CN106645584A - Combustible gas detector and compensation method thereof - Google Patents
Combustible gas detector and compensation method thereof Download PDFInfo
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- CN106645584A CN106645584A CN201611252602.1A CN201611252602A CN106645584A CN 106645584 A CN106645584 A CN 106645584A CN 201611252602 A CN201611252602 A CN 201611252602A CN 106645584 A CN106645584 A CN 106645584A
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- concentration
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- temperature
- methane
- combustible gas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
Abstract
The invention provides a combustible gas detector and a compensation method thereof. The detector comprises a first sensor, a second sensor and a processor, wherein the first sensor is suitable for acquiring a current temperature parameter; the second sensor is suitable for acquiring a methane concentration and a carbon monoxide concentration; and an input end of the processor is respectively connected with the first sensor and the second sensor, the processor is suitable for linearly compensating the methane concentration and the carbon monoxide concentration according to the received temperature parameter, the methane concentration and the carbon monoxide concentration and according to a prestored temperature compensation curve and outputting the compensated methane concentration and carbon monoxide concentration, wherein the temperature compensation curve comprises a methane temperature compensation curve and a carbon monoxide temperature compensation curve. The combustible gas detector is provided with the temperature sensor, so that the current temperature parameter can be acquired in real time, the current methane concentration or the current carbon monoxide concentration can be compensated in real time according to the temperature compensation curve of the methane or the carbon oxide, and the precision of the compensated value is higher.
Description
Technical field
The present invention relates to gas detection technology field, more particularly to a kind of combustible gas probe and its compensation method.
Background technology
For the gas sensitive element that the civilian combustible gas probe (being commonly called as alarm) of family's natural gas leakage detection is applied
Part (also known as gas sensor) is mainly made up of the sensor of two kinds of measuring principles.One kind is catalytic combustion type, another
It is semiconductor-type (semiconductor-type includes semiconductor heating and normal temperature semiconductor Liang Ge branches again).
However, the linearity of catalytic combustion type, selectivity ratios are preferably, but service life is shorter therefore in civil area
It is difficult to promote；Although semiconductor-type service life is longer, low price is well suited for being applied in civil area, semiconductor-type
Selective and long-time stability are poor；Can generally there is operating point drift after wrong report and Long-Time Service；Cause operating point drift master
Want factor to have two, one is that sensor is affected larger by environment (mainly humiture), operating point can be made to produce drift；Two is sensing
Equipment material itself, is electrified for a long time under state and uses, and causes fatigue of materials coefficient to increase, and Sensor Output Characteristic is in use
Demarcation phase difference will also result in greatly operating point drift very much with dispatching from the factory.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of combustible gas probe and its
Compensation method, for solving prior art in semiconductor-type combustible gas probe with temperature rise will bring temperature drift
Problem.
For achieving the above object and other related purposes, the present invention provides a kind of combustible gas probe, including：
First sensor, it is applied to collection Current Temperatures parameter；
Second sensor, it is applied to collection methane concentration and carbonomonoxide concentration；
Processor, its input connects respectively first sensor, second sensor, and it is applied to according to reception temperature ginseng
Number, methane concentration and carbonomonoxide concentration are entered respectively according to the temperature compensation curve for prestoring to methane concentration and carbonomonoxide concentration
Row linear compensation, and methane concentration and carbonomonoxide concentration after compensation are exported, wherein, temperature of the temperature compensation curve comprising methane
The temperature compensation curve of degree compensated curve and carbon monoxide.
Preferably, the first sensor is temperature sensor, and the second sensor is gas sensor.
Preferably, the temperature sensor is high-precision Honeywell type, and the gas sensor is semiconductor biography
Sensor.
Preferably, the processor is connected with communication unit, and by the communication unit host computer is connected, wherein, it is described
Communication unit includes one or more in GPRS module, WIFI module and LORA modules.
Preferably, the alarm mechanism is made up of relay, buzzer and status indicator lamp, described relay and buzzing
Device is connected respectively through amplifier with the output end of processor, the corresponding end of the output end connection status indicator lamp of the processor.
Preferably, also comprising memory, its connection processor is used for the temperature ginseng of storage temperature compensated curve, storage collection
Number, methane concentration, carbonomonoxide concentration, and be additionally operable to store the alarm threshold value of methane and carbon monoxide.
Preferably, also including power subsystem, the power subsystem connects respectively first and second sensor, processor, communication unit
Unit is its power supply with alarm mechanism.
Preferably, whether the processor carries out cumulative to judge it as disturbance to the temperature parameter or concentration parameter of collection
Signal, if accumulated value is zero in certain period of time, the parameter is disturbing signal；If in certain period of time, institute
Continuous parameters appearance or its trend are stated in augment direction, then the parameter is non-disturbing signal.
A kind of compensation method of combustible gas probe, including：
The current temperature parameter of collection, methane concentration and carbonomonoxide concentration；
Read current temperature parameter according to temperature compensation curve methane concentration to be mended with carbonomonoxide concentration respectively
Repay, the methane concentration and carbonomonoxide concentration after being compensated, wherein, the temperature compensation curve is bent comprising methane temperature compensation
Line and carbon monoxide temperature compensation curve.
Preferably, when methane concentration or carbonomonoxide concentration exceed its corresponding alarm threshold value, actuating of relay output
Alarm signal, by the buzzer and status indicator lamp alarm sound and warning optical signal are sent.
As described above, the combustible gas probe of the present invention and its compensation method, have the advantages that：
By arranging temperature sensor in combustible gas probe, can the current temperature parameter of Real-time Collection, according to first
Alkane or the respective temperature compensation curve of carbon monoxide are compensated in real time to current methane concentration or carbonomonoxide concentration, are arranged
Temperature sensor compares original temperature drift resistance with higher sensitivity so that the numerical precision value after compensation is higher.
Description of the drawings
Fig. 1 is shown as a kind of combustible gas probe structured flowchart of present invention offer；
Fig. 2 is shown as a kind of compensation method flow chart of combustible gas probe of present invention offer.
Component label instructions：
1 processor
2 first sensors
3 second sensors
4 communication units
5 alarm mechanisms
6 memories
7 power subsystems
S1～S2 steps 1 are to step 2
Specific embodiment
Hereinafter embodiments of the present invention are illustrated by particular specific embodiment, those skilled in the art can be by this explanation
Content disclosed by book understands easily other advantages and effect of the present invention.
Refer to Fig. 1 to Fig. 2.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to
Coordinate the content disclosed in specification, so that those skilled in the art understands and reads, being not limited to the present invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where effect that can be generated of the invention and the purpose to be reached is not affected, all should still fall in disclosed skill
In the range of art content is obtained and can covered.Meanwhile, in this specification it is cited as " on ", D score, "left", "right", " centre " and
The term of " one " etc., is merely convenient to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness
It is altered or modified, under without essence change technology contents, when being also considered as enforceable category of the invention.
Embodiment 1
Fig. 1 is referred to, the present invention provides a kind of structure block diagram of combustible gas probe, including：
First sensor 2, it is applied to collection Current Temperatures parameter；
Second sensor 3, it is applied to collection methane concentration and carbonomonoxide concentration；
Processor 1, its input connects respectively first sensor, second sensor, and it is applied to according to reception temperature ginseng
Number, methane concentration and carbonomonoxide concentration are entered respectively according to the temperature compensation curve for prestoring to methane concentration and carbonomonoxide concentration
Row linear compensation, and methane concentration and carbonomonoxide concentration after compensation are exported, wherein, temperature of the temperature compensation curve comprising methane
The temperature compensation curve of degree compensated curve and carbon monoxide.
Wherein, the first sensor 2 is temperature sensor, and the second sensor 3 is gas sensor；The temperature
Sensor is high-precision Honeywell type, and the gas sensor is semiconductor transducer (combustible gas sensor, an oxygen
Change carbon sensor)；The processor includes AD conversion function so that first sensor 2 and second sensor 3 directly with its phase
Even, the parameter analog-to-digital conversion of reception is obtained into corresponding shrinkage temperature parameter, methane concentration and carbonomonoxide concentration.In addition, such
The easy temperature influence of combustible gas probe, such as semiconductor combustible gas probe, herein preferably Figaro company production
Combustible gas probe, corresponding curve is also to need the temperature-compensating of compensation bent according to Figaro company temperature influence
Line.
In the present embodiment, original thermo-sensitive resistor collecting temperature is compared, using temperature sensors of high precision, it is possible to provide temperature
Degree precision, meanwhile, line is entered to methane concentration and carbonomonoxide concentration according to temperature respectively according to the temperature compensation curve for prestoring
Property compensation, and export methane concentration and carbonomonoxide concentration after compensation, improve the sensitivity of combustible gas probe with essence
Degree.
Specifically, the processor is connected with communication unit 4, and by the communication unit 4 host computer is connected, wherein, institute
Communication unit is stated including one or more in GPRS module, WIFI module and LORA modules.
In the present embodiment, the communication unit 4 can simultaneously include above-mentioned three kinds of communication modules, or a certain kind therein,
In addition, as needed communication unit can also integrated 3/4/5G modules, for will collection data syn-chronization to host computer, the host computer
Can be computer or server, compare existing detector directly by the data signal (high level or low level) of collection send to
Backstage, and sent to backstage according to the concentration values of current collection in the application, it is easy to backstage to do data monitoring or big data point
Analysis, the inquiry of historical data or analysis, are conducive to finding out rule, in advance prevention etc., and the artificial intelligence expert for host computer is
Improving for system provides historical data with self-learning function.Meanwhile, can flexible networking so that Internet of things system can simultaneously meet many
Network application environment is planted, with preferable generalization.
Specifically, the alarm mechanism 5 is made up of relay, buzzer and status indicator lamp, described relay and honeybee
Ring device is connected respectively through amplifier with the output end of processor, the correspondence of the output end connection status indicator lamp of the processor
End.
In the present embodiment, when there is gas alarm or temperature alarming, relay, honeybee can be caused by alarm mechanism 5
Ring device and status indicator lamp light alarm, wherein, triggering can be used as by exporting Continuity signal, control its normal work.
Specifically, also comprising memory 6, its connection processor is used for storage temperature compensated curve, the temperature of storage collection
Parameter, methane concentration, carbonomonoxide concentration, and be additionally operable to store the alarm threshold value of methane and carbon monoxide.
In the present embodiment, the memory 6 is acted on power down protection, for example, memory model AT24C02, i.e., and
The fortuitous events such as generation power down or blast are made, data can be recovered by storage, play a part of similar aircraft black box.
Specifically, also including power subsystem 7, the power subsystem 7 connects respectively first and second sensor, processor, communication
Unit is its power supply with alarm mechanism.
In the present embodiment, the power subsystem 7 provides working power for them, meanwhile, also provide work for memory 6
Power supply.Power subsystem 7 connects and composes D.C. regulated power supply by the input of dc source and the output end of rectification circuit；Power supply list
First 7 rectified circuit rectifies simultaneously form stable VCC voltages after DC/DC DC power voltage stabilizings, are that whole alarm is powered；
DC/DC dc sources can be that commercially available product model MC34063 and its associated peripheral circuits are constituted, and rectification circuit can be commercially available product model
For MB6S.
Specifically, whether the processor carries out cumulative to judge it as disturbance to the temperature parameter or concentration parameter of collection
Signal, if accumulated value is zero in certain period of time, the parameter is disturbing signal；If in certain period of time, institute
Continuous parameters appearance or its trend are stated in augment direction, then the parameter is non-disturbing signal.
In the present embodiment, it is used for the parameter to gathering carries out adding up whether to judge it as disturbing signal, if
Accumulated value is zero in certain period of time, then the parameter is disturbing signal；If in certain period of time, the continuous parameters go out
Existing or its trend in augment direction (continuously occur in certain time, or, the Trend value presented to a direction is more next
It is bigger), then the parameter is non-disturbing signal.The data that detector is gathered are carried out into analog-to-digital conversion, using accumulation algorithm and
Judge whether the various signals that flow process judges that one by one collection terminal is gathered are disturbing signal, and disturbing signal is mostly components and parts performance not
The accidental change of stable, spread of voltage or monitoring parameter is caused, and when the signal for detecting collection is disturbing signal, i.e., will not
The upload of collection signal is synchronized to server；Only when the signal for detecting collection is not disturbing signal, as normal signal.
By adopting the pretreatment mode in each detector in collection terminal, the data volume of whole monitoring system is greatly reduced,
Meanwhile, also improve the accuracy of raw data acquisition.
Fig. 2 is referred to, a kind of compensation method of the combustible gas probe provided for the present invention, including：
Step S1, gathers current temperature parameter, methane concentration and carbonomonoxide concentration；
Step S2, reads current temperature parameter according to temperature compensation curve respectively to methane concentration and carbonomonoxide concentration
Compensate, the methane concentration and carbonomonoxide concentration after being compensated, wherein, the temperature compensation curve includes methane temperature
Compensated curve and carbon monoxide temperature compensation curve.
In the present embodiment, original thermo-sensitive resistor collecting temperature is compared, using temperature sensors of high precision, it is possible to provide temperature
Degree precision, meanwhile, line is entered to methane concentration and carbonomonoxide concentration according to temperature respectively according to the temperature compensation curve for prestoring
Property compensation, and export methane concentration and carbonomonoxide concentration after compensation, improve the sensitivity of combustible gas probe with essence
Degree.
Specifically, when methane concentration or carbonomonoxide concentration exceed its corresponding alarm threshold value, actuating of relay output
Alarm signal, by the buzzer and status indicator lamp alarm sound and warning optical signal are sent.
In the present embodiment, the methane concentration and carbonomonoxide concentration after output compensation, meanwhile, also detect whether it surpasses
The alarm threshold value of your preset security, when more than the alarm threshold value, the actuating of relay output alarm signal in alarm mechanism passes through
The buzzer and status indicator lamp send alarm sound and warning light letter, for alert notification staff, reach safe prison
The effect of control.
In sum, the present invention by combustible gas probe arrange temperature sensor, can Real-time Collection it is current
Temperature parameter is dense to current methane concentration or carbon monoxide in real time according to methane or the respective temperature compensation curve of carbon monoxide
Degree is compensated, and is arranged temperature sensor and is compared original temperature drift resistance with higher sensitivity so that the numerical value after compensation
Accuracy value is higher.So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The principle and its effect of above-described embodiment only illustrative present invention, it is of the invention not for limiting.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and the scope without prejudice to the present invention to above-described embodiment.Cause
This, such as those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
1. a kind of combustible gas probe, it is characterised in that include：
First sensor, it is applied to collection Current Temperatures parameter；
Second sensor, it is applied to collection methane concentration and carbonomonoxide concentration；
Processor, its input connects respectively first sensor, second sensor, and it is applied to according to reception temperature parameter, first
Alkane concentration enters line to methane concentration and carbonomonoxide concentration respectively with carbonomonoxide concentration according to the temperature compensation curve for prestoring
Property compensation, and export compensation after methane concentration and carbonomonoxide concentration, wherein, temperature compensation curve comprising methane temperature mend
Repay the temperature compensation curve of curve and carbon monoxide.
2. combustible gas probe according to claim 1, it is characterised in that the first sensor is TEMP
Device, the second sensor is gas sensor.
3. combustible gas probe according to claim 2, it is characterised in that the temperature sensor for it is high-precision suddenly
Ni Weier types, the gas sensor is semiconductor transducer.
4. combustible gas probe according to claim 1, it is characterised in that the processor is connected with communication unit,
Host computer is connected by the communication unit, wherein, the communication unit is included in GPRS module, WIFI module and LORA modules
One or more.
5. combustible gas probe according to claim 1, it is characterised in that the alarm mechanism is by relay, buzzing
Device and status indicator lamp are constituted, and described relay and buzzer is connected respectively through amplifier with the output end of processor, should
The corresponding end of the output end connection status indicator lamp of processor.
6. combustible gas probe according to claim 1, it is characterised in that also comprising memory, its connection processor
For storage temperature compensated curve, temperature parameter, methane concentration, the carbonomonoxide concentration of storage collection, and it is additionally operable to storage
The alarm threshold value of methane and carbon monoxide.
7. combustible gas probe according to claim 1, it is characterised in that also including power subsystem, the power supply list
Unit connects respectively first and second sensor, processor, communication unit and alarm mechanism for its power supply.
8. combustible gas probe according to claim 1, it is characterised in that the processor is to the temperature parameter that gathers
It is described if accumulated value is zero in certain period of time or concentration parameter carries out adding up whether to judge it as disturbing signal
Parameter is disturbing signal；If in certain period of time, the continuous parameters occur or its trend is in augment direction, then the ginseng
Number is non-disturbing signal.
9. a kind of compensation method of combustible gas probe, it is characterised in that include：
The current temperature parameter of collection, methane concentration and carbonomonoxide concentration；
Read current temperature parameter according to temperature compensation curve methane concentration to be compensated with carbonomonoxide concentration respectively, obtain
Methane concentration and carbonomonoxide concentration to after compensation, wherein, the temperature compensation curve comprising methane temperature compensated curve with
Carbon monoxide temperature compensation curve.
10. the compensation method of combustible gas probe according to claim 9, it is characterised in that when methane concentration or
When oxidation concentration of carbon exceedes its corresponding alarm threshold value, actuating of relay output alarm signal, by the buzzer and state
Indicator lamp sends alarm sound and warning optical signal.
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| CN201611252602.1A CN106645584A (en) | 2016-12-30 | 2016-12-30 | Combustible gas detector and compensation method thereof |
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| CN201611252602.1A CN106645584A (en) | 2016-12-30 | 2016-12-30 | Combustible gas detector and compensation method thereof |
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Cited By (10)
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| CN109164216A (en) * | 2018-10-08 | 2019-01-08 | 重庆市方腾科技有限公司 | A kind of methane transducer and zero point compensation method of band output compensation |
| CN109406585A (en) * | 2018-10-08 | 2019-03-01 | 重庆市方腾科技有限公司 | A kind of methane transducer of monobus signal input and output |
| CN110118861A (en) * | 2019-05-28 | 2019-08-13 | 安徽延达智能科技有限公司 | A kind of dual sensor hazardous gas of robot compares, school check system |
| CN110231370A (en) * | 2019-06-19 | 2019-09-13 | 北京中聚高科科技有限公司 | Sensor-based acetone detection device and method |
| CN110415492A (en) * | 2019-07-01 | 2019-11-05 | 武汉科技大学 | City integrated piping lane natural gas alarm system based on Internet of Things |
| CN112379043A (en) * | 2020-10-10 | 2021-02-19 | 北京索斯克科技开发有限公司 | Gas detection system and method |
| CN112462005A (en) * | 2020-11-26 | 2021-03-09 | 深圳市安室智能有限公司 | Temperature compensation method and related product |
| CN112534252A (en) * | 2018-07-31 | 2021-03-19 | 西门子股份公司 | Flame ionization detector and method for analyzing oxygen-containing measurement gas |
| CN112578074A (en) * | 2019-09-30 | 2021-03-30 | 罗斯蒙特公司 | Combustion analyzer with simultaneous measurement of carbon monoxide and methane |
| CN116973521A (en) * | 2023-09-21 | 2023-10-31 | 北京燕山时代仪表有限公司 | Temperature compensation method and device for gas detector and gas detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112534252A (en) * | 2018-07-31 | 2021-03-19 | 西门子股份公司 | Flame ionization detector and method for analyzing oxygen-containing measurement gas |
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| CN112578074B (en) * | 2019-09-30 | 2022-11-22 | 罗斯蒙特公司 | Combustion analyzer with simultaneous measurement of carbon monoxide and methane |
| CN112379043A (en) * | 2020-10-10 | 2021-02-19 | 北京索斯克科技开发有限公司 | Gas detection system and method |
| CN112462005A (en) * | 2020-11-26 | 2021-03-09 | 深圳市安室智能有限公司 | Temperature compensation method and related product |
| CN116973521A (en) * | 2023-09-21 | 2023-10-31 | 北京燕山时代仪表有限公司 | Temperature compensation method and device for gas detector and gas detector |
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Application publication date: 20170510 |
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