FR2345771A1 - Remote detector alarm signalling system - has central control supplying energy to storage circuits in detectors for re-transmission when alarm is detected - Google Patents

Remote detector alarm signalling system - has central control supplying energy to storage circuits in detectors for re-transmission when alarm is detected

Info

Publication number
FR2345771A1
FR2345771A1 FR7608404A FR7608404A FR2345771A1 FR 2345771 A1 FR2345771 A1 FR 2345771A1 FR 7608404 A FR7608404 A FR 7608404A FR 7608404 A FR7608404 A FR 7608404A FR 2345771 A1 FR2345771 A1 FR 2345771A1
Authority
FR
France
Prior art keywords
signal
alarm
detected
detectors
detector
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Withdrawn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
FR7608404A
Other languages
French (fr)
Inventor
Albert Ducornait
Jacques Topart
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.)
Smith & Cie Ets
Original Assignee
Smith & Cie Ets
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 Smith & Cie Ets filed Critical Smith & Cie Ets
Priority to FR7608404A priority Critical patent/FR2345771A1/en
Publication of FR2345771A1 publication Critical patent/FR2345771A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B1/00—Systems for signalling characterised solely by the form of transmission of the signal
    • G08B1/08—Systems for signalling characterised solely by the form of transmission of the signal using electric transmission ; transformation of alarm signals to electrical signals from a different medium, e.g. transmission of an electric alarm signal upon detection of an audible alarm signal
    • 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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H02J13/00009—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using pulsed signals
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

Abstract

The alarm and surveillance system uses detectors (4) which are sensitive to a change from a determined state. The system also uses existing conductors (L) as a signal transmission channel. A known frequency signal is generated at each detector (4) in the event of state modification. The signal being identical for each detector. These signals are injected into existing conductors. The signals are received at a single remote unit (5). An alarm is triggered when the signals are received. A continuous signal is transmitted on to the line (L) from the remote unit (5). This signal has a frequency which is different from the detector (4) signal frequency. Each detector receives the signal from the remote unit and stores the signal energy. When state modification is detected, the stored energy is used to trigger signals onto the line.
FR7608404A 1976-03-23 1976-03-23 Remote detector alarm signalling system - has central control supplying energy to storage circuits in detectors for re-transmission when alarm is detected Withdrawn FR2345771A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7608404A FR2345771A1 (en) 1976-03-23 1976-03-23 Remote detector alarm signalling system - has central control supplying energy to storage circuits in detectors for re-transmission when alarm is detected

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7608404A FR2345771A1 (en) 1976-03-23 1976-03-23 Remote detector alarm signalling system - has central control supplying energy to storage circuits in detectors for re-transmission when alarm is detected

Publications (1)

Publication Number Publication Date
FR2345771A1 true FR2345771A1 (en) 1977-10-21

Family

ID=9170813

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7608404A Withdrawn FR2345771A1 (en) 1976-03-23 1976-03-23 Remote detector alarm signalling system - has central control supplying energy to storage circuits in detectors for re-transmission when alarm is detected

Country Status (1)

Country Link
FR (1) FR2345771A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027139A1 (en) * 1979-04-16 1981-04-22 Pittway Corporation Intrusion alarm system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027139A1 (en) * 1979-04-16 1981-04-22 Pittway Corporation Intrusion alarm system
EP0027139A4 (en) * 1979-04-16 1981-11-25 Pittway Corp Intrusion alarm system.

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Legal Events

Date Code Title Description
ST Notification of lapse