CN107045014A - Fuel cell sensor automatic protective system and control method - Google Patents
Fuel cell sensor automatic protective system and control method Download PDFInfo
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- CN107045014A CN107045014A CN201710403920.1A CN201710403920A CN107045014A CN 107045014 A CN107045014 A CN 107045014A CN 201710403920 A CN201710403920 A CN 201710403920A CN 107045014 A CN107045014 A CN 107045014A
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- fuel cell
- magnetic valve
- cell sensor
- protective system
- microcontroller
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- 239000000446 fuel Substances 0.000 title claims abstract description 71
- 230000001681 protective effect Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 28
- 238000012545 processing Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Molecular Biology (AREA)
- Automation & Control Theory (AREA)
- Engineering & Computer Science (AREA)
- Electrochemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a kind of fuel cell sensor automatic protective system and control method, including gas path pipe, the fuel cell sensor being placed on gas path pipe, pressure sensor and the first magnetic valve；The fuel cell sensor is placed in test cavity, and it is external that the pressure sensor and the first magnetic valve are placed in test chamber；The output end of the pressure sensor and fuel cell sensor is connected to the input of microcontroller by signal processing circuit, and the output end of the microcontroller is connected by drive control circuit with the first magnetic valve.The present invention can be in gas path pipe pressure value and gas concentration go beyond the scope after Self-shut electromagnetic valve; the air inlet of cut-out test cavity and outlet gas circuit; fuel cell sensor is enclosed in test cavity; realize outrange protection and over-voltage protecting function so that solve the problems, such as existing fuel cell sensor because working environment is poor and it is unstable and caused by infringement.
Description
Technical field
Protected automatically the present invention relates to a kind of automatic protective system and control method, more particularly to a kind of fuel cell sensor
Protecting system and control method.
Background technology
Fuel cell sensor is made up of electrode and electrolyte.After entering sensor irreversible chemistry occurs for tested gas
Reaction.Sensor electrolyte is constantly consumed in chemical reaction, untill exhausting, just as being burned out some fuel.
Therefore, the life-span of sensor is relevant with the concentration of surveyed gas, and concentration is bigger, consumes faster, sensor life-time is shorter.
Using the central time that should be tried one's best and reduce sensor in test environment.Under non-measured state, sensor is enclosed in a certain
In cavity, it is possible to reduce the time of contact with extraneous gas, extend the service life of sensor.
Another distinguishing feature of fuel cell sensor is to be pressurized, under larger negative pressure and positive pressure, pole
Fragile, its inner material is usually constructed with stronger corrosivity, once being damaged because of compression, is very unlikely to processing.
In actual applications, operating personnel are in ventilation, it is necessary to take special care to adjust pressure, with anti-tamper sensor,
But in many operating modes, bleed pressure is unstable, might have instantaneous pressure and causes sensor degradation.In measurement process
In, if gas concentration is raised, without the gas circuit at shut-off sensor two ends in time, sensor can be made to work long hours in gas
In the higher environment of concentration, its response speed and reduction of service life can be so reduced.Urgently occur a kind of there is sensor
The system that protection was protected and outranged to pressure.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of fuel cell sensor automatic protective system and controlling party
Method, can solve the problem that existing fuel cell sensor because working environment is poor and it is unstable and caused by infringement problem.
It is automatic that the present invention is to provide a kind of fuel cell sensor for the technical scheme that solution above-mentioned technical problem is used
Protection system, including gas path pipe, the fuel cell sensor being placed on gas path pipe, pressure sensor and the first magnetic valve；
The fuel cell sensor is placed in test cavity, and it is external that the pressure sensor and the first magnetic valve are placed in test chamber；Institute
The output end for stating pressure sensor and fuel cell sensor is connected to the input of microcontroller, institute by signal processing circuit
The output end for stating microcontroller is connected by drive control circuit with the first magnetic valve.
Above-mentioned fuel cell sensor automatic protective system, wherein, first magnetic valve is sensed positioned at fuel cell
The inlet end of device.
Above-mentioned fuel cell sensor automatic protective system, wherein, in addition to the second electromagnetism being placed on gas path pipe
Valve, second magnetic valve is located at the outlet side of fuel cell sensor and external positioned at test chamber, second magnetic valve with
The output end connection of drive control circuit.
Above-mentioned fuel cell sensor automatic protective system, wherein, in addition to bypass duct, the one of the bypass duct
End is connected on the gas path pipe of the first magnetic valve air inlet side, and the other end of the bypass duct is connected to the second magnetic valve outlet
On the gas path pipe of side.
Above-mentioned fuel cell sensor automatic protective system, wherein, the pressure sensor is located at the first magnetic valve
Inlet end.
Above-mentioned fuel cell sensor automatic protective system, wherein, it is additionally provided with and fuel cell in the test chamber body
The connector that sensor is connected with the signal input part of signal processing circuit.
Above-mentioned fuel cell sensor automatic protective system, wherein, the microcontroller is also associated with input equipment.
Above-mentioned fuel cell sensor automatic protective system, wherein, the signal processing circuit, microcontroller, driving
Control circuit and input equipment external located at test chamber.
The present invention also provides a kind of using above-mentioned fuel cell sensor automatic protective system to solve above-mentioned technical problem
Control method, wherein, comprise the following steps：S1, the advance concentration range of setting in the microcontroller, pressure limit and recovery week
Phase；S2, the pressure detected using pressure sensor in gas path pipe；S3, utilize fuel cell sensor detection gas concentration；
The signal of pressure sensor and fuel cell sensor is amplified, filtered by S4, signal processor circuit, A/D conversion after
Pass to microcontroller；S5, microcontroller are closed according to the gas concentration and pressure value measured to drive control circuit output signal
Close or opening gas circuit pipeline on magnetic valve.
The control method of above-mentioned fuel cell sensor automatic protective system, wherein, microcontroller in the step S5
Judgement control process it is as follows：Whether a, gas concentration exceed concentration range, if so, then being closed to drive control circuit output signal
Close the first magnetic valve and the second magnetic valve；Whether b, pressure value exceed pressure limit, if so, to drive control circuit output signal
Close the first magnetic valve and the second magnetic valve；If c, gas concentration are without departing from concentration range, and pressure value is without departing from pressure limit,
Then keep the current state of the first magnetic valve and the second magnetic valve；When gas concentration beyond concentration range or pressure value beyond pressure
During power scope, the first magnetic valve and the second magnetic valve are closed, the microcontroller recovers the cycle every one, makes a logic
Judge, if gas concentration and pressure value are all returned to after concentration range and pressure limit, microcontroller output signal makes drive
Dynamic control circuit open the first magnetic valve and the second magnetic valve or allow user by input equipment open the first magnetic valve and
Second magnetic valve.
Present invention contrast prior art has following beneficial effect：The fuel cell sensor automatic protection that the present invention is provided
System and control method, Self-shut electromagnetic valve after pressure value and gas concentration that can be in gas path pipe go beyond the scope, cut
The air inlet of disconnected test cavity and outlet gas circuit, fuel cell sensor is enclosed in test cavity, realizes and outranges protection
And over-voltage protecting function so that solve existing fuel cell sensor because working environment is poor and it is unstable and caused by infringement ask
Topic.After gas concentration and pressure return to the scope of setting, magnetic valve can be automatically opened up, makes fuel cell sensor normal
Test, realizes intelligent control, its working condition is paid close attention to without user.
Brief description of the drawings
Fig. 1 is the gas circuit connection diagram of fuel cell sensor automatic protective system of the present invention；
Fig. 2 is the circuit connection diagram of fuel cell sensor automatic protective system of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the gas circuit connection diagram of fuel cell sensor automatic protective system of the present invention；Fig. 2 is fuel of the present invention
The circuit connection diagram of battery sensor automatic protective system.
Refer to Fig. 1 and Fig. 2, the fuel cell sensor automatic protective system that the present invention is provided, including a set of protection gas
Road and a set of protection circuit.Protect gas circuit include gas path pipe L1, and be placed on gas path pipe fuel cell sensor S1, pressure
Force snesor S2, the first magnetic valve M1, the second magnetic valve M2, and bypass duct L2.
Specifically, fuel cell sensor S1 is placed in test cavity, and test cavity goes out provided with an air inlet and one
Gas port, gas path pipe is entered in test cavity by the air inlet and gas outlet.First magnetic valve M1 is located at test cavity air inlet
On gas path pipe outside mouthful, the second magnetic valve M2 is on the gas path pipe outside test cavity gas outlet, and pressure sensor S2 is set
In on the external optional position of test chamber.One end of bypass duct is connected on the gas path pipe of the first magnetic valve M1 air inlet sides,
The other end is connected on the gas path pipe of the second magnetic valve M2 outlets side.
Any part that pressure sensor S2 can be located on gas path pipe, in the present embodiment, pressure sensor S2 is located at
First magnetic valve M1 inlet end.The bore of bypass duct is smaller.
In order to realize the automatic protection of fuel cell sensor, protection circuit includes microcontroller, signal processing circuit, drive
Dynamic control circuit and input equipment.
Specifically, pressure sensor S2, fuel cell sensor S1 output end and signal processing circuit signal input
End connection, the signal output part of signal processing circuit is connected with microcontroller, the input and microcontroller of drive control circuit
Connection, the output end of drive control circuit is connected with the first magnetic valve M1 and the second magnetic valve M2；Input equipment and microcontroller
Connection.
In the present embodiment, test cavity is additionally provided with one and fuel cell sensor S1 and the signal of signal processing circuit
The connector that input is connected.The course of work is as follows：
S1, by input equipment to microcontroller set concentration range, pressure limit and recover the cycle；
S2, pressure sensor detect to protect the pressure in gas circuit；
S3, fuel cell sensor detection gas concentration；
The signal of pressure sensor and fuel cell sensor is amplified, filtered by S4, signal processor circuit, A/D conversions
Pass to microcontroller later；
S5, microcontroller make logic judgment as follows according to the gas concentration and pressure value that measure：
Whether a, gas concentration exceed concentration range, if so, then making control circuit close the first electricity to control circuit output signal
Magnet valve and the second magnetic valve.
Whether b, pressure value exceed pressure limit, if so, making control circuit close the first electricity to control circuit output signal
Magnet valve and the second magnetic valve.
If c, gas concentration are without departing from concentration range, and pressure value is without departing from pressure limit, then keep the first magnetic valve and
The current state of second magnetic valve.
When gas concentration exceeds pressure limit beyond concentration range or pressure value, the first magnetic valve and the second electricity are closed
Magnet valve, microcontroller every one recover the cycle, make a logic judgment, if gas concentration and pressure value all return to it is dense
Spend after scope and pressure limit, microcontroller output signal makes control circuit open the first magnetic valve and the second magnetic valve.
The present invention can solve the problem that existing fuel cell sensor because working environment is poor and it is unstable and caused by infringement problem,
Have the advantages that：
（1）Self-shut electromagnetic valve after pressure value and gas concentration of the present invention in gas path pipe go beyond the scope, cut-out test
The air inlet of cavity and outlet gas circuit, fuel cell sensor is enclosed in test cavity, realizes and outranges protection and overvoltage
Defencive function.
（2）The present invention can automatically open up magnetic valve after gas concentration and pressure return to the scope of setting, make fuel electric
Pond sensor proper testing, realizes intelligent control.
（3）The present invention is simple in construction, and the material used is common used material, is its large-scale popularization and application, establishes
Solid foundation.
Although the present invention is disclosed as above with preferred embodiment, so it is not limited to the present invention, any this area skill
Art personnel, without departing from the spirit and scope of the present invention, when a little modification can be made and perfect, therefore the protection model of the present invention
Enclose when by being defined that claims are defined.
Claims (10)
1. a kind of fuel cell sensor automatic protective system, it is characterised in that including gas path pipe, be placed on gas path pipe
Fuel cell sensor, pressure sensor and the first magnetic valve；The fuel cell sensor is placed in test cavity, the pressure
It is external that force snesor and the first magnetic valve are placed in test chamber；The output end of the pressure sensor and fuel cell sensor passes through
Signal processing circuit is connected to the input of microcontroller, and the output end of the microcontroller passes through drive control circuit and first
Magnetic valve is connected.
2. fuel cell sensor automatic protective system according to claim 1, it is characterised in that first magnetic valve
Positioned at the inlet end of fuel cell sensor.
3. fuel cell sensor automatic protective system according to claim 2, it is characterised in that also including being placed in gas circuit
The second magnetic valve on pipeline, second magnetic valve is located at the outlet side of fuel cell sensor and external positioned at test chamber,
Second magnetic valve is connected with the output end of drive control circuit.
4. fuel cell sensor automatic protective system according to claim 3, it is characterised in that also including shunt valve
Road, one end of the bypass duct is connected on the gas path pipe of the first magnetic valve air inlet side, the other end of the bypass duct
On the gas path pipe for being connected to the second magnetic valve outlet side.
5. fuel cell sensor automatic protective system according to claim 4, it is characterised in that the pressure sensor
Located at the inlet end of the first magnetic valve.
6. fuel cell sensor automatic protective system according to claim 1, it is characterised in that in the test chamber body
It is additionally provided with the connector being connected with the signal input part of fuel cell sensor and signal processing circuit.
7. fuel cell sensor automatic protective system according to claim 1, it is characterised in that the microcontroller is also
It is connected with input equipment.
8. fuel cell sensor automatic protective system according to claim 7, it is characterised in that the signal transacting electricity
Road, microcontroller, drive control circuit and input equipment are external located at test chamber.
9. a kind of control method of fuel cell sensor automatic protective system, it is characterised in that appointed using such as claim 1-8
Fuel cell sensor automatic protective system described in one, the control method comprises the following steps：
S1, the advance concentration range of setting in the microcontroller, pressure limit and recovery cycle；
S2, the pressure detected using pressure sensor in gas path pipe；
S3, utilize fuel cell sensor detection gas concentration；
The signal of pressure sensor and fuel cell sensor is amplified, filtered by S4, signal processor circuit, A/D conversions
Pass to microcontroller later；
S5, microcontroller turn off or on gas according to the gas concentration and pressure value that measure to drive control circuit output signal
Magnetic valve on the pipeline of road.
10. the control method of fuel cell sensor automatic protective system according to claim 9, it is characterised in that adopt
With fuel cell sensor automatic protective system as claimed in claim 3, the judgement control of microcontroller in the step S5
Process is as follows：
A, gas concentration whether exceed concentration range, if so, then to drive control circuit output signal close the first magnetic valve and
Second magnetic valve；
Whether b, pressure value exceed pressure limit, if so, closing the first magnetic valve and second to drive control circuit output signal
Magnetic valve；
If c, gas concentration are without departing from concentration range, and pressure value then keeps the first magnetic valve and second without departing from pressure limit
The current state of magnetic valve；
When gas concentration exceeds pressure limit beyond concentration range or pressure value, the first magnetic valve and the second electromagnetism are closed
Valve, the microcontroller recovers the cycle every one, a logic judgment is made, if gas concentration and pressure value are all returned to
After concentration range and pressure limit, then microcontroller output signal makes drive control circuit open the first magnetic valve and the second electromagnetism
Valve allows user to open the first magnetic valve and the second magnetic valve by input equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403920.1A CN107045014A (en) | 2017-06-01 | 2017-06-01 | Fuel cell sensor automatic protective system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403920.1A CN107045014A (en) | 2017-06-01 | 2017-06-01 | Fuel cell sensor automatic protective system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107045014A true CN107045014A (en) | 2017-08-15 |
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ID=59546779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710403920.1A Pending CN107045014A (en) | 2017-06-01 | 2017-06-01 | Fuel cell sensor automatic protective system and control method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107045014A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101241997A (en) * | 2008-01-29 | 2008-08-13 | 重庆宗申技术开发研究有限公司 | Fuel battery gas supply and discharge control device with protective gas |
| CN201909090U (en) * | 2011-01-07 | 2011-07-27 | 上海昶艾电子科技有限公司 | Double electromagnetic valve seat provided with bypass and capable of protecting sensor |
| CN103698380A (en) * | 2013-11-05 | 2014-04-02 | 上海昶艾科技发展有限公司 | Electrochemical trace oxygen analyzer for effectively prolonging usage life of sensor |
| CN206804215U (en) * | 2017-06-01 | 2017-12-26 | 上海昶艾电子科技有限公司 | Fuel cell sensor automatic protective system |
-
2017
- 2017-06-01 CN CN201710403920.1A patent/CN107045014A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101241997A (en) * | 2008-01-29 | 2008-08-13 | 重庆宗申技术开发研究有限公司 | Fuel battery gas supply and discharge control device with protective gas |
| CN201909090U (en) * | 2011-01-07 | 2011-07-27 | 上海昶艾电子科技有限公司 | Double electromagnetic valve seat provided with bypass and capable of protecting sensor |
| CN103698380A (en) * | 2013-11-05 | 2014-04-02 | 上海昶艾科技发展有限公司 | Electrochemical trace oxygen analyzer for effectively prolonging usage life of sensor |
| CN206804215U (en) * | 2017-06-01 | 2017-12-26 | 上海昶艾电子科技有限公司 | Fuel cell sensor automatic protective system |
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Application publication date: 20170815 |