CN105588620A - Internet-of-things water meter calibration system - Google Patents
Internet-of-things water meter calibration system Download PDFInfo
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- CN105588620A CN105588620A CN201510921402.XA CN201510921402A CN105588620A CN 105588620 A CN105588620 A CN 105588620A CN 201510921402 A CN201510921402 A CN 201510921402A CN 105588620 A CN105588620 A CN 105588620A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000012795 verification Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000012423 maintenance Methods 0.000 claims abstract description 9
- 230000004044 response Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000007726 management method Methods 0.000 description 14
- 238000007689 inspection Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
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- Physics & Mathematics (AREA)
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- General Physics & Mathematics (AREA)
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Abstract
物联网水表检定系统，该系统包括水表检定台、水位测量仪、摄像头、流量计、工控机、计算机云管理系统、手持查询终端、二维码扫码枪。通过工控机控制电磁阀的开断；按照需求调整好流量计标准流量后，恒流供水系统恒流供水，通过待检水表后进入水位测量仪。红外线对射装置包围在检测台四周，检定过程中，如有人为进行干扰，则红外线对射装置发出警示信号。本发明不仅能实现对水表的遍历检测，保证检测过程的可靠性，而且还能将检定结果以及水表相关信息存入云服务器，使检定过程可跟踪，便于表具后期的维护和管理。
Internet of things water meter verification system, the system includes water meter verification platform, water level measuring instrument, camera, flow meter, industrial computer, computer cloud management system, handheld query terminal, QR code scanning gun. The switching of the solenoid valve is controlled by the industrial computer; after the standard flow rate of the flowmeter is adjusted according to the demand, the constant flow water supply system supplies water with a constant flow, and enters the water level measuring instrument after passing through the water meter to be tested. The infrared beam-to-radio device is surrounded around the testing platform. During the verification process, if someone interferes artificially, the infrared-ray beam-to-ray device will send out a warning signal. The invention can not only realize the traversal detection of the water meter, ensure the reliability of the detection process, but also store the verification result and the relevant information of the water meter in the cloud server, so that the verification process can be tracked, and the later maintenance and management of the meter is convenient.
Description
Technical field
The present invention relates to Internet of Things control technology field, be specially Internet of Things water meter calibration.
Background technology
According to existing " Measurement Law of the People's Republic of China ", for trade settlement, security protection,The working measuring instrument of listing compulsory verification catalogue in of health care, environmental monitoring aspect, carries outCompulsory verification. Water resource measurement instrument is that the accuracy of commercialization and domestic meter and stability are because closingBe tied to trade company and resident's concern. Therefore designing a set of Internet of Things water meter calibration is not only convenient toAdministrative department of measurement, to the quality of measurement instrument of manufacturing, the repair inspection that exercises supervision, ensures outThe accuracy of factory's water meter, maintenance customer's vital interests; Can also comply with utility network,Intelligentized development trend, provides the table that flexibility is high, extended capability is strong tool, effectively meetsThe management expectancy of Running-water Company and industry.
At present the detection mode of water meter is the self-inspection one time while dispatching from the factory of Biao Ju manufacturer, running water public affairsAfter department takes water meter, survey sample again, and the management of water meter belongs to single this locality substantiallyManagement. While dispatching from the factory due to water meter, can not ensure that manufacturer's his-and-hers watches tool travels through self-inspection, from the beginningWaters corporation is only just sampling check also. Such calibrating flow process can not ensure can not ensure to useThe precision of water meter that take at family, is also not easy to show maintenance and the management in tool later stage. Therefore design oneKind possess automatic Verification, networking efficiently easily Internet of Things water meter calibration extremely haveMeaning.
