CN104614407B - A kind of gas monitoring system - Google Patents
A kind of gas monitoring system Download PDFInfo
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- CN104614407B CN104614407B CN201510061540.5A CN201510061540A CN104614407B CN 104614407 B CN104614407 B CN 104614407B CN 201510061540 A CN201510061540 A CN 201510061540A CN 104614407 B CN104614407 B CN 104614407B
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Abstract
The invention discloses a kind of gas monitoring systems, for being identified to object gas or smell and monitoring in real time, including sensor array, multiplexer and microprocessor, the sensor that the sensor array generates gas with various by m different responses rearranges, and the corresponding sensor of control signal behavior that the multiplexer is sent out according to microprocessor is identified or monitors to object gas or smell.Sensor array in the present invention shares a set of sensor measuring circuit by multiplexer, it economizes on resources, multiplexer exports corresponding sensor detection signal according to the control signal behavior that microprocessor is sent out, logical relation is simple and fast, multiple gases can be detected simultaneously, realize the miniaturization of device.
Description
Technical field
The present invention relates to gas-monitoring field more particularly to a kind of gas monitoring systems.
Background technology
Daily life and production activity are all closely related with the atmospheric environment of surrounding, and the variation of air has the mankind
Strong influence.As commercial scale gradually expands, the type of product is on the increase, the generation in gas raw material and production process
Gaseous species and quantity be on the increase, the especially industrial developments such as oil, chemical industry, coal and automobile cause atmosphere pollution day
It is beneficial serious.Therefore, the various gases in human survival and production environment are carried out with accurate monitoring is very important.
At present, existing gas controlling device can only realize that sensor and gas are monitored one to one, for environment
The monitoring of middle multiple gases or smell is limited, be simultaneously using a variety of sensitive to gas with various if necessary to monitor multiple gases
Sensor, i.e., gas controlling device service efficiency of the prior art is extremely low, of high cost and sensitivity is not high.It is in addition, existing
Sensor array volume it is larger, it is inconvenient to carry, and with the miniaturization of device in modern society, and this sensor array without
Method is integrated with miniature device, and the smell in None- identified environment, therefore, is widely used to receive and is definitely limited.
Invention content
The technical problems to be solved by the invention be how to overcome existing sensor array volume it is larger, it is selective,
Service efficiency is low, of high cost, poor sensitivity, can not carry out the defects of integrated etc. with miniature device.It is asked to solve above-mentioned technology
Topic, the present invention provides a kind of gas monitoring system, for being identified to object gas or smell and monitoring in real time, including passing
Sensor array, multiplexer and microprocessor, the sensor array generate gas with various by m the sensing of different responses
Device rearranges, and the corresponding sensor of control signal behavior that the multiplexer is sent out according to microprocessor is to object gas
Or smell is identified or monitors.
Further, the system also includes signal amplification unit and AD conversion unit, the signal amplification unit is used
In by Sensor monitoring to gas or smell detection signal be amplified and by it is amplified detection signal transmission to modulus
Converting unit, the AD conversion unit are used to amplified detection signal being converted to digital signal and by digital data transmission
To first communication module, the AD conversion unit is controlled by microprocessor.
Further, the system also includes the resistance measuring module for measurement sensor array resistors value, the electricity
Resistance measurement module one end is connected with AD conversion unit, and the other end is connected with sensor array, the amount of the resistance measuring module
Journey is controlled by microprocessor, and the resistance measuring module can carry out measured resistance in a very big range ability
It measures, range swithching can also be done, gas or the detection signal reaction of smell that wherein Sensor monitoring arrives are the electricity of sensor
Resistive.
Further, the signal output end of each sensor in the sensor array respectively with the multiplexer
An input terminal electrical connection, the microprocessor by n roots control line to multiplexer send control signal, multiplexing
Device exports the signal of corresponding sensor detection gas or smell, the quantity m of the sensor by the control signal behavior
≤2n-1。
Wherein, the sensor in the sensor array includes substrate, sensitive layer and at least two electrodes, the sensitive layer
Substrate surface is formed in, the electrode is drawn by sensitive layer.
Further, the microprocessor includes the first communication module.
Further, the system also includes signal amplification unit and AD conversion unit, the signal amplification unit is used
In by Sensor monitoring to gas or smell detection signal be amplified and by it is amplified detection signal transmission to modulus
Converting unit, the AD conversion unit are used to amplified detection signal being converted to digital signal and by digital data transmission
To first communication module.
Further, the system also includes terminal server, the terminal server includes signal processing module and the
Two communication modules, second communication module believe the number for receiving the digital signal of the first communication module transmission
Number it is transferred to signal processing module, the signal processing module is for being analyzed and handled to digital signal.
Specifically, the signal processing module carries out the corresponding data array of the digital signal { p } and setting value { x }
It compares, when { p } is consistent with { x }, then judges that gas concentration is suitable with setting value in current environment, when { p } is not consistent with { x }
When, then data array { p } is stored, so as to obtain processing signal.
Further, the terminal server further includes display module, and the display module is used to receive signal processing mould
The processing signal of block transmission simultaneously shows the processing signal, so as to obtain the type of object gas or smell and concentration letter
Breath.
Further, the terminal server further includes alarm module, and the alarm module is used to receive signal processing mould
Whether the processing signal of block transmission simultaneously alarms according to the processing signal determining.
Specifically, the terminal server is equipped with the application software for the system development, the terminal server with
Carried out data transmission between microprocessor by wired or wireless mode.
The terminal server may include the mobile communication equipments such as mobile phone, tablet computer, laptop computer, may also include desk-top
The fixed equipments such as computer, desk-top measuring instrument.
Wherein, the sensor in the sensor array includes substrate, sensitive layer and at least (m is the number of sensor to m+1 roots
Amount) electrode, the sensitive layer is formed in substrate surface, and the electrode is drawn by sensitive layer.The substrate is to insulate and with change
Inert substrate is learned, can be flexible substrates or rigid basement, the substrate is dimethyl silicone polymer, poly terephthalic acid second
One kind in diester, polyimides or PCB substrate material, the sensitive layer are SnO2、ZnO、In2O3Metal oxide is mixed
The SnO of Cu, Zn, Fe, Co, Ni2、ZnO、In2O3Metal oxide can also be graphene, carbon nanotube, metal (oxide)
Nano wire (or band) or doping or grapheme modified and doping or carbon nano-tube modified.
The gas monitoring system of the present invention, has the advantages that：
1st, the sensor array in the present invention shares a set of measuring circuit by a multiplexer, economizes on resources, and drops
Low cost, while cause sensor chip miniaturization.
2nd, multiplexer of the invention exports corresponding sensor according to the control signal behavior that microprocessor is sent out and examines
Signal is surveyed, logical relation is simple and fast, can detect multiple gases simultaneously, realizes the miniaturization of device, and the resistance is surveyed
Large-scale resistance value can be carried out directly to measure (100 Ω -100M) or range switching by measuring module.
3rd, sensor of the invention can be detected simultaneously by a variety of gas with various or smell, will by wired or wireless way
The gas or the type of smell and concentration detected is shown, gas in environment or smell can be monitored in real time, separately
Outside, the mode of signal processing module processing data has learning functionality, being capable of constantly gas or smell in academic environment
Information, it is more intelligent.
4th, whether the alarm module in terminal server alarms according to processing signal determining, so as to be carried out to user
Warning.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the gas monitoring system block diagram of the present invention；
Fig. 2 is the structure diagram of sensor of the invention array.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, shall fall within the protection scope of the present invention.
Embodiment one：
As depicted in figs. 1 and 2, an embodiment of the present invention provides a kind of gas monitoring system, for object gas or gas
Taste is identified and monitors in real time, and including sensor array, multiplexer and microprocessor, the sensor array is by four groups
The sensor that different responses are generated to gas with various rearranges, there are four every group of sensor in four groups of sensors includes
Sensor, four sensors are identical, you can be detected to same gas or smell, the multiplexer root
The corresponding sensor of control signal behavior sent out according to microprocessor is identified or monitors to object gas or smell.
In addition, the system also includes the resistance measuring module for measurement sensor array resistors value, the resistance is surveyed
Amount module one end is connected with AD conversion unit, and the other end is connected with sensor array, and the microprocessor is to resistance measurement mould
Block carries out range control, the signal output end of each sensor in the sensor array respectively with the multiplexer
One input terminal electrical connection, the microprocessor send control signal, multiplexing by five control lines to multiplexer
Device exports the signal of detection gas or smell on corresponding sensor by the control signal behavior, when detecting gas or gas
During taste, the measuring circuit measures the resistance variations of respective sensor, and the microprocessor includes the first communication module.
The system also includes signal amplification unit and AD conversion unit, the signal amplification unit is used for sensor
The gas or the detection signal of smell monitored is amplified and by amplified detection signal transmission to AD conversion unit, institute
AD conversion unit is stated for amplified detection signal to be converted to digital signal and by digital data transmission to described first
Communication module.
The system also includes terminal server, the terminal server includes signal processing module and the second communication mould
Block, second communication module give the digital data transmission for receiving the digital signal of the first communication module transmission
Signal processing module, the signal processing module are used to that digital signal to be analyzed and handled；The signal processing module will
The corresponding data array { p } of the digital signal is compared with setting value { x }, and when { p } is consistent with { x }, then judgement is current
Gas concentration is suitable with setting value in environment, when { p } is not consistent with { x }, then data array { p } is stored, so as to
To processing signal.
Wherein, the sensor in the sensor array includes substrate, sensitive layer and 17 electrodes, the sensitive layer shape
Into in substrate surface, the electrode is drawn by sensitive layer；The substrate is flexible substrates, the flexible base in four groups of sensors
Bottom is dimethyl silicone polymer, and the sensitive layer of every group of sensor in four groups of sensors is respectively SnO2、In2O3, mix Cu
SnO2And graphene, the sensitive layer is to CO, NO2And H2S has very high sensitivity, when the CO in environment is 25ppm, NO2
For 20ppm and H2When S is 10ppm, sensor array can delicately detect gas information in environment, sensor array very much
In sensors towards ambient in gas be detected, the detection signal composition data array { p } of all the sensors, by { p } with
Setting value { x } is compared, and when { p } is consistent with { x }, then judges that gas concentration is suitable with setting value in current environment, finally
The information of gaseous species and gas concentration is obtained, and by the presentation of information on terminal server；When { p } is not consistent with { x },
Then data array { p } is stored, and most the gas or odiferous information are shown on terminal server at last, when next time
When encountering same gas or smell, due to before storing data array { p }, then directly gas or odiferous information are shown
On terminal server.When the gas or smell in sensor array monitoring of environmental, multiplexer is sent out according to microprocessor
The detection signal of control signal behavior output transducer gone out, CO, NO in one group of sensors sense environmental2And H2After S gases,
Another three groups of sensors detect CO, NO in environment successively2And H2S gases, and export detection data, finally all detection data groups
Into data array { p }.This process logic is simple, therefore speed is very fast, need to take more than ten seconds altogether.
The terminal server further includes display module and alarm module, and the display module is used to receive signal processing mould
The processing signal of block transmission simultaneously shows the processing signal, so as to obtain the type of object gas or smell and concentration letter
Breath；The alarm module be used for receive signal processing module transmission processing signal and according to it is described processing signal determining whether into
Row alarm.
The terminal server is equipped with the application software for the system development, the terminal server and microprocessor
Between carried out data transmission by wired mode.
The gas monitoring system of the present invention, has the advantages that：
1st, the sensor array in the present invention shares circuit kit by a multiplexer, economizes on resources, reduces
Cost, while cause sensor chip miniaturization.
2nd, multiplexer of the invention exports corresponding sensor according to the control signal behavior that microprocessor is sent out and examines
Signal is surveyed, logical relation is simple and fast, can detect CO, NO simultaneously2And H2S gases realize the miniaturization of device.
3rd, sensor of the invention can be detected simultaneously by three kinds of gas with various or smell, will be detected by wired mode
Gas or the type and concentration of smell show, gas in environment or smell can be monitored in real time.
4th, whether the alarm module in terminal server alarms according to processing signal determining, so as to be carried out to user
Warning.
