CN107067664A - Equipment and the recognition methods of methane gas are recognized using broad spectrum type sensor - Google Patents
Equipment and the recognition methods of methane gas are recognized using broad spectrum type sensor Download PDFInfo
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- CN107067664A CN107067664A CN201710245983.9A CN201710245983A CN107067664A CN 107067664 A CN107067664 A CN 107067664A CN 201710245983 A CN201710245983 A CN 201710245983A CN 107067664 A CN107067664 A CN 107067664A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
- G08B29/188—Data fusion; cooperative systems, e.g. voting among different detectors
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- General Health & Medical Sciences (AREA)
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- Business, Economics & Management (AREA)
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- Emergency Alarm Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
A kind of equipment of use broad spectrum type sensor identification methane gas and recognition methods.Existing Domestic combustible gas alarm by steam, moisture, stove flame when cooking is too high, a large amount of dense smokes and boil Chinese medicine, heating drinks, egg is mouldy smelly situations such as influenceed, produce a large amount of erroneous judgement alarms, severe jamming daily life.Present invention composition includes：Cabinet（1）, have single chip computer device in described cabinet（6）, described single chip computer device respectively with signal processing apparatus A（4）, signal processing apparatus B（5）, concentration display device（7）, acoustic-optic alarm（8）With execution drive device（9）Circuit is connected, the electric supply installation for also having multiple-channel output in described cabinet（10）.Identification and overflow alarm of the present invention applied to methane gas.
Description
Technical field：
The present invention relates to a kind of detection of fuel gas, warning device, more particularly to a kind of broad spectrum type sensor identification methane gas
Equipment.
Background technology：
With scientific and technological progress, people's living standard is improved, and flammable gas alarm is used as one kind and the close phase of popular life
The safety device of pass, is just being increasingly subject to extensive attention, the demand sustainable growth of Domestic combustible gas alarm.In daily life
Occur in environment living flammable（Mainly methane）During gas leakage, gas sensor detects the alarm that its concentration reaches setting
During value, alarm signal will be sent, with remind user take evacuating personnel, force air draft, cut off the electricity supply, close down equipment etc. should
Anxious measure.It is effective prevent from being poisoned, explode, the accident such as fire occurs, so as to ensure people's life and the safety of property.It is existing
Domestic combustible gas alarm steam, moisture, stove flame when being cooked is too high, a large amount of dense smokes and boil Chinese medicine, plus
The influence for situations such as hot drinks, egg are mouldy smelly, produces a large amount of erroneous judgement alarms, the normal life of severe jamming people.
The content of the invention：
It is an object of the invention to provide a kind of equipment of use broad spectrum type sensor identification methane gas and recognition methods.
Above-mentioned purpose is realized by following technical scheme：
A kind of equipment that use broad spectrum type sensor recognizes methane gas, its composition includes：Alarm cabinet, described alarm
There is single chip computer device in cabinet, described single chip computer device is shown with signal processing apparatus A, signal processing apparatus B, concentration respectively
Multiple-channel output is additionally provided with device, acoustic-optic alarm and the circuit connection of execution drive device, described alarm cabinet
Electric supply installation.
The equipment that described use broad spectrum type sensor recognizes methane gas, described signal processing apparatus A is passed with gas
Sensor SA connections, described signal processing apparatus B is connected with gas sensor SB, described signal processing apparatus A and described
Signal processing apparatus B include the output of gas sensor be converted to the voltage output proportional with gas concentration circuit,
Output signal amplification circuit and filter circuit.
The equipment that described use broad spectrum type sensor recognizes methane gas, described gas sensor SA and described gas
Body sensor SB uses broad spectrum type semiconductor gas sensor, and described gas sensor SA working powers are V1, realization pair
The detection of methane gas, described gas sensor SB working powers are V2, realize the detection to other gases.
The equipment that described use broad spectrum type sensor recognizes methane gas, described single chip computer device includes using
There are the functions such as clock oscillator, house dog, power-off reset and 10 in STM8003F3P6 chips, piece（5 passages）Modulus turns
Parallel operation, it is possible to achieve collection to signal processing apparatus A output voltages U1 and signal processing apparatus B output voltages U2, change, deposit
The operations such as storage, comparison and differentiation.
The equipment of described use broad spectrum type sensor identification methane gas and recognition methods, its specific identification, detection, report
Alarm method is as follows：
（1）One reference voltage value Ur is set, and with storage in the form of digital quantity into the EEPROM of single-chip microcomputer；
（2）Gas sensor SA output exports U1 after signal processing apparatus A is changed, amplifies and filtered, and sends into single-chip microcomputer
（PD2 pins）Carry out A/D conversions；Data acquisition, storage；Numeral is carried out with reference voltage Ur to compare；Record U1 values etc. are grasped in real time
Make.
（3）Gas sensor SB output exports U2 after signal processing apparatus B is changed, amplifies and filtered, and feeding is single
Piece machine（PD3 pins）Carry out A/D conversions；Data acquisition, storage；Real-time numeral is carried out with reference voltage Ur to compare；Remember in real time
Record the operation such as comparison result.
（4）As U1 >=Ur,
And have U2 >=Ur then U1 represent be single methane gas concentration；
And have U2<Ur then U1 represent be other interference gas concentrations；
（5）Single-chip microcomputer is performed respectively according to the result compared：
A exports alarm command to acoustic-optic alarm, starts sound and light alarm, reminds staff's investigation failure, evacuation Field Force；
Drive device is arrived in the instruction of b output controls, is carried out pressure air draft, is automatically cut off power supply, closes down the emergency measures such as equipment；
C carries out data processing to U1 values, obtains real-time gas concentration value, is output to display device.
Beneficial effects of the present invention：
1. the present invention uses dual sensor detection technique, using semiconductor gas sensor under different operating voltages, to not
Different with the warm-up movement state of gas, caused thermal transition makes semiconductor carriers concentration different with mobility, causes it to export
Resistance also different phenomenon, realization is with broad spectrum type semiconductor transducer to methane（CH4）The correct examination of gas, is effectively avoided
The occurrence of wrong report, improve the reliability of alarm.
The gas sensor of the present invention, is using a pair of models are identical, the broad spectrum type semi-conductor gas sensing of parameter matching
Device, can exclude other gases mixed（Water vapour, alcohol, butane, hydrogen, carbon monoxide etc.）Interference, to first
The accurate measurement that alkane gas concentration is carried out.
The gas sensor of the present invention, is metal-oxide semiconductor (MOS) gas sensor, with sensitivity height, response speed
Hurry up, cost is low, it is poor to humidity sensitive the features such as.Especially inexpensive advantage, meets our national conditions, can be to promote family expenses can
The popularization of combustion gas alarm has positive impetus.
Simple in construction, the low cost of the present invention, it is easy to assemble, debug and repair, industrial circle can be incorporated into, applied
Chemical industry, oil, combustion gas, the field such as steel is high to need the department for measuring single concentration of methane gas to provide cost performance
Detection device.
The technology of the present invention can be transplanted, expanded, to other gases mixed（Such as：Ethanol, acetic acid, hydrogen
Gas, butane, carbon monoxide etc.）Single gas concentration measurement is carried out, to meet the specific demand of users.
Brief description of the drawings：
Accompanying drawing 1 is the structural representation of the present invention.
Accompanying drawing 2 is signal processing apparatus A circuit theory diagrams.
Accompanying drawing 3 is signal processing apparatus B circuit theory diagrams.
Accompanying drawing 4 is single chip circuit schematic diagram.
Accompanying drawing 5 is electric supply installation block diagram.
Accompanying drawing 6 is the electric supply installation circuit theory diagrams of accompanying drawing 5.
In figure：1-alarm cabinet；2-gas sensor SA；3-gas sensor SB；4-signal processing device
Put A；5-signal processing apparatus B；6-single chip computer device；7-concentration display device；8-acoustic-optic alarm；9-hold
Horizontal drive device；The electric supply installation of 10-multiple-channel output.
Embodiment：
Embodiment 1：
A kind of equipment that use broad spectrum type sensor recognizes methane gas, its composition includes：Alarm cabinet 1, described alarm
Have single chip computer device 6 in device cabinet, described single chip computer device respectively with signal processing apparatus A4, signal processing apparatus B5, dense
Spend display device 7, acoustic-optic alarm 8 and perform in the connection of the circuit of drive device 9, described case and be additionally provided with multiple-channel output
Electric supply installation 10.
Embodiment 2：
The equipment that use broad spectrum type sensor according to embodiment 1 recognizes methane gas, described signal processing apparatus A and
Signal processing apparatus B is connected with gas sensor SA2 and gas sensor SB3 circuits respectively, described signal processing apparatus A and
B includes the output of gas sensor to be converted to the circuit of the voltage output proportional with gas concentration, output signal amplification
Circuit and filter circuit.
Embodiment 3：
The equipment that use broad spectrum type sensor according to embodiment 1 or 2 recognizes methane gas, described gas sensor SA
Using broad spectrum type semiconductor gas sensor, working power is V1, is realized to methane（CH4）The detection of gas；Described gas
Sensor SB also uses broad spectrum type semiconductor gas sensor, and working power is V2, realizes the detection to other gases.
Embodiment 4：
The equipment that use broad spectrum type sensor according to embodiment 1 or 2 recognizes methane gas, described single chip computer device bag
Include using STM8003F3P6 chips, piece is interior to have the functions such as clock oscillator, house dog, power-off reset and 10（5 passages）
Analog-digital converter, it is possible to achieve collection to signal processing apparatus A output voltages U1 and signal processing apparatus B output voltages U2,
The operations such as conversion, storage, comparison and differentiation.
Embodiment 5：
The equipment that use broad spectrum type sensor according to embodiment 1 or 2 recognizes methane gas, the confession of described multiple-channel output
Electric installation, with the output of 5 tunnels.Working power V1, V2 can be provided respectively for gas sensor SA and SB；For signal processing apparatus A
Working power VA is provided with B（Simulation）；Work electricity is provided for single chip computer device, concentration display device and acoustic-optic alarm etc.
Source VS（Numeral）；Working power VQ is provided to perform drive device.
Embodiment 6：
The recognition methods of the equipment of use broad spectrum type sensor identification methane gas according to embodiment 1 to 5, its is specific
Identification, detection, alarm method are as follows：
（1）One reference voltage value Ur is set, and with storage in the form of digital quantity into the EEPROM of single-chip microcomputer；
（2）Gas sensor SA output exports U1 after signal processing apparatus A is changed, amplifies and filtered, and sends into single-chip microcomputer
（PD2 pins）Carry out A/D conversions；Data acquisition, storage；Numeral is carried out with reference voltage Ur to compare；Record U1 values etc. are grasped in real time
Make.
（3）Gas sensor SB output exports U2 after signal processing apparatus B is changed, amplifies and filtered, and feeding is single
Piece machine（PD3 pins）Carry out A/D conversions；Data acquisition, storage；Real-time numeral is carried out with reference voltage Ur to compare；Remember in real time
Record the operation such as comparison result.
（4）As U1 >=Ur,
And have U2 >=Ur then U1 represent be single methane gas concentration；
And have U2<Ur then U1 represent be other interference gas concentrations；
（5）Single-chip microcomputer is performed respectively according to the result compared：
A exports alarm command to acoustic-optic alarm, starts sound and light alarm, reminds staff's investigation failure, evacuation Field Force；
Drive device is arrived in the instruction of b output controls, is carried out pressure air draft, is automatically cut off power supply, closes down the emergency measures such as equipment；
C carries out data processing to U1 values, obtains real-time gas concentration value, is output to display device.
Claims (5)
1. a kind of equipment that use broad spectrum type sensor recognizes methane gas, its composition includes：Alarm cabinet, it is characterized in that：
Have single chip computer device in described alarm cabinet, described single chip computer device respectively with signal processing apparatus A, signal processing device
Put in B, concentration display device, acoustic-optic alarm and the circuit connection of execution drive device, described alarm cabinet and also set up
There is the electric supply installation of multiple-channel output.
2. the equipment that use broad spectrum type sensor according to claim 1 recognizes methane gas, it is characterized in that：Described letter
Number processing unit A is connected with gas sensor SA, and described signal processing apparatus B is connected with gas sensor SB, described letter
Number processing unit A and described signal processing apparatus B includes the output of gas sensor to be converted to gas concentration in just
Circuit, output signal amplification circuit and the filter circuit of the voltage output of ratio.
3. the equipment that use broad spectrum type sensor according to claim 2 recognizes methane gas, it is characterized in that：Described gas
Body sensor SA and described gas sensor SB use broad spectrum type semiconductor gas sensor, described gas sensor SA
Working power is V1, realizes the detection to methane gas, and described gas sensor SB working powers are V2, are realized to other gas
The detection of body.
4. the equipment that the use broad spectrum type sensor according to claim 1 or 2 or 3 recognizes methane gas, it is characterized in that：Institute
The single chip computer device stated, which includes using, has the work(such as clock oscillator, house dog, power-off reset in STM8003F3P6 chips, piece
Can and 10（5 passages）Analog-digital converter, it is possible to achieve to signal processing apparatus A output voltages U1 and signal processing apparatus B
The operations such as output voltage U2 collection, conversion, storage, comparison and differentiation.
