CN108645980A - A kind of gas sensor on-line detecting system and method - Google Patents
A kind of gas sensor on-line detecting system and method Download PDFInfo
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- CN108645980A CN108645980A CN201810772963.1A CN201810772963A CN108645980A CN 108645980 A CN108645980 A CN 108645980A CN 201810772963 A CN201810772963 A CN 201810772963A CN 108645980 A CN108645980 A CN 108645980A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/007—Arrangements to check the analyser
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Abstract
The invention discloses a kind of gas sensor on-line detecting system and methods, are related to sensor detecting field, the system comprises：Mobile platform；The first branch is sequentially connected in series the gas cylinder that has powerful connections, first pressure sensor, first manual valve, the first pressure reducing valve, the first solenoid valve and first flowmeter in the first branch；The second branch has been sequentially connected in series calibrating gas bottle, second pressure sensor, the second manually-operated gate, the second pressure reducing valve, second solenoid valve and second flowmeter in the second branch；Third branch, the third branch road have been sequentially connected in series exhaust gas bottle or sorbing material, third manually-operated gate, third solenoid valve；Gas gathering mask；Gas sensor to be detected；Calibrating gas sensor；Control unit；The processing unit for reading the data information and being handled.It is simple to have reached method, without frequently being dismounted, has avoided the reliability of reduction system, improves the technique effect of the reliability of detecting system.
Description
Technical field
The present invention relates to sensor detecting field, more particularly to a kind of gas sensor on-line detecting system and side
Method.
Background technology
With the development of science and technology, various types of gas sensors (such as gas alarm instrument) are in production-operation unit
It is widely used, is mostly used poisonous and harmful, flammable explosive gas the concentration with monitoring results place, ensure production safety.Gas passes
Sensor type is various, and there are service life short (differing for 2 months~2 years), performances to decline serious even mistake with usage time for majority
The problems such as effect, needs its validity of periodic inspection.
But present inventor has found the above-mentioned prior art extremely during technical solution in realizing the embodiment of the present application
It has the following technical problems less：
In the prior art, conventional gas sensor (or alarm etc.) detection method, generally removes sensor,
Laboratory carries out sensor performance detection, and original position is reinstalled after detection.There are following drawbacks for the method：1, sensor by from
Circuit removes, and needs to close by former warning device or with the control device of production linkage.If during this period, Work places go out
Existing unsafe condition, system cannot send out information warning and corresponding operation；2, sensor is removed by the gross, and inspection, the period is long,
The time that production and operation are in unprotect state is longer；3, detection is both needed to the disassembling operations into line sensor, multi-pass operation every time
Later, cause system reliability to decline, be very serious hidden danger for monitoring system；4, the testing process with disadvantage mentioned above and
Expensive testing cost, reduces the enthusiasm that enterprise is detected gas sensor, and detection cycle extends, cannot slap in time
The real-time performance for holding gas sensor causes the reliability of gas monitoring system to reduce.
Invention content
The present invention provides a kind of gas sensor on-line detecting system and methods, to solve the side of detection in the prior art
Method is detected due to needing to remove sensor so that during this period, unsafe condition occur in Work places, and system cannot be sent out
Go out information warning and corresponding operation, and the period is long, the technology for the real-time performance that cannot grasp gas sensor in time is asked
Topic, it is simple to have reached method, without frequently being dismounted, avoids the reliability of reduction system, improves the reliability of detecting system
Technique effect.
On the one hand, the present invention provides a kind of gas sensor on-line detecting system, the system comprises：Mobile platform；
The first branch is sequentially connected in series the gas cylinder that has powerful connections in the first branch, and first manual valve, first pressure sensor, first subtracts
Pressure valve, the first solenoid valve and first flowmeter；The second branch has been sequentially connected in series calibrating gas bottle, second-hand in the second branch
Movable valve, second pressure sensor, the second pressure reducing valve, second solenoid valve and second flowmeter；Third branch, the third branch
On be sequentially connected in series exhaust gas bottle or sorbing material, third manually-operated gate, third solenoid valve, wherein the first branch, second
Road and the third branch are arranged on the mobile platform；Gas gathering mask, the gas gathering mask respectively with the first branch,
Two branches are connected with the third branch, and, there is an accommodating space inside the gas gathering mask；Gas sensor to be detected, institute
Stating gas sensor to be detected has a sampling port, and the sampling port is located in the accommodating space；Calibrating gas passes
Sensor, the calibrating gas sensor are connect with the gas gathering mask；Obtain the gas sensor to be detected and the Standard Gases
The control unit of the data information of body sensor, described control unit respectively with the gas sensor to be detected and the standard
Gas sensor connects；The processing unit for reading the data information and being handled, the processing unit are single with the control
Member connection.
Preferably, the system also includes：Interconnecting module, described interconnecting module one end and the gas sensor to be detected
Connection, the other end are connect with described control unit, wherein the interconnecting module believes the data of the gas sensor to be detected
Breath is sent to described control unit.
Preferably, it is single to be sent to the control by the interconnecting module by the way of wired or wireless for the data information
Member.
Preferably, there is a trepanning, the calibrating gas sensor to pass through the trepanning and the collection on the gas gathering mask
Gas hood connects.
Preferably, the gas gathering mask is connect by screw thread or bayonet arrangement with the gas sensor to be detected.
Preferably, the background gas cylinder is for storing background gas；The calibrating gas bottle is for storing calibrating gas；It is described
Exhaust gas bottle is for collecting exhaust gas；The sorbing material is for adsorbing exhaust gas.
On the other hand, the present invention provides a kind of gas sensor online test method, the method includes：Open control
Unit and processing unit, wherein described control unit is connect with gas sensor to be detected and calibrating gas sensor respectively, institute
It states processing unit to communicate to connect with described control unit, wherein the gas sensor to be detected and calibrating gas sensing
Device is all connected with a gas gathering mask, and the gas gathering mask is connect with the first branch, the second branch and third branch respectively；Gas to be detected is set
The type and control parameter of body sensor；Described control unit reads the data of the calibrating gas sensor in the gas gathering mask
Information；The first solenoid valve for opening the first branch is filled with background gas into the gas gathering mask, and opens described second
The second solenoid valve of road is filled with the gas to be detected into the gas gathering mask, wherein described control unit is according to default dense
Angle value controls the second solenoid valve opening and closing；When the gas concentration value to be detected reaches the default density, institute is closed
State second solenoid valve；Described control unit reads the data of the gas sensor to be detected and calibrating gas sensor；It will be every
After the completion of a preset concentration point detects, described control unit opens the first solenoid valve in the first branch, by the collection
The gas discharge to be detected in gas hood.
Preferably, the control parameter includes gaseous species, test point number and the corresponding concentration value of each data point.
Preferably, described control unit reads the data information of the calibrating gas sensor in the gas gathering mask, also wraps
It includes：When in the gas gathering mask including foreign gas, the first solenoid valve in the first branch is opened, the impurity gas is discharged
Body.
Preferably, described when the gas concentration value to be detected reaches the default density, close second electricity
After magnet valve, further include：5-10s is stood, the gas in the gas gathering mask is made to be evenly distributed.
Said one in the embodiment of the present invention or multiple technical solutions at least have following one or more technology effects
Fruit：
1, in a kind of gas sensor on-line detecting system provided in an embodiment of the present invention, the system comprises：It is mobile flat
Platform；The first branch, is sequentially connected in series the gas cylinder that has powerful connections in the first branch, first manual valve, first pressure sensor, and first
Pressure reducing valve, the first solenoid valve and first flowmeter；The second branch, has been sequentially connected in series calibrating gas bottle in the second branch, and second
Manually-operated gate, second pressure sensor, the second pressure reducing valve, second solenoid valve and second flowmeter；Third branch, the third branch
Road has been sequentially connected in series exhaust gas bottle or sorbing material, third manually-operated gate, third solenoid valve, wherein the first branch, second
Branch and the third branch are arranged on the mobile platform；Gas gathering mask, the gas gathering mask respectively with the first branch,
The second branch is connected with the third branch, and, there is an accommodating space inside the gas gathering mask；Gas sensor to be detected,
The gas sensor to be detected has a sampling port, and the sampling port is located in the accommodating space；Calibrating gas
Sensor, the calibrating gas sensor are connect with the gas gathering mask；Obtain the gas sensor to be detected and the standard
The control unit of the data information of gas sensor, described control unit respectively with the gas sensor to be detected and the mark
Quasi- gas sensor connection；The processing unit for reading the data information and being handled, the processing unit and the control
Unit connects.It solves detection method in the prior art to be detected due to needing to remove sensor so that during this period,
There is unsafe condition in Work places, and system cannot send out information warning and corresponding operation, and the period is long, cannot slap in time
The technical issues of holding the real-time performance of gas sensor, it is simple to have reached method, without frequently being dismounted, avoids reduction system
Reliability, improve the technique effect of the reliability of detecting system.
2, in a kind of gas sensor online test method provided in an embodiment of the present invention, the method includes：Open control
Unit and processing unit processed, wherein described control unit is connect with gas sensor to be detected and calibrating gas sensor respectively,
The processing unit is communicated to connect with described control unit, wherein the gas sensor to be detected and the calibrating gas pass
Sensor is all connected with a gas gathering mask, and the gas gathering mask is connect with the first branch, the second branch and third branch respectively；It is arranged to be detected
The type and control parameter of gas sensor；Described control unit reads the number of the calibrating gas sensor in the gas gathering mask
It is believed that breath；The first solenoid valve for opening the first branch is filled with background gas into the gas gathering mask, and opens described second
The second solenoid valve of branch road is filled with the gas to be detected into the gas gathering mask, wherein described control unit is according to default
Concentration value controls the second solenoid valve opening and closing；When the gas concentration value to be detected reaches the default density, close
The second solenoid valve；Described control unit reads the data of the gas sensor to be detected and calibrating gas sensor；It will
After the completion of each preset concentration point detects, described control unit opens the first solenoid valve in the first branch, will be described
The gas discharge to be detected in gas gathering mask.Solve in the prior art detection method due to need by sensor remove into
Row detection so that during this period, there is unsafe condition in Work places, and system cannot send out information warning and corresponding operation, and
Period is long, the technical issues of cannot grasping the real-time performance of gas sensor in time, and it is simple to have reached method, without frequent
It is dismounted, avoids the reliability of reduction system, improve the technique effect of the reliability of detecting system.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, below the special specific implementation mode for lifting the present invention.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of gas sensor on-line detecting system in the embodiment of the present invention；
Fig. 2 is a kind of flow diagram of gas sensor online test method in the embodiment of the present invention.
Reference sign：1- mobile platforms, 21- background gas cylinders, 22- first manual valves, the first pressure reducing valves of 23-, 24-
First solenoid valve, 25- first flowmeters, 26- first pressure sensors, 31- calibrating gas bottles, the second manually-operated gates of 32-, 33-
Two pressure reducing valves, 34- second solenoid valves, 35- second flowmeters, 36- second pressure sensors, 41- exhaust gas bottle or sorbing material,
42- third manually-operated gates, 43- third solenoid valves, 5- gas gathering masks, 6- gas sensors to be detected, 7- calibrating gas sensors, 8-
Control unit, 9- processing units, 10- interconnecting modules.
Specific implementation mode
An embodiment of the present invention provides a kind of gas sensor on-line detecting system and methods, to solve in the prior art
Detection method is detected due to needing to remove sensor so that during this period, unsafe condition, system occur in Work places
Information warning and corresponding operation cannot be sent out, and the period is long, cannot grasp the real-time performance of gas sensor in time
Technical problem.
Technical solution in the embodiment of the present invention, overall structure are as follows：
The present invention provides a kind of gas sensor on-line detecting system and methods, pass through mobile platform；The first branch, institute
It states and is sequentially connected in series the gas cylinder that has powerful connections in the first branch, first manual valve, first pressure sensor, the first pressure reducing valve, the first electricity
Magnet valve and first flowmeter；The second branch, has been sequentially connected in series calibrating gas bottle in the second branch, the second manually-operated gate, and second
Pressure sensor, the second pressure reducing valve, second solenoid valve and second flowmeter；Third branch, the third branch road are sequentially connected in series
There are exhaust gas bottle or sorbing material, third manually-operated gate, third solenoid valve, wherein the first branch, the second branch and described
Three branches are arranged on the mobile platform；Gas gathering mask, the gas gathering mask respectively with the first branch, the second branch and institute
The connection of third branch is stated, and, there is an accommodating space inside the gas gathering mask；Gas sensor to be detected, the gas to be detected
Body sensor has a sampling port, and the sampling port is located in the accommodating space；Calibrating gas sensor, the mark
Quasi- gas sensor is connect with the gas gathering mask；Obtain the number of the gas sensor to be detected and the calibrating gas sensor
It is believed that the control unit of breath, described control unit connects with the gas sensor to be detected and the calibrating gas sensor respectively
It connects；The processing unit for reading the data information and being handled, the processing unit are connect with described control unit.Reach
Method is simple, without frequently being dismounted, avoids the reliability of reduction system, improves the technology effect of the reliability of detecting system
Fruit.
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, 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
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment one
An embodiment of the present invention provides a kind of gas sensor on-line detecting systems, referring to FIG. 1, the system comprises：
Mobile platform 1；
Specifically, the mobile platform 1 provides the platform for placing detection device, and the mobile platform for the system
1 can be used moving trolley or piggy-back structure, and so as to easy to remove, the system is designed as light and handy integrated form system, can
It is designed to portable construction, is mounted on wheeled flat bogie, may be designed as piggy-back structure.
The first branch is sequentially connected in series the gas cylinder 21 that has powerful connections, first pressure sensor 26, first manual in the first branch
Valve 22, the first pressure reducing valve 23, the first solenoid valve 24 and first flowmeter 25；
The second branch has been sequentially connected in series calibrating gas bottle 31 in the second branch, and second pressure sensor 36, second manually
Valve 32, the second pressure reducing valve 33, second solenoid valve 34 and second flowmeter 35；
Third branch, third branch road have been sequentially connected in series exhaust gas bottle or sorbing material 41, third manually-operated gate 42, the
Three solenoid valves 43, wherein the first branch, the second branch and the third branch are arranged on the mobile platform 1；
Further, the background gas cylinder 21 is for storing background gas；The calibrating gas bottle 31 is for storing Standard Gases
Body；The exhaust gas bottle 41 is for collecting exhaust gas, and the sorbing material 41 is for adsorbing exhaust gas.
Specifically, the gas gathering mask 5 is connected separately with three pipelines, that is, the gas gathering mask 5 respectively with the first branch,
The second branch is connected with third branch, the first branch, and the second branch and third branch are respectively positioned on the mobile platform 1,
Wherein, it is sequentially connected in series the gas cylinder 21 that has powerful connections in the first branch, first pressure sensor 26, first manual valve 22, first
Pressure reducing valve 23, the first solenoid valve 24 and first flowmeter 25；Calibrating gas bottle 31, the second pressure have been sequentially connected in series in the second branch
Force snesor 36, the second manually-operated gate 32, the second pressure reducing valve 33, second solenoid valve 34 and second flowmeter 35；The third branch
Road has been sequentially connected in series exhaust gas bottle or sorbing material 41, third manually-operated gate 42, third solenoid valve 43；Wherein, the background gas
Bottle 21 is for storing high-purity background gas, such as nitrogen；The calibrating gas bottle 31 is for providing calibrating gas；The exhaust gas bottle or absorption
Material 41 is collected or absorption toxic harmful exhaust gas is for subsequent processing；First solenoid valve 24, the second solenoid valve 34 and institute
State release and closing that third solenoid valve 43 automatically controls background gas and calibrating gas for system by software；Described first
Flowmeter 25 and the second flowmeter 35 are used to read the rate of release of background gas and calibrating gas；The first pressure passes
For measuring residual gas pressure in gas cylinder, output signal is sent to the control mould for sensor 31 and second pressure sensor 36
Block reminds user to replace gas cylinder in hypotony.By performance to devices such as solenoid valve, flowmeters and to circuit design
It is required that reducing, the technique effect for saving development and maintenance cost, reducing equipment research and development difficulty, shortening the development cycle is reached.
Gas gathering mask 5, the gas gathering mask 5 are connect with the first branch, the second branch and the third branch respectively, and,
5 inside of the gas gathering mask has an accommodating space；
Further, there is a trepanning, the calibrating gas sensor 7 to pass through the trepanning and institute on the gas gathering mask 5
State the connection of gas gathering mask 5.
Further, the gas gathering mask 5 is connect by screw thread or bayonet arrangement with the gas sensor 6 to be detected.
Specifically, the gas gathering mask 5 is connect with the first branch, the second branch and the third branch respectively, into
One step, the gas gathering mask 5 is also connect with the gas sensor 6 to be detected and the calibrating gas sensor 7 respectively, specifically
, the trepanning on the gas gathering mask 5, and then connected the calibrating gas sensor 7 with the gas gathering mask 5 by the trepanning
It connects；The gas gathering mask 5 is connect by screw thread or bayonet arrangement with the gas sensor 6 to be detected, in other words, passes through screw thread
Or bayonet arrangement so that the gas gathering mask 5 is installed on the gas sample end of the sensor to be detected 6 (or gas alarm instrument)
On the outside of mouthful, it is full of calibrating gas in the gas gathering mask 5, an envelope is provided under test gas sensor and calibrating gas sensor
The space closed makes the two in the identical gaseous environment of concentration.
Gas sensor 6 to be detected, the gas sensor 6 to be detected have a sampling port, and the sampling port
In the accommodating space；
Specifically, the gas sensor to be detected 6 is the sensor for needing to be detected, it is provided with a gas
Sampling port, further, the gas sampling port are located in the accommodating space.
Calibrating gas sensor 7, the calibrating gas sensor 7 are connect with the gas gathering mask 5；
Specifically, the appropriate location trepanning on the gas gathering mask 5, described to can be used to install by the trepanning
Calibrating gas sensor 7 further measures the real-time of 5 internal standard gas of the gas gathering mask by the calibrating gas sensor 7
Concentration.
The control unit 8 of the data information of the gas sensor to be detected 6 and the calibrating gas sensor 7 is obtained,
Described control unit 8 is connect with the gas sensor 6 to be detected and the calibrating gas sensor 7 respectively；
Specifically, described control unit 8 for controlling the execution units such as the solenoid valve of the system, read flowmeter,
The output data of gas sensor etc., that is, described control unit 8 is for obtaining the gas sensor to be detected 6 and the mark
The data information of quasi- gas sensor 7.
The processing unit 9 for reading the data information and being handled, the processing unit 9 connect with described control unit 8
It connects.
Specifically, the processing unit 9 is the terminal installation of the system, notes can be used in described control unit 9
This computer, tablet computer or inserted computer platform, that is to say, that described control unit 9 is operating system control software, is used for
The work of each device in control system, reads the operation data of each unit, and the processing unit 9 is measured using computer based
With control technology, by entire on-line measuring device be designed to can automatic running by setup program system, improve efficiency, simultaneously
ADC chips based on the microprocessors such as microcontroller or ARM and 8bit or 8bit or more resolution ratio, standard gas concentration is controlled,
Calibrating gas sensor output, sensor to be measured output digitlization, precision can be better than 0.5% or even 0.02% (based on 12bit with
Upper ADC), further, according to the data of the calibrating gas sensor 7 and the gas sensor to be detected 6, wait for described
The performance of detection gas sensor 6 is assessed, and assessment result is printed.In the sampling end of the gas sensor 6 to be detected, if
Set the gas gathering mask 5 of a sealing.7 sample tap of calibrating gas sensor and air inlet, exhaust port are set on gas gathering mask 5.Base
The equipment such as solenoid valve are controlled in automatic control technology, background gas (such as nitrogen) and gas to be detected are filled with into gas gathering mask, is made
The mixed gas of setting concentration (approximation) is formed in gas gathering mask.Calibrating gas sensor through calibrating and gas to be detected
The sampling end of sensor is in the gas gathering mask.By comparing the output of calibrating gas sensor and gas sensor to be detected
Value, you can to quantify the performance of gas sensor to be detected.According to the qualified or not rule of setting, it can be assumed that this is to be detected
Whether gas sensor is qualified, provides the suggestion for being continuing with or replacing.
For different types of sensor to be detected, the structure of detection device is substantially general, it is only necessary to change small part and match
Part.For example, according to gaseous species, one or more of the following contents is only replaced：Standard gas bottle, pipeline, solenoid valve, flow
Meter, calibrating gas sensor etc..
Further, the system also includes：Interconnecting module 10,10 one end of the interconnecting module and the gas to be detected
Sensor 6 connects, and the other end connect with described control unit 8, wherein the interconnecting module 10 is by the gas sensing to be detected
The data information of device 6 is sent to described control unit 8.
Further, the data information is sent to the control by the interconnecting module 10 by the way of wired or wireless
Unit 8 processed.
Specifically, 10 one end of the interconnecting module is connect with the gas sensor 6 to be detected, the other end and the control
Unit 8 processed connects, and the interconnecting module 10 is transferred the output data of the gas sensor to be detected 6, and the way of output can be with
Using wired (including but not limited to voltage, electric current, RS232, RS485 etc.) or wireless (include but not limited to WIFI, ZigBee,
Lora, bluetooth, infrared etc.) output data is sent to described control unit 8 by mode.
Embodiment two
An embodiment of the present invention provides a kind of gas sensor online test methods, referring to FIG. 2, the method includes：
Step 110：Open the detecting system, that is, open described control unit 8 and the processing unit 9, wherein institute
It states control unit 8 to connect with gas sensor 6 to be detected and calibrating gas sensor 7 respectively, the processing unit 9 and the control
Unit 8 processed communicates to connect, wherein the gas sensor 6 to be detected and the calibrating gas sensor 7 are all connected with a gas gathering mask
5, the gas gathering mask 5 is connect with the first branch, the second branch and third branch respectively；
Specifically, opening control unit and processing unit, the hand of the background gas cylinder and the standard gas bottle is then opened
Movable valve, wherein described control unit 8 respectively with gas sensor 6 to be detected, calibrating gas sensor 7, the processing unit
9 connection, wherein the gas gathering mask 5 respectively with the first branch, the second branch, third branch, gas sensor to be detected 6 and mark
Quasi- gas sensor 7 connects, specifically, the first branch, the second branch and third branch are respectively positioned on the mobile platform 1
On, wherein it is sequentially connected in series the gas cylinder 21 that has powerful connections in the first branch, first manual valve 22, first pressure sensor 26,
One pressure reducing valve 23, the first solenoid valve 24 and first flowmeter 25；It has been sequentially connected in series calibrating gas bottle 31 in the second branch, second
Manually-operated gate 32, second pressure sensor 36, the second pressure reducing valve 33, second solenoid valve 34 and second flowmeter 35；The third
Branch road has been sequentially connected in series exhaust gas bottle or sorbing material 41, third manually-operated gate 42, third solenoid valve 43.
Step 120：The type and control parameter of gas sensor to be detected are set；
Further, the control parameter includes gaseous species, test point number and the corresponding concentration value of each data point.
Specifically, 6 type of under test gas sensor and control parameter etc. is arranged, so as to restore to shut down automatically
When setting or read configuration file any time before.Detection process can also be configured according to actual needs simultaneously
Link and control parameter, wherein the control parameter includes but not limited to：Gaseous species, test point number, each data point
Concentration value etc..It only needs that basic parameter is arranged in entire detection process, is executed automatically based on automated software, reduce artificial ginseng
With.
Step 130：Described control unit 8 reads the data information of the calibrating gas sensor 7 in the gas gathering mask 5；
Further, described control unit 8 reads the data information of the calibrating gas sensor 7 in the gas gathering mask 5,
Further include：When in the gas gathering mask 5 including foreign gas, the first solenoid valve 24 in the first branch is opened, institute is discharged
State foreign gas.
Specifically, described control unit 8 is used to read the data of the calibrating gas sensor 7 in the gas gathering mask 5,
If there is other gases, then background gas solenoid valve is opened, that is to say, that when in the gas gathering mask 5 including foreign gas, open
Gas in the gas gathering mask 5 is discharged the first solenoid valve 24 in the first branch, is allowed to be full of background gas.
Step 140：The first solenoid valve for opening the first branch is filled with background gas into the gas gathering mask, and opens
Second solenoid valve 34 in the second branch is filled with the gas to be detected into the gas gathering mask 5, wherein the control
Unit 8 controls the second solenoid valve according to the default density and is opened and closed.
Specifically, the first solenoid valve for opening the first branch is filled with background gas and second into the gas gathering mask
The second solenoid valve 34 of branch road, that is, it is filled with background gas into the gas gathering mask, while opening the calibrating gas solenoid valve,
Gas to be detected is slowly filled with into the gas gathering mask 5.Then, described control unit 8 presses first concentration value of setting, according to
The cumulative data of the second flowmeter controls the shut-in time of the second solenoid valve 34.
Step 150：When the gas concentration value to be detected reaches the default density, second electromagnetism is closed
Valve；
Further, described when the gas concentration value to be detected reaches the default density, close described second
After solenoid valve, further include：5-10s is stood, the gas in the gas gathering mask is made to be evenly distributed.
Specifically, after the gas concentration value to be detected reaches first concentration value, described control unit 8 closes institute
Calibrating gas solenoid valve is stated, 5-10s or so is stood, gas in the gas gathering mask 5 is waited for be uniformly distributed.
Step 160：Described control unit 8 reads the number of the gas sensor to be detected 6 and calibrating gas sensor 7
According to；
Specifically, described control unit 8 reads the calibrating gas sensor 7 and the under test gas sensor 6
Data, and record.
Step 170：After the completion of each preset concentration point is detected, described control unit 8 is opened in the first branch
The first solenoid valve, the gas to be detected in the gas gathering mask is discharged
Specifically, 8 opens solenoid valve of described control unit, into the testing process of follow-up concentration point to be measured.When all
After the completion of preset concentration point testing process, described control unit 8 opens the first solenoid valve in the first branch, that is, opens the back of the body
Under test gas in the gas gathering mask 5 is discharged prosperous solenoid valve, if at this point, there are toxic and harmful gas, discharge gas is received
Collect into exhaust gas bottle, or adsorbed by sorbing material, for subsequent processing, be then shut off solenoid valve, preserves detection data, it is all to be detected
After sensor detects, the manually-operated gate of background gas cylinder and standard gas bottle is closed, each gas sensor to be detected is ultimately generated
Performance report and assessment report.
In embodiments of the present invention, when detecting a certain sensor, other sensors can still play monitoring effect, and system is whole
The impacted very little of monitoring function；Detection process does not dismount sensor, avoids the reliability of reduction system；Simple and practicable
On-line checking flow and lower testing cost, can improve the frequency of enterprise's detection gas sensor, grasp gas in time and pass
The behavior pattern of sensor further increases the technique effect of the reliability of detecting system.
Said one in the embodiment of the present invention or multiple technical solutions at least have following one or more technology effects
Fruit：
1, in a kind of gas sensor on-line detecting system provided in an embodiment of the present invention, the system comprises：It is mobile flat
Platform；The first branch, is sequentially connected in series the gas cylinder that has powerful connections in the first branch, first manual valve, first pressure sensor, and first
Pressure reducing valve, the first solenoid valve and first flowmeter；The second branch, has been sequentially connected in series calibrating gas bottle in the second branch, and second
Manually-operated gate, second pressure sensor, the second pressure reducing valve, second solenoid valve and second flowmeter；Third branch, the third branch
Road has been sequentially connected in series exhaust gas bottle or sorbing material, third manually-operated gate, third solenoid valve, wherein the first branch, second
Branch and the third branch are arranged on the mobile platform；Gas gathering mask, the gas gathering mask respectively with the first branch,
The second branch is connected with the third branch, and, there is an accommodating space inside the gas gathering mask；Gas sensor to be detected,
The gas sensor to be detected has a sampling port, and the sampling port is located in the accommodating space；Calibrating gas
Sensor, the calibrating gas sensor are connect with the gas gathering mask；Obtain the gas sensor to be detected and the standard
The control unit of the data information of gas sensor, described control unit respectively with the gas sensor to be detected and the mark
Quasi- gas sensor connection；The processing unit for reading the data information and being handled, the processing unit and the control
Unit connects.It solves detection method in the prior art to be detected due to needing to remove sensor so that during this period,
There is unsafe condition in Work places, and system cannot send out information warning and corresponding operation, and the period is long, cannot slap in time
The technical issues of holding the real-time performance of gas sensor, it is simple to have reached method, without frequently being dismounted, avoids reduction system
Reliability, improve the technique effect of the reliability of detecting system.
2, in a kind of gas sensor online test method provided in an embodiment of the present invention, the method includes：Open control
Unit and processing unit processed, wherein described control unit is connect with gas sensor to be detected and calibrating gas sensor respectively,
The processing unit is communicated to connect with described control unit, wherein the gas sensor to be detected and the calibrating gas pass
Sensor is all connected with a gas gathering mask, and the gas gathering mask is connect with the first branch, the second branch and third branch respectively；It is arranged to be detected
The type and control parameter of gas sensor；Described control unit reads the number of the calibrating gas sensor in the gas gathering mask
It is believed that breath；The first solenoid valve for opening the first branch is filled with background gas into the gas gathering mask, and opens described second
The second solenoid valve of branch road is filled with the gas to be detected into the gas gathering mask, wherein described control unit is according to default
Concentration value controls the second solenoid valve opening and closing；When the gas concentration value to be detected reaches the default density, close
The second solenoid valve；Described control unit reads the data of the gas sensor to be detected and calibrating gas sensor；It will
After the completion of each preset concentration point detects, described control unit opens the first solenoid valve in the first branch, will be described
The gas discharge to be detected in gas gathering mask.Solve in the prior art detection method due to need by sensor remove into
Row detection so that during this period, there is unsafe condition in Work places, and system cannot send out information warning and corresponding operation, and
Period is long, the technical issues of cannot grasping the real-time performance of gas sensor in time, and it is simple to have reached method, without frequent
It is dismounted, avoids the reliability of reduction system, improve the technique effect of the reliability of detecting system.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications can be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, those skilled in the art can carry out the embodiment of the present invention various modification and variations without departing from this hair
The spirit and scope of bright embodiment.In this way, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention
And its within the scope of equivalent technologies, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of gas sensor on-line detecting system, which is characterized in that the system comprises：
Mobile platform；
The first branch, is sequentially connected in series the gas cylinder that has powerful connections in the first branch, first manual valve, first pressure sensor, and
One pressure reducing valve, the first solenoid valve and first flowmeter；
The second branch, has been sequentially connected in series calibrating gas bottle in the second branch, the second manually-operated gate, second pressure sensor, and
Two pressure reducing valves, second solenoid valve and second flowmeter；
Third branch, the third branch road have been sequentially connected in series exhaust gas bottle or sorbing material, third manually-operated gate, third electromagnetism
Valve, wherein the first branch, the second branch and the third branch are arranged on the mobile platform；
Gas gathering mask, the gas gathering mask are connect with the first branch, the second branch and the third branch respectively, and, the collection
There is an accommodating space inside gas hood；
Gas sensor to be detected, the gas sensor to be detected has a sampling port, and the sampling port is located at institute
It states in accommodating space；
Calibrating gas sensor, the calibrating gas sensor are connect with the gas gathering mask；
Obtain the control unit of the data information of the gas sensor to be detected and the calibrating gas sensor, the control
Unit is connect with the gas sensor to be detected and the calibrating gas sensor respectively；
The processing unit for reading the data information and being handled, the processing unit are connect with described control unit.
2. the system as claimed in claim 1, which is characterized in that the system also includes：
Interconnecting module, described interconnecting module one end are connect with the gas sensor to be detected, the other end and described control unit
Connection, wherein the data information of the gas sensor to be detected is sent to described control unit by the interconnecting module.
3. system as claimed in claim 2, which is characterized in that the interconnecting module will be described by the way of wired or wireless
Data information is sent to described control unit.
4. the system as claimed in claim 1, which is characterized in that have a trepanning, the calibrating gas to pass on the gas gathering mask
Sensor is connect by the trepanning with the gas gathering mask.
5. the system as claimed in claim 1, which is characterized in that the gas gathering mask by screw thread or bayonet arrangement with it is described to be checked
Survey gas sensor connection.
6. the system as claimed in claim 1, which is characterized in that the background gas cylinder is for storing background gas；
The calibrating gas bottle is for storing calibrating gas；
The exhaust gas bottle is for collecting exhaust gas；
The sorbing material is for adsorbing exhaust gas.
7. a kind of gas sensor online test method, which is characterized in that the method includes：
Open control unit and processing unit, wherein described control unit respectively with gas sensor to be detected and calibrating gas
Sensor connects, and the processing unit and described control unit communicate to connect, wherein the gas sensor to be detected and described
Calibrating gas sensor is all connected with a gas gathering mask, and the gas gathering mask is connect with the first branch, the second branch and third branch respectively；
The type and control parameter of gas sensor to be detected are set；
Described control unit reads the data information of the calibrating gas sensor in the gas gathering mask；
The first solenoid valve for opening the first branch is filled with background gas into the gas gathering mask, and opens the second branch
On second solenoid valve, the gas to be detected is filled with into the gas gathering mask, wherein described control unit is according to preset concentration
Value controls the second solenoid valve opening and closing；
When the gas concentration value to be detected reaches the default density, the second solenoid valve is closed；
Described control unit reads the data of the gas sensor to be detected and calibrating gas sensor；
After the completion of each preset concentration point is detected, described control unit opens the first solenoid valve in the first branch,
By the gas discharge to be detected in the gas gathering mask.
8. the method for claim 7, which is characterized in that the control parameter include gaseous species, test point number and
The corresponding concentration value of each data point.
9. the method for claim 7, which is characterized in that described control unit reads the Standard Gases in the gas gathering mask
The data information of body sensor further includes：
When in the gas gathering mask including foreign gas, the first solenoid valve in the first branch is opened, the impurity is discharged
Gas.
10. the method for claim 7, which is characterized in that described when the gas concentration value to be detected reaches described pre-
If when concentration value, closing after the second solenoid valve, further including：
5-10s is stood, the gas in the gas gathering mask is made to be evenly distributed.
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