Embodiment two：
As depicted in figs. 1 and 2, an embodiment of the present invention provides a kind of gas monitoring system, for object gas or gas
Taste is identified and monitors in real time, and including sensor array, multiplexer and microprocessor, the sensor array is by eight
The sensor that different responses are generated to gas with various rearranges, and the multiplexer is believed according to the control that microprocessor is sent out
Number corresponding sensor of selection is identified or monitors to object gas or smell.
In addition, the system also includes the resistance measuring module for measurement sensor array resistors value, the resistance is surveyed
Amount module one end is connected with AD conversion unit, and the other end is connected with sensor array, and the microprocessor is to resistance measurement mould
Block carries out range control, the signal output end of each sensor in the sensor array respectively with the multiplexer
One input terminal electrical connection, the microprocessor send control signal, multiplexing by three control lines to multiplexer
Device exports the signal of corresponding sensor detection gas or smell by the control signal behavior, and the microprocessor includes the
One communication module.
The system also includes signal amplification unit and AD conversion unit, the signal amplification unit is used for sensor
The gas or the detection signal of smell monitored is amplified and by amplified detection signal transmission to AD conversion unit, institute
AD conversion unit is stated for amplified detection signal to be converted to digital signal and by digital data transmission to described first
Communication module.
The system also includes terminal server, the terminal server includes signal processing module and the second communication mould
Block, second communication module give the digital data transmission for receiving the digital signal of the first communication module transmission
Signal processing module, the signal processing module are used to that digital signal to be analyzed and handled；The signal processing module will
The corresponding data array { p } of the digital signal is compared with setting value { x }, and when { p } is consistent with { x }, then judgement is current
Gas concentration is suitable with setting value in environment, when { p } is not consistent with { x }, then data array { p } is stored, so as to
To processing signal.
Wherein, the sensor in the sensor array is formed including substrate, sensitive layer and nine electrodes, the sensitive layer
In substrate surface, the electrode is drawn by sensitive layer；The substrate is flexible substrates, the flexible substrates in eight sensors
It is polyethylene terephthalate, the sensitive layer in eight sensors is respectively SnO2、WO3, mix the SnO of Cu2, mix Zn
In2O3, graphene, carbon nanotube, the graphene and nitrogen doped carbon nanotube for mixing Co, the sensitive layer is to SO2、NH3, NO and CO2
There is very high sensitivity, as the SO in environment2For 28ppm, NH3It is 10ppm and CO for 10ppm, NO2During for 1000ppm, sensing
Device array can delicately detect gas information in environment very much, the gas in sensors towards ambient in sensor array into
Row detection, { p } is compared the detection signal composition data array { p } of all the sensors with setting value { x }, as { p } and
When { x } is consistent, then judges that gas concentration is suitable with setting value in current environment, finally obtain gaseous species and the letter of gas concentration
Breath, and by the presentation of information on terminal server；When { p } is not consistent with { x }, then data array { p } is stored, and
Most the gas or odiferous information are shown on terminal server at last, when encountering same gas or smell next time, due to
Data array { p } is stored before, then is directly included gas or odiferous information on terminal server.Work as sensor array
During gas or smell in row monitoring of environmental, control signal behavior output transducer that multiplexer is sent out according to microprocessor
Detection signal, the SO in a sensors sense environmental2、NH3, NO and CO2After gas, another seven sensors detect ring successively
SO in border2、NH3, NO and CO2Gas, and export detection data, finally all detection data composition data arrays { p }.This
Process logic is simple, therefore speed is very fast, need to take more than ten seconds altogether.
The terminal server further includes display module and alarm module, and the display module is used to receive signal processing mould
The processing signal of block transmission simultaneously shows the processing signal, so as to obtain the type of object gas or smell and concentration letter
Breath；The alarm module be used for receive signal processing module transmission processing signal and according to it is described processing signal determining whether into
Row alarm.
The terminal server is equipped with the application software for the system development, the terminal server and microprocessor
Between carried out data transmission by the wireless mode of bluetooth.
The gas monitoring system of the present invention, has the advantages that：
1st, the sensor array in the present invention shares circuit kit by a multiplexer, economizes on resources, reduces
Cost, while cause sensor chip miniaturization.
