EP0149097A3 - Method and arrangement for the failsafe alarm evaluation of a signal line of a hazard signal arrangement - Google Patents

Method and arrangement for the failsafe alarm evaluation of a signal line of a hazard signal arrangement Download PDF

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Publication number
EP0149097A3
EP0149097A3 EP84114714A EP84114714A EP0149097A3 EP 0149097 A3 EP0149097 A3 EP 0149097A3 EP 84114714 A EP84114714 A EP 84114714A EP 84114714 A EP84114714 A EP 84114714A EP 0149097 A3 EP0149097 A3 EP 0149097A3
Authority
EP
European Patent Office
Prior art keywords
signal
swsi
arrangement
threshold signal
window discriminator
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.)
Withdrawn
Application number
EP84114714A
Other languages
German (de)
French (fr)
Other versions
EP0149097A2 (en
Inventor
Joachim Böhm
Hans Michael Dipl.-Ing. Sojka
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
Publication of EP0149097A2 publication Critical patent/EP0149097A2/en
Publication of EP0149097A3 publication Critical patent/EP0149097A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
    • 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
    • G08B29/20—Calibration, including self-calibrating arrangements
    • G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components

Abstract

Die Erfindung bezieht sich auf ein Verfahren und eine Anordnung zur störungssicheren Alarmauswertung einer Meldelinie (Primärleitung) einer Gefahrenmeldeanlage, bei der in einer Zentrale (Z) die jeweiligen Meldelinien-Zustände ausgewertet werden. Ein auf der Meldelinie (ML) auftreten­ des Ereignis erzeugt am Ausgang (A) eines in der Zentrale (Z) angeordneten Fensterdiskriminators (FD) ein Schwellensig­ nal (SWSI), solange das Eingangssignal des Fensterdiskrimi­ nators (FD) einen oberen oder unteren Schwellenwert über­ schreitet. Mit einer dem Fensterdiskriminator (FD) nachge­ schalteten digitalen Störgrößen-Ausblendeinrichtung (SAE) wird mit dem Auftreten des Schwellensignals (SWSI) perio­ disch eine vorgegebene Zeit lang geprüft, ob das Schwellen­ signal (SWSI) noch ansteht. Erst nach Ablauf dieser vorgege­ benen Zeit wird ein Ausgangssignal (ASI) an eine Meldungs­ auswerteeinrichtung (MAE) gegeben, wobei mit dem Ver­ schwinden des Ereignisses der Prüfvorgang abgebrochen wird und erneut beginnt, wenn erneut ein Schwellensignal (SWSI) ansteht. Die Störgrößen-Ausblendeinrichtungen (SAE) weist einen Taktgenerator (TG) und zwei seriell oder parallel angeordnete und miteinander verknüpfte Speichere­ lementen (FF1, FF2) auf, die mit dem Schwellensignal (SWSI) und dem Taktsignal (TS) beaufschlagt sind. The invention relates to a method and a Arrangement for fail-safe alarm evaluation of a Alarm line (primary line) of a hazard alarm system, at in a control center (Z) the respective zone status be evaluated. An occur on the detection line (ML) of the event generated at the output (A) in the control center (Z) arranged window discriminator (FD) a threshold signal nal (SWSI), as long as the input signal of the window discriminator nators (FD) above an upper or lower threshold steps. With the window discriminator (FD) switched digital disturbance suppression device (SAE) is perio with the appearance of the threshold signal (SWSI) for a predetermined time, it checks whether the swelling signal (SWSI) is still pending. Only after this has expired At that time, an output signal (ASI) is sent to a message evaluation device (MAE) given, with the Ver disappearance of the event the test process is canceled and starts again when there is another threshold signal (SWSI) is pending. The disturbance blanking devices (SAE) has one clock generator (TG) and two in series or memories arranged in parallel and linked together elements (FF1, FF2) with the threshold signal (SWSI) and the clock signal (TS) are applied.

EP84114714A 1983-12-22 1984-12-04 Method and arrangement for the failsafe alarm evaluation of a signal line of a hazard signal arrangement Withdrawn EP0149097A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3346527 1983-12-22
DE19833346527 DE3346527A1 (en) 1983-12-22 1983-12-22 METHOD AND ARRANGEMENT FOR THE FAULT-SAFE ALARM EVALUATION OF A DETECTING LINE OF A DANGER DETECTING SYSTEM

Publications (2)

Publication Number Publication Date
EP0149097A2 EP0149097A2 (en) 1985-07-24
EP0149097A3 true EP0149097A3 (en) 1985-09-04

Family

ID=6217769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114714A Withdrawn EP0149097A3 (en) 1983-12-22 1984-12-04 Method and arrangement for the failsafe alarm evaluation of a signal line of a hazard signal arrangement

Country Status (2)

Country Link
EP (1) EP0149097A3 (en)
DE (1) DE3346527A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589609B1 (en) * 1985-10-31 1988-09-09 Frere Emmanuel ALARM DEVICE, PARTICULARLY FOR SURVEILLANCE OF PREMISES
AT398859B (en) * 1990-05-11 1995-02-27 Siemens Ag Oesterreich CIRCUIT FOR MONITORING AND OPERATING A NOTIFICATION ORGAN
DE9017231U1 (en) * 1990-12-21 1992-04-16 Critikon Gmbh, 2000 Norderstedt, De
DE19960422C1 (en) 1999-12-15 2001-01-25 Job Lizenz Gmbh & Co Kg Faulty detector detection method for centralized alarm system e.g. fire alarm system, uses current-modulated data supplied by interrogated detectors to central evaluation point with controlled switch opening for fault location

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599195A (en) * 1968-05-31 1971-08-10 Pinkerton S Inc Dual alarm, coaxial line resonator, intrusion detection system
US4086574A (en) * 1975-07-25 1978-04-25 Hochiki Corporation Fire detection system
DE2722338A1 (en) * 1977-05-17 1978-11-23 Preussag Ag Feuerschutz Distributed fire alarm network with centralised control - subjects incoming signals to repeated threshold comparative test and uses logic circuits prior to alarm activation
US4151522A (en) * 1976-06-17 1979-04-24 Hochiki Corporation Count discriminating fire detection system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599195A (en) * 1968-05-31 1971-08-10 Pinkerton S Inc Dual alarm, coaxial line resonator, intrusion detection system
US4086574A (en) * 1975-07-25 1978-04-25 Hochiki Corporation Fire detection system
US4151522A (en) * 1976-06-17 1979-04-24 Hochiki Corporation Count discriminating fire detection system
DE2722338A1 (en) * 1977-05-17 1978-11-23 Preussag Ag Feuerschutz Distributed fire alarm network with centralised control - subjects incoming signals to repeated threshold comparative test and uses logic circuits prior to alarm activation

Also Published As

Publication number Publication date
DE3346527A1 (en) 1985-07-04
EP0149097A2 (en) 1985-07-24

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19841221

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18W Application withdrawn

Withdrawal date: 19860304

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SOJKA, HANS MICHAEL, DIPL.-ING.

Inventor name: BOEHM, JOACHIM