CN209342681U - A kind of compound gas detector automated calibration system - Google Patents
A kind of compound gas detector automated calibration system Download PDFInfo
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- CN209342681U CN209342681U CN201821825657.1U CN201821825657U CN209342681U CN 209342681 U CN209342681 U CN 209342681U CN 201821825657 U CN201821825657 U CN 201821825657U CN 209342681 U CN209342681 U CN 209342681U
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Abstract
The utility model discloses a kind of compound gas detector automated calibration systems, including detecting storehouse, composite gas tester and image identification system, the composite gas tester is placed in detection storehouse, the image identification system includes being installed on outside detection storehouse, the image identification system is read and the data of the display of record composite gas tester, and data are uploaded to control module by Ethernet.The utility model effectively overcomes the step of manual calibration composite gas tester cumbersome, avoids toxic and harmful gas and contacts with operator, has ensured the safety of testing staff, while improving detection rates.
Description
Technical field
The utility model discloses a kind of compound gas detector automated calibration systems, are related to instrument testing calibration field.
Background technique
At present for composite gas tester, since it tests the various and ununified normal data end of gaseous species
Mouthful, currently on the market without corresponding composite gas tester self-checking device.It is directed to the inspection of the quasi-instrument currently on the market
Survey mostly uses artificial detection, and during detection, operator is easy the harm by poisonous and harmful calibrating gas, and entire
Calibration process manual record is comparatively laborious, and detection rates are greatly affected.The Deng Li of Hangzhou Institute of Quality Technology Supervision and Measurement
Sweet smell et al. has invented the self-checking device of multiple gases alarm, which is based on PLC technology basis, passes through electric potential signal
Variation, come judge alarm output numerical value change, the method increase the efficiency of detection, but have certain limitation,
Its alarm exported primarily directed to three-wire system or four-wire system, for the alarm or tester of infrared data output port etc.
It is not available the device.
Utility model content
The utility model effectively overcomes manual calibration composite gas tester for the defects of above-mentioned background technique
Complex steps avoid toxic and harmful gas and contact with operator, have ensured the safety of testing staff, while improving detection
Rate.
To achieve the above object, the technical solution adopted in the utility model is as follows: a kind of automatic school of compound gas detector
Barebone, including detection storehouse and image identification system, it is described to detect for placing the composite gas tester with calibration in storehouse, it is multiple
It closes gas tester and is used to test the gas data into detection storehouse, the image identification system includes being installed on detection storehouse
Outside, the image identification system reads and records the data of the display of composite gas tester, and data are passed through Ethernet
It is uploaded to control module.
Further, further include N gas inlet pipe road, switch pipe valve and M signal piping, the gas are defeated
Enter pipeline and connected with the input terminal for switching pipe valve, the output end of the switching pipe valve is connected with signal piping.
Further, the gas inlet pipe road includes passing through the sequentially connected air accumulator of pipeline, high pressure valve, pressure
Table, pressure reducing valve and autocontrol valve, high pressure valve are the direct controlled valves of air accumulator, and pressure gauge and pressure reducing valve cooperate regulating gas
Pressure, make gas control in reasonable pressure limit, as long as the switch of autocontrol valve control gas circuit, realization were entirely calibrated
The automation of the gas switching of journey, the input terminal of the autocontrol valve connection switching pipe valve, the N is 1 ~ 10,
The air accumulator can be used for storing the sour gas such as hydrochloric acid, sulfuric acid, nitric acid, hydrofluoric acid and high pure nitrogen.
Further, the signal piping includes by the sequentially connected gas mass flow meter of pipeline and detecting storehouse,
The connection of gas mass flow meter and the output end of switching pipe valve, the M is 1 ~ 3, the gas mass flow
Meter is by gas flow control range in 0~2L/min, and measurement accuracy is better than ± 1%, and repeatability is better than ± 0.5%.
Further, the image identification system uses Keyemce CV-X4.0 image identification system, including CCD to image
Head and image processing system, the CCD camera alignment composite gas tester are monitored, and realize compound gas detector
Number is read, and the CCD camera is 10,000,000 fixed-focus black and white industrial cameras, has gigabit ethernet interface, compatible GigE
Vision video transmission protocol, described image processing system is the knowledge of OCR optical character, by calculating and analyzing CCD camera institute
Pixel arrangement rule is matched to correct characters in turn in the photo of shooting, and correct characters are converted into text formatting.
Further, the autocontrol valve is Unidirectional solenoid valve, and spool material is PTFE, has corrosion resistance, work
It when the electromagnetic coil of Unidirectional solenoid valve is powered when making, moves magnetic core and is attracted, band ovable valve stem moves upwards, and pilot hole is opened, and makes spool
It is quickly floated up under the drive of upper and lower cavity pressure difference, Unidirectional solenoid valve is opened.When electromagnetic valve coil powers off, valve rod is in spring force
Under the action of close pilot hole so that spool moves downward under the collective effect of upper and lower cavity pressure difference and spring force, unidirectional electromagnetism
Valve is closed.
Further, the control module uses SIMATIC S7-1200PLC-CPU1215C chip controls, described
Control module uses SIMATIC S7-1200PLC-CPU1215C chip controls, and the control module includes: PLC master control mould
Block and industry PC, the PLC main control module are SIMATIC S7-1200PLC-CPU1215C, and the PLC main control module includes string
Mouth mold block, PLC1200 module, analog I/O module；
The industry PC is connected by 232 serial ports and the serial port module,
The output end of the analog I/O module is tapped by relay in autocontrol valve respectively,
The output end of the PLC1200 module connects calibrating installation buzzer and headlamp respectively,
The industry PC is connected to gas mass flow meter by 485 serial ports of RS,
The industry PC is connected to industrial camera, and the industry PC access to LAN by Ethernet switch.
Further, the industry PC is connect with printer, the original record generation of realization detection composite gas tester,
It saves and prints.
The data that the utility model is detected by the normal data and composite gas tester to be calibrated of different standard gas
It is compared on industry PC, completes the calibration to composite gas tester, detect the performance of composite gas tester.
The utility model has the advantages that 1. is cumbersome the step of effectively overcoming manual calibration composite gas tester, avoid poisonous and harmful
Gas is contacted with operator, has ensured the safety of testing staff, while improving detection rates.
2. the present invention needs that the error of indication, repeatability, zero point can be carried out to composite gas tester according to calibration item
Drift, span drift, response time etc. are tested.
Detailed description of the invention
The device structure schematic diagram figure of Fig. 1 the utility model；
The device framework schematic diagram of Fig. 2 the utility model.
Specific embodiment
The implementation of technical solution is described in further detail with reference to the accompanying drawing.Following embodiment is only used for more clear
Illustrate to Chu the technical solution of the utility model, and cannot be used as a limitation the limitation protection scope of the utility model.
As shown in Figure 1 and 2, this example provides: a kind of compound gas detector automated calibration system, including detection 1 He of storehouse
Image identification system 2, the detection storehouse 1 are interior for placing composite gas tester 3 to be calibrated, the image identification system
2 include being installed on outside detection storehouse 1, and the image identification system 2 is read and the number of the display of record composite gas tester 3
According to, and data are uploaded to control module 4 by Ethernet.
Further include N gas inlet pipe road, switch pipe valve 5 and M signal piping, the gas inlet pipe road and
Switch the input terminal connection of pipe valve 5, the output end of the switching pipe valve 5 is connected with signal piping.
The gas inlet pipe road includes by the sequentially connected air accumulator 61 of pipeline, high pressure valve 62, pressure gauge 63, subtracts
Pressure valve 64 and autocontrol valve 65, the input terminal of the connection of the autocontrol valve 65 switching pipe valve 5, the N is 1 ~ 10
Item, uses for switching, and the air accumulator 61 can be used for storing the Standard Gases such as sulfur dioxide, nitrogen oxides, methane, hydrogen sulfide
Body and high pure nitrogen.
The signal piping includes by the sequentially connected gas mass flow meter 7 of pipeline and detection storehouse 1, the gas
The output end of the connection of weight flowmeter 7 and switching pipe valve 5, the M are 1 ~ 3, are used for switching, the gas
Mass flowmenter 7 is by gas flow control range in 0~2L/min, and measurement accuracy is better than ± 1%, and repeatability is better than ± 0.5%.
The image identification system 2 uses Keyemce CV-X4.0 image identification system 2, including CCD camera and image
Processing system, the CCD camera alignment composite gas tester 3 are monitored, and realize that the number of compound gas detector is read
It takes, the CCD camera is 10,000,000 fixed-focus black and white industrial cameras, has gigabit ethernet interface, compatible GigE Vision figure
As transport protocol, described image processing system is the knowledge of OCR optical character, by calculating and analyzing photograph captured by CCD camera
Pixel arrangement rule is matched to correct characters in turn in piece, and correct characters are converted into text formatting.
The autocontrol valve 65 is Unidirectional solenoid valve, and spool material is PTFE, has corrosion resistance, when work is unidirectional
It when the electromagnetic coil of solenoid valve is powered, moves magnetic core and is attracted, band ovable valve stem moves upwards, and pilot hole is opened, and makes spool in upper and lower cavity
It is quickly floated up under the drive of pressure difference, Unidirectional solenoid valve is opened；When Unidirectional solenoid valve coil blackout, work of the valve rod in spring force
With lower closing pilot hole, so that spool moves downward under the collective effect of upper and lower cavity pressure difference and spring force, Unidirectional solenoid valve is closed
It closes.-
The control module uses SIMATIC S7-1200PLC-CPU1215C chip controls, the control module
Using SIMATIC S7-1200PLC-CPU1215C chip controls, the control module includes: PLC main control module and industry control
PC, the PLC main control module be SIMATIC S7-1200PLC-CPU1215C, the PLC main control module include serial port module,
PLC1200 module, analog I/O module；
The industry PC is connected by 232 serial ports and the serial port module,
The output end Q2.0 to Q2.7, Q3.0 to Q3.4 of the analog I/O module SM1223 can be tapped by relay respectively
In autocontrol valve,
The output end Q0.0 to Q0.4 of the PLC1200 module connects calibrating installation buzzer and headlamp respectively,
The industry PC is connected to gas mass flow meter by 485 serial ports of RS,
The industry PC is connected to industrial camera, and the industry PC access to LAN 8 by Ethernet switch.
The industry PC is connect with printer 9, realizes the printing of the original record, certificate of the detection of composite gas tester.
Present embodiments provide a kind of error of indication detection about composite gas tester: by composite gas to be calibrated
Tester is fixed in detection storehouse, and according to calibration item, parameter (including standard gas type, concentration, flow are arranged on industry PC
Deng) after, starting test；Autocontrol valves on A pipeline are opened, and for the standard gas A in air accumulator by high pressure valve, pressure reducing valve is gentle
After weight flowmeter, into detection storehouse, composite gas tester to be calibrated detects standard gas A, composite gas to be calibrated
Tester generates test data, and the display data of display instrument increase, while on CCD camera alignment composite gas tester
Display instrument is monitored data, and after pending data is stablized, image processing system is clapped by calculating and analyzing CCD camera
Pixel arrangement rule is matched to correct characters in turn in the photo taken the photograph, and correct characters is converted into text formatting, and will conversion
Test data afterwards is uploaded to industry PC by Ethernet, certainly by composite gas tester detection data and standard gas A to be calibrated
Body data are compared；If the error of indication is beyond setting range, the starting of calibrating installation buzzer is alarmed, and detection project is stopped
Only；If the error of indication, in range, automatic valve is closed on industry PC firing order A pipeline, B pipeline automatic valve is beaten
It opens, standard gas B enters detection storehouse and starts to detect second calibration point and the subsequent instrumentation calibration of composite gas tester.
It is needed that repeatability, null offset, span drift, sound can also be carried out to composite gas tester according to calibration item
It is tested between seasonable etc.；The utility model is detected by the data and composite gas tester to be calibrated of different standard gas
Data out are compared on industry PC, by combining image identification system to reading data, complete to test composite gas
The calibration of instrument.
The utility model detects, if being detected as multiple again for calibrating underproof composite gas tester after adjustable
Gas tester faults itself is closed, then rejects, is not detecting.
After the utility model is tested, autocontrol valve is closed；The exhaust gas detected in storehouse is extracted out by exhaust fan.
The utility model provides a kind of composite gas tester automated calibration system, which can effectively overcome people
The step of work detects is cumbersome, avoids toxic and harmful gas and contacts with operator, has ensured the safety of testing staff, mentioned simultaneously
High detection rates.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and deformations can also be made, these change
It also should be regarded as the protection scope of the utility model into deformation.
Claims (8)
1. a kind of compound gas detector automated calibration system, which is characterized in that described including detection storehouse and image identification system
For placing composite gas tester in detection storehouse, the image identification system includes being installed on outside detection storehouse, the figure
As the data that identifying system is read and record composite gas tester is shown, and data are uploaded to control mould by Ethernet
Block.
2. a kind of compound gas detector automated calibration system according to claim 1, which is characterized in that further include N item
Gas inlet pipe road switches pipe valve and M signal piping, the input on the gas inlet pipe road and switching pipe valve
End connection, the output end of the switching pipe valve are connected with signal piping.
3. a kind of compound gas detector automated calibration system according to claim 2, which is characterized in that the gas is defeated
Enter pipeline include by the sequentially connected air accumulator of pipeline, high pressure valve, pressure gauge, pressure reducing valve and autocontrol valve, it is described from
The input terminal of dynamic control valve connection switching pipe valve, the N is 1 ~ 10.
4. a kind of compound gas detector automated calibration system according to claim 2, which is characterized in that the detection
Pipeline includes by the sequentially connected gas mass flow meter of pipeline and detection storehouse, and the gas mass flow meter is connected and cut
The output end of pipe valve is changed, the M is 1 ~ 3.
5. a kind of compound gas detector automated calibration system according to claim 1, which is characterized in that the image
Identifying system uses Keyemce CV-X4.0 image identification system, including CCD camera and image processing system, realizes compound gas
The number of body detector is read, and the CCD camera is 10,000,000 fixed-focus black and white industrial cameras, has gigabit ethernet interface,
Compatible GigE Vision video transmission protocol, described image processing system are OCR optical character identification.
6. a kind of compound gas detector automated calibration system according to claim 3, which is characterized in that described is automatic
Control valve is Unidirectional solenoid valve, and spool material is PTFE.
7. a kind of compound gas detector automated calibration system according to claim 1, which is characterized in that the control
Module use SIMATIC S7-1200PLC-CPU1215C chip controls, the control module include: PLC main control module and
Industry PC, the PLC main control module are SIMATIC S7-1200PLC-CPU1215C, and the PLC main control module includes serial ports mould
Block, PLC1200 module, analog I/O module；
The industry PC is connected by 232 serial ports and the serial port module,
The output end of the analog I/O module is tapped by relay in autocontrol valve respectively,
The output end of the PLC1200 module connects calibrating installation buzzer and headlamp respectively,
The industry PC is connected to gas mass flow meter controller by 485 serial ports of RS,
The industry PC is connected to industrial camera, and the industry PC access to LAN by Ethernet switch.
8. a kind of compound gas detector automated calibration system according to claim 7, which is characterized in that the industry PC
It is connect with printer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821825657.1U CN209342681U (en) | 2018-11-07 | 2018-11-07 | A kind of compound gas detector automated calibration system |
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| CN201821825657.1U CN209342681U (en) | 2018-11-07 | 2018-11-07 | A kind of compound gas detector automated calibration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693922A (en) * | 2020-08-04 | 2020-09-22 | 云南电力技术有限责任公司 | Automatic calibration system of impedance tester |
-
2018
- 2018-11-07 CN CN201821825657.1U patent/CN209342681U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693922A (en) * | 2020-08-04 | 2020-09-22 | 云南电力技术有限责任公司 | Automatic calibration system of impedance tester |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201222 Address after: 210049 No.10 Xianlin Avenue, Qixia District, Nanjing City, Jiangsu Province Patentee after: JIANGSU BEIDOU SATELLITE NAVIGATION TESTING CENTER Co.,Ltd. Address before: 210049 10 Ma Qun Road, Qixia District, Nanjing, Jiangsu. Patentee before: NANJING INSTITUTE OF MEASUREMENT AND TESTING TECHNOLOGY |
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| TR01 | Transfer of patent right |