GB1319615A - Apparatus for supervising the continuity of leads in alarm installations - Google Patents

Apparatus for supervising the continuity of leads in alarm installations

Info

Publication number
GB1319615A
GB1319615A GB4420970A GB4420970A GB1319615A GB 1319615 A GB1319615 A GB 1319615A GB 4420970 A GB4420970 A GB 4420970A GB 4420970 A GB4420970 A GB 4420970A GB 1319615 A GB1319615 A GB 1319615A
Authority
GB
United Kingdom
Prior art keywords
line
transistor
control panel
alarm
signal
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.)
Expired
Application number
GB4420970A
Other languages
English (en)
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.)
Cerberus AG
Original Assignee
Cerberus AG
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 Cerberus AG filed Critical Cerberus AG
Publication of GB1319615A publication Critical patent/GB1319615A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Fire Alarms (AREA)
  • Alarm Systems (AREA)
GB4420970A 1969-09-16 1970-09-16 Apparatus for supervising the continuity of leads in alarm installations Expired GB1319615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1398169A CH495022A (de) 1969-09-16 1969-09-16 Feuermeldeanlage mit einer Vorrichtung zu deren Leitungsüberwachung

Publications (1)

Publication Number Publication Date
GB1319615A true GB1319615A (en) 1973-06-06

Family

ID=4396930

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4420970A Expired GB1319615A (en) 1969-09-16 1970-09-16 Apparatus for supervising the continuity of leads in alarm installations

Country Status (9)

Country Link
US (1) US3665461A (de)
JP (1) JPS4822038B1 (de)
CA (1) CA957745A (de)
CH (1) CH495022A (de)
DE (1) DE2038795C3 (de)
FR (1) FR2061175A5 (de)
GB (1) GB1319615A (de)
SE (1) SE359180B (de)
ZA (1) ZA706196B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6259363B1 (en) 1998-05-20 2001-07-10 Apollo Fire Detectors Limited Detector removal signalling device

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702468A (en) * 1970-08-10 1972-11-07 Nittan Co Ltd Fire alarming system
US3980995A (en) * 1974-12-17 1976-09-14 Tulio Vasquez Alarm system
US4103299A (en) * 1976-10-12 1978-07-25 Cutler-Hammer, Inc. Two-wire pilot device solid state control system
DE2713280C3 (de) * 1977-03-25 1986-10-23 Esser Sicherheitstechnik GmbH & Co KG, 4040 Neuss Funktionsüberprüfbare Feuermelderanlage
US4141007A (en) * 1977-04-22 1979-02-20 Kavasilios Michael A Central alarm conditioning detecting and alerting system
US4191946A (en) * 1977-10-20 1980-03-04 Gonzalez Raymond J Warning apparatus with a line integrity supervisory circuit
JPS595955B2 (ja) * 1979-07-27 1984-02-08 ホーチキ株式会社 火災報知機
US4385287A (en) * 1979-12-07 1983-05-24 Securicor Granley Systems Limited Multiple alarm condition detection and signalling
ATE12841T1 (de) * 1980-02-07 1985-05-15 Schlumberger Electronics Uk Elektrizitaetszaehler.
DE3122474A1 (de) * 1981-06-05 1982-12-23 Hekatron GmbH, 7811 Sulzburg "schaltungsanordnung zur uebertragung von messwerten, insbesondere in einem brandmeldesystem, zu einer zentrale"
EP0066879A1 (de) * 1981-06-05 1982-12-15 Hekatron GmbH Schaltungsanordnung zur Übertragung von Messwerten, insbesondere in einem Brandmeldesystem zu einer Zentrale
JPS58103718U (ja) * 1981-12-30 1983-07-14 松下電器産業株式会社 包装箱
US4481502A (en) * 1982-03-26 1984-11-06 Dawson N Rick Central smoke alarm and annunciator
US4512033A (en) * 1982-11-29 1985-04-16 C-Cor Labs, Inc. Remote level adjustment system for use in a multi-terminal communications system
US4648123A (en) * 1982-11-29 1987-03-03 C-Cor Labs, Inc. Remote level measurement system for use in a multi-terminal communications system
US4538137A (en) * 1983-01-20 1985-08-27 Nittan Company, Limited Fire detector
GB2151058A (en) * 1983-12-08 1985-07-10 Sound Diffusion Plc Fire alarm systems with incipient hyper-sensitivity monitoring
GB8429487D0 (en) * 1984-11-22 1985-01-03 Thorn Emi Automation Ltd Electrical apparatus
US4977527A (en) * 1988-04-14 1990-12-11 Fike Corporation Threshold compensation and calibration in distributed environmental detection system for fire detection and suppression
US5138562A (en) * 1988-04-14 1992-08-11 Fike Corporation Environmental protection system useful for the fire detection and suppression
US5008840A (en) * 1988-05-27 1991-04-16 Napco Security Systems, Inc. Multi-zone microprocessor fire control apparatus
US4991123A (en) * 1989-01-06 1991-02-05 Cerberus A.G. Alarm system
US5822544A (en) * 1990-07-27 1998-10-13 Executone Information Systems, Inc. Patient care and communication system
US6958706B2 (en) * 1990-07-27 2005-10-25 Hill-Rom Services, Inc. Patient care and communication system
US5594786A (en) 1990-07-27 1997-01-14 Executone Information Systems, Inc. Patient care and communication system
JPH06130124A (ja) * 1992-10-20 1994-05-13 Mitsubishi Electric Corp しきい値を有する信号入力回路のテスト回路
US6163263A (en) * 1999-02-02 2000-12-19 Pittway Corporation Circuitry for electrical device in multi-device communications system
US6567001B1 (en) 2000-02-24 2003-05-20 Simplex Time Recorder Co. Fire control panel monitoring for degradation of wiring integrity during alarm state
US6791453B1 (en) 2000-08-11 2004-09-14 Walter Kidde Portable Equipment, Inc. Communication protocol for interconnected hazardous condition detectors, and system employing same
US7126487B2 (en) * 2004-10-15 2006-10-24 Ranco Incorporated Of Delaware Circuit and method for prioritization of hazardous condition messages for interconnected hazardous condition detectors
US7333010B2 (en) * 2005-03-25 2008-02-19 Simplexgrinnell Lp Method and apparatus for verifying operation of notification appliances during low input voltage condition
EP1777671A1 (de) * 2005-10-19 2007-04-25 Honeywell International, Inc. Überwachung der Verdrahtung eines Alarmsystems
US8063763B2 (en) * 2008-11-25 2011-11-22 Simplexgrinnell Lp System for testing NAC operability using reduced operating voltage
ES2367999T5 (es) * 2006-05-11 2014-08-19 Siemens Aktiengesellschaft Procedimiento y dispositivo para vigilar perturbaciones en una línea de aviso de una instalación de aviso de incendio
DE102008003799B4 (de) * 2008-01-10 2021-06-10 Robert Bosch Gmbh Überwachungsvorrichtung für ein Meldesystem, Meldesystem und Verfahren zur Überwachung des Meldesystems
DE102008015999B4 (de) * 2008-03-27 2011-04-21 Novar Gmbh Übertragungsweg - Prüfverfahren für eine Gefahrenmeldeanlage
DE102008028631B4 (de) * 2008-06-18 2011-06-22 GEZE GmbH, 71229 Leitungsüberwachung von Rauchschaltern
FR2934401B1 (fr) * 2008-07-28 2010-08-13 Legrand France Installation perfectionnee de securite et procede de surveillance correspondant
US8232884B2 (en) * 2009-04-24 2012-07-31 Gentex Corporation Carbon monoxide and smoke detectors having distinct alarm indications and a test button that indicates improper operation
US8836532B2 (en) 2009-07-16 2014-09-16 Gentex Corporation Notification appliance and method thereof
DE102011002926B4 (de) 2011-01-20 2014-11-06 Geze Gmbh Leitungsüberwachung von Rauchschaltern
DE102016200913A1 (de) 2016-01-22 2017-07-27 Hekatron Vertriebs Gmbh Vorrichtung zur Leitungsüberwachung von Gefahrenmeldern und Feststellvorrichtungen
DE102016200914A1 (de) 2016-01-22 2017-07-27 Hekatron Vertriebs Gmbh Vorrichtung zur Leitungsüberwachung an einer Feststelleinrichtung von Brandschutztüren mit Rauchschaltern
DE102018112299B4 (de) 2018-05-23 2020-12-03 Minimax Gmbh & Co. Kg Einrichtung, Verfahren und Steuermodul zur Überwachung einer Zweidrahtleitung
US10832557B2 (en) * 2019-04-11 2020-11-10 Honeywell International Inc. Operating a fire alarm system
CN112242049A (zh) 2019-07-19 2021-01-19 开利公司 警报发声部件的状态检测

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072827A (en) * 1957-04-01 1963-01-08 Joy Mfg Co Circuit protecting device
US3192506A (en) * 1960-03-04 1965-06-29 Sargrove Electronics Ltd Electronic indicator system more particularly for use in mines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6259363B1 (en) 1998-05-20 2001-07-10 Apollo Fire Detectors Limited Detector removal signalling device

Also Published As

Publication number Publication date
DE2038795A1 (de) 1971-04-08
US3665461A (en) 1972-05-23
DE2038795B2 (de) 1973-05-03
JPS4822038B1 (de) 1973-07-03
FR2061175A5 (de) 1971-06-18
SE359180B (de) 1973-08-20
CA957745A (en) 1974-11-12
ZA706196B (en) 1971-05-27
CH495022A (de) 1970-08-15
DE2038795C3 (de) 1973-11-29

Similar Documents

Publication Publication Date Title
GB1319615A (en) Apparatus for supervising the continuity of leads in alarm installations
US4613848A (en) Multiple-zone intrusion detection system
US3848231A (en) Alarm system utilizing pulse position modulation and dual conductor sensor
GB1401146A (en) Fire alarm system with remote central station
GB1338690A (en) Fire alarm system
GB1140294A (en) Fire alarm system with monitoring device for fire alarms connected in groups to a central station
US4282519A (en) Interconnection of alarms of smoke detectors with distinguishable alarms
US3676680A (en) Ionization fire alarm with insulation monitoring system
EP0050624A1 (de) Elektrisches überwachungs-, steuer- und datenaufnahmesystem.
US3858192A (en) Intrusion detector alarm system having logic circuitry for inhibiting false alarms
US4030095A (en) Pulsed alarm system
GB1472941A (en) Emergency alarm systems
US3566399A (en) Control station monitoring system for remote stations
US2684475A (en) Supervised signaling system
US3676877A (en) Fire alarm system with fire zone locator using zener diode voltage monitoring
GB1154518A (en) Improvements in Speed Sensing Devices
US3653041A (en) Annunciator system
KR880701029A (ko) 전기회로 보호장치 및 방법
CA1071731A (en) Apparatus for supervising leads interconnecting a plurality of self-contained abnormal condition sensing and alarm annunciating units
EP0071752B1 (de) Feueralarm-System
EP0011451A1 (de) Sicherheitsalarmanlagen
US3810163A (en) Residential alarm system
GB1532173A (en) Two-wire systems including signal receiving sections and detection sections with protected relays
ES8300208A1 (es) Una instalacion de control para una serie de dispositivos decontrol individual de calor.
SU611236A1 (ru) Устройство дл аварийной телесигнализации

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee