-amplifier promptly is an actual signal.
Description of drawings
Below in conjunction with the embodiment in the accompanying drawing the utility model is done further to specify, but do not constitute any restriction the utility model.
Fig. 1 is the structural representation of present embodiment.
Among the figure:
R1-first resistance; R2-second resistance; R3-the 3rd resistance; R4-the 4th resistance; R5-the 5th resistance; R6-the 6th resistance; The WZ-potentiometer; The U1-post-amplifier; The S-sensor; The D1-diode.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiment of the utility model is set forth in detail, thereby the protection domain of the utility model is made more explicit defining so that advantage of the utility model and characteristic can be easier to it will be appreciated by those skilled in the art that.
Consult shown in Figure 1; The temperature drift compensation device of a kind of combustible gas sensor of present embodiment; It comprises the temperature drift compensation device of a kind of combustible gas sensor S, and it comprises successively sensor S, electric bridge and the post-amplifier U1 that links to each other, and electric bridge comprises first resistance R 1, second resistance R 2, the 3rd resistance R 3 and potentiometer WZ; The negative pole interface of sensor S links to each other with potentiometer WZ with first resistance R 1 of mutual series connection; The anode interface of sensor S links to each other with second resistance R 2 and the 3rd resistance R 3 parallel with one another, also comprises a diode D1 as temperature compensation, and diode D1 connects with second resistance R 2; The material of diode D1 is a silicon in the present embodiment; The temperature drift compensation device of combustible gas sensor S also comprises the 4th resistance R 4, the 5th resistance R 5, the six resistance R 6, and the in-phase input end of post-amplifier U1 links to each other with the 4th resistance R 4 and sensor S successively; The inverting input of post-amplifier U1 links to each other with the 5th resistance R 5 and electric bridge successively, the two ends of the 6th resistance R 6 respectively with the output terminal of post-amplifier U1 with and the inverting input of post-amplifier U1 link to each other.
In the practical implementation process; Measure the temperature drift data of sensor S with high-low temperature chamber, the sensitivity of general sensor S is 1mV/LEL, and its temperature is floated value between 0.1mV～0.3mV/K; The temperature coefficient of diode D1 is-2.2mV/K; The resistance of electric bridge is first resistance R 1 and the 3rd resistance R 3, and wherein second resistance R 2 is much larger than R3, and regulate R3: R2 ratio can be adjusted penalty coefficient; The formula of the penalty coefficient in the present embodiment is the forward voltage of diode D1 for Vd in
formula; For example, if hope to obtain+temperature compensation of 0.1mV/K, need to set R3/R2 ratio by following computing method:
Above embodiment is only for explaining the technical conceive and the characteristics of the utility model; Its purpose is to let the people that is familiar with this technology understand the content of the utility model and implements; Can not limit the protection domain of the utility model with this; All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed in the protection domain of the utility model.
Claims (3)
1. the temperature drift compensation device of a combustible gas sensor; It comprises sensor, electric bridge and the post-amplifier that links to each other successively; Said electric bridge comprises first resistance, second resistance, the 3rd resistance and potentiometer; The negative pole interface of said sensor links to each other with potentiometer with first resistance of mutual series connection; The anode interface of said sensor links to each other with second resistance and the 3rd resistance parallel with one another, it is characterized in that: also comprise a diode as temperature compensation, said diode is connected with said second resistance.
2. the temperature drift compensation device of combustible gas sensor according to claim 1, it is characterized in that: the material of said diode is a silicon.
3. the temperature drift compensation device of combustible gas sensor according to claim 1; It is characterized in that: also comprise the 4th resistance, the 5th resistance; The 6th resistance; The in-phase input end of said post-amplifier links to each other with the 4th resistance and sensor successively, and the inverting input of said post-amplifier links to each other with the 5th resistance and electric bridge successively, the two ends of said the 6th resistance respectively with the output terminal of post-amplifier with and the inverting input of post-amplifier link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200029631U CN202383103U (en) | 2012-01-05 | 2012-01-05 | Temperature drift compensating device of combustible gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200029631U CN202383103U (en) | 2012-01-05 | 2012-01-05 | Temperature drift compensating device of combustible gas sensor |
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| CN202383103U true CN202383103U (en) | 2012-08-15 |
