ATE52632T1 - METHOD AND DEVICE FOR OPERATIONAL MONITORING OF OPTICAL SMOKE DETECTORS. - Google Patents

METHOD AND DEVICE FOR OPERATIONAL MONITORING OF OPTICAL SMOKE DETECTORS.

Info

Publication number
ATE52632T1
ATE52632T1 AT86110310T AT86110310T ATE52632T1 AT E52632 T1 ATE52632 T1 AT E52632T1 AT 86110310 T AT86110310 T AT 86110310T AT 86110310 T AT86110310 T AT 86110310T AT E52632 T1 ATE52632 T1 AT E52632T1
Authority
AT
Austria
Prior art keywords
optical
signal
detectors
processing unit
central processing
Prior art date
Application number
AT86110310T
Other languages
German (de)
Inventor
Peer Dr-Ing Thilo
Karsten Dipl-Ing Poulsen
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
Application granted granted Critical
Publication of ATE52632T1 publication Critical patent/ATE52632T1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 SYSTEMS, e.g. PERSONAL 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.
AT86110310T 1985-07-29 1986-07-25 METHOD AND DEVICE FOR OPERATIONAL MONITORING OF OPTICAL SMOKE DETECTORS. ATE52632T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3527109 1985-07-29
EP86110310A EP0213383B1 (en) 1985-07-29 1986-07-25 Method and device for monitoring the operation of optical smoke detectors

Publications (1)

Publication Number Publication Date
ATE52632T1 true ATE52632T1 (en) 1990-05-15

Family

ID=6277060

Family Applications (1)

Application Number Title Priority Date Filing Date
AT86110310T ATE52632T1 (en) 1985-07-29 1986-07-25 METHOD AND DEVICE FOR 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-tuning system and method based on PON link fault identification

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
EP0213383A1 (en) 1987-03-11
DE3671120D1 (en) 1990-06-13

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee