DE3751417T2 - Übertragungsschaltung bei einrichtungen zur verhinderung von katastrophen. - Google Patents

Übertragungsschaltung bei einrichtungen zur verhinderung von katastrophen.

Info

Publication number
DE3751417T2
DE3751417T2 DE3751417T DE3751417T DE3751417T2 DE 3751417 T2 DE3751417 T2 DE 3751417T2 DE 3751417 T DE3751417 T DE 3751417T DE 3751417 T DE3751417 T DE 3751417T DE 3751417 T2 DE3751417 T2 DE 3751417T2
Authority
DE
Germany
Prior art keywords
devices
transmission circuit
prevent disasters
disasters
prevent
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 - Fee Related
Application number
DE3751417T
Other languages
English (en)
Other versions
DE3751417D1 (de
Inventor
Akira Igarashi
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.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai Kogyo 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 Nohmi Bosai Kogyo Co Ltd filed Critical Nohmi Bosai Kogyo Co Ltd
Publication of DE3751417D1 publication Critical patent/DE3751417D1/de
Application granted granted Critical
Publication of DE3751417T2 publication Critical patent/DE3751417T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G08B25/04—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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel
    • G08B26/002—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel only replying the state of the sensor
    • 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
    • G08B29/18—Prevention or correction of operating errors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Alarm Systems (AREA)
  • Small-Scale Networks (AREA)
  • Fire Alarms (AREA)
DE3751417T 1986-05-28 1987-05-18 Übertragungsschaltung bei einrichtungen zur verhinderung von katastrophen. Expired - Fee Related DE3751417T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61123068A JP2657211B2 (ja) 1986-05-28 1986-05-28 防災設備の送信回路
PCT/JP1987/000314 WO1987007418A1 (fr) 1986-05-28 1987-05-18 Circuit de transmission pour installations permettant d'eviter des catastrophes

Publications (2)

Publication Number Publication Date
DE3751417D1 DE3751417D1 (de) 1995-08-24
DE3751417T2 true DE3751417T2 (de) 1996-03-14

Family

ID=14851396

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3751417T Expired - Fee Related DE3751417T2 (de) 1986-05-28 1987-05-18 Übertragungsschaltung bei einrichtungen zur verhinderung von katastrophen.

Country Status (5)

Country Link
US (1) US4847593A (de)
EP (1) EP0269747B1 (de)
JP (1) JP2657211B2 (de)
DE (1) DE3751417T2 (de)
WO (1) WO1987007418A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0683228B2 (ja) * 1988-07-29 1994-10-19 ホーチキ株式会社 防災監視装置
JP2829733B2 (ja) * 1989-01-31 1998-12-02 能美防災株式会社 防災設備
US5151683A (en) * 1989-01-31 1992-09-29 Nohmi Bosai Co., Ltd. Power supply control device in fire alarm system
JP2721916B2 (ja) * 1989-06-29 1998-03-04 能美防災株式会社 火災報知設備の断線監視装置
JP3292345B2 (ja) * 1994-03-29 2002-06-17 能美防災株式会社 火災報知設備の中継器および火災報知設備の受信部
US7145466B2 (en) 2003-09-12 2006-12-05 Simplexgrinnell Lp National security warning system integrated with building fire alarm notification system
US7295127B2 (en) 2003-09-12 2007-11-13 Simplexgrinnell Lp National security warning system integrated with building fire alarm notification system
US7714733B2 (en) 2003-09-12 2010-05-11 Simplexgrinnell Lp Emergency warning system integrated with building hazard alarm notification system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508260A (en) * 1968-09-03 1970-04-21 Edward S Stein Transponder monitoring system
US3713142A (en) * 1972-01-17 1973-01-23 Signatron Alarm system
US4044351A (en) * 1974-06-24 1977-08-23 Walter Kidde & Company, Inc. System monitor with innate line security ability
JPS51122398A (en) * 1975-04-18 1976-10-26 Meisei Electric Co Ltd Warning system
US4206449A (en) * 1977-07-27 1980-06-03 American District Telegraph Company Multiple sensor intrusion alarm system
US4658243A (en) * 1983-11-08 1987-04-14 Nittan Company, Limited Surveillance control apparatus for security system
JPS6161549A (ja) * 1984-09-03 1986-03-29 Nec Corp 調歩式回線アダプタの診断方式
JPH05225993A (ja) * 1992-02-13 1993-09-03 Kunio Shimizu リン酸型燃料電池

Also Published As

Publication number Publication date
WO1987007418A1 (fr) 1987-12-03
DE3751417D1 (de) 1995-08-24
EP0269747A1 (de) 1988-06-08
JP2657211B2 (ja) 1997-09-24
EP0269747A4 (de) 1989-08-29
JPS62279491A (ja) 1987-12-04
EP0269747B1 (de) 1995-07-19
US4847593A (en) 1989-07-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee