CN109709164A - A kind of gas-detecting device and EW system - Google Patents
A kind of gas-detecting device and EW system Download PDFInfo
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- CN109709164A CN109709164A CN201910114732.6A CN201910114732A CN109709164A CN 109709164 A CN109709164 A CN 109709164A CN 201910114732 A CN201910114732 A CN 201910114732A CN 109709164 A CN109709164 A CN 109709164A
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- 238000001514 detection method Methods 0.000 claims abstract description 43
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 41
- 239000001257 hydrogen Substances 0.000 claims description 37
- 229910052739 hydrogen Inorganic materials 0.000 claims description 37
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 36
- 238000004891 communication Methods 0.000 claims description 11
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 239000011943 nanocatalyst Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 10
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The present invention provides a kind of gas-detecting device and EW systems.Gas-detecting device includes: detection module, WiFi module and control module；The control module is electrically connected with detection module and WiFi module respectively；The control module detects object gas by controlling the detection module, and the concentration for the object gas that will test is sent to exterior terminal by WiFi module.The present invention controls the detection module by control module and detects object gas, and the concentration for the object gas that will test is sent to exterior terminal by WiFi module, it realizes the long-range monitoring to target gas levels, has the advantages that the response time is short, detection limit is low, response range is big and long service life.
Description
Technical field
The present embodiments relate to field of fuel cell technology, and in particular to a kind of gas-detecting device and distant early warning system
System.
Background technique
With social development, environmental pressure constantly increases, and various energy-saving and emission-reduction products continuously emerge, and hydrogen fuel cell is exactly
It is quickly grown under this overall situation.Hydrogen fuel cell is to pass through using hydrogen fuel as reducing agent, oxygen as oxidant
Chemical energy is changed into the battery of electric energy by the combustion reaction of fuel.
At present in automotive field, have begun using hydrogen fuel cell as the research of the power device of automobile.Hydrogen fuel
Battery car has many advantages, such as that charging is fast, continuation of the journey is grown, has excellent performance, energy conservation and environmental protection.However links, the hydrogen fuel such as storing and using
All there is certain hydrogen gas leakage risk in battery.Hydrogen is fuel gas, and content is met open fire in 4%-75% and easily sent out in air
Raw explosion.Therefore interior density of hydrogen is monitored, and then it is highly important for carrying out early warning to leakage.
But existing interior hydrogen monitoring device is there is also response time length, sensitivity is not high, detects the sensing of hydrogen
The problems such as device service life is short.
Summary of the invention
For the problems of the prior art, the present invention provides a kind of gas-detecting device and EW system, is installed on
Near hydrogen storage bottle exit and operator seat, the detection to leakage hydrogen is realized.
To achieve the above object, the present invention the following technical schemes are provided:
On the one hand, the present invention provides a kind of gas-detecting devices, comprising: detection module, WiFi module and control module；
The control module is electrically connected with detection module and WiFi module respectively；
The control module detects object gas, and the concentration for the object gas that will test by controlling the detection module
Exterior terminal is sent to by WiFi module.
Wherein, the detection module includes: hydrogen detection circuit；
The output end of the hydrogen detection circuit is connected with the input terminal of control module, and the hydrogen detection circuit will adopt
The density of hydrogen data of collection are sent to control module.
Wherein, the hydrogen detection circuit, comprising: sensing assembly, resistance R1, resistance R2 and resistance R3；
Wherein, sensing assembly, resistance R1, resistance R2 and resistance R3 constitute Wheatstone bridge.
Pass through nanocatalyst CexMn1-xO2To SnO2It is surface modified and obtains the sensing assembly.
Further, the detection module, further includes: Temperature Humidity Sensor；
The output end of the Temperature Humidity Sensor is connected with the input terminal of control module, and the Temperature Humidity Sensor will be adopted
The data of the Temperature and Humidity module of collection is sent to control module.
Wherein, the WiFi module uses EMW3162 wireless communication unit.
Wherein, the control module is single-chip microcontroller.
On the other hand, the present invention provides a kind of EW systems, comprising: gas-detecting device, terminal device and electricity
Magnet valve door；
The output end of gas-detecting device is connected with the input terminal of terminal device, the output end and solenoid valve of terminal device
The control terminal of door is connected；
The gas concentration that the gas-detecting device will test through wireless communication is sent to terminal device, so that
Terminal device judges whether the gas concentration is more than pre-set gas concentration；
The terminal device is closed and is arranged on storage cylinder gas outlet when judging that gas concentration is more than pre-set gas concentration
Electromagnetic valve and carry out early warning；
Wherein, gas-detecting device uses gas-detecting device described above.
Further, further includes: driving device, the driving device pass through air draft system for driving automobile exhaust system
System is exhausted；
The output end of the terminal device is connected with the control terminal of the driving device, and terminal device is sent out to driving device
Instruction is sent, so that driving device driving exhaust system is opened or closed.
Wherein, the terminal device is computer or mobile intelligent terminal.
A kind of gas-detecting device and EW system of the present invention control the detection mould by control module
Block detects object gas, and the concentration for the object gas that will test is sent to exterior terminal by WiFi module, realizes to target
The long-range monitoring of gas concentration has the advantages that the response time is short, detection limit is low, response range is big and long service life.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of gas-detecting device provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of hydrogen detection circuit in a kind of gas-detecting device provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of EW system provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a kind of gas-detecting devices, referring to Fig. 1, comprising: detection module 10, WiFi module 30
With control module 20；
Control module 20 is electrically connected with detection module 10 and WiFi module 30 respectively；
Control module 20 detects object gas, and the concentration for the object gas that will test by controlling the detection module 10
Exterior terminal is sent to by WiFi module 30.It remotely detects and monitors to realize object gas.Gas-detecting device
Power module improves the applicability of gas-detecting device using lithium ion battery convenient for the installation of gas-detecting device.
Wherein, detection module 10 includes: hydrogen detection circuit；The output end of hydrogen detection circuit is defeated with control module 20
Enter end to be connected, the density of hydrogen data of acquisition are sent to control module 20 by the hydrogen detection circuit.When implementing, referring to
Fig. 2, hydrogen detection circuit, comprising: sensing assembly, resistance R1, resistance R2 and resistance R3；
Sensing assembly, resistance R1, resistance R2 and resistance R3 constitute Wheatstone bridge, and forming one can be general, small-sized
The module of change.The data of the content for the Hydrogen in Air that hydrogen detection circuit will test by way of serial communication are transmitted to
Control module 20.
It should be noted that the resistance of sensing assembly changes with the variation of density of hydrogen, can be incited somebody to action by voltmeter
The resistance variations of sensing assembly are converted into visual pressure difference, establish the relationship of pressure difference and density of hydrogen；And pass through nanometer
Catalyst CexMn1-xO2To SnO2It is surface modified acquisition sensing assembly.The surface modification of nano material refers to physics side
Method, chemical method change the structure and state of nano-particle surface, realize the control to nano-particle surface.
Further, detection module 10, further includes: Temperature Humidity Sensor；
The output end of the Temperature Humidity Sensor is connected with the input terminal of control module 20, and the Temperature Humidity Sensor will
The data of the Temperature and Humidity module of acquisition is sent to control module 20.
It easily explodes practice have shown that Hydrogen in Air content meets open fire in 4%-75%.The content value is with gas
Temperature and humidity, pressure factor influence and change, humidity is lower, temperature is higher and the more high then hydrogen explosion concentration range of pressure more
Greatly.The detection of temperature and humidity is carried out while detecting density of hydrogen, convenient for the determination to explosion ratio range, improves detection module
10 detection accuracy.
Further, Temperature Humidity Sensor uses BME280 sensor, and BME280 sensor passes through I2C interface for acquisition
Data of the Temperature and Humidity module is transmitted to control module 20.BME280 sensor monitors pressure, humidity and the temperature in ambient enviroment, and passes through
The related data monitored is transferred to control module 20 by I2C communication mode.BME280 sensor bulk is only 2.5mm
X2.5mm x 0.93mm, using section space-efficient 8 pin pad network array (LGA) packing forms, it is possible to provide flexible design
Property, it is very suitable to the limited mobile device in space, current drain 3.6A, so that BME280 sensor is particularly suitable for battery driving
Application.