5. equipment and the recognition methods of the use broad spectrum type sensor identification methane gas according to one of claim 1-5,
It is characterized in that：This method comprises the following steps：
（1）One reference voltage value Ur is set, and with storage in the form of digital quantity into the EEPROM of single-chip microcomputer；
（2）Gas sensor SA output exports U1 after signal processing apparatus A is changed, amplifies and filtered, and sends into single-chip microcomputer
（PD2 pins）Carry out A/D conversions；Data acquisition, storage；Numeral is carried out with reference voltage Ur to compare；Record U1 values etc. are grasped in real time
Make.
（3）Gas sensor SB output exports U2 after signal processing apparatus B is changed, amplifies and filtered, and sends into single-chip microcomputer
（PD3 pins）Carry out A/D conversions；Data acquisition, storage；Real-time numeral is carried out with reference voltage Ur to compare；Record compares in real time
Result etc. is operated.
（4）As U1 >=Ur,
And have U2 >=Ur then U1 represent be single methane gas concentration；
And have U2<Ur then U1 represent be other interference gas concentrations；
（5）Single-chip microcomputer is performed respectively according to the result compared：
A exports alarm command to acoustic-optic alarm, starts sound and light alarm, reminds staff's investigation failure, evacuation Field Force；
Drive device is arrived in the instruction of b output controls, is carried out pressure air draft, is automatically cut off power supply, closes down the emergency measures such as equipment；
C carries out data processing to U1 values, obtains real-time gas concentration value, is output to display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710245983.9A CN107067664B (en) | 2017-04-14 | 2017-04-14 | equipment and method for identifying methane gas by using broad-spectrum sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710245983.9A CN107067664B (en) | 2017-04-14 | 2017-04-14 | equipment and method for identifying methane gas by using broad-spectrum sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107067664A true CN107067664A (en) | 2017-08-18 |
| CN107067664B CN107067664B (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710245983.9A Active CN107067664B (en) | 2017-04-14 | 2017-04-14 | equipment and method for identifying methane gas by using broad-spectrum sensor |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19524643A1 (en) * | 1995-07-06 | 1997-01-09 | Huberg Gasmestechnik Gmbh | Safety device for detecting the presence of harmful gases in rooms - electrically activates magnetic valve to block gas supply and cut off mains |
| GB2378558B (en) * | 2001-07-21 | 2004-05-12 | Munawar Waheed | Domestic gas detection |
| CN2906427Y (en) * | 2006-02-13 | 2007-05-30 | 房千贺 | Device for monitoring carbon dioxide and dusty gas in doors |
| CN202677578U (en) * | 2012-03-25 | 2013-01-16 | 保定市联讯电子科技开发有限公司 | Early-stage gas on-line monitoring and alarm system |
| CN202838621U (en) * | 2012-10-09 | 2013-03-27 | 邱柏康 | Gas leakage alarm controller with intelligent alarm threshold |
| CN203480654U (en) * | 2013-09-09 | 2014-03-12 | 绍兴文理学院 | Methane alarm |
| CN106918626A (en) * | 2017-04-14 | 2017-07-04 | 中国石油化工股份有限公司 | Dangerous atmosphere comprehensive state fingerprint identification method |
| CN206649642U (en) * | 2017-04-14 | 2017-11-17 | 哈尔滨佳云科技有限公司 | Use the equipment of broad spectrum type sensor identification methane gas |
-
2017
- 2017-04-14 CN CN201710245983.9A patent/CN107067664B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19524643A1 (en) * | 1995-07-06 | 1997-01-09 | Huberg Gasmestechnik Gmbh | Safety device for detecting the presence of harmful gases in rooms - electrically activates magnetic valve to block gas supply and cut off mains |
| GB2378558B (en) * | 2001-07-21 | 2004-05-12 | Munawar Waheed | Domestic gas detection |
| CN2906427Y (en) * | 2006-02-13 | 2007-05-30 | 房千贺 | Device for monitoring carbon dioxide and dusty gas in doors |
| CN202677578U (en) * | 2012-03-25 | 2013-01-16 | 保定市联讯电子科技开发有限公司 | Early-stage gas on-line monitoring and alarm system |
| CN202838621U (en) * | 2012-10-09 | 2013-03-27 | 邱柏康 | Gas leakage alarm controller with intelligent alarm threshold |
| CN203480654U (en) * | 2013-09-09 | 2014-03-12 | 绍兴文理学院 | Methane alarm |
| CN106918626A (en) * | 2017-04-14 | 2017-07-04 | 中国石油化工股份有限公司 | Dangerous atmosphere comprehensive state fingerprint identification method |
| CN206649642U (en) * | 2017-04-14 | 2017-11-17 | 哈尔滨佳云科技有限公司 | Use the equipment of broad spectrum type sensor identification methane gas |
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| CN107067664B (en) | 2019-12-13 |
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