Summary of the invention
According to above-mentioned 2 deficiencies, the object of the invention is to provide one can travel through inspection water meterAutomatic calibration platform, provide a set of cloud storage list tool management platform to realize the meticulous of water meter simultaneouslyChange management. By his-and-hers watches tool examine and determine, calibrating information warehouse-in, and carry out two dimension on table toolCode mark, realizes a table one yard, table tool information (producer, the date of production, calibrating information, pinSell, installation, maintenance and maintenance etc.) function such as can follow the tracks of all the life.
To achieve these goals, adopt technical scheme:
Internet of Things water meter calibration, this system comprise water meter calibration platform 1, floodometer 2,Camera 3, flowmeter 4, industrial computer 5, computer cloud management system 6, hand-held inquiry terminal7, Quick Response Code barcode scanning gun 8.
Described water meter calibration platform 1, floodometer 2, camera 3, flowmeter 4, industry controlMachine 5 forms the table tool test section of native system, and this part is responsible for the task in water meter testing processIssue, logic judgement, result judgement.
Water meter calibration platform 1 treats that by array water gauge forms; Constant current water system is passed through array successivelyAfter water gauge, be connected with the flowmeter 4 of each group of parallel connection, respectively organize flowmeter in parallel 4 respectively withThe corresponding connection of floodometer 2 that each group is in parallel; Described each group for the treatment of water gauge and flowmeter 4Branch road is provided with photoelectric sensor, magnetic valve;
Industrial computer 5 is connected with magnetic valve, floodometer 2 respectively, and industrial computer 5 passes through I/OBoard is accepted the signal of photoelectric sensor and magnetic valve transmission, and feeds back corresponding control signal to reachTo the object of controlling aqueduct current. Camera 3 is connected with industrial computer 5, and camera 3 is negativeThe reading for the treatment of water gauge in duty testing process carries out corresponding data collection. Quick Response Code barcode scanning gun 8Be connected with industrial computer 5; Industrial computer 5 by data server respectively with computer cloud management system6, hand-held inquiry terminal 7 is connected.
Floodometer 2 is made up of volumetric glass and photoelectric sensor, is responsible for detecting measuring vesselLiquid level.
Described water meter calibration platform 1 be circumferentially with infrared opposite-radiation device, examined and determine in order to ensureingThe accuracy of journey.
Described computer cloud management system 6 comprises client and server, in server, installsSqlsever database, is used for storage list tool various information. Client is testing staff and userAn interactive interface is provided, is convenient to testing staff and user's his-and-hers watches tool and inquires about, safeguard and moreNewly.
Described hand-held inquiry terminal 7 is inquired about for attendant and user's later stage, hand-held looking intoAsk terminal and directly read table body RFID label, obtain showing, after the identification information of tool, passing through networkAccessing database reads all kinds of maintenance informations of table tool.
Described Quick Response Code barcode scanning gun 8 receives the verification result from industrial computer 5, and will examine and determine knotFruit and table tool identification information print on the RFIF label of table body by RFID method.
The profitable fruit of native system is:
1, security is good. The various information relevant to table tool all deposited to cloud server, realizesThe Internet of Things management of table tool, can follow the tracks of all the life. Prevent that manufacturer, user etc. are in testing processIn or between the operating period his-and-hers watches tool privately change.
2, realize the automatic calibration to water meter. Install after water meter, only need defeated on computersEnter calibrating information. Device completes the calibrating of nominal, boundary, minimum discharge automatically. It has alleviatedTesting person's labour intensity, the precision of calibrating efficiency and operation gradual change are improved.
3, testing process is intuitively credible, at home on the basis of the most frequently used " volumetric method calibrating ",Adopt video camera to replace human eye to carry out water-meter reading pointer, meet national metrological verification regulationsThe meter reading requirement of JJG162-85 etc., automation accuracy of identification reaches 1/3 of water meter minimum of a value.
4, there is stronger data management function, the computer calibrating software that calibrating installation is equipped with,Automatically calculate and draw calibrating conclusion by code, can preserve whole water meter calibration data, there is inspectionDetermine the perfect database functions such as record queries, correction, statistics, printing.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the workflow diagram of this verification system.
In figure: 1, water meter calibration platform, 2, floodometer, 3, camera, 4, flowmeter,5, industrial computer, 6, computer cloud management system, 7, hand-held inquiry terminal, 8, Quick Response Code sweepsCode rifle.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1-2, Internet of Things water meter calibration, this system comprise water meter calibration platform 1,Floodometer 2, camera 3, flowmeter 4, industrial computer 5, computer cloud management system 6,Hand-held inquiry terminal 7, Quick Response Code barcode scanning gun 8.
Described water meter calibration platform 1, floodometer 2, camera 3, flowmeter 4, industry controlMachine 5 forms the table tool test section of native system. This part is responsible for the task in water meter testing processIssue, logic judgement, result judgement. Set working environment by industrial computer, comprise test chart toolThe mode of operation of quantity, precision control, testing time and flowmeter etc. Industrial computer 5 is inserted withReceive and dispatch the I/O board of data signal, control the switch of magnetic valve according to corresponding program,Ensure in each testing process with this, the running water volume of each water meter of flowing through is identical. Water levelMeasuring instrument 2, camera 3 are connected with industrial computer 5, and wherein floodometer 2 is by amount of glassDevice and photoelectric sensor composition, be responsible for detecting measuring vessel liquid level; Camera 3 is responsible for inspectionReading to water meter in survey process. Before valve left by magnetic valve, camera is taken one group of meter reading,After liquid level arrives formulation height, photoelectric sensor sends liquid level arriving signal, and industrial computer connectsAfter being subject to signal, feedback is closed magnetic valve signal. After finishing, detection again reads one group of data of water meter. FigureAs in acquisition system, pictorial information being converted into data message, and send to industrial computer (5), soThe rear error of utilizing volumetric method can calculate each water meter. Industrial computer 5 is uploaded to result of determinationDatabase server.
The mode that described water meter calibration adopts industrial computer and sensor technology to combine, bagDraw together infrared opposite-radiation device, magnetic valve, floodometer, flowmeter and industrial computer. Constant current suppliesWater system, treat water gauge, magnetic valve, flowmeter 4, floodometer and industrial computer 5 successivelyConnect. By cut-offfing of industrial computer control magnetic valve; Adjust flowmeter normal stream according to demandAfter amount, the constant current of constant current water system supply water, by treat water gauge laggard enter floodometer. RedOutside line is enclosed in verification table surrounding to injection device, in verification process, if any people for disturbing,Infrared opposite-radiation device sends alarm signal.
Described computer cloud management system comprises data server and information management client.Industrial computer 5 is connected with electric cabinet, image capture module, Quick Response Code marking machine. Work as verification tableExecute after the detection of one group of water meter, image capture module is by two groups of the front and back that collect dial plate figurePicture input computer, industrial computer 5 changes into data message by algorithm computing by image information,And bring volumetric method formula into and calculate. Judge whether closing of each table tool according to result of calculationLattice, and send testing result information to Quick Response Code marking machine. Data server is used for depositingThe information of dispatching from the factory of storage testing result and table tool, for user's subsequent query.
Described Quick Response Code barcode scanning gunlock is accepted testing result and the table tool that industrial computer 5 transmitsInformation, and testing result is printed on the RFID label of each table tool.
Described hand-held inquiry terminal is the equipment of user's final-period management and Maintenance Table tool, can pass throughRead the RFID label of table on tool or input table tool and number the maintenance information of question blank tool.This hand-held inquiry terminal carries out communication by GSM networking or Ethernet and data server.
Claims (6)
1. Internet of Things water meter calibration, is characterized in that: this system comprises water meter calibration platform(1), floodometer (2), camera (3), flowmeter (4), industrial computer (5), meterCalculation machine cloud management system (6), hand-held inquiry terminal (7), Quick Response Code barcode scanning gun (8);
Described water meter calibration platform (1), floodometer (2), camera (3), flowmeter(4), the table tool test section of industrial computer (5) composition native system, this part is responsible for water meter inspectionTask in survey process is issued, logic judges, result judgement;
Water meter calibration platform (1) treats that by array water gauge forms; Constant current water system is passed through successivelyArray is connected with the flowmeter (4) of each group of parallel connection after water gauge, respectively organizes flowmeter in parallel(4) respectively with the corresponding connection of floodometer (2) of each group of parallel connection; Described treat water gauge withEach group of branch road of flowmeter (4) is provided with photoelectric sensor, magnetic valve;
Industrial computer (5) is connected with magnetic valve, floodometer (2) respectively, industrial computer (5)Accept the signal of photoelectric sensor and magnetic valve transmission by I/O board, and feed back corresponding controlSignal is to reach the object of controlling aqueduct current; Camera (3) connects with industrial computer (5)Connect, the reading for the treatment of water gauge in the responsible testing process of camera (3) carries out corresponding data and adoptsCollection; Quick Response Code barcode scanning gun (8) is connected with industrial computer (5); Industrial computer (5) passes through dataServer is connected with computer cloud management system (6), hand-held inquiry terminal (7) respectively.
2. Internet of Things water meter calibration according to claim 1, is characterized in that:Floodometer (2) is made up of volumetric glass and photoelectric sensor, is responsible for detecting measuring vesselLiquid level.
3. Internet of Things water meter calibration according to claim 1, is characterized in that:Described water meter calibration platform (1) be circumferentially with infrared opposite-radiation device, examined and determine in order to ensureingThe accuracy of journey.
4. Internet of Things water meter calibration according to claim 1, is characterized in that:Described computer cloud management system (6) comprises client and server, in server, installsSqlsever database, is used for storage list tool various information; Client is testing staff and userAn interactive interface is provided, is convenient to testing staff and user's his-and-hers watches tool and inquires about, safeguard and moreNewly.
5. Internet of Things water meter calibration according to claim 1, is characterized in that:Described hand-held inquiry terminal (7) is inquired about for attendant and user's later stage, hand-held looking intoAsk terminal and directly read table body RFID label, obtain showing, after the identification information of tool, passing through networkAccessing database reads all kinds of maintenance informations of table tool.
6. Internet of Things water meter calibration according to claim 1, is characterized in that:Described Quick Response Code barcode scanning gun (8) receives the verification result from industrial computer (5), and will examine and determineResult and table tool identification information print on the RFIF label of table body by RFID method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510921402.XA CN105588620A (en) | 2015-12-13 | 2015-12-13 | Internet-of-things water meter calibration system |
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| CN201510921402.XA CN105588620A (en) | 2015-12-13 | 2015-12-13 | Internet-of-things water meter calibration system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709610A (en) * | 2018-07-10 | 2018-10-26 | 中国计量大学 | A kind of RFID water meter calibrations and data transfer apparatus and wiring method |
| CN109462664A (en) * | 2018-12-29 | 2019-03-12 | 软通智慧科技有限公司 | Farming-grazing irrigation water meter monitoring system |
| CN110631661A (en) * | 2018-06-21 | 2019-12-31 | 江苏金钰铭电子有限公司 | Water meter verification system capable of being remotely monitored and controlled based on Internet |
| CN111508152A (en) * | 2020-03-31 | 2020-08-07 | 宁夏北斗星物联科技有限公司 | Full-intelligent Internet of things tap water cloud control water meter |
| CN112710366A (en) * | 2020-12-07 | 2021-04-27 | 杭州炬华科技股份有限公司 | Electronic water meter word-running error correction method and device |
| CN113720424A (en) * | 2021-07-26 | 2021-11-30 | 广州能源检测研究院 | Serial-parallel coupling type multi-station water meter calibrating device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6378354B1 (en) * | 2000-07-21 | 2002-04-30 | Micro Motion, Inc. | System for calibrating a drive signal in a coriolis flowmeter to cause the driver to vibrate a conduit in a desired mode of vibration |
| CN1540297A (en) * | 2003-04-22 | 2004-10-27 | 深圳市水务(集团)有限公司 | Automatic calibrating apparatus and calibrating method for ordinary water meter |
| CN1811351A (en) * | 2005-12-28 | 2006-08-02 | 张祖明 | Flow standard measuring apparatus by photographic technique |
| CN201122109Y (en) * | 2007-11-30 | 2008-09-24 | 成都市英子测控科技有限公司 | Water meter self-checking device |
| US20090071264A1 (en) * | 2007-07-26 | 2009-03-19 | Abb Limited | Flowmeter |
| CN203024803U (en) * | 2013-01-18 | 2013-06-26 | 重庆中陆承大科技有限公司 | Water meter and water meter identification system |
| CN103209211A (en) * | 2013-03-06 | 2013-07-17 | 江苏运赢物联网产业发展有限公司 | Meter reading recognizing method, meter self-service reading system and reading method thereof |
-
2015
- 2015-12-13 CN CN201510921402.XA patent/CN105588620A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6378354B1 (en) * | 2000-07-21 | 2002-04-30 | Micro Motion, Inc. | System for calibrating a drive signal in a coriolis flowmeter to cause the driver to vibrate a conduit in a desired mode of vibration |
| CN1540297A (en) * | 2003-04-22 | 2004-10-27 | 深圳市水务(集团)有限公司 | Automatic calibrating apparatus and calibrating method for ordinary water meter |
| CN1811351A (en) * | 2005-12-28 | 2006-08-02 | 张祖明 | Flow standard measuring apparatus by photographic technique |
| US20090071264A1 (en) * | 2007-07-26 | 2009-03-19 | Abb Limited | Flowmeter |
| CN201122109Y (en) * | 2007-11-30 | 2008-09-24 | 成都市英子测控科技有限公司 | Water meter self-checking device |
| CN203024803U (en) * | 2013-01-18 | 2013-06-26 | 重庆中陆承大科技有限公司 | Water meter and water meter identification system |
| CN103209211A (en) * | 2013-03-06 | 2013-07-17 | 江苏运赢物联网产业发展有限公司 | Meter reading recognizing method, meter self-service reading system and reading method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631661A (en) * | 2018-06-21 | 2019-12-31 | 江苏金钰铭电子有限公司 | Water meter verification system capable of being remotely monitored and controlled based on Internet |
| CN108709610A (en) * | 2018-07-10 | 2018-10-26 | 中国计量大学 | A kind of RFID water meter calibrations and data transfer apparatus and wiring method |
| CN108709610B (en) * | 2018-07-10 | 2020-04-03 | 中国计量大学 | RFID water meter verification and data writing device and method |
| CN109462664A (en) * | 2018-12-29 | 2019-03-12 | 软通智慧科技有限公司 | Farming-grazing irrigation water meter monitoring system |
| CN109462664B (en) * | 2018-12-29 | 2024-12-10 | 软通智慧科技有限公司 | A monitoring system for agricultural and animal husbandry irrigation water meters |
| CN111508152A (en) * | 2020-03-31 | 2020-08-07 | 宁夏北斗星物联科技有限公司 | Full-intelligent Internet of things tap water cloud control water meter |
| CN112710366A (en) * | 2020-12-07 | 2021-04-27 | 杭州炬华科技股份有限公司 | Electronic water meter word-running error correction method and device |
| CN113720424A (en) * | 2021-07-26 | 2021-11-30 | 广州能源检测研究院 | Serial-parallel coupling type multi-station water meter calibrating device and method |
| CN113720424B (en) * | 2021-07-26 | 2023-08-15 | 广州能源检测研究院 | Series-parallel coupling type multi-station water meter calibrating device and method |
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Application publication date: 20160518 |