Further, WiFi module 30 uses EMW3162 wireless communication unit.EMW3162 wireless communication unit passes through string
Port communications mode is communicated with control module 20, and the built-in dominant frequency of the wireless communication unit of EMW3162 model is up to 120MHz
STM32F205RG microcontroller, embed 1M bytes Flash, 128k byte SRAM and Peripheral Interface, Peripheral Interface be as follows:
32 GPIO mouthfuls；2 UART interfaces, one of them is controlled comprising hardware flow；1 SPI/I2S interface；8 ADC are defeated
Enter channel；2 DAC output channels；1 USB OTG interface, 2 CAN interfaces；1 I2C interface；Each GPIO mouthfuls is owned by
PWM input, output and timer I/O channel；SWD debugging interface.
Further, control module 20 selects 32 bands 64k byte flash memory and 20k bytes based on ARM core
The CortexTM-M3 single-chip microcontroller of sram memory.The CortexTM-M3 processor of ARM is the embedded-type ARM processing of latest generation
Device, it for realize needs of MCU provide inexpensive platform, the number of pins of reduction, reduction system power dissipation, provide simultaneously
Brilliant calculated performance and the response of advanced interruption system.The CortexTM-M3 of ARM is 32 risc processors, provides volume
Outer code efficiency, usual 8 and sixteen-bit system memory space on played the high-performance of ARM kernel.It is selected in the present embodiment
CortexTM-M3 model STM32F103C8T6.
As can be seen from the above description, a kind of gas-detecting device provided in an embodiment of the present invention, controls institute by control module
Detection module detection object gas is stated, and the concentration for the object gas that will test is sent to exterior terminal by WiFi module, it is real
Now to the long-range monitoring of target gas levels, with the response time is short, detection limit is low, response range is big and with long service life excellent
Point.
The embodiment of the invention provides a kind of EW systems, referring to Fig. 3, comprising: gas-detecting device 101, terminal
Equipment 102 and electromagnetic valve 103；
The output end of gas-detecting device 101 is connected with the input terminal of terminal device 102, the output of terminal device 102
End is connected with the control terminal of electromagnetic valve 103；
The gas concentration that the gas-detecting device 101 will test through wireless communication is sent to terminal device
102, so that terminal device 102 judges whether the gas concentration is more than pre-set gas concentration；
The terminal device 102 is closed and is arranged in storage cylinder outlet when judging that gas concentration is more than pre-set gas concentration
Electromagnetic valve 103 on mouth simultaneously carries out early warning；
Wherein, gas-detecting device 101 is using the gas-detecting device 101 in above-described embodiment.Terminal device is using meter
Calculation machine or mobile intelligent terminal.
In the specific implementation, the gas concentration hair that detects target gas levels using gas-detecting device 101, and will test
It send to terminal device 102, to realize the long-range monitoring of object gas, wherein terminal device 102 is judging that gas concentration is more than
When pre-set gas concentration, closes the electromagnetic valve 103 being arranged on storage cylinder gas outlet and carry out early warning, simultaneously close off storage cylinder
Electromagnetic valve 103 on gas outlet, realizes the distant early warning of object gas.
Further, further includes: driving device, the driving device pass through air draft system for driving automobile exhaust system
System is exhausted；
The output end of the terminal device is connected with the control terminal of the driving device, and terminal device is sent out to driving device
Instruction is sent, so that driving device driving exhaust system is opened or closed.
When implementing, terminal device is also used to issue control instruction to driving device, controls exhaust system by driving device
Open or close.For exhaust system when opening, be exhausted reduces density of hydrogen in time；Default gas can also be lower than in concentration
When bulk concentration, driving exhaust system is closed, and exhaust system is in closure, without exhaust.
From upper description it is found that a kind of EW system provided in an embodiment of the present invention, can be realized to object gas into
The long-range monitoring of row and early warning, the hydrogen for being suitably applied fuel cell remotely monitor and early warning, with the response time is short, detection limit
The advantages that low, response range is big, long service life.
In specification of the invention, numerous specific details are set forth.Although it is understood that the embodiment of the present invention can
To practice without these specific details.In some instances, well known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this specification.Similarly, it should be understood that disclose in order to simplify the present invention and helps to understand respectively
One or more of a inventive aspect, in the above description of the exemplary embodiment of the present invention, each spy of the invention
Sign is grouped together into a single embodiment, figure, or description thereof sometimes.However, should not be by the method solution of the disclosure
Release is in reflect an intention that i.e. the claimed invention requires more than feature expressly recited in each claim
More features.More precisely, as the following claims reflect, inventive aspect is less than single reality disclosed above
Apply all features of example.Therefore, it then follows thus claims of specific embodiment are expressly incorporated in the specific embodiment,
It is wherein each that the claims themselves are regarded as separate embodiments of the invention.It should be noted that in the absence of conflict, this
The feature in embodiment and embodiment in application can be combined with each other.The invention is not limited to any single aspect,
It is not limited to any single embodiment, is also not limited to any combination and/or displacement of these aspects and/or embodiment.And
And can be used alone each aspect and/or embodiment of the invention or with other one or more aspects and/or its implementation
Example is used in combination.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (10)
1. a kind of gas-detecting device characterized by comprising detection module, WiFi module and control module；
The control module is electrically connected with detection module and WiFi module respectively；
The control module detects object gas by controlling the detection module, and the concentration for the object gas that will test passes through
WiFi module is sent to exterior terminal.
2. gas-detecting device according to claim 1, which is characterized in that the detection module includes: hydrogen detection electricity
Road；
The output end of the hydrogen detection circuit is connected with the input terminal of control module, and the hydrogen detection circuit is by acquisition
Density of hydrogen data are sent to control module.
3. gas-detecting device according to claim 2, which is characterized in that the hydrogen detection circuit, comprising: sensitive group
Part, resistance R1, resistance R2 and resistance R3；
Wherein, sensing assembly, resistance R1, resistance R2 and resistance R3 constitute Wheatstone bridge.
4. gas-detecting device according to claim 3, which is characterized in that pass through nanocatalyst CexMn1-xO2To SnO2
It is surface modified and obtains the sensing assembly.
5. gas-detecting device according to claim 2, which is characterized in that the detection module, further includes: temperature and humidity passes
Sensor；
The output end of the Temperature Humidity Sensor is connected with the input terminal of control module, and the Temperature Humidity Sensor is by acquisition
Data of the Temperature and Humidity module is sent to control module.
6. gas-detecting device according to claim 1, which is characterized in that the WiFi module is wireless using EMW3162
Communication unit.
7. gas-detecting device according to claim 1, which is characterized in that the control module is single-chip microcontroller.
8. a kind of EW system characterized by comprising gas-detecting device, terminal device and electromagnetic valve；
The output end of gas-detecting device is connected with the input terminal of terminal device, the output end of terminal device and electromagnetic valve
Control terminal is connected；
The gas concentration that the gas-detecting device will test through wireless communication is sent to terminal device, so that terminal
Equipment judges whether the gas concentration is more than pre-set gas concentration；
The terminal device closes the electricity being arranged on storage cylinder gas outlet when judging that gas concentration is more than pre-set gas concentration
Magnet valve door simultaneously carries out early warning；
Wherein, gas-detecting device is using gas-detecting device described in any one of claim 1-7.
9. EW system according to claim 8, which is characterized in that further include: driving device, the driving device
For driving automobile exhaust system, it is exhausted by exhaust system；
The output end of the terminal device is connected with the control terminal of the driving device, and terminal device refers to driving device transmission
It enables, so that driving device driving exhaust system is opened or closed.
10. EW system according to claim 8, which is characterized in that the terminal device is computer or movement
Intelligent terminal.
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| CN201910114732.6A CN109709164A (en) | 2019-02-14 | 2019-02-14 | A kind of gas-detecting device and EW system |
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| CN201910114732.6A CN109709164A (en) | 2019-02-14 | 2019-02-14 | A kind of gas-detecting device and EW system |
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Family
ID=66264354
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