DE3671120D1 - METHOD AND DEVICE FOR THE OPERATIONAL MONITORING OF OPTICAL SMOKE DETECTORS. - Google Patents

METHOD AND DEVICE FOR THE OPERATIONAL MONITORING OF OPTICAL SMOKE DETECTORS.

Info

Publication number
DE3671120D1
DE3671120D1 DE8686110310T DE3671120T DE3671120D1 DE 3671120 D1 DE3671120 D1 DE 3671120D1 DE 8686110310 T DE8686110310 T DE 8686110310T DE 3671120 T DE3671120 T DE 3671120T DE 3671120 D1 DE3671120 D1 DE 3671120D1
Authority
DE
Germany
Prior art keywords
optical
signal
detectors
processing unit
central processing
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
DE8686110310T
Other languages
German (de)
Inventor
Peer Dr Ing Thilo
Karsten Dipl Ing Poulsen
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DE8686110310T priority Critical patent/DE3671120D1/en
Application granted granted Critical
Publication of DE3671120D1 publication Critical patent/DE3671120D1/en
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
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/005—Alarm systems in which substations are interrogated in succession by a central station with substations connected in series, e.g. cascade
    • 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
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
    • G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1. Method for monitoring the operation of optical smoke detectors in a fire alarm system operated according to the pulse signalling principe, in which fire alarm system the individual detectors, possibly of different kinds, such as ionisation, heat and optical smoke detectors, on a signalling line are respectively interrogated from the central processing unit in respect of their test values, evaluated in the central processing unit and alarm and fault criteria are derived, the individual detectors, which have a corresponding receiving device, being actuable by means of a control instruction from the central processing unit, characterized in that, during manufacture of the optical smole detectors (RM), they are tuned to issue, in the event of the absence of back scattering, a certain test signal, which differs from the rest signal and from the alarm signal, in that the optical smoke detectors have the receiving device for the control instruction, in that, at predeterminable time intervals, the optical transmission device of the smoke detector having a phototransmitter (LED), a test chamber (MK) and an optical receiver (FD) can be changed in a predeterminable manner by means of the control instruction so that the relevant smoke detector issues the particular, preset test signal, and in that the test value interrogated as a result of this, which corresponds to the particular test signal, is recognised in the central processing unit as a function signal and the absence of the function signal is indicated as a fault.
DE8686110310T 1985-07-29 1986-07-25 METHOD AND DEVICE FOR THE OPERATIONAL MONITORING OF OPTICAL SMOKE DETECTORS. Expired - Fee Related DE3671120D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8686110310T DE3671120D1 (en) 1985-07-29 1986-07-25 METHOD AND DEVICE FOR THE OPERATIONAL MONITORING OF OPTICAL SMOKE DETECTORS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3527109 1985-07-29
DE8686110310T DE3671120D1 (en) 1985-07-29 1986-07-25 METHOD AND DEVICE FOR THE OPERATIONAL MONITORING OF OPTICAL SMOKE DETECTORS.

Publications (1)

Publication Number Publication Date
DE3671120D1 true DE3671120D1 (en) 1990-06-13

Family

ID=6277060

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686110310T Expired - Fee Related DE3671120D1 (en) 1985-07-29 1986-07-25 METHOD AND DEVICE FOR THE OPERATIONAL MONITORING OF OPTICAL SMOKE DETECTORS.

Country Status (3)

Country Link
EP (1) EP0213383B1 (en)
AT (1) ATE52632T1 (en)
DE (1) DE3671120D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9679468B2 (en) * 2014-04-21 2017-06-13 Tyco Fire & Security Gmbh Device and apparatus for self-testing smoke detector baffle system
US9659485B2 (en) 2014-04-23 2017-05-23 Tyco Fire & Security Gmbh Self-testing smoke detector with integrated smoke source
CN109617600B (en) * 2018-12-28 2020-09-15 东南大学 Detection pulse waveform self-debugging system and method based on PON link fault recognition

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3307616A1 (en) * 1983-03-03 1984-09-06 Siemens AG, 1000 Berlin und 8000 München ARRANGEMENT FOR SWITCHING SINGLE DETECTORS INTO INSPECTION MODE IN A HAZARD ALARM SYSTEM
JPS59172094A (en) * 1983-03-21 1984-09-28 能美防災株式会社 Optoelectric smoke sensor with smoke detecting function tester
DE3313137A1 (en) * 1983-04-12 1984-10-18 Siemens AG, 1000 Berlin und 8000 München CIRCUIT ARRANGEMENT FOR CANCELING NOISE IN OPTICAL SMOKE DETECTORS

Also Published As

Publication number Publication date
EP0213383B1 (en) 1990-05-09
ATE52632T1 (en) 1990-05-15
EP0213383A1 (en) 1987-03-11

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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