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
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.
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)
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)
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 |
-
1986
- 1986-07-25 AT AT86110310T patent/ATE52632T1/en not_active IP Right Cessation
- 1986-07-25 EP EP86110310A patent/EP0213383B1/en not_active Expired - Lifetime
- 1986-07-25 DE DE8686110310T patent/DE3671120D1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ATE52632T1 (en) | 1990-05-15 |
EP0213383B1 (en) | 1990-05-09 |
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 |