WO1992016920A1 - Systeme de signalisation - Google Patents

Systeme de signalisation Download PDF

Info

Publication number
WO1992016920A1
WO1992016920A1 PCT/GB1992/000456 GB9200456W WO9216920A1 WO 1992016920 A1 WO1992016920 A1 WO 1992016920A1 GB 9200456 W GB9200456 W GB 9200456W WO 9216920 A1 WO9216920 A1 WO 9216920A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductors
transformer
power cable
winding
signal
Prior art date
Application number
PCT/GB1992/000456
Other languages
English (en)
Inventor
Gilbert Davies
Original Assignee
Gjd Manufacturing Limited
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 Gjd Manufacturing Limited filed Critical Gjd Manufacturing Limited
Priority to GB9319118A priority Critical patent/GB2269970B/en
Publication of WO1992016920A1 publication Critical patent/WO1992016920A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/06—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using power transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5441—Wireless systems or telephone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5458—Monitor sensor; Alarm systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5483—Systems for power line communications using coupling circuits

Definitions

  • a passive infra-red detector positioned so as to be sensitive to the entry of a person into that room and arranged to turn on lights positioned to illuminate that room.
  • this requires positioning the infra-red sensor and the controlled lighting unit at spaced apart locations and introducing cabling to pick up power from an adjacent existing power cable and to link the sensor and the lighting unit.
  • the structure of the premises is often such that it is very difficult to introduce the cabling linking the sensor and the lighting unit.
  • a method for signalling through a power cable wherein at least one capacitor is connected between first and second conductors of the power cable to define a closed loop incorporating portions of the first and second conductors, signals are injected into the closed loop via a first transformer a winding of which is connected in series with the closed loop, and signals are received from the power cable via a second transformer a winding of which is connected in series with the closed loop.
  • the present invention enables signals to be readily transmitted onto and received from a power cable. Furthermore, the signals transmitted onto the power cable are isolated within the closed loop defined either between the two capacitors or between a single capacitor and a direct electrical connection between the two conductors.
  • the transformers provide whatever degree of mains voltage isolation is required. Thus the problems of noise, signals leaking between different sections of a power network, and inadequate power voltage isolation are easily overcome.
  • Figure 1 illustrates a first embodiment of the present invention
  • Figure 2 illustrates a second embodiment of the invention.
  • a first transformer in the form of a toroidal magnetic core 6 is threaded by the conductor 3.
  • the core 6 is located adjacent capacitor 4 and forms a component of a transmitter unit 7.
  • the transmitter unit also comprises a transducer 8 and an oscillator 9.
  • a second toroidal core 10 forms part of the receiver unit 11 which incorporates a signal processor 12 and a switching unit 13. The system is arranged to transmit signals from the transmitting unit 7 to the receiving unit 11.
  • the signal processor may be a standard tone detector tuned to the frequency of the oscillator 9 which itself may be a standard tone generator.
  • the output of the signal processor may cause the switching unit 13 to provide an appropriate output indicated by arrow 14. That output could for example represent the supply of power to a lighting unit (not shown).
  • the transmitter and receiver units 7 and 11 could be powered from the same power cable as that which Is used for the signal transmission. Preferably connections would be made to that power cable outside the signal loop, that is to the lefthand side of capacitor 4 or the righthand side of capacitor 5 in Figure 1. Such an arrangement avoids main loads on the signal loop affecting the transmitted signal strength.
  • the transmitter unit and / or the receiving unit may be battery operated.
  • the capacitors 4 and 5 should have capacitances appropriate to the transmission cf the signal frequency generated by the oscillator 9. Typically the capacitors will have a value of 0.01 microfarads.
  • the closed signal loop is formed between live and neutral conductors.
  • the signal loop could however be formed between for example the earth and neutral conductors and if this is the case then in application where the earth and neutral cables are interconnected at a power distribution board it is only necessary to introduce one capacitor to close the signal loop.
  • Such an arrangement Is shown in Figure 2.
  • Receiving unit toroidal cores 10 are provided in each of the parallel circuits as are shunt capacitors 5 which are connected between the neutral wires 3 and the earth wires 1.
  • shunt capacitors 5 which are connected between the neutral wires 3 and the earth wires 1.
  • the two receiving units could be identical or could be tuned to different frequencies. If the receiving units are tuned to different frequencies it would be necessary for the transmitting unit to selectively apply either one of those of. different frequencies to the core 6.
  • transformers of a different form from the simple toroidal core illustrated could be used.
  • the toroidal core could be retained but in splitable form so that power conductors could be threaded therethrough without disconnecting the power conductors from the power circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Dc Digital Transmission (AREA)

Abstract

On décrit un système et une méthode de signalisation au moyen d'un câble de puissance. Au moins un condensateur est relié entre des premier et deuxième conducteurs du câble afin de définir une boucle fermée qui incorpore des parties des premier et second conducteurs. On injecte des signaux dans la boucle fermée via un premier transformateur, dont un enroulement est relié en série à la boucle fermée. On reçoit des signaux en provenance du câble de puissance via un deuxième transformateur dont un enroulement est relié en série à la boucle fermée. De cette manière, les signaux appliqués au premier transformateur peuvent être transmis au récepteur au moyen du câble de puissance.
PCT/GB1992/000456 1991-03-16 1992-03-13 Systeme de signalisation WO1992016920A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9319118A GB2269970B (en) 1991-03-16 1992-03-13 Signalling system and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919105613A GB9105613D0 (en) 1991-03-16 1991-03-16 Signalling system and method
GB9105613.5 1991-03-16

Publications (1)

Publication Number Publication Date
WO1992016920A1 true WO1992016920A1 (fr) 1992-10-01

Family

ID=10691710

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/000456 WO1992016920A1 (fr) 1991-03-16 1992-03-13 Systeme de signalisation

Country Status (4)

Country Link
EP (1) EP0576482A1 (fr)
AU (1) AU1366392A (fr)
GB (2) GB9105613D0 (fr)
WO (1) WO1992016920A1 (fr)

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2272350A (en) * 1992-10-22 1994-05-11 Norweb Plc Transmission network and filter therefor
US5949327A (en) * 1994-08-26 1999-09-07 Norweb Plc Coupling of telecommunications signals to a balanced power distribution network
US6144292A (en) * 1992-10-22 2000-11-07 Norweb Plc Powerline communications network employing TDMA, FDMA and/or CDMA
US6282405B1 (en) 1992-10-22 2001-08-28 Norweb Plc Hybrid electricity and telecommunications distribution network
RU2178952C1 (ru) * 2001-04-10 2002-01-27 Мартиросов Владимир Ервандович Система передачи и приема модулированных сигналов по сети электропитания
RU2178951C1 (ru) * 2001-04-10 2002-01-27 Московский государственный авиационный институт (технический университет) Локальная система контроля и сбора данных
WO2002080396A1 (fr) * 2001-03-29 2002-10-10 Ambient Corporation Circuit de couplage pour communications sur des lignes d'alimentation
WO2002101952A1 (fr) * 2001-06-12 2002-12-19 Main.Net Communications Ltd. Circuit de couplage pour communications par courant porteur
WO2002050850A3 (fr) * 2000-12-21 2003-01-03 St Microelectronics Sa Commutateur integre a commande par transformateur rf
US6933835B2 (en) 2001-02-14 2005-08-23 Current Technologies, Llc Data communication over a power line
US6950567B2 (en) 2001-02-14 2005-09-27 Current Technologies, Llc Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line
US6965303B2 (en) 2002-12-10 2005-11-15 Current Technologies, Llc Power line communication system and method
US6965302B2 (en) 2000-04-14 2005-11-15 Current Technologies, Llc Power line communication system and method of using the same
US6977578B2 (en) 2000-01-20 2005-12-20 Current Technologies, Llc Method of isolating data in a power line communications network
US6980090B2 (en) 2002-12-10 2005-12-27 Current Technologies, Llc Device and method for coupling with electrical distribution network infrastructure to provide communications
US6980091B2 (en) 2002-12-10 2005-12-27 Current Technologies, Llc Power line communication system and method of operating the same
US6980089B1 (en) 2000-08-09 2005-12-27 Current Technologies, Llc Non-intrusive coupling to shielded power cable
US6982611B2 (en) 2002-06-24 2006-01-03 Current Technologies, Llc Power line coupling device and method of using the same
US6998962B2 (en) 2000-04-14 2006-02-14 Current Technologies, Llc Power line communication apparatus and method of using the same
US7046124B2 (en) 2003-01-21 2006-05-16 Current Technologies, Llc Power line coupling device and method of using the same
US7053756B2 (en) 2001-12-21 2006-05-30 Current Technologies, Llc Facilitating communication of data signals on electric power systems
US7064654B2 (en) 2002-12-10 2006-06-20 Current Technologies, Llc Power line communication system and method of operating the same
US7075414B2 (en) 2003-05-13 2006-07-11 Current Technologies, Llc Device and method for communicating data signals through multiple power line conductors
US7098773B2 (en) 2003-07-03 2006-08-29 Current Technologies, Llc Power line communication system and method of operating the same
US7102478B2 (en) 2002-06-21 2006-09-05 Current Technologies, Llc Power line coupling device and method of using the same
US7113134B1 (en) 2004-03-12 2006-09-26 Current Technologies, Llc Transformer antenna device and method of using the same
US7173938B1 (en) 2001-05-18 2007-02-06 Current Grid, Llc Method and apparatus for processing outbound data within a powerline based communication system
US7173935B2 (en) 2002-06-07 2007-02-06 Current Grid, Llc Last leg utility grid high-speed data communication network having virtual local area network functionality
US7194528B1 (en) 2001-05-18 2007-03-20 Current Grid, Llc Method and apparatus for processing inbound data within a powerline based communication system
US7245201B1 (en) 2000-08-09 2007-07-17 Current Technologies, Llc Power line coupling device and method of using the same
US7245472B2 (en) 2001-05-18 2007-07-17 Curretn Grid, Llc Medium voltage signal coupling structure for last leg power grid high-speed data network
US7248148B2 (en) 2000-08-09 2007-07-24 Current Technologies, Llc Power line coupling device and method of using the same
US7259657B2 (en) 2005-06-21 2007-08-21 Current Technologies, Llc Multi-subnet power line communications system and method
US7280033B2 (en) 2003-10-15 2007-10-09 Current Technologies, Llc Surface wave power line communications system and method
US7307510B2 (en) 2005-09-02 2007-12-11 Current Technologies, Llc Power meter bypass device and method for a power line communications system
US7307512B2 (en) 2005-04-29 2007-12-11 Current Technologies, Llc Power line coupling device and method of use
US7308103B2 (en) 2003-05-08 2007-12-11 Current Technologies, Llc Power line communication device and method of using the same
RU2322697C2 (ru) * 2005-10-24 2008-04-20 Аркадий Яковлевич Раскин Устройство охранной сигнализации объектов электросвязи
US7460467B1 (en) 2003-07-23 2008-12-02 Current Technologies, Llc Voice-over-IP network test device and method
US7937065B2 (en) 2006-09-11 2011-05-03 Main.Net Communications Ltd. System and method for communicating over neutral power lines
JP2013255085A (ja) * 2012-06-07 2013-12-19 Toyo Networks & System Integration Co Ltd 電力線搬送通信システム
WO2016123463A3 (fr) * 2015-01-29 2016-09-29 Koolbridge Solar, Inc. Appareils intelligents, comprenant des sorties électriques adressables
US9614588B2 (en) 2015-01-29 2017-04-04 Koolbridge Solar, Inc. Smart appliances
US10536039B2 (en) 2017-12-12 2020-01-14 Koolbridge Solar, Inc. Hybrid wired-wireless communication system for delivery of power from two or more sources to smart appliances

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2210813C2 (ru) * 2001-02-12 2003-08-20 Заренков Вячеслав Адамович Устройство для охранно-пожарной сигнализации
RU2206920C2 (ru) * 2001-02-27 2003-06-20 Заренков Вячеслав Адамович Способ обнаружения несанкционированного воздействия на охраняемый объект и устройство для его осуществления
RU2212711C2 (ru) * 2001-11-12 2003-09-20 Заренков Вячеслав Адамович Устройство для охранной сигнализации с дистанционной радиосвязью

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057632A2 (fr) * 1981-01-29 1982-08-11 JEUMONT-SCHNEIDER Société anonyme dite: Procédé de contrôle d'un véhicule ferroviaire en conduite automatique
US4745391A (en) * 1987-02-26 1988-05-17 General Electric Company Method of, and apparatus for, information communication via a power line conductor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057632A2 (fr) * 1981-01-29 1982-08-11 JEUMONT-SCHNEIDER Société anonyme dite: Procédé de contrôle d'un véhicule ferroviaire en conduite automatique
US4745391A (en) * 1987-02-26 1988-05-17 General Electric Company Method of, and apparatus for, information communication via a power line conductor

Cited By (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6172597B1 (en) 1992-10-22 2001-01-09 Norweb Plc Electricity distribution and/or power transmission network and filter for telecommunication over power lines
US6282405B1 (en) 1992-10-22 2001-08-28 Norweb Plc Hybrid electricity and telecommunications distribution network
US5929750A (en) * 1992-10-22 1999-07-27 Norweb Plc Transmission network and filter therefor
US5933071A (en) * 1992-10-22 1999-08-03 Norweb Plc Electricity distribution and/or power transmission network and filter for telecommunication over power lines
GB2272350A (en) * 1992-10-22 1994-05-11 Norweb Plc Transmission network and filter therefor
US6144292A (en) * 1992-10-22 2000-11-07 Norweb Plc Powerline communications network employing TDMA, FDMA and/or CDMA
GB2272350B (en) * 1992-10-22 1997-03-19 Norweb Plc Transmission network
US5949327A (en) * 1994-08-26 1999-09-07 Norweb Plc Coupling of telecommunications signals to a balanced power distribution network
US6977578B2 (en) 2000-01-20 2005-12-20 Current Technologies, Llc Method of isolating data in a power line communications network
US6965302B2 (en) 2000-04-14 2005-11-15 Current Technologies, Llc Power line communication system and method of using the same
US7245212B2 (en) 2000-04-14 2007-07-17 Current Technologies, Llc Power line communication apparatus and method of using the same
US6998962B2 (en) 2000-04-14 2006-02-14 Current Technologies, Llc Power line communication apparatus and method of using the same
US7245201B1 (en) 2000-08-09 2007-07-17 Current Technologies, Llc Power line coupling device and method of using the same
US7248148B2 (en) 2000-08-09 2007-07-24 Current Technologies, Llc Power line coupling device and method of using the same
US6980089B1 (en) 2000-08-09 2005-12-27 Current Technologies, Llc Non-intrusive coupling to shielded power cable
WO2002050850A3 (fr) * 2000-12-21 2003-01-03 St Microelectronics Sa Commutateur integre a commande par transformateur rf
US6862196B2 (en) 2000-12-21 2005-03-01 Stmicroelectronics S.A. Integrated switch with RF transformer control
US7042351B2 (en) 2001-02-14 2006-05-09 Current Technologies, Llc Data communication over a power line
US6933835B2 (en) 2001-02-14 2005-08-23 Current Technologies, Llc Data communication over a power line
US6950567B2 (en) 2001-02-14 2005-09-27 Current Technologies, Llc Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line
US7414518B2 (en) 2001-02-14 2008-08-19 Current Technologies, Llc Power line communication device and method
US7103240B2 (en) 2001-02-14 2006-09-05 Current Technologies, Llc Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line
US7453352B2 (en) 2001-02-14 2008-11-18 Current Technologies, Llc Data communication over a power line
US7218219B2 (en) 2001-02-14 2007-05-15 Current Technologies, Llc Data communication over a power line
US6809633B2 (en) 2001-03-29 2004-10-26 Ambient Corporation Coupling broadband modems to power lines
AU2002240479B2 (en) * 2001-03-29 2005-08-11 Ambient Corporation Coupling circuit for power line communications
WO2002080396A1 (fr) * 2001-03-29 2002-10-10 Ambient Corporation Circuit de couplage pour communications sur des lignes d'alimentation
RU2178951C1 (ru) * 2001-04-10 2002-01-27 Московский государственный авиационный институт (технический университет) Локальная система контроля и сбора данных
RU2178952C1 (ru) * 2001-04-10 2002-01-27 Мартиросов Владимир Ервандович Система передачи и приема модулированных сигналов по сети электропитания
US7245472B2 (en) 2001-05-18 2007-07-17 Curretn Grid, Llc Medium voltage signal coupling structure for last leg power grid high-speed data network
US7194528B1 (en) 2001-05-18 2007-03-20 Current Grid, Llc Method and apparatus for processing inbound data within a powerline based communication system
US7173938B1 (en) 2001-05-18 2007-02-06 Current Grid, Llc Method and apparatus for processing outbound data within a powerline based communication system
WO2002101952A1 (fr) * 2001-06-12 2002-12-19 Main.Net Communications Ltd. Circuit de couplage pour communications par courant porteur
US6927672B2 (en) 2001-06-12 2005-08-09 Main.Net Communications Ltd. Information transmission over power lines
US7053756B2 (en) 2001-12-21 2006-05-30 Current Technologies, Llc Facilitating communication of data signals on electric power systems
US7173935B2 (en) 2002-06-07 2007-02-06 Current Grid, Llc Last leg utility grid high-speed data communication network having virtual local area network functionality
US7102478B2 (en) 2002-06-21 2006-09-05 Current Technologies, Llc Power line coupling device and method of using the same
US7224243B2 (en) 2002-06-24 2007-05-29 Current Technologies, Llc Power line coupling device and method of using the same
US6982611B2 (en) 2002-06-24 2006-01-03 Current Technologies, Llc Power line coupling device and method of using the same
US7626489B2 (en) 2002-12-10 2009-12-01 Current Technologies, Llc Power line communications device and method
US7701325B2 (en) 2002-12-10 2010-04-20 Current Technologies, Llc Power line communication apparatus and method of using the same
US7064654B2 (en) 2002-12-10 2006-06-20 Current Technologies, Llc Power line communication system and method of operating the same
US6980091B2 (en) 2002-12-10 2005-12-27 Current Technologies, Llc Power line communication system and method of operating the same
US7250848B2 (en) 2002-12-10 2007-07-31 Current Technologies, Llc Power line communication apparatus and method of using the same
US6980090B2 (en) 2002-12-10 2005-12-27 Current Technologies, Llc Device and method for coupling with electrical distribution network infrastructure to provide communications
US6965303B2 (en) 2002-12-10 2005-11-15 Current Technologies, Llc Power line communication system and method
US7301440B2 (en) 2002-12-10 2007-11-27 Current Technologies, Llc Power line communication system and method
US7046124B2 (en) 2003-01-21 2006-05-16 Current Technologies, Llc Power line coupling device and method of using the same
US7308103B2 (en) 2003-05-08 2007-12-11 Current Technologies, Llc Power line communication device and method of using the same
US7075414B2 (en) 2003-05-13 2006-07-11 Current Technologies, Llc Device and method for communicating data signals through multiple power line conductors
US7098773B2 (en) 2003-07-03 2006-08-29 Current Technologies, Llc Power line communication system and method of operating the same
US7460467B1 (en) 2003-07-23 2008-12-02 Current Technologies, Llc Voice-over-IP network test device and method
US7280033B2 (en) 2003-10-15 2007-10-09 Current Technologies, Llc Surface wave power line communications system and method
US7113134B1 (en) 2004-03-12 2006-09-26 Current Technologies, Llc Transformer antenna device and method of using the same
US7307512B2 (en) 2005-04-29 2007-12-11 Current Technologies, Llc Power line coupling device and method of use
US7259657B2 (en) 2005-06-21 2007-08-21 Current Technologies, Llc Multi-subnet power line communications system and method
US7561026B2 (en) 2005-09-02 2009-07-14 Current Technologies, Llc Bypass device and method for a power line communications system
US7307510B2 (en) 2005-09-02 2007-12-11 Current Technologies, Llc Power meter bypass device and method for a power line communications system
RU2322697C2 (ru) * 2005-10-24 2008-04-20 Аркадий Яковлевич Раскин Устройство охранной сигнализации объектов электросвязи
US7937065B2 (en) 2006-09-11 2011-05-03 Main.Net Communications Ltd. System and method for communicating over neutral power lines
JP2013255085A (ja) * 2012-06-07 2013-12-19 Toyo Networks & System Integration Co Ltd 電力線搬送通信システム
WO2016123463A3 (fr) * 2015-01-29 2016-09-29 Koolbridge Solar, Inc. Appareils intelligents, comprenant des sorties électriques adressables
US9614588B2 (en) 2015-01-29 2017-04-04 Koolbridge Solar, Inc. Smart appliances
US9785213B2 (en) 2015-01-29 2017-10-10 Koolbridge Solar, Inc. Addressable electrical outlets
US9793953B2 (en) 2015-01-29 2017-10-17 Koolbridge Solar, Inc. Smart appliances
US10536039B2 (en) 2017-12-12 2020-01-14 Koolbridge Solar, Inc. Hybrid wired-wireless communication system for delivery of power from two or more sources to smart appliances

Also Published As

Publication number Publication date
EP0576482A1 (fr) 1994-01-05
GB2269970A (en) 1994-02-23
GB9105613D0 (en) 1991-05-01
GB9319118D0 (en) 1993-12-01
GB2269970B (en) 1995-03-15
AU1366392A (en) 1992-10-21

Similar Documents

Publication Publication Date Title
WO1992016920A1 (fr) Systeme de signalisation
US4408186A (en) Power line communication over ground and neutral conductors of plural residential branch circuits
US5770996A (en) Transformer system for power line communications
US4075675A (en) Ground conductor monitoring system and method
US6172597B1 (en) Electricity distribution and/or power transmission network and filter for telecommunication over power lines
US4300126A (en) Method and apparatus, for power line communications using zero crossing load interruption
US5589813A (en) Data communication system of the field bus type with a twin lead for power supply to connect units and for data transmission between the units
US6476520B1 (en) Plug connection
US4480251A (en) Apparatus to monitor electrical cables, including splice joints and the like, for the ingress of moisture
US6417762B1 (en) Power line communication system using anti-resonance isolation and virtual earth ground signaling
EP0159916A2 (fr) Coupleur passif de signaux radio pour lignes de secteur
SK66096A3 (en) Network for electric energy distribution
US4885795A (en) Hospital digital data transfer system
US4622535A (en) Receiving circuit for a data transmission system
US3407400A (en) Theft control system
EP0124260A2 (fr) Laison à courant porteur au moyen du réseau d'alimentation
US3925728A (en) Induction watthour meter for power systems transmitting carrier communication signals
US5210523A (en) Noise suppression system and method
EP0356741A1 (fr) Procédé et dispositif de transmission de mesures par un tube métallique
US5977658A (en) Voltage doubling alternating current power supply
US6333625B1 (en) Fault localizing and identifying device for electric systems
US4068282A (en) Protective device for low current transmission circuits
EP1127279A1 (fr) Coupe-circuit electriques localises a l'aide d'un emetteur passif et d'un recepteur
GB2082406A (en) Monitoring electrical cables and joints for the ingress of moisture
CN2171117Y (zh) 线路故障自动报警器

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AT AU BB BG BR CA CH CS DE DK ES FI GB HU JP KP KR LK LU MG MN MW NL NO PL RO RU SD SE US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE BF BJ CF CG CH CI CM DE DK ES FR GA GB GN GR IT LU MC ML MR NL SE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 9319118.7

Country of ref document: GB

WWE Wipo information: entry into national phase

Ref document number: 1992906476

Country of ref document: EP

ENP Entry into the national phase

Ref country code: US

Ref document number: 1993 119087

Date of ref document: 19931008

Kind code of ref document: A

Format of ref document f/p: F

WWP Wipo information: published in national office

Ref document number: 1992906476

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA

WWW Wipo information: withdrawn in national office

Ref document number: 1992906476

Country of ref document: EP