WO2001055682A1 - Procédé et équipement permettant de surveiller un compteur de consommation - Google Patents

Procédé et équipement permettant de surveiller un compteur de consommation Download PDF

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Publication number
WO2001055682A1
WO2001055682A1 PCT/DK2001/000046 DK0100046W WO0155682A1 WO 2001055682 A1 WO2001055682 A1 WO 2001055682A1 DK 0100046 W DK0100046 W DK 0100046W WO 0155682 A1 WO0155682 A1 WO 0155682A1
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WO
WIPO (PCT)
Prior art keywords
meter
light
pane
detecting means
equipment
Prior art date
Application number
PCT/DK2001/000046
Other languages
English (en)
Inventor
Peter Malle Andersen
Original Assignee
Peter Malle Andersen
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 Peter Malle Andersen filed Critical Peter Malle Andersen
Priority to AU26660/01A priority Critical patent/AU2666001A/en
Publication of WO2001055682A1 publication Critical patent/WO2001055682A1/fr

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Classifications

    • 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
    • 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
    • G01D4/008—Modifications to installed utility meters to enable remote reading
    • 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
    • G01F15/068—Indicating or recording devices with electrical means
    • 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

  • the present invention relates firstly to a method for monitoring an existing supply meter, such as a water meter, where a visible, movable part in the meter is illum- inated through a pane or the like in the meter, and the movement of the part is continuously detected by means of a light being reflected from the part and captured outside the pane, and where a preferably electric signal is created dependent on the movement of the part, by which method no intervention is made in the meter or the pane.
  • an existing supply meter such as a water meter
  • the invention relates to a piece of equipment for monitoring a supply meter, such as a water meter, the equipment having illuminating means for illuminating a visible, movable part in the meter, light detecting means for detecting light reflected from the part out through a pane or the like in the meter, and analysis means for detecting movement of the part and for creating a preferably electric signal in the case of such movement, where the illuminating means and light detecting means are meant to be placed outside the casing of the meter without any intervention being required in the meter or the pane.
  • one need among others is to provide a piece of equipment for monitoring the mains or network in order to detect leakage of liquid or gas from the system in question.
  • Water meters with built-in pulse sensor for remote reading of the consumption are known and marketed.
  • a meter is e.g. of the type M-TX from the company Kr ⁇ ger Cor- rosion A/S, Fabriksparken 50, Glostrup, Denmark. This type is available with nominal diameters from 20 to 50 mm 0 and a maximal flow from 5 to 30 m 3 /h.
  • the signal output is an electric contact which can be loaded with 24 V and 0,2 A.
  • Such meters generate impulses which activate a remote counter, whereby the result shown by the meter at any time can be read on the remote counter.
  • the Swedish patent No. 360,734 discloses thus a water meter with an electric impulse transfer of the rotation of a digit disc.
  • one indicator of the water meter must be dismounted and replaced by a disc which carries a magnet.
  • a magnetic switch is integrated and positioned oppo- site said disc. The switch will thus emit one impulse for each rotation of the disc.
  • the thus modified water meter is suggested to be used for remote transfer of the measuring result .
  • the British patent application No. 2,051,352 dis- closes a liquid gauge with a transparent housing or a housing with one or two windows.
  • a paddle wheel or a propeller is brought into rotation by the flowing liquid, and the wings of the wheel break or reflect a beam of light which enters and exits the meter through the transparent housing of the meter or its windows.
  • a light source and a light detecting means are built into the meter.
  • the meter disclosed in the Swedish patent No. 360,734 has the disadvantage that a magnet is arranged on an indicator which is driven by the rotor of the meter via a rather low transmission ratio, as the magnetic attraction will then be able to slow down or stop the movement of the meter.
  • a magnet is arranged on an indicator which is driven by the rotor of the meter via a rather low transmission ratio, as the magnetic attraction will then be able to slow down or stop the movement of the meter.
  • a magnet is arranged on an indicator which is driven by the rotor of the meter via a rather low transmission ratio, as the magnetic attraction will then be able to slow down or stop the movement of the meter.
  • such a meter may have difficulties in obtaining the approval of the utility companies.
  • the Swedish patent application No. 89 03145-4 discloses an alarm device to be arranged in a detachable manner on a water meter of a generally known type.
  • the alarm device is arranged across the pane of the meter, and a light source in the alarm device illuminates the indicators of the meter by transmitting a beam of light towards the dial of the meter, preferably towards the major part of the dial or the entire dial.
  • One or two light-dependent resistors receive the light which is reflected from the dial and the indicators.
  • US patent No. 5,493,917 discloses a method for changing a metering apparatus for remote reading, a metering apparatus for remote reading and a remote reading pick-up for a metering apparatus.
  • the metering apparatus can be a water meter of the dry-running type or another supply meter with an indicator behind a glass.
  • the glass of the metering apparatus must be replaced by a modified glass in which a pick-up is integrated for detecting the movement of one of the rotating indicators of the metering apparatus.
  • a counting signal is created each time the indicator in question passes the pick-up.
  • the picking up can be effected by magnetism whereby the pick-up is a reed-contact and the indicator is provided with a permanent magnet, or by light whereby the scanning unit is a photo cell and the indicator is provided with a reflector.
  • the scanning signal is used for registration (counting) of the consumption. It is preferred to use one of the slowly rotating indicators of the metering apparatus as the registration is only used for distant reading of the metering apparatus in order to state the consumption.
  • an arrangement providing one impulse per ten gallons of water 37.85 1). It is a disadvantage of the method and the apparatus in said patent that an intervention in the meter is necess- ary in order to mount the pick-up. Since a supply meter will in practice always be sealed, the glass cannot be dismounted without breaking the seal, and the meter cannot thereafter serve as settling basis between supplier and customer before it has been sealed again. In that case, a control would be required that the characteristics of the meter had not been changed by the intervention, and the use of the method and the apparatus on generally known, already installed supply meters must therefore be described as completely unrealis- tic.
  • the object of the invention is to provide a method and a piece of equipment for monitoring a supply pattern as it is registered by a supply meter, such that an alarm is given at the presence of a small, continuous supply, which equipment can be retrofitted on a supply meter such as a water meter without any required intervention in the meter and without risk of blocking the meter work.
  • the object is met in either that the movable part is illuminated by a directional beam of light, the direction of which is adjusted in relation to the position of the movable part, or that the reflected light is captured by a directional detecting means, the direction of which is adjusted in relation to the position of the movable part.
  • the detecting area i.e. the area of the dial of the meter (behind the glass of the meter) where the detection takes place, can be selected freely, which permits to detect a movement of the very movable part having a desired movement characteristic in relation to the media flow through the meter.
  • an alarm signal is created when the movable part does not stand still for a first predetermined period of time within a second predetermined period of time.
  • that pointer or indicator which is moving fastest in relation to media flow through the meter is used as the movable part, whereby the leakage is regis- tered faster, and minor leakages can be registered.
  • the movable part is the star-wheel or indicator wheel of the meter.
  • 2.5 XN EBH from the company Spanner-Pollux GmbH, Ludwigs- hafen (DE) has a capacity of 2.5 m 3 /h.
  • This meter has a counting gear train for whole cubic metres and four decadic indicators where the most sensitive rotates one revolution per 0.1 1.
  • This embodiment of the invention where the very movement of the star-wheel or the indicator wheel is detected permits a very reliable and fast detection of dripping taps and similar very small water consumers. With a rougher discrimination, such a small consumer would not succeed in triggering the detecting means of the metering equipment before a new consumption from another water consumer would camouflage the detecting signal from the small consumer completely.
  • an electric signal is created and filtered for contents of lower multiples of the mains frequency.
  • the said object is met in that the illuminating means are directional and their illumination direction is adjustable in relation to the position of the movable part, or in that the light detecting means are directional and their detection direction are adjustable in relation to the position of the movable part .
  • the detecting area i.e. the area of the dial of the meter (behind the pane of the meter) where the detecting is effected and which is both illumi- nated by illuminating means and monitored by the light detecting means, can be freely selected, whereby the equipment will detect the movement of exactly that movable part which has a desired movement characteristic in relation to the media flow through the meter. Furthermore, it is obtained that a detecting area can be selected where the optical contrast is the best possible, e.g. where the movable part the movement of which is to be detected has a printed pattern or picture.
  • infrared light which will entail that the equipment will be insensitive to extraneous light and changes in the general illumination.
  • the light detecting means - and preferably also the illuminating means - have preferably an optical filter for filtering of the light which is reflected to the light det- ecting means whereby disturbance from extraneous light can be further minimised.
  • Analysis means in the equipment comprise preferably means for creating an alarm signal on the basis of the temporal behaviour of an output signal from the light detecting means, such that the consumer is made aware of a continuous consumption.
  • the alarm signal can in a manner known per se control sound or light signalling devices.
  • the analysis means comprise electric filters for filtering an output signal from the light detecting means, preferably band stop filters which are tuned to lower multiples of the mains frequency.
  • the equipment has an indicator such as a control light to display an output signal from the light detecting means.
  • the detecting field of the scanning unit is 30-60 mm 2 , preferably 40-50 mm 2 at a distance of 18 mm, corresponding to a detecting angle of 2 x 12.5°, such that as big a portion as practically possible of the detecting field is occupied by the outline of the movable part in order to obtain a more reliable detection.
  • the light detecting means and illuminating means are built together as a scanning unit which is preferably adapted to be fastened on the meter by means of a clamping device . In this way, a simple, clear, secure and less expensive posi- tion is obtained of both the illuminating means and light detecting means.
  • the scanning unit is preferably suspended such that its position and direction in relation to the meter are adjustable without the use of tools. A consumer may thus himself adjust the scanning unit to scan the movable part in question of the meter.
  • the scanning unit has preferably an indicator such as a control light to display an output signal from the light detecting means.
  • the scanning unit can be designed with a waterproof casing, whereby it can be mounted on a water meter placed in a well or in a similar wet or humid environment.
  • the scanning unit and the associated connection cable are waterproof.
  • the scanning can thus be mounted on a water meter placed in a well, whether there is water in the well or not, and whether the meter is positioned above or below the water surface, if any.
  • Fig. 1 shows a longitudinal section-in-part in a water meter of a generally known type, on which a scanning unit according to the invention is mounted
  • Fig. 2 shows the scanning unit in Fig. 1 in a longitudinal section
  • Fig. 3 shows the dial in the water meter in Fig. 1, and
  • Fig. 4 shows a block diagram of a piece of equipment according to the invention.
  • the same reference designation refers to the same element in all the figures.
  • Fig. 1 shows a water meter 1 of a generally known type.
  • the top portion of the meter 1 with the glass 2 is shown in longitudinal section, and the cover 3 is opened so that there is free access to the top side of the glass
  • a dial 4 is arranged, as shown in Fig. 3.
  • the dial 4 is provided with a counting gear train 31 which in the shown meter counts whole cubic metres.
  • the star-wheel rotates thus considerably faster than the litre indicator 34 when the meter is working.
  • the star-wheel is in the shown meter provided with teeth 35 along the edge and an eccentrically arranged marking.
  • the object of all these visual indicators is to constitute a conspicuous and easily readable indicator of water consumption.
  • Such indicators have by and large always figures or symbols which are designed with a highly optical contrast in order to facilitate the reading.
  • Fig. 1 shows two indicators 5 and the star-wheel
  • a scanning unit 9 according to the invention is fastened to the meter in such a position that the head 10 of the scanning unit with a not -shown window points towards the edge of the star-wheel 6 of the water meter 1. According to the invention, the scanning unit 9 is adjusted such that it "watches" the teeth of the star-wheel. This adjustment is essential for the good and secure function of the equipment according to the invention and for the possibility to use the equipment on many different types of and embodiments of supply meters and similar apparatus with visually readable indicators.
  • the scanning unit 9 is shown in a longitudinal section in Fig. 2.
  • the scanning unit 9 has a housing 28 in which a printed circuit board 23 is mounted. Two of the components mounted on the printed circuit board are shown in Fig. 2, i.e. a photo cell 21 and a light-emitting diode 11. Furthermore, a cable 12 (which is only seen in Fig. 1) is connected to the printed circuit board in order to provide this with power and control signals and to carry away metering signals.
  • the photo cell 21 which can be e.g. of the type OPB608B from the company Optek Technology, Inc., 1215 Crosby Road, Carrollton, Texas (US) , contains in the shown embodiment a light-emitting diode 25 which emits infrared light 29, and an NPN silicon photo-transistor 26 which is sensitive to light 30 from the light-emitting diode 25.
  • the light 29 is reflected from the light-emitting diode 25 by a reflecting object 27 in the form of reflected light 30 to the photo-transistor which thus emits a signal.
  • This signal is thus an indication of the presence of a reflecting object 27.
  • Both the light-emitting diode and the photo-transistor "watch" through the same surface of the casing of the photo cell, and a reflecting object placed opposite this surface will thus reflect the light of the light-emitting diode back into the photo-transistor which will then react.
  • photo cells can be selected with a more or less narrow vertical angle in said conical surface, whereby the detecting area which is in practice obtained on the indicator and its surroundings will be smaller or larger, respectively.
  • a smaller detecting area can provide the light detecting means with a better discrimination because the photo cell in practice may only "watch" one tooth at a time on the star-wheel, however, it may be difficult to adjust the direction because this must be done in a correspondingly pre- cise manner.
  • a larger detecting area will entail a less critical directional adjustment, probably also a minor discrimination, because the light quantity incident to the photo-transistor will be integrated over a larger area of the indicator of the supply meter so that the photo cell might have difficulties in distinguishing the individual teeth on a star-wheel.
  • an optical filter 24 is positioned and permits only infrared light with a desired wavelength to pass such that a disturbing influence from surrounding light or heat radiation is reduced to a minimum.
  • the scanning unit is preferably waterproof. Water meters can in many case be installed in humid or wet surroundings, e.g. in wells, and in several cases, the meter is actually placed under water or can be submerged regularly.
  • the scanning unit 9 and the cable 12 with the bush 22 are made impermeable to a moderate static water pressure, the scanning unit can without any problem be mounted in wet surroundings or under water.
  • the watertightness can be provided in any way suitable, however, according to the invention, preferably in the way that the housing 28 and the bush 22 are cast or filled with an appropriate plastic material, such as a two-component epoxy.
  • the scanning unit 9 is mounted such that the light 29 is reflected from the teeth 35 of the star-wheel 6 (cf. Fig. 3).
  • the photo-transistor 26 will thus emit an impulse each time one of the teeth 35 passes through the "visual field" of the photo cell 21.
  • a pulse train from the exit of the photo-transistor 26 with a certain frequency shows in this way that the star-wheel 6 rotates with a certain number of revolutions.
  • the scanning unit 9 is in Fig. 1 mounted on the meter 1 by means of a flexible arm 14 carried by a foot 15 fastened to the meter 1 in a suitable place by means of a clip or the like 16.
  • the arm 14 has a retainer 13 carrying the scanning unit 9 ,
  • the scanning unit 9 can be fastened on the meter 1 in any suitable way.
  • a fastening is used which can be made without using any tools and without particular skills being required for the mounting.
  • the scanning unit can be adhered on the glass 2 by a piece of double adhesive foam tape.
  • the scanning unit 9 is adjustable relative to the supply meter 1.
  • the arm 14 is made of metal which on one side is sufficiently rigid for the scanning unit 9 to be carried in a stable and secure manner, and on the other side is sufficiently flexible for the direction of the scanning unit towards the star-wheel - and the distance of the unit from the glass 2 - to be adjusted in a simple and secure manner without using tools, merely by bending the arm 14 appropriately.
  • the resulting sensitivity and the degree of discrimination of the scanning unit 9 in relation the indic- ator of the present supply meter are the ones to be adjusted for satisfactory values.
  • the illuminating means (25) (the light source) and the light detecting means (26) form independent units
  • one of these units is adjustable in the direction and preferably also the position (the distance from the supply meter) .
  • Combinations may thus be used with a fixed illuminating means with a wide illumination field and an adjustable light detecting means with a narrow detection field, or an adjustable illuminating means with a narrow illumination field and a fixed light detecting means with a wide detec- tion field.
  • Fig. 4 shows block diagrams of the electronic circuits in the scanning unit 9.
  • the output signal from the photo-transistor is carried (42) via a band stop filter 43 to a comparator 44 which serves as a discriminator in order to provide an enhanced and unambiguous output signal on the wire 45.
  • This output signal is in the shown embodi- ment a digital signal which has one level when much light is reflected from the light-emitting diode 25 to the photo- transistor 26, and another level when little light is reflected from the light-emitting diode 25 to the photo- transistor 26.
  • the band stop filter 43 is adjusted to the frequency of the mains or can be adapted to block signals with frequencies corresponding to the lower harmonics of the mains frequency.
  • the use of this filter has by tests proved to entail a heavy reduction of the sensitivity of the detecting means to extraneous light signals containing the frequency of the mains, such as illumination with a fluorescent tube. Thus is obtained a more secure detection of the movement of the star-wheel .
  • the output signal is carried to an amplifier 46 which drives a light-emitting diode 11.
  • the light-emitting diode 11 is positioned in a visible place on the top face of the scanning unit 9, cf . Figs. 1-2. It can thus be directly observed whether light is reflected from the star- wheel 6 to the photo cell 21 or not.
  • the adjustment of the direction of the scanning unit towards the teeth of the star-wheel is in this way facilitated to a considerable extent .
  • the output signal from the comparator 45 is fur- ther carried via the cable 12 from the scanning unit to a control unit 41, cf. Fig. 4.
  • the control unit 41 is arranged in a housing at a place which is convenient for the user and which can be situated near to or far from the water meter 1; the length of the cable 12 is adjusted accord- ingly.
  • the signal is carried from the scanning unit 9 to a so-called one-shot 47 (mono- stable multivibrator) , which retains its output signal in e.g. 2 sees after having been triggered.
  • a stable signal with a desired logical level on the output of the one-shot 47 as long as the scanning unit emits pulses even though the pulses necessarily keep changing their logical level .
  • the output signal from the one-shot 47 is carried to a delay circuit 48, on the output 49 of which a signal does not occur until a signal has been present on the input without interruption for a certain period of time, e.g. 5 min.
  • circuits 47 and 48 are then e.g. that a signal is present on the node 49 if the star-wheel of the meter 1 has not been stopped for at least 2 s within a period of 5 min.
  • a signal on the node 49 is thus a sign indicating a continuous consumption of e.g. water, which could be due to leakage or another system error.
  • the signal on the node 49 is carried to a lamp amplifier 50 which turns on a warning lamp 51; to an alarm amplifier 52 which drives the loudspeaker 53 the loudness of which can be adjusted by a potentiometer 54; and to a relay amplifier 55 which drives a relay 56, from the contacts 57 of which an alarm signal can be had to an external signal receiver such as a central alarm system.
  • the delay time of the delay circuit 48 can be adjusted by means of an adjustment means such as a switch 58; thus, the function of the equip- ment can be adapted to different conditions of use.
  • a not shown control light corresponding to the light -emitting diode 11 is arranged on the control unit 41 - or a separate housing - and is driven by the output signal from the scanning unit via an amplifier cor- responding to the amplifier 46.
  • said control light can be arranged in a place where it can be monitored continuously or often by staff, and in this way, all "visible" variations in the behaviour of the supply meter can be registered visually. It is often possibly by the human eye to observe special patterns in the flashing signals from a control light which automatic equipment is not able to decipher .
  • Such meters can be mentioned heat counters for district heating, gas meters, oleometers and electricity meters and meters in general for liquids, gases or electric power.
  • the invention can be used in other cases where the movement of a pointer or another visible indicator has to be monitored.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

L'invention concerne un procédé permettant de surveiller une partie de compteur de consommation, un indicateur mobile étant éclairé à travers une vitre, son déplacement étant détecté de manière continue à l'extérieur de ladite vitre à l'aide d'une lumière réfléchie, et un signal d'alarme étant créé, de préférence, lorsque l'indicateur n'est pas resté immobile pendant une durée prédéterminée mesurée à l'intérieur d'une seconde durée prédéterminée. Les moyens d'éclairage et/ou de détecteur lumineux sont dirigés et réglables. Le compteur est, de préférence, un compteur d'eau, et l'indicateur est une roue en étoile. L'équipement de surveillance comprend des moyens de détection légers situés à l'extérieur du boîtier du compteur destinés à détecter la lumière réfléchie, et des moyens d'analyse destinés à indiquer les déplacements de l'indicateur, et à former un signal d'alarme. L'équipement comprend, de préférence, des moyens d'éclairage destinés à éclairer l'indicateur, de préférence, une lumière infrarouge. Lesdits moyens sont, de préférence, construits ensemble dans une unité de balayage conçue pour être fixée sur le compteur. L'unité de balayage est, de préférence, réglée sans outils, et l'équipement comprend, de préférence, une lumière de contrôle destinée à signaler un signal de sortie provenant des moyens de détection de lumière.
PCT/DK2001/000046 2000-01-26 2001-01-22 Procédé et équipement permettant de surveiller un compteur de consommation WO2001055682A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU26660/01A AU2666001A (en) 2000-01-26 2001-01-22 Method and equipment for monitoring a supply meter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200000119 2000-01-26
DKPA200000119 2000-01-26

Publications (1)

Publication Number Publication Date
WO2001055682A1 true WO2001055682A1 (fr) 2001-08-02

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AU (1) AU2666001A (fr)
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106768138A (zh) * 2016-12-07 2017-05-31 金卡高科技股份有限公司 一种流量测量仪表采样装置及其采样方法
WO2017209589A1 (fr) * 2016-06-02 2017-12-07 Maleb Soufiane Télérelève à source d'énergie hydroélectrique pour contrôle conforme à la consommation réelle avec auto-détection de fuite/fraude.
WO2018127485A1 (fr) 2017-01-04 2018-07-12 Northq Aps Capteur et procédé de lecture d'un compteur de service public
EP3382347A1 (fr) * 2017-03-30 2018-10-03 NorthQ ApS Capteur et procédé de lecture de compteur de services

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT307765B (de) * 1969-04-10 1973-06-12 Elin Union Ag Durchfluß-Mengenzähler
GB1551747A (en) * 1975-07-09 1979-09-12 Renault Fluid delivery meter
US4987297A (en) * 1988-03-14 1991-01-22 Gaz De France Method and apparatus for automatically reading a mechanical fluid meter
US5140351A (en) * 1987-08-24 1992-08-18 Tel-Transfer Systems, Inc. Remote meter reading method and apparatus
US5214587A (en) * 1990-11-28 1993-05-25 Green Richard G Device for monitoring utility usage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT307765B (de) * 1969-04-10 1973-06-12 Elin Union Ag Durchfluß-Mengenzähler
GB1551747A (en) * 1975-07-09 1979-09-12 Renault Fluid delivery meter
US5140351A (en) * 1987-08-24 1992-08-18 Tel-Transfer Systems, Inc. Remote meter reading method and apparatus
US4987297A (en) * 1988-03-14 1991-01-22 Gaz De France Method and apparatus for automatically reading a mechanical fluid meter
US5214587A (en) * 1990-11-28 1993-05-25 Green Richard G Device for monitoring utility usage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017209589A1 (fr) * 2016-06-02 2017-12-07 Maleb Soufiane Télérelève à source d'énergie hydroélectrique pour contrôle conforme à la consommation réelle avec auto-détection de fuite/fraude.
CN106768138A (zh) * 2016-12-07 2017-05-31 金卡高科技股份有限公司 一种流量测量仪表采样装置及其采样方法
WO2018127485A1 (fr) 2017-01-04 2018-07-12 Northq Aps Capteur et procédé de lecture d'un compteur de service public
EP3382347A1 (fr) * 2017-03-30 2018-10-03 NorthQ ApS Capteur et procédé de lecture de compteur de services

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