CN1540297A - Automatic calibrating apparatus and calibrating method for ordinary water meter - Google Patents
Automatic calibrating apparatus and calibrating method for ordinary water meter Download PDFInfo
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- CN1540297A CN1540297A CNA031143024A CN03114302A CN1540297A CN 1540297 A CN1540297 A CN 1540297A CN A031143024 A CNA031143024 A CN A031143024A CN 03114302 A CN03114302 A CN 03114302A CN 1540297 A CN1540297 A CN 1540297A
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Abstract
The calibrating apparatus includes calibrating desk composed of multiple water meters, three-way solenoid valve connected to water meters in each column in parallel, volumetric standard in five different volumes, a video camera for each water meter and automatic device of measuring water level connected to the said volumetric standard. Electric cabinet connected to the said automatic device of measuring water level and solenoid valve. The electric cabinet and video cameras are connected to computer electrically. Flux of water meter to be tested is recognized by computer from images of water meters collected by video cameras. The said electric cabinet tests water levels in volumetric standard, and measured data are sent to computer. Finally, after analyzing and calculating, computer creates and prints out recording report of calibrating water meter.
Description
Technical field
The present invention relates to the calibrating installation and the calibration method thereof of liquid flow mearuement device, especially relate to a kind of common water meter automatic calibrator and calibration method thereof.
Background technology
According to the regulation of national measurement verification JJG162-85 " water meter and test unit vertification regulation thereof ", the calibrating water meter will be examined and determine nominal flow rate, boundary flow and three flow points of minimum flow.At present, the calibrating unit of measurement instrument is when the common water meter of calibrating, the testing person needs manual three switching discharges, the water level that six times are read tested watermeter flowing rate and read volumetric standard for six times before and after the naked eyes, and write down these data, calculate various errors, by hand data are imported computing machine so that print probation redport then.The employee will monitor always, controls and write down the operation of calibrating installation in verification process, also to calculate, handle and import data, workload is very big, in addition, rely on manually a large amount of repeatedly reading of data, certainly will cause personal error, therefore, existing detection technique makes that the calibration operation amount is big, labour intensity is high, work efficiency is low, and measuring accuracy is poor.
Summary of the invention
The objective of the invention is to solve that the calibration operation amount is big in the existing detection technique, labour intensity is high, work efficiency is low, and the technical matters of measuring accuracy difference, it is high and be easy to the common water meter automatic calibrator that uses, safeguard to propose a kind of efficient height, measuring accuracy examined and determine.
The technical matters that another object of the present invention will solve provide a kind of easy and simple to handle, labour intensity is low, the automatic calibration method of common water meter accurately and reliably.
The design concept of calibrating installation of the present invention: block the water meter dial plate image that collects by camera and image, machine is handled and is discerned a plurality of by the flow of water gauge as calculated, electric cabinet is measured the water level of volumetric standard, the gained data are sent to computing machine, after analyzing by COMPUTER CALCULATION at last, generate and print water meter calibration record form.
The technical scheme of this calibrating installation is a kind of common water meter automatic calibrator of structure, it comprises the calibrating platform for the treatment of that by many water gauge is formed by connecting, with every row water meter of this calibrating platform and the three-way electromagnetic valve that connects, the volumetric standard that is connected with this solenoid valve with five kinds of volumes, the top of every water meter of described calibrating platform is provided with a camera that is used for water-meter reading pointer image, also comprises the automatic water level measurement mechanism that is communicated with described container, with this measurement mechanism and described solenoid valve be electrically connected respectively in establish the electric cabinet of single-chip microcomputer, the computing machine that is electrically connected with this electric cabinet and described camera.
The described automatic water level measurement mechanism of calibrating installation of the present invention, comprise the glass tube that is communicated with described volumetric standard, be located at the level measuring head that can move along its axis on this glass tube, drive the micromotor that this level measuring head moves, adjustable gauge head of cutting off the water that is connected in described glass tube level measuring head below, described level measuring head, micromotor and the gauge head of cutting off the water are electrically connected with described electric cabinet respectively.
Calibration method of the present invention is as follows:
Connect the power supply of equipment such as computing machine, electric cabinet, open calibrating procedure;
After water meter is installed, regulates camera and make the minimum flow pointer image of water meter be arranged in the picture frame of computing machine correspondence; Regulate each flow point flow of valve, open water drain valve and get rid of the pipeline bubble, close valve and begin to detect;
Input information is as parameters such as flow point, water meter title, numbering, bores;
Picked-up, processing, identification initial water list index, location drawing picture;
Start the solenoid valve water inlet;
Monitor rotation, turn over number, watermeter flowing rate and the record of indicator of water gauge, the real-time traffic of display pointer correspondence by camera picked-up image and by computing machine;
The water level of discrimination standard container if water is not filled with, continues monitoring pointer situation, record real-time traffic etc.; If water is filled with, close solenoid valve;
The examination criteria container water level and the water yield are calculated each water meter measurement error, and whether differentiate water meter qualified, form report datas such as nominal flow rate, boundary flow and minimum flow.
Because current collection of the present invention, image, machinery and computer technology in one, adopt advanced well-designed the forming of components and parts mechanical technology, and be easy and simple to handle, use, easy to maintenance.Use the optoelectronic induction signal, SEA LEVEL VARIATION is quick on the draw, can produce stable water level pulse signal, anti-interference is splendid.Computing machine is taked multiple mathematical algorithm fast, guaranteed pattern recognition real-time and reliability, and eliminate personal error, improved the accuracy of device.Again owing to realized being calculated error automatically and forming printed report after read automatically, the automatically switch flow and the calibrating end of water gauge and volumetric standard flow, the whole realizations of whole process are finished automatically, employee work is able to obvious simplification, and labour intensity reduces, and work efficiency improves greatly.
Description of drawings
The present invention is further illustrated below in conjunction with drawings and Examples, wherein:
Fig. 1 is the structured flowchart of calibrating installation of the present invention;
Fig. 2 is the structural representation of automatic water level measurement mechanism among Fig. 1;
Fig. 3 is the FB(flow block) of water meter identification calibrating procedure in the calibration method of the present invention.
Embodiment
As shown in Figure 1, be the structured flowchart of calibrating installation preferred embodiment of the present invention.Calibrating installation shown in the figure, comprise in two separate ranks and connect the calibrating platform 1 that forms by 12 20 millimeters common wet type cold water meters to be checked, also can be that 12 water meters, one row serial connection forms, this calibrating platform can be installed common dried, the wet type cold water meter of calibrating 15-25 millimeter bore, can also be provided with the rotating drive platform of measuring dry-type meter on the calibrating platform.Overlap volumetric standards 3 (10 road water levels altogether) with every row water meter and 3 way solenoid valves 2 of examining and determine nominal flow rate, boundary flow and minimum flow respectively (two row have 6 way solenoid valves) that connect, two of the five kinds of volumes that have that are connected with 6 way solenoid valves, five kinds of volumes of this volumetric standard 3 are respectively 5 liters, 10 liters, 20 liters, 50 liters and 100 liters.The top of every water meter of described calibrating platform 1 is provided with a camera 4, and this camera is located on adjustable framework, and this framework also is provided with light source and bucker.Calibrating installation of the present invention also comprise the automatic water level measurement mechanism 5 that is communicated with described container 3, with this measurement mechanism and described solenoid valve 2 be electrically connected respectively in establish the electric cabinet 6 of single-chip microcomputer, the computing machine 7 that is electrically connected with this electric cabinet and described camera 4.
As shown in Figure 2, be the structural representation of automatic water level measurement mechanism.Described automatic water level measurement mechanism 5, comprise the glass tube 8 that is communicated with described volumetric standard 3, be located at the level measuring head 9 that can move along its axis on this glass tube, drive the micromotor 10 that this level measuring head moves, adjustable gauge head 11 of cutting off the water that is connected in described glass tube level measuring head 9 belows, described level measuring head 9, micromotor 10 and the gauge head 11 of cutting off the water are electrically connected with described electric cabinet 6 respectively.Level measuring head 9 in the above-mentioned automatic water level measurement mechanism is a photoelectric measuring head, its normal position is in the water level below of glass tube 8, when water level stop and delaying time wait for the glass tube stable level after, micromotor 10 begins upwards operation, drive upwards operation of photoelectric measuring head 9, photometer head sends continuous impulse and is received and counting by the single-chip microcomputer of being located in the electric cabinet 6.When measuring head runs to the water level surface, the light signal saltus step produces pulse signal, is received and is stopped counting by single-chip microcomputer, and control micromotor inverted running is to initial position, and single-chip microcomputer transmission pulse data is converted into actual amount of water to computing machine 7 then.The described gauge head 11 of cutting off the water also is according to the photoelectricity transforming principle, produces the water level pulse signal and sends electric cabinet to, and single-chip microcomputer receives back control electromagnetic valve 2 switches or time-delay etc. in it.Be provided with the very corresponding program of hard real-time and anti-interference in described electric cabinet 6 single-chip microcomputers, can realize the reception and the processing of multiple signals, promptly can realize the real-time detection and the measurement of 10 road water levels, and can control the switch of 6 road inlet valves.Can also realize that with the serial communication between computing machine RS232 the steering order that reception and process computer are sent sends corresponding signal and measurement data etc. to computing machine.
Described computing machine 7 is for having disposed the computing machine of high-capacity and high-speed internal memory P4/2.0, be provided with three professional video image pick-up cards in it, described camera 4 is directly inputted to image pick-up card with the vision signal of 12 road water meter images, and computing machine adopts the calibrating function software of powerful VC++6.0 establishment, gather water meter image (amount to 12 road picture intelligences) in real time to high-speed internal memory in order to control three image collection cards, its speed can reach per second and gather more than visual 100 width of cloth; Methods such as computing machine adopts multiple mathematical method such as greyscale transformation, Boundary Detection, pointer figure coupling, hits miss, color transformed, noise spot filtration, angular transformation, the establishment of these mathematical methods is multiple fast algorithm C programmer, from pictorial data, identifies pointer and pointer position and bubble in the wet-type meter and bubble are got rid of by calculating; Can also realize the RS232 serial communication of computing machine with electric cabinet, by electric cabinet finish water flowing, cut off the water, function such as measurement; Can also realize examining and determine automatic storage, management and the printing of data.
As shown in Figure 3, discern the FB(flow block) of calibrating procedure for water meter in the calibration method of the present invention.
Calibration method of the present invention is performed such:
At first connect the power supply of equipment such as computing machine, electric cabinet, clickable icon is opened calibrating procedure;
After water meter is installed, regulates camera and make the minimum flow pointer image of water meter be arranged in the picture frame of computing machine correspondence; Regulate each flow point flow of valve, open water drain valve and get rid of the pipeline bubble, valve-off begins to detect;
Input is (project that will examine and determine, water meter parameter) for information about, as parameters such as flow point, water meter title, numbering, bore, censorship units;
Computing machine begins automatic detection, comprises that picked-up water meter image disturbs, discerns pointer shape and start position to region of memory, filtering bubble, water smoke etc.;
Electric cabinet starts the solenoid valve water inlet automatically;
Whether the rotation of computer monitoring pointer, watermeter flowing rate stable, judge pointer turn over number and record, the real-time traffic of display pointer correspondence;
The water level of computer discriminant relevant criterion container if water is not filled with, continues monitoring pointer situation, record real-time traffic etc., if water has been filled with, the instruction electric cabinet is closed solenoid valve;
The electric cabinet examination criteria container water level and the water yield, the error in dipping of each water meter of COMPUTER CALCULATION, and whether differentiation is qualified by water gauge, forms report datas and demonstration, modification, inquiries such as nominal flow rate, boundary flow and minimum flow, stores or print.
Prove through a large amount of tests, adopt technology of the present invention, can measure 10 road water levels automatically, control 6 road entering water electromagnetic valve doors automatically; The image reliability of identification detection automatically reaches 300 data of average follow-on test, 1 pattern recognition error just occurs and exceed 1/3 water meter minimum division value, be that the pattern recognition precision reaches 1/3 water meter minimum division value, meet national regulation and allow 1/2 minimum division value; Volumetric standard level measuring precision reaches 1/5 minimum scale value, can reduce personal error more than 90%, meets gage work notarization property, accuracy aim.The calibrating of 12 water meters of prior art manually-operated, record need about 36 minutes altogether, and the present invention detect overall process automatically only need about 23-24 minute, can finish original two people's workload by a people, visible staff labor intensity reduces, work efficiency greatly improves.
Claims (7)
1, a kind of common water meter automatic calibrator, comprise the calibrating platform (1) for the treatment of that by many water gauge is formed by connecting, with this calibrating platform and the three-way electromagnetic valve (2) that connects, the volumetric standard with five kinds of volumes (3) that is connected with this solenoid valve, it is characterized in that, the top of every water meter of described calibrating platform (1) is provided with a camera (4) that is used for water-meter reading pointer image, also comprises the automatic water level measurement mechanism (5) that is communicated with described volumetric standard (3), with this measurement mechanism and described solenoid valve (2) be electrically connected respectively in establish the electric cabinet (6) of single-chip microcomputer, the computing machine (7) that is electrically connected with this electric cabinet and described camera (4).
2, according to the described calibrating installation of claim 1, it is characterized in that, described automatic water level measurement mechanism (5), comprise the glass tube (8) that is communicated with described volumetric standard (3), be located at the level measuring head (9) that can move along its axis on this glass tube, drive micromotor (10), adjustable gauge head of cutting off the water (11) that is connected in level measuring head (9) below on the described glass tube that this level measuring head moves, described level measuring head (9), micromotor (10) and the gauge head of cutting off the water (11) are electrically connected with described electric cabinet (6) respectively.
According to the described calibrating installation of claim 2, it is characterized in that 3, described computing machine (7) is the special software that has disposed the computing machine of high-capacity and high-speed internal memory P4/2.0 and be used for pattern recognition, is provided with three professional video image pick-up cards in this computing machine.
4, according to the described calibrating installation of claim 3, it is characterized in that, treat that water gauge is that 12 water meters, one row serial connection forms for many on the described calibrating platform (1).
5, according to the described calibrating installation of claim 3, it is characterized in that, on the described calibrating platform (1) many treat water gauge be 12 water meters in two separate ranks and connect and form, every tubulation road respectively and connect three described solenoid valves (2), this solenoid valve also connects described volumetric standard (3) with five kinds of volumes.
According to claim 4 or 5 described calibrating installations, it is characterized in that 6, described five kinds of volumes with volumetric standard (3) of five kinds of volumes are respectively 5 liters, 10 liters, 20 liters, 50 liters and 100 liters.
7, a kind of calibration method of using the described calibrating installation of claim 1, the step of this method is as follows:
The power supply of equipment such as a, connection computing machine, electric cabinet is opened calibrating procedure;
Behind b, the installation water meter, regulate camera and make the minimum flow pointer image of water meter be arranged in the picture frame of computing machine correspondence; Regulate each flow point flow of valve, open water drain valve and get rid of the pipeline bubble, close valve and begin to detect;
C, input information are as parameters such as flow point, water meter title, numbering, bores;
D, picked-up, processing, identification indicator of water gauge and location drawing picture;
E, the water inlet of startup solenoid valve;
F, by camera picked-up image and monitor the real-time traffic of rotation, turn over number, watermeter flowing rate and the record display pointer correspondence of indicator of water gauge by computing machine;
The water level of g, discrimination standard container if water is not filled with, returns step f, if water is filled with, closes solenoid valve;
H, examination criteria container water level and the water yield are calculated each water meter measurement error, and whether differentiate water meter qualified, form report data.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA031143024A CN1540297A (en) | 2003-04-22 | 2003-04-22 | Automatic calibrating apparatus and calibrating method for ordinary water meter |
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| CNA031143024A CN1540297A (en) | 2003-04-22 | 2003-04-22 | Automatic calibrating apparatus and calibrating method for ordinary water meter |
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| CNA031143024A Pending CN1540297A (en) | 2003-04-22 | 2003-04-22 | Automatic calibrating apparatus and calibrating method for ordinary water meter |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368782C (en) * | 2005-12-28 | 2008-02-13 | 张祖明 | Flow standard measuring apparatus by photographic technique |
| CN101561309B (en) * | 2009-05-31 | 2010-11-03 | 常州市计量测试技术研究所 | Online measurement device and measurement method thereof for pipeline flux instrument |
| CN102353427A (en) * | 2011-06-23 | 2012-02-15 | 浙江甬岭供水设备有限公司 | Detection device for metrological characteristics of water meter and detection method for using same |
| CN102353428A (en) * | 2011-06-23 | 2012-02-15 | 浙江甬岭供水设备有限公司 | Detection device for metrological characteristics of water meter and detection method for using same |
| CN102680060A (en) * | 2012-06-01 | 2012-09-19 | 江南大学 | Method for automatically detecting metrological characteristics of water meter based on image recognition |
| CN103542905A (en) * | 2013-10-23 | 2014-01-29 | 福建省计量科学研究院 | Water meter flow identifying method |
| CN103954334A (en) * | 2014-04-28 | 2014-07-30 | 华中师范大学 | Fully automatic image pickup type water meter verification system and operating method thereof |
| CN103957380A (en) * | 2014-04-15 | 2014-07-30 | 镇江市计量检定测试中心 | Information extracting device of measuring instrument testing device display interface |
| CN103983319A (en) * | 2014-05-26 | 2014-08-13 | 中国铁道科学研究院 | Volume traceability system based liquid inlet and outlet device and method |
| CN105260710A (en) * | 2015-09-28 | 2016-01-20 | 北京石油化工学院 | Water meter detecting method, apparatus, and system based on image processing |
| CN105300482A (en) * | 2015-09-28 | 2016-02-03 | 北京石油化工学院 | Water meter calibration method, apparatus and system based on image processing |
| CN105588620A (en) * | 2015-12-13 | 2016-05-18 | 北京工业大学 | Internet-of-things water meter calibration system |
| CN106052812A (en) * | 2016-08-15 | 2016-10-26 | 安徽翼迈科技股份有限公司 | Watermeter detection equipment |
| CN106101633A (en) * | 2016-01-27 | 2016-11-09 | 山东厚德测控技术有限公司 | A kind of water meter gear real-time identifying system based on high-speed camera and method |
| CN106768210A (en) * | 2017-03-03 | 2017-05-31 | 郑州工业应用技术学院 | A kind of electromechanical synchronization detecting system of mechanical remote transmitting water meter |
| CN107990963A (en) * | 2018-01-19 | 2018-05-04 | 中国计量大学 | A kind of syringe pump flow calibrating device and calibration method |
| CN108593864A (en) * | 2018-03-30 | 2018-09-28 | 山西省计量科学研究院 | Remote calibration device for water quality on-line detector |
| CN108759989A (en) * | 2018-05-22 | 2018-11-06 | 江苏金钰铭电子有限公司 | A kind of camera shooting type deflection angle recognition methods and device |
| CN109632055A (en) * | 2019-01-16 | 2019-04-16 | 杭州丹纳计量科技有限公司 | A kind of mechanical water meter dynamic vision measurement method based on intelligent terminal |
| CN109781216A (en) * | 2019-01-26 | 2019-05-21 | 江苏金钰铭电子有限公司 | A kind of water meter water-level high precision measurement method |
| CN111879377A (en) * | 2020-07-24 | 2020-11-03 | 广州能源检测研究院 | Standard metal measuring device capacity calibration result compensation method considering bubble discharge capacity |
| CN111982247A (en) * | 2020-08-13 | 2020-11-24 | 河南省计量科学研究院 | Device and method for realizing water meter detection based on improved Hough transformation algorithm |
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2003
- 2003-04-22 CN CNA031143024A patent/CN1540297A/en active Pending
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368782C (en) * | 2005-12-28 | 2008-02-13 | 张祖明 | Flow standard measuring apparatus by photographic technique |
| CN101561309B (en) * | 2009-05-31 | 2010-11-03 | 常州市计量测试技术研究所 | Online measurement device and measurement method thereof for pipeline flux instrument |
| CN102353427B (en) * | 2011-06-23 | 2014-04-02 | 温岭甬岭水表有限公司 | Detection device for metrological characteristics of water meter and detection method for using same |
| CN102353427A (en) * | 2011-06-23 | 2012-02-15 | 浙江甬岭供水设备有限公司 | Detection device for metrological characteristics of water meter and detection method for using same |
| CN102353428A (en) * | 2011-06-23 | 2012-02-15 | 浙江甬岭供水设备有限公司 | Detection device for metrological characteristics of water meter and detection method for using same |
| CN102680060A (en) * | 2012-06-01 | 2012-09-19 | 江南大学 | Method for automatically detecting metrological characteristics of water meter based on image recognition |
| CN103542905B (en) * | 2013-10-23 | 2016-03-30 | 福建省计量科学研究院 | A kind of watermeter flowing rate recognition methods |
| CN103542905A (en) * | 2013-10-23 | 2014-01-29 | 福建省计量科学研究院 | Water meter flow identifying method |
| CN103957380A (en) * | 2014-04-15 | 2014-07-30 | 镇江市计量检定测试中心 | Information extracting device of measuring instrument testing device display interface |
| CN103954334A (en) * | 2014-04-28 | 2014-07-30 | 华中师范大学 | Fully automatic image pickup type water meter verification system and operating method thereof |
| CN103954334B (en) * | 2014-04-28 | 2017-02-01 | 华中师范大学 | Fully automatic image pickup type water meter verification system and operating method thereof |
| CN103983319A (en) * | 2014-05-26 | 2014-08-13 | 中国铁道科学研究院 | Volume traceability system based liquid inlet and outlet device and method |
| CN105260710A (en) * | 2015-09-28 | 2016-01-20 | 北京石油化工学院 | Water meter detecting method, apparatus, and system based on image processing |
| CN105300482A (en) * | 2015-09-28 | 2016-02-03 | 北京石油化工学院 | Water meter calibration method, apparatus and system based on image processing |
| CN105300482B (en) * | 2015-09-28 | 2018-08-10 | 北京石油化工学院 | Water meter calibration method, apparatus based on image procossing and system |
| CN105260710B (en) * | 2015-09-28 | 2018-08-28 | 北京石油化工学院 | Water meter calibration method, apparatus based on image procossing and system |
| CN105588620A (en) * | 2015-12-13 | 2016-05-18 | 北京工业大学 | Internet-of-things water meter calibration system |
| CN106101633A (en) * | 2016-01-27 | 2016-11-09 | 山东厚德测控技术有限公司 | A kind of water meter gear real-time identifying system based on high-speed camera and method |
| CN106101633B (en) * | 2016-01-27 | 2019-01-08 | 山东厚德测控技术有限公司 | A kind of water meter gear real-time identifying system and method based on high-speed camera |
| CN106052812A (en) * | 2016-08-15 | 2016-10-26 | 安徽翼迈科技股份有限公司 | Watermeter detection equipment |
| CN106768210A (en) * | 2017-03-03 | 2017-05-31 | 郑州工业应用技术学院 | A kind of electromechanical synchronization detecting system of mechanical remote transmitting water meter |
| CN106768210B (en) * | 2017-03-03 | 2019-12-31 | 郑州工业应用技术学院 | Electromechanical synchronous detection system for mechanical remote water meter |
| CN107990963A (en) * | 2018-01-19 | 2018-05-04 | 中国计量大学 | A kind of syringe pump flow calibrating device and calibration method |
| CN108593864A (en) * | 2018-03-30 | 2018-09-28 | 山西省计量科学研究院 | Remote calibration device for water quality on-line detector |
| CN108759989A (en) * | 2018-05-22 | 2018-11-06 | 江苏金钰铭电子有限公司 | A kind of camera shooting type deflection angle recognition methods and device |
| CN109632055A (en) * | 2019-01-16 | 2019-04-16 | 杭州丹纳计量科技有限公司 | A kind of mechanical water meter dynamic vision measurement method based on intelligent terminal |
| CN109781216A (en) * | 2019-01-26 | 2019-05-21 | 江苏金钰铭电子有限公司 | A kind of water meter water-level high precision measurement method |
| CN111879377A (en) * | 2020-07-24 | 2020-11-03 | 广州能源检测研究院 | Standard metal measuring device capacity calibration result compensation method considering bubble discharge capacity |
| CN111982247A (en) * | 2020-08-13 | 2020-11-24 | 河南省计量科学研究院 | Device and method for realizing water meter detection based on improved Hough transformation algorithm |
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