CA1178678A - Bidirectional, interactive fire detection system - Google Patents

Bidirectional, interactive fire detection system

Info

Publication number
CA1178678A
CA1178678A CA000396953A CA396953A CA1178678A CA 1178678 A CA1178678 A CA 1178678A CA 000396953 A CA000396953 A CA 000396953A CA 396953 A CA396953 A CA 396953A CA 1178678 A CA1178678 A CA 1178678A
Authority
CA
Canada
Prior art keywords
signal
transponder
controller
pulse
line
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
CA000396953A
Other languages
English (en)
French (fr)
Inventor
John M. Wynne
William R. Vogt
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.)
Baker Industries Inc
Original Assignee
Baker Industries Inc
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
Priority claimed from US06/243,401 external-priority patent/US4394655A/en
Priority claimed from US06/345,909 external-priority patent/US4470047A/en
Application filed by Baker Industries Inc filed Critical Baker Industries Inc
Application granted granted Critical
Publication of CA1178678A publication Critical patent/CA1178678A/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
    • 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
    • G08B25/04—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 a single signalling line, e.g. in a closed loop

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
CA000396953A 1981-03-13 1982-02-24 Bidirectional, interactive fire detection system Expired CA1178678A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US06/243,401 US4394655A (en) 1981-03-13 1981-03-13 Bidirectional, interactive fire detection system
US243,401 1981-03-13
US06/345,909 US4470047A (en) 1982-02-04 1982-02-04 Bidirectional, interactive fire detection system
US345,909 1982-02-04

Publications (1)

Publication Number Publication Date
CA1178678A true CA1178678A (en) 1984-11-27

Family

ID=26935826

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000396953A Expired CA1178678A (en) 1981-03-13 1982-02-24 Bidirectional, interactive fire detection system

Country Status (5)

Country Link
CA (1) CA1178678A (ja)
CH (2) CH660927A5 (ja)
DE (2) DE3249787C2 (ja)
FR (1) FR2501880B1 (ja)
GB (2) GB2098766B (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO162317C (no) * 1983-05-19 1992-02-06 Hochiki Co Brannalarmanlegg
JPS60117939A (ja) * 1983-11-30 1985-06-25 Matsushita Electric Works Ltd 情報伝送方式
DE3411129A1 (de) * 1984-03-26 1985-10-03 Fritz Fuss Kg, 7470 Albstadt Schaltungsanordnung fuer eine gefahrenmeldeanlage
GB2173618B (en) * 1985-04-12 1988-09-14 Emi Ltd Alarm monitoring installation
DE3622800A1 (de) * 1985-07-26 1987-01-29 Mitec Moderne Ind Gmbh Messanordnung mit einer vielzahl von messeinheiten
DE3614692A1 (de) * 1986-04-30 1987-11-05 Nixdorf Computer Ag Gefahrenmeldeanlage
JPS6324394A (ja) * 1986-07-17 1988-02-01 ニツタン株式会社 環境異常警報設備
FR2636157A1 (fr) * 1988-09-08 1990-03-09 Hugon Emile Centrale d'adresse et de programmation de detecteur d'alarme incendie
DE4036639A1 (de) * 1990-11-16 1992-05-21 Esser Sicherheitstechnik Verfahren zur ermittlung der konfiguration der melder einer gefahrenmeldeanlage und fuer die anlagenkonfigurationsbestimmung geeigneter melder
DE29510494U1 (de) * 1995-06-28 1995-08-31 Siemens AG, 80333 München System aus Rauchmelder und Auswerteeinrichtung
ATE237167T1 (de) 1999-05-21 2003-04-15 Infineon Technologies Ag Verfahren zur verhinderung widerrechtlicher benutzung von chipkarten
DE10000412A1 (de) * 2000-01-07 2001-07-26 Kremser Peter Fa Rauchmelder
US6791453B1 (en) 2000-08-11 2004-09-14 Walter Kidde Portable Equipment, Inc. Communication protocol for interconnected hazardous condition detectors, and system employing same
CN113990023B (zh) * 2021-10-26 2023-01-24 无锡商业职业技术学院 一种用于光电式烟雾探测器的自校准、补偿电路和方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1297008B (de) * 1967-01-11 1969-06-04 Siemens Ag Meldeanlage mit in einer zweiadrigen Schleife parallelgeschalteten Meldern
DE1812505C3 (de) * 1968-11-27 1980-01-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Fernwirksystem mit Mehrfachausnutzung eines Übertragungskanals
DE2147022A1 (de) * 1971-09-21 1973-04-05 Licentia Gmbh Schaltungsanordnung zur erzielung einer groesseren empfindlichkeit bei einer stoerwertmeldeanlage mit schwankenden stoerpegeln
DE2533330C3 (de) * 1975-07-25 1981-08-13 Siemens AG, 1000 Berlin und 8000 München Verfahren und Einrichtung zur Übertragung von Meßwerten in einem Brandmeldesystem
GB1556062A (en) * 1975-08-28 1979-11-21 Sumitomo Chemical Co Centralised monitoring system for gas leakage
DE2713640A1 (de) * 1977-03-28 1978-10-12 Kraftwerk Union Ag Verfahren zur ueberwachung einer anlage und anordnung zur durchfuehrung des verfahrens
US4321592A (en) * 1978-05-30 1982-03-23 American District Telegraph Company Multiple sensor intrusion detection system
DE2836760C2 (de) * 1978-08-23 1983-11-17 Dr. Alfred Ristow GmbH & Co, 7500 Karlsruhe Elektronisches Fernüberwachungssystem
DE2946169C2 (de) * 1979-11-15 1986-12-11 Brown, Boveri & Cie Ag, 6800 Mannheim Verfahren zum Ermitteln des Zustandes betimmter Alarmgeber einer Überwachungsanlage

Also Published As

Publication number Publication date
FR2501880B1 (fr) 1985-12-20
GB2098766A (en) 1982-11-24
GB2146819B (en) 1985-10-23
GB8426372D0 (en) 1984-11-21
DE3207993C2 (de) 1989-05-18
CH660927A5 (de) 1987-05-29
DE3249787C2 (ja) 1988-06-01
FR2501880A1 (fr) 1982-09-17
GB2098766B (en) 1985-07-17
DE3207993A1 (de) 1983-03-03
CH660926A5 (de) 1987-05-29
GB2146819A (en) 1985-04-24

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry