DE2204101C2 - Feuermeldeanlage - Google Patents

Feuermeldeanlage

Info

Publication number
DE2204101C2
DE2204101C2 DE2204101A DE2204101A DE2204101C2 DE 2204101 C2 DE2204101 C2 DE 2204101C2 DE 2204101 A DE2204101 A DE 2204101A DE 2204101 A DE2204101 A DE 2204101A DE 2204101 C2 DE2204101 C2 DE 2204101C2
Authority
DE
Germany
Prior art keywords
line
voltage
fire alarm
alarm system
zener diode
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
DE2204101A
Other languages
German (de)
English (en)
Other versions
DE2204101B1 (de
Inventor
Hayami Hino Tokio Yuasa (Japan)
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.)
Nittan Co Ltd
Original Assignee
Nittan Co Ltd
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 Nittan Co Ltd filed Critical Nittan Co Ltd
Publication of DE2204101B1 publication Critical patent/DE2204101B1/de
Application granted granted Critical
Publication of DE2204101C2 publication Critical patent/DE2204101C2/de
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
DE2204101A 1971-02-04 1972-01-28 Feuermeldeanlage Expired DE2204101C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP403271 1971-02-04

Publications (2)

Publication Number Publication Date
DE2204101B1 DE2204101B1 (de) 1973-07-05
DE2204101C2 true DE2204101C2 (de) 1974-01-31

Family

ID=11573607

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2204101A Expired DE2204101C2 (de) 1971-02-04 1972-01-28 Feuermeldeanlage

Country Status (4)

Country Link
US (1) US3797008A (OSRAM)
CA (1) CA944454A (OSRAM)
DE (1) DE2204101C2 (OSRAM)
FR (1) FR2124329B1 (OSRAM)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016480A (en) * 1974-03-04 1977-04-05 Zenith Radio Corporation Dual function coupling system and method
US4148019A (en) * 1975-03-05 1979-04-03 Thomas Industries Inc. Security alarm transmission system
DE2539180A1 (de) * 1975-09-03 1977-03-24 Siemens Ag Meldeanlage, vorzugsweise feuermeldeanlage
DE2638068C3 (de) * 1976-08-24 1986-11-13 Siemens AG, 1000 Berlin und 8000 München Brandmeldeanlage mit mehreren über eine Meldeschleife betreibbaren Meldern
DE2641489C2 (de) * 1976-09-15 1984-05-30 Siemens AG, 1000 Berlin und 8000 München Verfahren zur Übertragung von Meßwerten in einem Brandmeldesystem
US4101887A (en) * 1976-09-24 1978-07-18 Walter Kidde And Co., Inc. Monitored fire protection system
US4134111A (en) * 1976-12-16 1979-01-09 N.V. Tools Limited Aerosol detector and method
US4250484A (en) * 1977-11-21 1981-02-10 Marine Electric Corporation Alarm system for detecting a plurality of different alarm conditions
US4282517A (en) * 1977-12-09 1981-08-04 Potter Electric Signal Company Automatic ringback for direct current monitoring system
USRE30394E (en) 1978-04-04 1980-09-02 Westinghouse Electric Corp. Signal bandpass filter apparatus
US4385287A (en) * 1979-12-07 1983-05-24 Securicor Granley Systems Limited Multiple alarm condition detection and signalling
CA1148279A (en) * 1979-12-14 1983-06-14 Andreas Scheidweiler Ionization smoke detector with increased operational reliability
JPS61229195A (ja) * 1985-04-03 1986-10-13 株式会社日本自動車部品総合研究所 信号伝送システム
DE10051329C2 (de) 2000-10-10 2003-12-11 Job Lizenz Gmbh & Co Kg Gefahrenmeldeanlage
EP1777671A1 (en) * 2005-10-19 2007-04-25 Honeywell International, Inc. Monitoring of alarm system wiring
US8477042B2 (en) * 2008-02-08 2013-07-02 Siemens Industry, Inc. Apparatus for signaling different notification appliance circuit configurations
DE102008048929B4 (de) * 2008-09-25 2010-06-24 Novar Gmbh Prüfung der Meldelinien einer Gefahrenmeldeanlage
ES2384146A1 (es) * 2010-02-02 2012-07-02 General Electric Company Circuito de detección, sistema de detección y método para la construcción de sistemas de detección.

Also Published As

Publication number Publication date
US3797008A (en) 1974-03-12
FR2124329B1 (OSRAM) 1975-10-24
CA944454A (en) 1974-03-26
DE2204101B1 (de) 1973-07-05
AU3801772A (en) 1973-07-26
FR2124329A1 (OSRAM) 1972-09-22

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee