EP0215928A1 - Compteur indiquant la quantite et le cout de l'energie consommee - Google Patents

Compteur indiquant la quantite et le cout de l'energie consommee

Info

Publication number
EP0215928A1
EP0215928A1 EP19860902275 EP86902275A EP0215928A1 EP 0215928 A1 EP0215928 A1 EP 0215928A1 EP 19860902275 EP19860902275 EP 19860902275 EP 86902275 A EP86902275 A EP 86902275A EP 0215928 A1 EP0215928 A1 EP 0215928A1
Authority
EP
European Patent Office
Prior art keywords
power
load
power meter
cost
meter according
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP19860902275
Other languages
German (de)
English (en)
Inventor
Marion Baran
Jack Baran
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0215928A1 publication Critical patent/EP0215928A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/133—Arrangements for measuring electric power or power factor by using digital technique

Definitions

  • the present invention relates to electricity power meters and in particular to power meters which can be connected to the circuitry of an individual electrical appliance .
  • Power recording units are, of course, known, as is a meter which shows the costing of the power consumption.
  • a meter which shows the costing of the power consumption.
  • Such a meter is shown in U.K. Patent 2 041 588 in which the power consumption is read as a 0 succession of discrete samples of a parameter of the mains supply, which are then fed via an analogue to digital convertor to a microprocessor operating in accordance with a stored programme. From which a signal is generated to display the power consumption and another 5 signal to display the accumulated cost of the power consumed.
  • the invention comprises a power meter adapted to continuously measure electrical power consumed by a load, which utilises input information on 5 cost/kWh to calculate and display the total energy consumption and total cost accumulated during a time interval.
  • the invention comprises a power meter adapted to continuously measure electrical power 0 consumed by a load and which continuously convert the measured electrical power consumed by the load into a pulse train signal with frequency proportional to the rate of power consumed, and which calculates and displays the energy consumption and the cost of the energy 5 consumed.
  • An embodiment of the present invention overcomes the beforementioned problems of the prior art by providing a power meter having a power sensor/transducer, which converts continuously electrical power into a pulse frequency signal, and utilizes programmable, digital frequency dividers to provide signals to display the power consumed and the costs of the power consumed.
  • ASIC Application Specific Integrated Circuits
  • VLSI Very Large Scale Integrated Circuits
  • Other embodiments of the instrument of the present invention might differ in: the sensor type used to continuously measure the power taken by the load and produce an analog signal reflecting this power; the transducer type used to convert the analog signal representing the power into a pulse-frequency; the detailed structure of the programmable digital dividers, rate multipliers, counters, timers and displays; - being a small, portable, self-contained instrument, inserted by the user between the appliance and the electrical load, or being a panel instrument, installed in an appliance, or - being an instrument intended for switchboard installation, used for total energy metering in an installation; being a single-phase or a three-phase energy/cost meter.
  • Fig. 1 illustrates schematically a block diagram of the analog circuitry of the present invention
  • Fig. 2 illustrates schematically a block diagram of the digital circuitry of the present invention
  • Fig. 3 illustrates a circuit diagram detailing one implementation of the block diagram shown in Fig. 1; and Fig. 4 illustrates a circuit diagram detailing one implementation of the block diagram shown in Fig. 2.
  • the block diagram of the analog circuitry which performs power sensing is shown in Fig. 1.
  • the active and neutral conductors from the mains supply form the input signal 1 of the power meter.
  • a load (not shown) may be connected to the active, neutEral and earth conductors of a power point 2, for example, a standard 10 amp power point.
  • the earth conductor of the input signal 1 is connected to the earth conductor of the power point
  • the load may be an appliance, or a household circuitry, which is to be measured by the power meter and display the amount of power being consumed or its accumulated cost.
  • the instantaneous input signal 1 is sensed with a voltage divider (in other embodiments it
  • V. 5 volt corresponding to an input signal 1 of 240 volts.
  • the instantaneous current drawn by the load connected to the power point 2, 15 is sensed by a series resistance R connected between the neutral terminal of the power point 2 and the neutral terminal of the input signal 1.
  • the voltage V render measured across ' the series resistance R is thus proportional to the instantaneous current drawn by the load.
  • V- 1 volt corresponding to the instantaneous current drawn by the load. (Again, in other embodiments, it might be sensed by a current transformer.)
  • the voltage and current signals V. and V- are then applied to operational amplifiers 3 and 4 to give impedance
  • an optocoupler 7 may then be used to interconnect the analog circuitry with the digital circuitry--(shown in Fig. 2) whilst providing electrical isolation between the two.
  • An optocoupler typically consists of a light emitting diode which emitts electromagnetic radiation at the frequency of the sinusoidal signal, and a photo-sensitive transistor to receive this electromagnetic radiation and convert it to a pulse train for processing in the digital circuitry shown in Fig. 2.
  • the digital pulse train produced by the circuitry of Fig. 1 is further processed to provide a display of the energy consumed (in kilowatt hours), the power (in kilowatts), the time elapsed, or the actual cost (in dollars) of the power consumed by the load.
  • Each of the functions may be selected on the keyboard 8.
  • the rate that is, the cost per kilowatt hour, is entered using the numerals on the keyboard. Any rate from 0.1 cents to 99 cents per kilowatt hour may be entered. If an error is made during entry, the clear button 'C may be pressed and a new rate is selected. The rate selected may be automatically displayed, and used to multiply the frequency of the incoming pulse train.
  • the circuitry uses the value, which is keyed in, to calculate the various functions which may be displayed.
  • the power, cost or time elapsed may be displayed by pressing the appropriate keys on the keyboard 8.
  • the power (in kilowatts) is displayed by pressing 'P 1
  • the cost (in dollars) is displayed by pressing '$'
  • the time (in days, hours, minutes) may be displayed by pressing 'T' .
  • the signals for displaying the power, cost, or time are generated by the 'Digit Latch and Decimal Point Control Module' 9. This module is a state machine which selectes the appropriate division, depending on the rate selected by the keyboard.
  • the appropriate division is carried out by the 'Digital Frequency Divider' 10 and the 'Rate Multiplier' 11.
  • the frequency of the incoming pulse train is divided by either 1, 10 or 100 depending on the rate selected.
  • the rate multiplier 11 coverts the incoming pulses to a - 6 - pulse train of frequency proportional- to_ the selected rate (or cost per kilowatt hour) .
  • the remainder of the circuitry operates on the pulse train to convert it into the desired display.
  • This circuitry consists of two 'And gates' 12 and a '4 Decade Counter/latch' 13 both of which are controlled by the 'Gate and Counter/Latch Reset Controller' 14.
  • the 'Gate and Counter/Latch Reset Controller* 14 also causes the reset/start and stop sequences for measuring the cost of power consumed.
  • the '4 Decade Counter Latch' 13 accumulates the costs or energy.
  • the Power function 'P' is selected, the counter is automatically reset every n seconds, displaying the average power.
  • a timer 15 which keeps track of time from minutes to 99 days.
  • the display selector 16 then tranmits to the display 17 the appropriate signal depending on the selected keyboard function.
  • the display consists of four 7-segment L.E.D. units and also, 4 L.E.D.s to indicate the selected display function.
  • a variable display can be provided to show any of the required parameters or individual displays can be provided for each of the functions.
  • Fig. 3 is shown a circuit diagram illustrating one implementation of the analog circuitry as shown in the block diagram of Fig. 1.
  • Fig. 4 shows a circuit diagram illustrating one implementation of the digital circuitry as shown in Fig. 2. It has a keyboard, a display, a rate multiplier and a digital .frequency divider shown as 8, 17, 11 and 10 respectively in Fig. 2. It is distinguished by a single
  • Integrated Circuit s labelled as 8748 on Fig. 4 which performs the functions of: firstly, accepting the rate from the keyboard and setting the rate into the rate miltiplier (shown as 11 in Fig. 2) ; secondly, accumulating the pulses representing the cost or power

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

Compteur permettant d'indiquer la quantité et le coût de l'énergie consommée sur une période donnée quelle qu'elle soit. Il permet de mesurer la consommation d'énergie électrique de manière continue, ce qui permet une plus grande précision que dans le cas de mesures à intervalles de temps espacés. De préference, ledit compteur transforme continuellement la quantité d'énergie électrique consommée par la charge en une série d'impulsions dont la fréquence est proportionnelle au taux d'énergie consommée, et utilise des réducteurs numériques de préference produisant des signaux utilisés programmables (10) produisant des signaux utilisés pour indiquer (17) la quantité et le coût de l'énergie consommée.
EP19860902275 1985-03-25 1986-03-25 Compteur indiquant la quantite et le cout de l'energie consommee Withdrawn EP0215928A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU9896/85 1985-03-25
AU989685 1985-03-25

Publications (1)

Publication Number Publication Date
EP0215928A1 true EP0215928A1 (fr) 1987-04-01

Family

ID=3700688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860902275 Withdrawn EP0215928A1 (fr) 1985-03-25 1986-03-25 Compteur indiquant la quantite et le cout de l'energie consommee

Country Status (2)

Country Link
EP (1) EP0215928A1 (fr)
WO (1) WO1986005887A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5407146A (en) * 1989-07-04 1995-04-18 Fuji Photo Film Co., Ltd. Photographic film cassette
US5776860A (en) * 1993-02-26 1998-07-07 Nippon Zeon Co., Ltd. Plant growth promoter

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9115977D0 (en) * 1991-07-24 1991-09-11 Gen Electric Co Plc Electricity consumption meters
GB9201698D0 (en) * 1992-01-25 1992-03-11 Knight Steve O L Electrical energy cost monitor
US5537029A (en) 1992-02-21 1996-07-16 Abb Power T&D Company Inc. Method and apparatus for electronic meter testing
US5457621A (en) 1992-02-21 1995-10-10 Abb Power T&D Company Inc. Switching power supply having voltage blocking clamp
GB9214626D0 (en) * 1992-07-09 1992-08-19 Oxley Dev Co Ltd Energy monitoring
ES2107934B1 (es) * 1994-07-28 1998-07-01 Blanco Benito Roman Guerrero Medidor de energia electrica activa con tarificador programable por el usuario.
ES2121560B1 (es) 1997-05-08 1999-08-16 Sala Vicente Rodilla Avisador programable de consumo electrico.
RU2166766C2 (ru) * 1998-10-06 2001-05-10 Общество с ограниченной ответственностью "ЭНИКА" Счетчик электроэнергии
FI116253B (fi) * 2003-12-22 2005-10-14 Abb Oy Sähkökäytön energiakulutus
US7315162B2 (en) 2004-03-18 2008-01-01 Elster Electricity, Llc Reducing power consumption of electrical meters
US7227350B2 (en) 2004-03-18 2007-06-05 Elster Electricity, Llc Bias technique for electric utility meter
US7355867B2 (en) 2004-08-17 2008-04-08 Elster Electricity, Llc Power supply for an electric meter having a high-voltage regulator that limits the voltage applied to certain components below the normal operating input voltage
WO2009132160A1 (fr) 2008-04-22 2009-10-29 Belkin International, Inc. Alimentation électrique améliorée
WO2011097538A1 (fr) 2010-02-04 2011-08-11 Belkin International, Inc. Circuit de détection de mise à la terre amélioré et procédé de fabrication associé
WO2012177810A2 (fr) 2011-06-20 2012-12-27 Belkin International, Inc. Alimentation électrique améliorée et procédés associés

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE334117C (de) * 1917-07-18 1921-03-09 Koerting & Mathiesen Akt Ges Zaehler fuer Elektrizitaet, Gas u. dgl.
DE336067C (de) * 1917-07-20 1921-04-23 Koerting & Mathiesen Akt Ges Zaehler fuer Elektrizitaet, Gas usw.
GB1500509A (en) * 1974-12-05 1978-02-08 Jordan E Running cost meter
US4207557A (en) * 1977-05-20 1980-06-10 Blose John B User electric energy consumption apparatus
FR2399028A1 (fr) * 1977-07-28 1979-02-23 Electricite De France Perfectionnements aux compteurs de depassement d'energie electrique
US4147978A (en) * 1977-12-19 1979-04-03 Dupont Energy Management Corporation System for monitoring electrical energy consumption
US4233590A (en) * 1978-02-27 1980-11-11 Gilkeson Robert F Supplemental energy register
GB2041588B (en) * 1979-01-25 1983-01-06 Hutt P Apparatus for metering and displaying the cost of electrical energy consumption
GB2042777B (en) * 1979-02-21 1983-05-11 South Eastern Elec Board Electrical energy consumption meter
AU7371981A (en) * 1981-04-06 1982-10-19 Dupont Energy Management Corp. System for monitoring utility usage
GB2133594A (en) * 1982-12-24 1984-07-25 Leslie Taylor Electrical power consumption costing device
DE3320253A1 (de) * 1983-06-03 1984-12-06 Ernst Dipl.-Ing. 5960 Olpe Vigener Anzeigegeraet fuer verbrauchsdaten in gebaeuden und wohnungen
GB2148565B (en) * 1983-10-20 1987-07-22 Jel Energy Conservation Servic Monitoring devices

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8605887A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5407146A (en) * 1989-07-04 1995-04-18 Fuji Photo Film Co., Ltd. Photographic film cassette
US5776860A (en) * 1993-02-26 1998-07-07 Nippon Zeon Co., Ltd. Plant growth promoter
US6093683A (en) * 1993-02-26 2000-07-25 Nippon Zeon Co Ltd Plant growth promoter

Also Published As

Publication number Publication date
WO1986005887A1 (fr) 1986-10-09

Similar Documents

Publication Publication Date Title
EP0215928A1 (fr) Compteur indiquant la quantite et le cout de l'energie consommee
US4106095A (en) Electrical usage display system
CA1269713A (fr) Compteurs electroniques de consommation d'electricite
US4080568A (en) Energy monitoring device
US4713608A (en) Apparatus for providing cost efficient power measurement
US4253151A (en) Apparatus for monitoring and controlling consumer power consumption
US6703823B1 (en) Method and apparatus for electronic meter testing
US5706214A (en) Calibration of microcomputer-based metering apparatus
CA2029936A1 (fr) Montage permettant de verifier des valeurs electriques derivees d'au moins deux impulsions electriques provenant dudit montage
US4814996A (en) Portable energy cost calculation
US4321530A (en) Multimeter with tone indication
GB2041588A (en) Apparatus for metering and displaying the cost of electrical energy consumption
AU600479B2 (en) Solid state electricity meter display
US4199817A (en) Digital averager
GB2149128A (en) 3-phase solid state energy meter
KR20110016125A (ko) 전자식 전력량계 및 전자식 전력량계의 표시방법
CS195306B2 (cs) Zapojení pro měření množství tepla spotřebovaného v tepelném spotřebiči
DE3243258A1 (de) Messgeraet
MY116557A (en) Electronic prepayment type electric watt-hour meter
EP0203947A1 (fr) Appareil electrique statique de mesure de la comsommation de la puissance et de l'energie fournies par un reseau d'alimentation
RU2134865C1 (ru) Устройство учета коммунальных услуг при переменном тарифе
KR840001160B1 (ko) 계수형 적산전력량계
KR200183283Y1 (ko) 간이형 전력량 표시장치
RU2111498C1 (ru) Измеритель электрической энергии
JP2001041985A (ja) 多目的形電力量・流量計

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870303