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| CN2012200029631U Expired - Fee Related CN202383103U (en) | 2012-01-05 | 2012-01-05 | Temperature drift compensating device of combustible gas sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103235628A (en) * | 2013-05-02 | 2013-08-07 | 安伏（苏州）汽车电源科技有限公司 | Power supply for power amplifier for communication |
| CN104601115A (en) * | 2014-11-25 | 2015-05-06 | 电子科技大学 | Sensitivity function based wide-temperature-range filter design method |
| CN107170206A (en) * | 2017-06-13 | 2017-09-15 | 成都昂迪加科技有限公司 | A kind of Portable combustible gas detector with temperature compensation function |
| CN107170207A (en) * | 2017-06-13 | 2017-09-15 | 成都昂迪加科技有限公司 | A kind of combustible-gas detector |
| CN108426519A (en) * | 2018-04-04 | 2018-08-21 | 成都众宜天成科技有限公司 | A kind of paint coating thickness based on temperature-compensation circuit accurately measures instrument |
| CN108491313A (en) * | 2018-06-22 | 2018-09-04 | 成都信息工程大学 | A kind of intelligent computer peripheral hardware |
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| CN108649463A (en) * | 2018-06-25 | 2018-10-12 | 成都亿方世佳科技有限公司 | Portable security protection power distribution cabinet |
| CN108646873A (en) * | 2018-06-22 | 2018-10-12 | 成都信息工程大学 | A kind of multifunctional intellectual computer peripheral equipment |
| CN108733166A (en) * | 2018-06-22 | 2018-11-02 | 成都信息工程大学 | It is a kind of can automatic air purification intelligent computer peripheral hardware |
| CN108759756A (en) * | 2018-04-04 | 2018-11-06 | 成都众宜天成科技有限公司 | Paint coating thickness based on Ni-MH battery test constantly accurately measures instrument |
| CN108832491A (en) * | 2018-06-25 | 2018-11-16 | 成都亿方世佳科技有限公司 | Based on power-on protective circuit consumption reduction type security protection power distribution cabinet |
| CN108836860A (en) * | 2018-07-13 | 2018-11-20 | 成都信息工程大学 | It cuts and dries continuous cropping type intelligence medicine materical crude slice system of processing |
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| CN108908719A (en) * | 2018-07-10 | 2018-11-30 | 四川双利新材料有限公司 | Based on electric cabinet automatic control type cement mixing equipment |
| CN108937042A (en) * | 2018-07-19 | 2018-12-07 | 王晓堤 | Medicine box based on photoelectricity alarm device early warning medication |
| CN111537143A (en) * | 2020-05-26 | 2020-08-14 | 荣成歌尔电子科技有限公司 | Performance test method and device of pressure sensor and storage medium |
| CN113760033A (en) * | 2021-09-08 | 2021-12-07 | 中国电子科技集团公司第二十四研究所 | Packaging structure of voltage reference chip and output voltage temperature compensation method |
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2012
- 2012-01-05 CN CN2012200029631U patent/CN202383103U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103235628B (en) * | 2013-05-02 | 2016-04-13 | 安伏（苏州）汽车电源科技有限公司 | Power amplifier for communication power supply |
| CN103235628A (en) * | 2013-05-02 | 2013-08-07 | 安伏（苏州）汽车电源科技有限公司 | Power supply for power amplifier for communication |
| CN104601115A (en) * | 2014-11-25 | 2015-05-06 | 电子科技大学 | Sensitivity function based wide-temperature-range filter design method |
| CN107170206A (en) * | 2017-06-13 | 2017-09-15 | 成都昂迪加科技有限公司 | A kind of Portable combustible gas detector with temperature compensation function |
| CN107170207A (en) * | 2017-06-13 | 2017-09-15 | 成都昂迪加科技有限公司 | A kind of combustible-gas detector |
| CN108759756A (en) * | 2018-04-04 | 2018-11-06 | 成都众宜天成科技有限公司 | Paint coating thickness based on Ni-MH battery test constantly accurately measures instrument |
| CN108426519A (en) * | 2018-04-04 | 2018-08-21 | 成都众宜天成科技有限公司 | A kind of paint coating thickness based on temperature-compensation circuit accurately measures instrument |
| CN108491313A (en) * | 2018-06-22 | 2018-09-04 | 成都信息工程大学 | A kind of intelligent computer peripheral hardware |
| CN108563304A (en) * | 2018-06-22 | 2018-09-21 | 成都信息工程大学 | A kind of intelligent computer peripheral hardware easy to use |
| CN108646873A (en) * | 2018-06-22 | 2018-10-12 | 成都信息工程大学 | A kind of multifunctional intellectual computer peripheral equipment |
| CN108733166A (en) * | 2018-06-22 | 2018-11-02 | 成都信息工程大学 | It is a kind of can automatic air purification intelligent computer peripheral hardware |
| CN108649463A (en) * | 2018-06-25 | 2018-10-12 | 成都亿方世佳科技有限公司 | Portable security protection power distribution cabinet |
| CN108832491A (en) * | 2018-06-25 | 2018-11-16 | 成都亿方世佳科技有限公司 | Based on power-on protective circuit consumption reduction type security protection power distribution cabinet |
| CN108908719A (en) * | 2018-07-10 | 2018-11-30 | 四川双利新材料有限公司 | Based on electric cabinet automatic control type cement mixing equipment |
| CN108836860A (en) * | 2018-07-13 | 2018-11-20 | 成都信息工程大学 | It cuts and dries continuous cropping type intelligence medicine materical crude slice system of processing |
| CN108870930A (en) * | 2018-07-19 | 2018-11-23 | 成都信息工程大学 | Multi-functional traditional Chinese medicine material effective driers |
| CN108937042A (en) * | 2018-07-19 | 2018-12-07 | 王晓堤 | Medicine box based on photoelectricity alarm device early warning medication |
| CN111537143A (en) * | 2020-05-26 | 2020-08-14 | 荣成歌尔电子科技有限公司 | Performance test method and device of pressure sensor and storage medium |
| CN113760033A (en) * | 2021-09-08 | 2021-12-07 | 中国电子科技集团公司第二十四研究所 | Packaging structure of voltage reference chip and output voltage temperature compensation method |
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| 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: 20120815 Termination date: 20180105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |