WO2006068332A1 - Converting method from mechanical counter to digital signal for mechanical type utility meter - Google Patents

Converting method from mechanical counter to digital signal for mechanical type utility meter Download PDF

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Publication number
WO2006068332A1
WO2006068332A1 PCT/KR2004/003231 KR2004003231W WO2006068332A1 WO 2006068332 A1 WO2006068332 A1 WO 2006068332A1 KR 2004003231 W KR2004003231 W KR 2004003231W WO 2006068332 A1 WO2006068332 A1 WO 2006068332A1
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WO
WIPO (PCT)
Prior art keywords
indicator
light
mechanical
detector
utility meter
Prior art date
Application number
PCT/KR2004/003231
Other languages
French (fr)
Inventor
Kyung Kuen Jung
Sang Shin Lee
Original Assignee
Kyung Kuen Jung
Sang Shin Lee
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyung Kuen Jung, Sang Shin Lee filed Critical Kyung Kuen Jung
Publication of WO2006068332A1 publication Critical patent/WO2006068332A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
    • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
    • G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/02—Constructional details
    • G01R11/16—Adaptations of counters to electricity meters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D4/00—Tariff metering apparatus
    • G01D4/002—Remote reading of utility meters
    • G01D4/004—Remote reading of utility meters to a fixed location
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/06—Indicating or recording devices
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/30—Smart metering, e.g. specially adapted for remote reading

Definitions

  • Embodiments of the present invention relate to converting mechanical utility meter data to digital signal for remote electronic inspection while using proven mechanical utility meter device in place.
  • Object of embodiments of this invention is to address problems listed above. It is about the method of digital data conversion of mechanical meter indicator by putting light emitters and sensors at the exterior of the meter without damaging the inspection seal.
  • An optical sensor apparatus comprising light emitter and reflected light detector, is attached to the last digit of the mechanical utility meter indicator numbers.
  • light detector picks up alterations in the intensity of the light reflected on the numerical indicator surface. Therefore, by analysing these alterations in the reflected light intensity, it is possible to identify the number in the indicator surface and the number of turns the indicator made so far.
  • Embodiments of the present invention incorporates digital data conversion method with proven, already-installed mechanical meters for maximum reliability and efficiency.
  • optical sensor apparatus placed at the frontal cover the utility meter, facing the last digit of the numerical indicator numbers.
  • Light emitter transmits light signal to the indicator surface and detector picks up the reflected light signal.
  • Revolutions of the indicator can be determined by linearly tracing vertical movement of a certain point of the indicator surface and counting numbers of the light "pulses' generated by the detector converting reflected light intensity alterations into high and low pulses. Though number of pulses may vary according to the font of indicator numbers or tracing point, this problem can be solved by manually inputting number of pulses needed for given utility meter indicator to make one turn.
  • FIG. 1 shows a perspective view of an optical sensor apparatus attached to a mechanical utility meter.
  • FIG. 1 shows a mechanical electricity meter with 4-digit indicator(101). Revolving indicator itself is not depicted in FIG. 1. Also shown in FIG. 1 is a reflected light detector(102) attached to a mechanical electricity meter, facing the last digit of the 4-digit indicator number(101). Collected data is then transmitted via cable(103).
  • FIG. 2 is an example of typical revolving indicator(101) for mechanical utility meter.
  • FIG. 2 shows a 4-digit indicator which has 4 cylinders with numbers from 0 to 9 printed at same intervals.
  • One at the far right is the last figure of the indicator, usually representing unit's place. Cylinder at second from right indicates ten's place, cylinder at third from right indicates hundred's place and cylinder at the far left indicates thousand's place.
  • Neighboring cylinders have 10:1 gear ratio, meaning that 10 turns by the unit's place cylinder will make ten's place cylinder to move by click. Likely, 10 turns by the ten's place cylinder will make one click in a hundred's place cylinder and 10 turns by the hundred's place cylinder will make one click in a thousand's place cylinder.
  • FIG. 3 is an example of a cylindrical indicator with numbers from 0 to 9 printed at same intervals.
  • FIG. 4 shows numbers printed on a cylindrical indicator with an imaginary linear trace line at the middle.
  • FIG. 5 is a example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line A on numbers(0 ⁇ 9) of a cylindrical indicator.
  • FIG. 6 is a modified example of FIG. 4. FiG. 6 shows three linear trace lines instead of one.
  • FIG. 7 is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line B of the FIG. 6.
  • FiG. 8 is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line C of the FIG. 6.
  • FIG. ⁇ is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line D of the FIG. 6.
  • Converting method of from mechanical counter to digital signal for mechanical utility meter is useful in a sense that it enables easy digital remote inspection of utility meters by simply attaching required apparatus of the exterior of a utility meter without damaging inspection seal.
  • FIG. 1 is an exemplified drawing of an optical sensor apparatus attached to a mechanical utility meter.
  • FIG. 2 is an example of revolving cylindrical indicator for mechanical utility meter.
  • FIG. 3 is an example of a cylindrical indicator with numbers from 0 to 9 printed at same intervals.
  • FIG. 4 shows numbers printed on a cylindrical indicator with an imaginary linear trace line at the middle.
  • FIG. 5 is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line A on numbers(0 ⁇ 9) of a cylindrical indicator.
  • FIG. 6 is a modified example of FiG. 4.
  • FIG. 6 shows three linear trace lines instead of one.
  • FIG. 7 is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line B of the FIG. 6.
  • FIG. 8 is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line C of the FIG. 6.
  • FIG. 9 is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line D of the FIG. 6.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measuring Volume Flow (AREA)

Abstract

A method of digital data conversion of a mechanical utility meter which enables remote electronic inspection while using existing mechanical utility meters. Sensor apparatus comprising light emitter and reflected light detector is attached to the exterior of a mechanical utility meter, facing the last digit of the indicator numbers. Light emitter transmits light to the indicator surface and detector receives reflected light signal. Revolutions of the indicator can be determined by linear tracing vertical movement of a certain point of the indicator surface and counting numbers of the light 'pulses' generated by the detector converting reflected light intensity alterations into high and low pulses.

Description

STATEMENT
Converting Method from Mechanical Counter to Digital Signal for Mechanical Type Utility Meter
Technical Description
1. Embodiments of the present invention relate to converting mechanical utility meter data to digital signal for remote electronic inspection while using proven mechanical utility meter device in place.
2. So far, mechanical meters have been universally used in water, electricity and gas meters because of their stability in preserving data even when damaged by external shock. However as information technology spread through social infrastructure, remote electronic inspection of utility meters became an unavoidable trend. Remote electronic inspection is a system that incorporates electronic reader or short range wireless communication device which eliminates the need of service personnel to approach the meter. Also, by using electronic inspection system, it is no longer necessary to bring collected data to the office for input or to maintain cumbersome account books to keep records. Everything from collecting data to issuing bills is done automatically through periodic communication between utility meters and inspection center.
3. One prerequisite condition for remote electronic inspection is digitization of utility meter indicator. Of course, this problem can be addressed rather easily by using digital meters. However, digital utility meters are not as popular as mechanical ones since they have several drawbacks compared with mechanical meters. First, digital meters are more expensive than mechanical meters. Second, they are prone to malfunction when exposed to excessive electric current or unusually high voltage. Sometimes this can result in data loss. Also, it is hard to read digital meters or preserve data in them once they are damaged by physical shock. On the other hand, mechanical meters have one distinctive advantage over digital meters. Mechanical meters can preserve data even when they are struck by excessive electric current, unusually high voltage or physical shock. Another problem with digital meters is their unproven durability. Digital meter is a relatively new device. It had little time to prove reliability of composing elements. As seasons change and parts get older, it is possible that someday we may notice deviation in digital meters have increased to unacceptable level.
4. Until now, remote electronic inspection is accomplished by installing digital meters i and communication wires at the very early stage of building construction or, in case of already established buildings, replacing existing mechanical meters with digital meters.
5. At past, several local administration in Korea planned to install remote electronic inspection system for their water supply lines using simple image sensing technology. It was a system incorporation digital camera, transmitter and computer image processor. The system uses digital camera to take pictures of sweep hand indicator. Then the image is sent to computer via transmitting device to extract indicator numbers through image analysis. The problem with this system was budget. The system needed digital camera and transmitting device for every operational utility meters. Moreover, maintenance and communication costs were so high that the plan was abandoned in the end. Nowadays we can hardly find any remote electronic inspection system involving such technology.
6. A method converting revolutions of indicator plate in mechanical meters to a certain form of pulses is developed for watt hour meters. There are already several patents concerning this technology: "Remote inspection methods and devices"(ROK patent Teuk2001 -0079408, 22 August, 2001 , Application No. 10-2001-0042194); "Remote inspection device for watt-hour meter"(ROK patent 20-0278950, 5 June, 2002, Application No. 20-2002-0008433); "Revolution counting device for mechanical watt-hour meter"(ROK patent 20-0343443, Application No. 20-2003-0036277).
7. However, it is impossible to apply these methods to mechanical water meter or gas meter since these meters do not have revolving plates whose revolutions can be counted. This is why digital data processing is still not introduced to water or gas meters.
Detailed Explanation of the Invention
Technical challenges
8. Object of embodiments of this invention is to address problems listed above. It is about the method of digital data conversion of mechanical meter indicator by putting light emitters and sensors at the exterior of the meter without damaging the inspection seal.
9. An optical sensor apparatus, comprising light emitter and reflected light detector, is attached to the last digit of the mechanical utility meter indicator numbers. When the number on the indicator changes, light detector picks up alterations in the intensity of the light reflected on the numerical indicator surface. Therefore, by analysing these alterations in the reflected light intensity, it is possible to identify the number in the indicator surface and the number of turns the indicator made so far.
Solutions
10. Embodiments of the present invention incorporates digital data conversion method with proven, already-installed mechanical meters for maximum reliability and efficiency.
11. It is an object of the present invention to place optical sensor apparatus at the frontal cover the utility meter, facing the last digit of the numerical indicator numbers. Light emitter transmits light signal to the indicator surface and detector picks up the reflected light signal. Revolutions of the indicator can be determined by linearly tracing vertical movement of a certain point of the indicator surface and counting numbers of the light "pulses' generated by the detector converting reflected light intensity alterations into high and low pulses. Though number of pulses may vary according to the font of indicator numbers or tracing point, this problem can be solved by manually inputting number of pulses needed for given utility meter indicator to make one turn.
12. A detailed description of embodiments of the invention will be made with reference to the accompanying drawings.
13.
14. FIG. 1 shows a perspective view of an optical sensor apparatus attached to a mechanical utility meter.
15. Mechanical electricity meter(100) uses revolving indicator to display amount of electricity used. FIG. 1 shows a mechanical electricity meter with 4-digit indicator(101). Revolving indicator itself is not depicted in FIG. 1. Also shown in FIG. 1 is a reflected light detector(102) attached to a mechanical electricity meter, facing the last digit of the 4-digit indicator number(101). Collected data is then transmitted via cable(103).
16.
17. FIG. 2 is an example of typical revolving indicator(101) for mechanical utility meter.
18. FIG. 2 shows a 4-digit indicator which has 4 cylinders with numbers from 0 to 9 printed at same intervals. One at the far right is the last figure of the indicator, usually representing unit's place. Cylinder at second from right indicates ten's place, cylinder at third from right indicates hundred's place and cylinder at the far left indicates thousand's place.
19. All four cylindrical indicators are connected to each other by gears. Neighboring cylinders have 10:1 gear ratio, meaning that 10 turns by the unit's place cylinder will make ten's place cylinder to move by click. Likely, 10 turns by the ten's place cylinder will make one click in a hundred's place cylinder and 10 turns by the hundred's place cylinder will make one click in a thousand's place cylinder.
20.
21. FIG. 3 is an example of a cylindrical indicator with numbers from 0 to 9 printed at same intervals.
22.
23. FIG. 4 shows numbers printed on a cylindrical indicator with an imaginary linear trace line at the middle.
24. If we scan the indicator at one particular point, the numbers on the cylindrical indicator will appear as if they are lined up in a plane surface as shown in the FIG. 4.
25.
26. FIG. 5 is a example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line A on numbers(0~9) of a cylindrical indicator.
27. As the cylindrical indicator revolves, number "1" generates first pulse, "2" generates second, third, fourth pulse, "3" generates fifth, sixth and seventh pulse, "4" generates eighth, ninth pulse, "5" generates tenth, eleventh and twelfth pulse, "6" generates thirteenth, fourteenth and fifteenth pulse, "7" generates sixteenth, seventeenth pulse, "8" generates eighteenth, nineteenth and twentieth pulse, "9" generates twenty first, twenty second and twenty third pulse, and finally, "0" generates twenty fourth and twenty fifth pulse.
28.
29. FIG. 6 is a modified example of FIG. 4. FiG. 6 shows three linear trace lines instead of one.
30.
31. FIG. 7 is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line B of the FIG. 6.
32.
33. FiG. 8 is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line C of the FIG. 6.
34.
35. FIG. θ is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line D of the FIG. 6.
36.
37. As shown in the Figures 6 through 9, it is possible to determine current position of indicator cylinders by tracing linear movements of the cylinder at more than two points and associating the result with pulse generation timings. In this way, it is possible to determine positions of all indicators in a mechanical utility meter.
38.
39. The theory of detecting revolutions of mechanical utility meter indicators using light emitter and reflected light detector is already patented and publicized by ROK patent office so it is not necessary to repeat the theory in this claim.
Profits of the invention
40. Converting method of from mechanical counter to digital signal for mechanical utility meter is useful in a sense that it enables easy digital remote inspection of utility meters by simply attaching required apparatus of the exterior of a utility meter without damaging inspection seal.
41.
Brief Description of the Drawings 42. FIG. 1 is an exemplified drawing of an optical sensor apparatus attached to a mechanical utility meter.
43. FIG. 2 is an example of revolving cylindrical indicator for mechanical utility meter.
44. FIG. 3 is an example of a cylindrical indicator with numbers from 0 to 9 printed at same intervals.
45. FIG. 4 shows numbers printed on a cylindrical indicator with an imaginary linear trace line at the middle.
46. FIG. 5 is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line A on numbers(0~9) of a cylindrical indicator.
47. FIG. 6 is a modified example of FiG. 4. FIG. 6 shows three linear trace lines instead of one.
48. FIG. 7 is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line B of the FIG. 6.
49. FIG. 8 is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line C of the FIG. 6.
50. FIG. 9 is an example of pulses generated by the detector according to the change of the intensity of reflected light along the linear trace line D of the FIG. 6.
51.

Claims

CLAIMSWhat is claimed is:
1. A method of digital data conversion of a mechanical utility meter which enables remote electronic inspection while using existing mechanical utility meters. The method comprising the steps of:
attaching a sensor apparatus comprising light emitter and detector to the exterior of a mechanical utility meter, facing the last digit of the indicator numbers: and
light emitter transmitting light signal to the indicator surface and detector picking up the reflected light signal:
light detector determining revolutions of the indicator by tracing vertical movement of a certain point of the indicator surface and counting numbers of the light 'pulse' generated by the detector converting reflected light intensity alterations into high and low pulses:
thereby converting mechanical utility meter readout to digital data.
2. A method as defined in claim 1 , wherein said step of attaching a sensor apparatus, comprises 2 or 3 light emitters and 2 or 3 reflected light detectors.
A method as defined in claim 1 , wherein said step of light detector determining revolutions of the indicator, comprises 2 or 3 detectors linearly tracing revolutions of the indicator surface and counting numbers of the light 'pulse' generated by the detector converting reflected light intensity alterations into high and low pulses.
PCT/KR2004/003231 2004-11-23 2004-12-09 Converting method from mechanical counter to digital signal for mechanical type utility meter WO2006068332A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040096287A KR100737052B1 (en) 2004-11-23 2004-11-23 Converting method from mechanical counter to digital signal for mechanical type utility meter
KR10-2004-0096287 2004-11-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104157078A (en) * 2014-08-07 2014-11-19 河北省水利科学研究院 IC card water meter metering device based on image discrimination
CN110211361A (en) * 2019-07-03 2019-09-06 安徽大学 A kind of self-service meter register method of domestic gas and its self-service kilowatt meter recorder
CN111340018A (en) * 2020-05-18 2020-06-26 南昌冠东科技有限公司 Meter reading system and method using sensor
GB2620020A (en) * 2022-06-13 2023-12-27 Deer Tech Limited A device for a utility meter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200449320Y1 (en) * 2008-01-25 2010-06-30 주안 인-티엔 Meter reading system

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KR20040017989A (en) * 2002-08-23 2004-03-02 주식회사 블루맥스 커뮤니케이션 A meter, wireless automatic meter reading system and method
KR20040087637A (en) * 2003-04-07 2004-10-15 주식회사 블루맥스 커뮤니케이션 AMR terminals and AMR system using thereof

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KR940001738B1 (en) * 1991-12-26 1994-03-05 주식회사 금성사 Bar code reading control method and apparatus in bar code system
KR20010000539A (en) * 2000-10-05 2001-01-05 이재선 An remote checking system using live power line
KR200343443Y1 (en) 2003-11-20 2004-03-02 야베스텍 주식회사 Rotation Counter for Rotational Disk of Watthour Meter

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Publication number Priority date Publication date Assignee Title
KR20040017989A (en) * 2002-08-23 2004-03-02 주식회사 블루맥스 커뮤니케이션 A meter, wireless automatic meter reading system and method
KR20040087637A (en) * 2003-04-07 2004-10-15 주식회사 블루맥스 커뮤니케이션 AMR terminals and AMR system using thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104157078A (en) * 2014-08-07 2014-11-19 河北省水利科学研究院 IC card water meter metering device based on image discrimination
CN110211361A (en) * 2019-07-03 2019-09-06 安徽大学 A kind of self-service meter register method of domestic gas and its self-service kilowatt meter recorder
CN111340018A (en) * 2020-05-18 2020-06-26 南昌冠东科技有限公司 Meter reading system and method using sensor
CN111340018B (en) * 2020-05-18 2020-09-04 安徽东寻信息科技有限公司 Meter reading system and method using sensor
GB2620020A (en) * 2022-06-13 2023-12-27 Deer Tech Limited A device for a utility meter

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KR100737052B1 (en) 2007-07-09

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