2nd, multiplexer of the invention exports corresponding sensor according to the control signal behavior that microprocessor is sent out and examines
Signal is surveyed, logical relation is simple and fast, can detect multiple gases or smell simultaneously, realize the miniaturization of device.
3rd, sensor of the invention can be detected simultaneously by four kinds of gas with various or smell, will be detected by bluetooth approach
Gas or the type and concentration of smell show, gas in environment or smell can be monitored in real time.
4th, whether the alarm module in terminal server alarms according to processing signal determining, so as to be carried out to user
Warning.
Embodiment three：
As depicted in figs. 1 and 2, an embodiment of the present invention provides a kind of gas monitoring system, for object gas or gas
Taste is identified and monitors in real time, and including sensor array, multiplexer and microprocessor, the sensor array is by 16
A sensor that different responses are generated to gas with various rearranges, the control that the multiplexer is sent out according to microprocessor
The corresponding sensor of signal behavior is identified or monitors to object gas or smell.
In addition, the system also includes the resistance measuring module for measurement sensor array resistors value, the resistance is surveyed
Amount module one end is connected with AD conversion unit, and the other end is connected with sensor array, and the microprocessor is to resistance measurement mould
Block carries out range control, the signal output end of each sensor in the sensor array respectively with the multiplexer
One input terminal electrical connection, the microprocessor send control signal, multiplexing by four control lines to multiplexer
Device exports the signal of corresponding sensor detection gas or smell by the control signal behavior, and the microprocessor includes the
One communication module.
The system also includes signal amplification unit and AD conversion unit, the signal amplification unit is used for sensor
The gas or the detection signal of smell monitored is amplified and by amplified detection signal transmission to AD conversion unit, institute
AD conversion unit is stated for amplified detection signal to be converted to digital signal and by digital data transmission to described first
Communication module.
The system also includes terminal server, the terminal server includes signal processing module and the second communication mould
Block, second communication module give the digital data transmission for receiving the digital signal of the first communication module transmission
Signal processing module, the signal processing module are used to that digital signal to be analyzed and handled；The signal processing module will
The corresponding data array { p } of the digital signal is compared with setting value { x }, and when { p } is consistent with { x }, then judgement is current
Gas concentration is suitable with setting value in environment, when { p } is not consistent with { x }, then data array { p } is stored, so as to
To processing signal.
Wherein, the sensor in the sensor array includes silicon base, sensitive layer and 17 electrodes, the sensitive layer
Substrate surface is formed in, the electrode is drawn by sensitive layer；Sensitive layer in 16 sensors is respectively SnO2、
In2O3, ZnO, the SnO for mixing Cu2, mix the In of Zn2O3, mix the ZnO of Fe, mix the SnO of Ni2, mix the In of Co2O3, mix Cu ZnO, mix Co
ZnO, graphene, carbon nanotube, the graphene for mixing Co, the graphene for mixing Fe, Co, nitrogen doped carbon nanotube and boron-doping carbon nanometer
Pipe, the sensitive layer is to CO, H2S, methane and CO2There is very high sensitivity, when the CO in environment is 25ppm, H2S for 10ppm,
Methane 100ppm and CO2During 1000ppm, sensor array can delicately detect gas information in environment, sensor very much
The gas in sensors towards ambient in array is detected, the detection signal composition data array { p } of all the sensors, will
{ p } is compared with setting value { x }, when { p } is consistent with { x }, then judges that gas concentration is suitable with setting value in current environment,
The information of gaseous species and gas concentration is finally obtained, and by the presentation of information on terminal server；When { p } and { x } not phase
Fu Shi then stores data array { p }, and most the gas or odiferous information are shown on terminal server at last, when
When encountering same gas or smell next time, due to before storing data array { p }, then directly gas or smell are believed
Breath is shown on terminal server.When the gas or smell in sensor array monitoring of environmental, multiplexer is according to micro- place
The detection signal of control signal behavior output transducer that reason device is sent out, CO, H in a sensors sense environmental2S, methane
And CO2After gas, another 15 sensors detect CO, H in environment successively2S, methane and CO2Gas, and detection data is exported,
Finally all detection data composition data arrays { p }.This process logic is simple, therefore speed is very fast, need to take 5~10 altogether
Second.
The terminal server further includes display module and alarm module, and the display module is used to receive signal processing mould
The processing signal of block transmission simultaneously shows the processing signal, so as to obtain the type of object gas or smell and concentration letter
Breath；The alarm module be used for receive signal processing module transmission processing signal and according to it is described processing signal determining whether into
Row alarm.
The terminal server is equipped with the application software for the system development, the terminal server and microprocessor
Between carried out data transmission by the wireless mode of GPRS.
The gas monitoring system of the present invention, has the advantages that：
1st, the sensor array in the present invention shares circuit kit by a multiplexer, economizes on resources, reduces
Cost, while cause sensor chip miniaturization.
2nd, multiplexer of the invention exports corresponding sensor according to the control signal behavior that microprocessor is sent out and examines
Signal is surveyed, logical relation is simple and fast, can detect multiple gases or smell simultaneously, realize the miniaturization of device.3rd, this hair
Bright sensor can be detected simultaneously by four kinds of gas with various or smell, by bluetooth approach by the gas detected or smell
Type and concentration are shown, gas in environment or smell can be monitored in real time.
4th, whether the alarm module in terminal server alarms according to processing signal determining, so as to be carried out to user
Warning.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (7)
1. a kind of gas monitoring system, which is characterized in that for being identified to object gas or smell and monitoring in real time, including
Sensor array, multiplexer and microprocessor, the sensor array generate gas with various by m the biography of different responses
Sensor rearranges, and the corresponding sensor of control signal behavior that the multiplexer is sent out according to microprocessor is to target gas
Body or smell are identified or monitor；The signal output end of each sensor in the sensor array respectively with the multichannel
The input terminal electrical connection of multiplexer, the microprocessor sends control signal by n roots control line to multiplexer, more
Path multiplexer exports the signal of corresponding sensor detection gas or smell by the control signal behavior, the sensor
Quantity m≤2n-1；
Sensor in the sensor array includes substrate, sensitive layer and at least m+1 roots electrode, the sensitive layer are formed in base
Bottom surface, the electrode are drawn by the sensitive layer；
The system also includes signal amplification unit and AD conversion unit, the signal amplification unit is used for Sensor monitoring
To gas or smell detection signal be amplified and by it is amplified detection signal transmission to AD conversion unit, the mould
Number converting units are used to amplified detection signal being converted to digital signal and by digital data transmission to the first communication module,
The AD conversion unit is controlled by microprocessor；
The system also includes the resistance measuring module for measurement sensor array resistors value, described resistance measuring module one end
It is connected with AD conversion unit, the other end is connected with sensor array, and the range of the resistance measuring module passes through microprocessor
It is controlled.
2. gas monitoring system according to claim 1, which is characterized in that the microprocessor includes the first communication mould
Block.
3. gas monitoring system as claimed in any of claims 1 to 2, which is characterized in that the system also includes
Terminal server, the terminal server include signal processing module and the second communication module, and second communication module is used for
The digital signal of the first communication module transmission is received, and by the digital data transmission to signal processing module, at the signal
Reason module is used to that digital signal to be analyzed and handled.
4. gas monitoring system according to claim 3, which is characterized in that the signal processing module believes the number
Number corresponding data array { p } is compared with setting value { x }, when { p } is consistent with { x }, then judges gas in current environment
Concentration is suitable with setting value, when { p } is not consistent with { x }, then data array { p } is stored, so as to obtain processing signal.
5. gas monitoring system according to claim 4, which is characterized in that the terminal server further includes display mould
Block, the display module are used to receive the processing signal of signal processing module transmission and show the processing signal, from
And obtain the type and concentration information of object gas or smell.
6. gas monitoring system according to claim 5, which is characterized in that the terminal server further includes alarm mould
Block, the alarm module be used for receive signal processing module transmission processing signal and according to it is described processing signal determining whether into
Row alarm.
7. according to the gas monitoring system described in any one in claim 4-6, which is characterized in that the terminal server peace
Equipped with the application software for the system development, pass through wired or wireless mode between the terminal server and microprocessor
Carry out data transmission.
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223234A (en) * | 2015-09-08 | 2016-01-06 | 无锡百灵传感技术有限公司 | A kind of atmospheric environment intelligent monitor system |
| CN105954323B (en) * | 2016-06-02 | 2020-12-01 | 中国石油大学(华东) | An intelligent monitoring device for ultra-low concentration of gaseous pollutants emitted by thermal power plants |
| CN106841067B (en) * | 2017-01-17 | 2019-05-28 | 大连理工大学 | A kind of gas sensor based on selective band and its detection method |
| WO2018135100A1 (en) * | 2017-01-19 | 2018-07-26 | Tdk株式会社 | Gas sensor |
| CN106707013A (en) * | 2017-02-08 | 2017-05-24 | 深圳市硕亚科技有限公司 | Distributed low current detection system |
| CN108107773B (en) * | 2017-11-22 | 2020-01-14 | 苏州感闻环境科技有限公司 | Multichannel data acquisition system |
| CN108107086B (en) * | 2017-12-12 | 2020-03-24 | 苏州感闻环境科技有限公司 | Gas detection method based on array gas sensor and gas sensor |
| CN108226226A (en) * | 2017-12-19 | 2018-06-29 | 复旦大学 | A kind of multrirange gas sensor array and its automatic range switching logic |
| CN108956898A (en) * | 2018-08-30 | 2018-12-07 | 安徽星源环境科技有限公司 | A kind of gas-detecting device and system and gas detection method |
| EP3722796B1 (en) * | 2019-04-10 | 2022-08-03 | Carrier Corporation | Integrated, miniaturized, wireless sensing electronic platform for high resolution gas sensing |
| CN110006555B (en) * | 2019-04-17 | 2020-10-16 | 中国空气动力研究与发展中心超高速空气动力研究所 | Thermocouple and pressure sensor rapid measurement device |
| CN110749629A (en) * | 2019-10-25 | 2020-02-04 | 清华大学 | MEMS gas detection system and method |
| CN112697846A (en) * | 2020-12-28 | 2021-04-23 | 上海纳米技术及应用国家工程研究中心有限公司 | Construction method of self-driven multifunctional sensor based on carbon nano tube/two-dimensional material |
| CN112763550B (en) * | 2020-12-29 | 2022-10-28 | 中国科学技术大学 | Integrated gas detection system with odor recognition function |
| CN112858400A (en) * | 2021-01-16 | 2021-05-28 | 佛山鑫宏腾科技发展有限公司 | Sensor for detecting hydrogen sulfide gas at room temperature |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11160267A (en) * | 1997-11-27 | 1999-06-18 | Hochiki Corp | Sensitive membrane array type gas detector |
| US6994674B2 (en) * | 2002-06-27 | 2006-02-07 | Siemens Medical Solutions Usa, Inc. | Multi-dimensional transducer arrays and method of manufacture |
| CN2622700Y (en) * | 2003-04-25 | 2004-06-30 | 江苏大学 | Array signal regulating circuit of gas sensor |
| JP2008256472A (en) * | 2007-04-03 | 2008-10-23 | Nec Tokin Corp | Gas detector |
| CN201765479U (en) * | 2010-09-04 | 2011-03-16 | 中南林业科技大学 | A portable indoor environment monitoring device |
| CN202486118U (en) * | 2012-02-01 | 2012-10-10 | 中科宇图天下科技有限公司 | Gas environment emergency detection system |
| US9217721B2 (en) * | 2012-02-29 | 2015-12-22 | Ohio State Innovation Foundation | No sensor and sensor systems |
| CN102831753B (en) * | 2012-08-16 | 2015-10-28 | 上海霖睿自控设备有限公司 | Sun power gas detection alarm system |
| CN203719811U (en) * | 2014-01-14 | 2014-07-16 | 南京信息工程大学 | Weak voltage signal detection device of micro-voltage sensor |
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Application publication date: 20150513 Assignee: Jiangsu Zhiwen Intelligent Sensing Technology Co., Ltd. Assignor: SUZHOU HUIWEN NANO TECHNOLOGY CO., LTD. Contract record no.: 2018320010057 Denomination of invention: Gas monitoring system Granted publication date: 20180619 License type: Common License Record date: 20181116 |
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