JPH045950B2 - - Google Patents

Info

Publication number
JPH045950B2
JPH045950B2 JP57197654A JP19765482A JPH045950B2 JP H045950 B2 JPH045950 B2 JP H045950B2 JP 57197654 A JP57197654 A JP 57197654A JP 19765482 A JP19765482 A JP 19765482A JP H045950 B2 JPH045950 B2 JP H045950B2
Authority
JP
Japan
Prior art keywords
sensing wire
relay
fire
sensing
current
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 - Lifetime
Application number
JP57197654A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5988659A (ja
Inventor
Toshiaki Doi
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.)
SWCC Corp
Original Assignee
Showa Electric Wire and Cable Co
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 Showa Electric Wire and Cable Co filed Critical Showa Electric Wire and Cable Co
Priority to JP57197654A priority Critical patent/JPS5988659A/ja
Publication of JPS5988659A publication Critical patent/JPS5988659A/ja
Publication of JPH045950B2 publication Critical patent/JPH045950B2/ja
Granted 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)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
JP57197654A 1982-11-12 1982-11-12 火災感知設備 Granted JPS5988659A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57197654A JPS5988659A (ja) 1982-11-12 1982-11-12 火災感知設備

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57197654A JPS5988659A (ja) 1982-11-12 1982-11-12 火災感知設備

Publications (2)

Publication Number Publication Date
JPS5988659A JPS5988659A (ja) 1984-05-22
JPH045950B2 true JPH045950B2 (OSRAM) 1992-02-04

Family

ID=16378089

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57197654A Granted JPS5988659A (ja) 1982-11-12 1982-11-12 火災感知設備

Country Status (1)

Country Link
JP (1) JPS5988659A (OSRAM)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2413635A (en) 2004-04-30 2005-11-02 Thorn Security Testing a fire detector sensor
JP5773662B2 (ja) * 2011-01-24 2015-09-02 大同信号株式会社 故障装置特定システム
CN103489277B (zh) * 2013-09-26 2015-08-26 胡亨华 在线监控电气线路电阻参数的火灾预警系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5644864A (en) * 1979-09-19 1981-04-24 Hitachi Cable Ltd Abnormal point sensing device for detection line

Also Published As

Publication number Publication date
JPS5988659A (ja) 1984-05-22

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