CN113109510A - Calibration device for gas sensor - Google Patents
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- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- 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
- G01N33/0072—Arrangements to check the analyser by generating a test gas
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Abstract
The invention provides a calibration device for a gas sensor, which relates to the technical field of gas sensor testing and comprises a gas sensor module, a calibration mechanism and a gas shunting mechanism; the calibration mechanism is provided with a plurality of calibration bases and is used for electrifying the gas sensor modules in the calibration bases, the gas distribution mechanism is provided with a plurality of gas calibration components corresponding to the calibration bases, the gas calibration components are used for conveying gas with standard concentration to the corresponding gas sensor modules, the plurality of gas sensor modules can be aged and calibrated through the plurality of calibration bases, the efficiency of equipment calibration is improved, batch aging is realized, the calibrated sensor modules can be directly replaced with one another, the complexity of equipment maintenance is reduced, the low efficiency of the calibration process in the prior art is relieved, and the replacement needs to be recalibrated, the maintenance difficulty is increased, the aging operation of the single gas sensor is realized, and the production cost is increased.
Description
Technical Field
The invention relates to the technical field of gas sensor testing, in particular to a calibration device for a gas sensor.
Background
A gas sensor is a transducer that converts a volume fraction of a certain gas into a corresponding electrical signal, which is used to detect the content of a certain gas component in the air. Compared with the air quality detection instrument adopting the traditional analysis method, the gas sensor has the advantages of high response speed, low cost, miniaturized volume and the like, and has great development potential in the air quality monitoring application which urgently needs high-density distribution.
In the prior art, due to individual differences of gas sensors, after the assembly of the instrument is completed, the accuracy of the instrument needs to be calibrated and calibrated, and the sensor needs to be subjected to an aging test so as to ensure the accuracy of product measurement; in the traditional calibration and calibration process, after the measuring instrument is assembled, each device is calibrated and calibrated in sequence, so that the efficiency of the calibration process is low; moreover, due to the difference of the sensors, when the instrument sensor is damaged and needs to be replaced, the instrument needs to be calibrated again, so that the maintenance difficulty is increased; the aging of the sensor also needs to electrify the instrument to keep the instrument continuously and normally working, and the aging scheme can occupy a large amount of working area and phase change increases the production cost.
Disclosure of Invention
The invention aims to provide a calibration device for gas sensors, which aims to solve the technical problems that in the prior art, each gas sensor is individually calibrated and calibrated in sequence, the efficiency of the calibration process is low, replacement is required to be calibrated again, the maintenance difficulty is increased, and the production cost is increased due to aging operation of the individual gas sensors.
The invention provides a calibration device for a gas sensor, which comprises: the gas sensor comprises a gas sensor module, a calibration mechanism and a gas distribution mechanism;
the calibration mechanism is provided with a plurality of calibration bases, the gas sensor module is accommodated in the calibration bases, and the calibration mechanism is used for electrifying the gas sensor module in the calibration bases so as to carry out aging operation on the gas sensor module;
the gas diversion mechanism is provided with a plurality of gas marking assemblies corresponding to the calibration base, each gas marking assembly corresponds to one calibration base, the gas marking assemblies are connected with the gas sensor modules on the calibration bases, and the gas marking assemblies are used for conveying gas with standard concentration to the corresponding gas sensor modules so as to calibrate the gas sensor modules.
In a preferred embodiment of the present invention, the gas sensor module includes a gas sensor main body, a stationary housing, and a parameter storage part;
the gas sensor main body and the parameter storage part are both contained in the fixed shell, the parameter storage part is located at the end of the fixed shell, the parameter storage part is electrically connected with the gas sensor main body, the parameter storage part is used for being connected with an electric signal in the calibration base, and the parameter storage part is used for storing the parameters of the gas sensor main body for receiving the standard concentration gas calibrated and calibrated.
In a preferred embodiment of the present invention, the calibration mechanism further comprises a calibration main body and a control mechanism;
the calibration bases are arranged at equal intervals along the surface of the calibration main body, the control mechanism is arranged on the calibration main body, and the control mechanism is in electric signal connection with each calibration base.
In a preferred embodiment of the invention, the flow dividing mechanism comprises a gas flow divider and a gas calibration assembly;
the gas flow divider is located on one side of the calibration main body and connected with the calibration main body, a plurality of first gas outlets are formed in the gas flow divider, each first gas outlet corresponds to one group of gas calibration assemblies, the gas flow divider is connected with the gas calibration assemblies through the first gas outlets, each group of gas calibration assemblies comprises a plurality of gas calibration assemblies, the plurality of gas calibration assemblies are sequentially connected in series, and the plurality of gas calibration assemblies sequentially receive standard concentration gas output by the gas flow divider.
In a preferred embodiment of the invention, the gas marking assembly comprises a gas marking cover and a cascade gas pipe;
mark gas cover is provided with first air inlet, second gas outlet and third gas outlet, mark gas cover covers and locates fixed casing's outside, just mark gas cover with fixed casing is kept away from the one end sealing connection of parameter storage portion, the second gas outlet of mark gas cover runs through fixed casing with gas sensor main part intercommunication, arbitrary adjacent two mark gas cover passes through cascade trachea is connected, cascade tracheal both ends respectively with one mark gas cover's third gas outlet and adjacent another mark gas cover's first air inlet is connected.
In a preferred embodiment of the present invention, the gas splitter comprises a gas splitting body, a gas pipe joint and a gas outlet hose;
a plurality of first gas outlet along the extended surface of gas reposition of redundant personnel main part evenly sets up, the quantity of air pipe joint with the quantity one-to-one of first gas outlet, every the air pipe joint with correspond first gas outlet is connected, give vent to anger the hose with the air pipe joint is kept away from the one end of first gas outlet is connected, gas reposition of redundant personnel main part passes through the hose of giving vent to anger with the first air inlet of mark gas cover is connected.
In a preferred embodiment of the present invention, the flow dividing mechanism further comprises an electromagnetic valve;
the gas reposition of redundant personnel main part is provided with the second air inlet, the solenoid valve with the second air inlet of gas reposition of redundant personnel main part is connected, the solenoid valve is used for being connected with outside standard concentration air supply, the solenoid valve is used for controlling outside standard concentration air supply to the opening and close of the gaseous standard concentration of transport of gas reposition of redundant personnel main part.
In a preferred embodiment of the present invention, the calibration mechanism further comprises a control end and a display end;
the control end and the display end are respectively in electrical signal connection with the control mechanism, the control mechanism is in electrical signal connection with the electromagnetic valve, the control end correspondingly controls the power-on opening and closing of any one of the calibration bases and the opening and closing of the electromagnetic valve through the control mechanism, and the display end is used for displaying state information of the gas sensor module in each calibration base.
In the preferred embodiment of the invention, the device further comprises a communication mechanism;
the communication mechanism is positioned in the calibration main body and is in electric signal connection with the control mechanism, the communication mechanism is used for receiving a control signal of external control equipment and transmitting the control signal to the control mechanism, and the control mechanism correspondingly controls the state of the gas sensor module in each calibration base.
In a preferred embodiment of the invention, the communication mechanism comprises a receiver and a wireless transmitter;
the receiver is in electric signal connection with the control mechanism and the wireless transmitter respectively, the receiver and the wireless transmitter are in electric signal connection with an external mobile terminal respectively, the external mobile terminal sends a control signal to the control mechanism through the receiver, the wireless transmitter is in electric signal connection with the control mechanism, and the control mechanism transmits the state information of the gas sensor module in each calibration base to the external mobile terminal through the wireless transmitter.
The invention provides a calibration device for a gas sensor, which comprises: the gas sensor comprises a gas sensor module, a calibration mechanism and a gas distribution mechanism; the calibration mechanism is provided with a plurality of calibration bases, the gas sensor modules are accommodated in the calibration bases, the calibration mechanism is used for electrifying the gas sensor modules in the calibration bases, the gas distribution mechanism is provided with a plurality of standard gas components corresponding to the calibration bases, each standard gas component corresponds to one calibration base, the standard gas components are connected with the gas sensor modules on the calibration bases and are used for conveying gas with standard concentration to the corresponding gas sensor modules so as to calibrate the gas sensor modules, the aging operation and the calibration operation can be carried out on the plurality of gas sensor modules through the plurality of calibration bases, the efficiency of equipment calibration is improved, the occupied working area is reduced, the batch aging is realized, the calibrated sensor modules can be directly replaced with each other, the standard gas process of equipment maintenance is omitted, and the complexity of equipment maintenance is reduced, the technical problems that in the prior art, each gas sensor is individually calibrated and calibrated in sequence, the calibration process is low in efficiency, replacement is required to be performed again, the maintenance difficulty is increased, and the production cost is increased due to aging operation of the individual gas sensor are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic overall structural diagram of a calibration apparatus for a gas sensor according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a gas sensor module of a calibration apparatus for a gas sensor according to an embodiment of the present invention;
fig. 3 is an exploded view of a gas sensor module of a calibration apparatus for a gas sensor according to an embodiment of the present invention;
fig. 4 is a block diagram of a signal control of a calibration apparatus for a gas sensor according to an embodiment of the present invention.
Icon: 100-a gas sensor module; 101-a gas sensor body; 102-a stationary housing; 103-a parameter storage; 200-a calibration mechanism; 201-calibrating a main body; 202-calibrating a base; 203-a control mechanism; 204-a control terminal; 205-display end; 300-a gas diversion mechanism; 301-gas splitter; 311-gas distribution body; 321-a gas pipe joint; 331-an air outlet hose; 302-a gas calibration assembly; 303-an electromagnetic valve; 312-standard gas hood; 322-cascade trachea; 400-a communication mechanism; 500-mobile terminal.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the present embodiment provides a calibration apparatus for a gas sensor, including: the gas sensor module 100, the calibration mechanism 200 and the gas diversion mechanism 300; the calibration mechanism 200 is provided with a plurality of calibration bases 202, the gas sensor module 100 is accommodated in the calibration bases 202, and the calibration mechanism 200 is used for electrifying the gas sensor module 100 in the calibration bases 202 so as to age the gas sensor module 100; the gas diversion mechanism 300 is provided with a plurality of gas marking components corresponding to the calibration base 202, each gas marking component corresponds to one calibration base 202, the gas marking components are connected with the gas sensor module 100 on the calibration base 202, and the gas marking components are used for conveying gas with standard concentration to the corresponding gas sensor module 100 so as to calibrate the gas sensor module 100.
It should be noted that, in the calibration process of the gas sensor, a certain concentration of standard gas is used, and the measured value of the device is made to conform to the value of the standard gas by adjusting the parameters of the gas sensor, and since the gas sensor does not have a parameter storage function, the parameters need to be stored in a storage chip of an instrument control circuit in the calibration process; according to the calibration device for the gas sensor provided by the embodiment, by manufacturing the independent calibration mechanism 200, when the gas sensor modules 100 need to be calibrated, the plurality of gas sensor modules 100 can be simultaneously accommodated in the plurality of calibration bases 202, and at this time, the gas diversion mechanism 300 can simultaneously convey standard gas with specific concentration to the plurality of gas sensor modules 100, so that the plurality of gas sensor modules 100 can be calibrated at one time, and meanwhile, the parameter storage part 103 is arranged in each gas sensor module 100, so that the steps of calibrating and calibrating the device can be simplified; and because a plurality of gas sensor modules 100 hold in a plurality of calibration base 202 at the same time, can realize once only carrying on the circular telegram to a plurality of gas sensor modules 100 through the calibration mechanism 200, the operation of having realized synchronous ageing, have improved production efficiency, because the parameter storage part 103 of every gas sensor module 100 has stored the calibration information, and then can change directly between a plurality of gas sensor modules 100, has saved the gas marking process of equipment maintenance, has reduced the equipment maintenance complexity.
The calibration device for the gas sensor provided by the embodiment comprises: the gas sensor module 100, the calibration mechanism 200 and the gas diversion mechanism 300; the calibration mechanism 200 is provided with a plurality of calibration bases 202, the gas sensor modules 100 are accommodated in the calibration bases 202, the calibration mechanism 200 is used for electrifying the gas sensor modules 100 in the calibration bases 202, the gas diversion mechanism 300 is provided with a plurality of calibration components corresponding to the calibration bases 202, each calibration component corresponds to one calibration base 202 and is connected with the gas sensor module 100 on the calibration base 202, the calibration components are used for conveying gas with standard concentration to the corresponding gas sensor module 100 so as to calibrate the gas sensor module 100, the plurality of calibration bases 202 can be used for carrying out aging operation and calibration operation on the plurality of gas sensor modules 100, the efficiency of equipment calibration is improved, the occupied working area is reduced, batch aging is realized, the calibrated sensor modules can be directly replaced with each other, and the calibration process of equipment maintenance is omitted, the equipment maintenance complexity is reduced, the technical problems that in the prior art, each gas sensor is individually calibrated and calibrated in sequence, the calibration process is low in efficiency, replacement is required to be calibrated again, the maintenance difficulty is increased, and the production cost is increased due to aging operation of the individual gas sensor are solved.
On the basis of the above embodiment, further, in a preferred embodiment of the present invention, the gas sensor module 100 includes a gas sensor main body 101, a fixed housing 102, and a parameter storage portion 103; the gas sensor main body 101 and the parameter storage part 103 are accommodated in the fixed housing 102, the parameter storage part 103 is located at an end of the fixed housing 102, the parameter storage part 103 is electrically connected with the gas sensor main body 101, the parameter storage part 103 is used for being electrically connected with the calibration base 202, and the parameter storage part 103 is used for storing a parameter of the gas sensor main body 101 for receiving the standard concentration gas calibrated and calibrated.
Wherein the gas sensor body 101 is a transducer that converts a certain gas volume fraction into a corresponding electrical signal; the probe conditions the gas sample through the gas sensor body 101, typically including filtering out impurities and interfering gases, drying or refrigeration processing the instrument display.
In this embodiment, the fixed housing 102 may adopt a cylindrical structure with two open ends, wherein the inlet end of the gas sensor main body 101 is communicated with one end of the fixed housing 102, and the gas diversion mechanism 300 can pass through the end of the fixed housing 102 to be communicated with the inside of the gas sensor main body 101, so as to deliver a certain concentration of standard gas to the gas sensor main body 101; in addition, the parameter storage part 103 is located at the other end of the fixed shell 102, the parameter storage part 103 can store the parameters of the gas sensor main body 101 for receiving the standard concentration gas to be calibrated, and further can relieve the problem that the parameters need to be stored in a storage chip of an instrument control circuit in the calibration and calibration process because the gas sensor does not have the parameter storage function, so that each gas sensor module 100 becomes an independent packaging structure, each gas sensor module 100 can realize the function of the gas sensor main body 101 and can also finish the independent parameter calibration and calibration process; in addition, the fixed case 102 can provide case protection for the gas sensor main body 101 and the parameter storage portion 103, and can ensure the service life of the gas sensor main body 101 and the parameter storage portion 103.
In the preferred embodiment of the present invention, the calibration mechanism 200 further comprises a calibration body 201 and a control mechanism 203; the calibration bases 202 are arranged at equal intervals along the surface of the calibration body 201, the control mechanism 203 is arranged on the calibration body 201, and the control mechanism 203 is in electrical signal connection with each calibration base 202.
In this embodiment, the calibration main body 201 may have a rectangular structure, wherein the calibration bases 202 may be arranged at equal intervals along the longitudinal and transverse directions of the calibration main body 201, so that the calibration bases 202 may be arranged on the surface of the calibration main body 201 in an equal matrix, the control mechanism 203 may be arranged on one side of the calibration main body 201, or may be arranged inside the calibration main body 201, and the control mechanism 203 may control each calibration base 202 to be energized.
Alternatively, the calibration bases 202 may adopt a circular groove structure, and each calibration base 202 is matched with the fixed housing 102 of the gas sensor module 100, so that each fixed housing 102 can be inserted inside the calibration base 202.
Alternatively, the control mechanism 203 may be of various types, for example: MCU, computer, PLC controller, etc., preferably, the control mechanism 203 is an MCU. A Micro Control Unit (MCU), also called a single-chip microcomputer or a single-chip microcomputer, is a computer that properly reduces the frequency and specification of a central processing Unit, and integrates peripheral interfaces such as a memory, a counter, a USB, an a/D conversion, a UART, a PLC, a DMA, and the like, even an LCD driving circuit, on a single chip to form a chip-level computer, which is used for different combined control in different application occasions.
Preferably, the control mechanism 203 may adopt an STM32F103C8T6 single chip microcomputer, and the control mechanism 203 may also adopt PLC control, which is not described herein again.
In the preferred embodiment of the present invention, the flow dividing mechanism comprises a gas flow divider 301 and a gas calibration assembly 302; gas shunt 301 is located one side of maring main part 201, and gas shunt 301 is connected with mark main part 201, be provided with a plurality of first gas outlets on the gas shunt 301, every first gas outlet corresponds a set of gaseous subassembly 302 of maring, gas shunt 301 is connected with gaseous subassembly 302 through first gas outlet, every gaseous subassembly 302 of maring of group is including a plurality of gas components of maring, a plurality of gas components of maring establish ties in proper order, a plurality of gas components of maring receive the standard concentration gas of gas shunt 301 output in proper order.
In this embodiment, the gas splitter 301 can be disposed along one side of the calibration body 201, and the number of the first gas outlets of the gas splitter 301 corresponds to the number of the calibration bases 202 disposed longitudinally, that is, each first gas outlet corresponds to one set of the calibration bases 202, the gas splitter 301 has one gas inlet, the gas splitter 301 receives a certain concentration of standard gas through the gas inlet and respectively delivers the standard gas to the corresponding gas calibration assemblies 302 through the plurality of first gas outlets, and the gas calibration assemblies 302 can be hermetically connected to the gas sensor modules 100 in each calibration base 202, so as to deliver the standard gas with a certain concentration to the gas sensor modules 100 in each calibration base 202, thereby implementing a calibration operation on each gas sensor module 100 synchronously.
In the preferred embodiment of the present invention, the gas marker assembly includes a gas marker shield 312 and a cascade gas tube 322; the gas marking cover 312 is provided with a first gas inlet, a second gas outlet and a third gas outlet, the gas marking cover 312 covers the outside of the fixed shell 102, the end, far away from the parameter storage part 103, of the gas marking cover 312 and the fixed shell 102 is hermetically connected, the second gas outlet of the gas marking cover 312 penetrates through the fixed shell 102 and is communicated with the gas sensor main body 101, any two adjacent gas marking covers 312 are connected through the cascade gas pipe 322, and two ends of the cascade gas pipe 322 are respectively connected with the third gas outlet of one gas marking cover 312 and the first gas inlet of the other adjacent gas marking cover 312.
In this embodiment, the standard gas cover 312 can cover the outside of the fixed housing 102, and the standard gas cover 312 can be connected to the gas sensor main body 101 inside the fixed housing 102 in a sealing manner, the standard gas cover 312 can convey the standard gas with a specific concentration to the gas sensor main body 101 through the second gas outlet, meanwhile, the standard gas cover 312 serves as a main body for calibrating and transporting the gas, the standard gas cover 312 can be connected to the cascade gas pipe 322 through the first gas inlet to receive the standard gas conveyed by the gas splitter 301, and meanwhile, the standard gas cover 312 can also be connected to the standard gas cover 312 of the next stage through the third gas outlet and the cascade gas to convey the standard gas, it should be noted that the standard gas cover 312 located far away from the gas splitter 301 can seal and seal the third gas outlet, so that the standard gas cover 312 can be ensured to convey the standard gas to a plurality of gas sensor main bodies 101 in a group.
In the preferred embodiment of the present invention, the gas splitter 301 comprises a gas splitting body 311, a gas pipe connector 321 and a gas outlet hose 331; a plurality of first gas outlets evenly set up along the extended surface of gas reposition of redundant personnel main part 311, the quantity of air pipe connector 321 and the quantity one-to-one of first gas outlet, every air pipe connector 321 is connected with the first gas outlet that corresponds, the one end that first gas outlet was kept away from with air pipe connector 321 to the hose 331 of giving vent to anger is connected, and gas reposition of redundant personnel main part 311 is connected with the first air inlet of mark gas cover 312 through the hose 331 of giving vent to anger.
In this embodiment, the gas diversion main body 311 serves as a receiving structure of a standard concentration gas source, the gas diversion main body 311 can divert and convey standard gas with a specific concentration uniformly through a plurality of first gas outlets, and meanwhile, in order to ensure the sealing connection between the standard gas cover 312 and the gas diversion main body 311, each first gas outlet of the gas diversion main body 311 can be in sealing connection with the gas pipe connector 321, and the gas pipe connector 321 can be in sealing connection through the gas outlet hose 331, the gas hose is in sealing connection with the standard gas cover 312 located close to the gas diversion main body 311, the gas hose can ensure the freedom degree of the plurality of standard gas covers 312, and thereby each standard gas cover 312 can be in sealing connection with the gas sensor module 100 in each calibration base 202 better corresponding thereto.
In the preferred embodiment of the present invention, the flow dividing mechanism further comprises an electromagnetic valve 303; the gas shunting main body 311 is provided with a second gas inlet, the electromagnetic valve 303 is connected with the second gas inlet of the gas shunting main body 311, the electromagnetic valve 303 is used for being connected with an external standard concentration gas source, and the electromagnetic valve 303 is used for controlling the on-off of the external standard concentration gas source for conveying the standard concentration gas to the gas shunting main body 311.
In this embodiment, the electromagnetic valve 303 is used as a control valve for controlling the gas diversion main body 311, and when the standard gas is required to be delivered to the gas diversion main body 311, the electromagnetic valve 303 can be mechanically controlled to be opened, or the electromagnetic valve 303 can be electrically connected with the control mechanism 203, the control mechanism 203 is used for controlling the opening of the electromagnetic valve 303, so that an external gas source with standard concentration can be delivered into the gas diversion main body 311.
In the preferred embodiment of the present invention, the calibration mechanism 200 further comprises a control end 204 and a display end 205; the control end 204 and the display end 205 are respectively in electrical signal connection with the control mechanism 203, the control mechanism 203 is in electrical signal connection with the electromagnetic valve 303, the control end 204 correspondingly controls the power-on opening and closing of any one of the calibration bases 202 and the opening and closing of the electromagnetic valve 303 through the control mechanism 203, and the display end 205 is used for displaying the state information of the gas sensor module 100 in each calibration base 202.
In this embodiment, the control end 204 may be controlled by a key or a touch screen, preferably, the control end 204 is controlled by a key, and the key is electrically connected to the control mechanism, so that the aging operation can be performed on the gas sensor module 100 in each calibration base 202 by the key; alternatively, the display end 205 may adopt a touch display screen or a liquid crystal display screen, and the display end 205 can display the status information of the gas sensor module 100 in each calibration base 202 through the control of the control mechanism 203.
In the preferred embodiment of the present invention, a communication mechanism 400 is further included; the communication mechanism 400 is located in the calibration main body 201, the communication mechanism 400 is in electrical signal connection with the control mechanism 203, the communication mechanism 400 is used for receiving a control signal of an external control device and transmitting the control signal to the control mechanism 203, and the control mechanism 203 correspondingly controls the state of the gas sensor module 100 in each calibration base 202.
In a preferred embodiment of the present invention, the communication mechanism 400 includes a receiver and a wireless transmitter; the receiver is in electrical signal connection with the control mechanism 203 and the wireless transmitter, the receiver and the wireless transmitter are in electrical signal connection with the external mobile terminal 500, the external mobile terminal 500 sends a control signal to the control mechanism 203 through the receiver, the wireless transmitter is in electrical signal connection with the control mechanism 203, and the control mechanism 203 transmits the state information of the gas sensor module 100 in each calibration base 202 to the external mobile terminal 500 through the wireless transmitter.
The mobile terminal 500 may include a smart phone, a PAD tablet, a tablet computer, and the like, and may have wireless and bluetooth functions.
In this embodiment, the control mechanism 203 of the calibration main body 201 and the mobile terminal 500 can form signal interconnection through the communication mechanism 400, and the calibration main body 201 enables the mobile terminal 500 to be wirelessly connected to the calibration main body 201 through the communication mechanism 400 having wireless transmission and processing functions, so that the state of each calibration base 202 in the calibration main body 201 can be checked at any time through the mobile terminal 500, and meanwhile, a control instruction can be sent to the control mechanism 203 through the mobile terminal 500.
Alternatively, the communication mechanism 400 may employ a bluetooth communication module, and the bluetooth communication module is in communication connection with the mobile terminal 500 through bluetooth transmission; further, the receiver may receive an instruction of the mobile terminal 500 through the bluetooth communication module to transmit a control instruction to the control mechanism 203 through the mobile terminal 500, and the control mechanism 203 may feed back control information to the mobile terminal 500 through the wireless transmitter, so that the wireless transmitter may transmit a data signal to the mobile terminal 500 because the bluetooth communication module implements wireless connection between the wireless transmitter and the mobile terminal 500; in addition, the communication mechanism 400 may also employ a WiFi communication module, which is not described herein again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A calibration arrangement for a gas sensor, comprising: the gas sensor comprises a gas sensor module, a calibration mechanism and a gas distribution mechanism;
the calibration mechanism is provided with a plurality of calibration bases, the gas sensor module is accommodated in the calibration bases, and the calibration mechanism is used for electrifying the gas sensor module in the calibration bases so as to carry out aging operation on the gas sensor module;
the gas diversion mechanism is provided with a plurality of gas marking assemblies corresponding to the calibration base, each gas marking assembly corresponds to one calibration base, the gas marking assemblies are connected with the gas sensor modules on the calibration bases, and the gas marking assemblies are used for conveying gas with standard concentration to the corresponding gas sensor modules so as to calibrate the gas sensor modules.
2. The calibration device for the gas sensor as recited in claim 1, wherein the gas sensor module comprises a gas sensor body, a stationary housing and a parameter storage portion;
the gas sensor main body and the parameter storage part are both contained in the fixed shell, the parameter storage part is located at the end of the fixed shell, the parameter storage part is electrically connected with the gas sensor main body, the parameter storage part is used for being connected with an electric signal in the calibration base, and the parameter storage part is used for storing the parameters of the gas sensor main body for receiving the standard concentration gas calibrated and calibrated.
3. The calibration device for the gas sensor as recited in claim 2, wherein the calibration mechanism further comprises a calibration body and a control mechanism;
the calibration bases are arranged at equal intervals along the surface of the calibration main body, the control mechanism is arranged on the calibration main body, and the control mechanism is in electric signal connection with each calibration base.
4. The calibration device for the gas sensor as recited in claim 3, wherein the flow dividing mechanism comprises a gas flow divider and a gas calibration assembly;
the gas flow divider is located on one side of the calibration main body and connected with the calibration main body, a plurality of first gas outlets are formed in the gas flow divider, each first gas outlet corresponds to one group of gas calibration assemblies, the gas flow divider is connected with the gas calibration assemblies through the first gas outlets, each group of gas calibration assemblies comprises a plurality of gas calibration assemblies, the plurality of gas calibration assemblies are sequentially connected in series, and the plurality of gas calibration assemblies sequentially receive standard concentration gas output by the gas flow divider.
5. The calibration device for the gas sensor as recited in claim 4, wherein the calibration gas assembly comprises a calibration gas hood and a cascade gas pipe;
mark gas cover is provided with first air inlet, second gas outlet and third gas outlet, mark gas cover covers and locates fixed casing's outside, just mark gas cover with fixed casing is kept away from the one end sealing connection of parameter storage portion, the second gas outlet of mark gas cover runs through fixed casing with gas sensor main part intercommunication, arbitrary adjacent two mark gas cover passes through cascade trachea is connected, cascade tracheal both ends respectively with one mark gas cover's third gas outlet and adjacent another mark gas cover's first air inlet is connected.
6. The calibration device for the gas sensor as recited in claim 5, wherein the gas splitter comprises a gas splitting body, a gas pipe joint and a gas outlet hose;
a plurality of first gas outlet along the extended surface of gas reposition of redundant personnel main part evenly sets up, the quantity of air pipe joint with the quantity one-to-one of first gas outlet, every the air pipe joint with correspond first gas outlet is connected, give vent to anger the hose with the air pipe joint is kept away from the one end of first gas outlet is connected, gas reposition of redundant personnel main part passes through the hose of giving vent to anger with the first air inlet of mark gas cover is connected.
7. The calibration device for the gas sensor as recited in claim 6, wherein the shunt mechanism further comprises a solenoid valve;
the gas reposition of redundant personnel main part is provided with the second air inlet, the solenoid valve with the second air inlet of gas reposition of redundant personnel main part is connected, the solenoid valve is used for being connected with outside standard concentration air supply, the solenoid valve is used for controlling outside standard concentration air supply to the opening and close of the gaseous standard concentration of transport of gas reposition of redundant personnel main part.
8. The calibration device for the gas sensor as recited in claim 7, wherein the calibration mechanism further comprises a control end and a display end;
the control end and the display end are respectively in electrical signal connection with the control mechanism, the control mechanism is in electrical signal connection with the electromagnetic valve, the control end correspondingly controls the power-on opening and closing of any one of the calibration bases and the opening and closing of the electromagnetic valve through the control mechanism, and the display end is used for displaying state information of the gas sensor module in each calibration base.
9. The calibration device for the gas sensor as recited in any one of claims 3-8, further comprising a communication mechanism;
the communication mechanism is positioned in the calibration main body and is in electric signal connection with the control mechanism, the communication mechanism is used for receiving a control signal of external control equipment and transmitting the control signal to the control mechanism, and the control mechanism correspondingly controls the state of the gas sensor module in each calibration base.
10. The calibration arrangement for a gas sensor as recited in claim 9, wherein the communication mechanism comprises a receiver and a wireless transmitter;
the receiver is in electric signal connection with the control mechanism and the wireless transmitter respectively, the receiver and the wireless transmitter are in electric signal connection with an external mobile terminal respectively, the external mobile terminal sends a control signal to the control mechanism through the receiver, the wireless transmitter is in electric signal connection with the control mechanism, and the control mechanism transmits the state information of the gas sensor module in each calibration base to the external mobile terminal through the wireless transmitter.
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| CN202110317207.1A CN113109510A (en) | 2021-03-25 | 2021-03-25 | Calibration device for gas sensor |
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| CN113588887A (en) * | 2021-08-20 | 2021-11-02 | 湖南长缆智能科技有限公司 | Gas sensor proofreading device and gas sensor proofreading system |
| CN115200676A (en) * | 2022-06-01 | 2022-10-18 | 广州奥松电子股份有限公司 | Calibration device |
| CN115453063A (en) * | 2022-09-21 | 2022-12-09 | 深圳市安帕尔科技有限公司 | Automatic calibration system |
| WO2024120951A1 (en) * | 2022-12-08 | 2024-06-13 | Robert Bosch Gmbh | Method for detecting a fluid |
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