FR2354784A1 - Systeme de detection d'incendie a accumulation - Google Patents

Systeme de detection d'incendie a accumulation

Info

Publication number
FR2354784A1
FR2354784A1 FR7718491A FR7718491A FR2354784A1 FR 2354784 A1 FR2354784 A1 FR 2354784A1 FR 7718491 A FR7718491 A FR 7718491A FR 7718491 A FR7718491 A FR 7718491A FR 2354784 A1 FR2354784 A1 FR 2354784A1
Authority
FR
France
Prior art keywords
output
fire
oscillator
counter
detector
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.)
Granted
Application number
FR7718491A
Other languages
English (en)
Other versions
FR2354784B1 (fr
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.)
Hochiki Corp
Original Assignee
Hochiki Corp
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 Hochiki Corp filed Critical Hochiki Corp
Publication of FR2354784A1 publication Critical patent/FR2354784A1/fr
Application granted granted Critical
Publication of FR2354784B1 publication Critical patent/FR2354784B1/fr
Granted legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

L'invention concerne un système de détection d'incendie à accumulation. Selon l'invention, il comprend un oscillateur 2 produisant des impulsions oscillantes à une certaine fréquence, un détecteur d'incendie 1 connecté à la sortie de l'oscillateur, pour détecter un changement physique supérieur à une quantite prédéterminée et produire des impulsions de détection, un compteur 4 dont la borne d'entrée est connectée à la sortie du détecteur et qui compte un nombre prédéterminé d'impulsions continues de détection pour produire un signal de sortie, un moyen 5 de remise à zéro dont les deux bornes d'entrée sont connectées à la sortie du détecteur et à la sortie de l'oscillateur, et qui produit une impulsion de remise à zéro quand il ne reçoit pas d'impulsion de détection, le moyen de remise à zéro étant connecté par sa borne de sortie, à une borne de remise à zéro du compteur 4, et un circuit d'alarme 6 connecté à la borne de sortie du compteur 4. La présente invention permet notamment de faire la distinction entre un feu réel et un faux feu.
FR7718491A 1976-06-17 1977-06-16 Systeme de detection d'incendie a accumulation Granted FR2354784A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7041076A JPS52153759A (en) 1976-06-17 1976-06-17 Storage type detector

Publications (2)

Publication Number Publication Date
FR2354784A1 true FR2354784A1 (fr) 1978-01-13
FR2354784B1 FR2354784B1 (fr) 1981-07-24

Family

ID=13430661

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7718491A Granted FR2354784A1 (fr) 1976-06-17 1977-06-16 Systeme de detection d'incendie a accumulation

Country Status (6)

Country Link
US (1) US4151522A (fr)
JP (1) JPS52153759A (fr)
CH (1) CH616015A5 (fr)
DE (1) DE2727108A1 (fr)
FR (1) FR2354784A1 (fr)
GB (1) GB1537980A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451750A1 (fr) * 1979-03-17 1980-10-17 Hochiki Co Detecteur d'incendie a discrimination de comptes

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS577102Y2 (fr) * 1978-02-16 1982-02-10
US4193069A (en) * 1978-03-13 1980-03-11 American District Telegraph Company Latching alarm smoke detector
US4254414A (en) * 1979-03-22 1981-03-03 The United States Of America As Represented By The Secretary Of The Navy Processor-aided fire detector
US4237453A (en) * 1979-03-23 1980-12-02 Malinowski William J Smoke detection system and method
JPS5773620A (en) * 1980-10-27 1982-05-08 Diesel Kiki Co Ltd Method and device for detecting fault
US4455553A (en) * 1982-05-17 1984-06-19 Pyrotector, Inc. Smoke detector of the ionization type
DE3313762C2 (de) * 1983-04-15 1986-06-19 Fa. Henning J. Claassen, 2120 Lüneburg Temperatur-Überwachungssystem für Heißleimgeräte und -Anlagen
DE3467267D1 (en) * 1983-10-17 1987-12-10 Cerberus Ag Alarm signalling method and application device therefor
DE3346527A1 (de) * 1983-12-22 1985-07-04 Siemens AG, 1000 Berlin und 8000 München Verfahren und anordnung zur stoerungssicheren alarmauswertung einer meldelinie einer gefahrenmeldeanlage
US4566285A (en) * 1984-01-26 1986-01-28 Whirlpool Corporation Refrigerator door ajar alarm with variable delay
US4563672A (en) * 1984-02-07 1986-01-07 Wormald U.S., Inc. Microprocessor automatic program fail reset circuit
US4709229A (en) * 1985-02-27 1987-11-24 Nohmi Bosai Kogyo Co., Ltd. Fire detector
JPH0235216Y2 (fr) * 1985-07-10 1990-09-25
JPS6219999A (ja) * 1985-07-18 1987-01-28 ホーチキ株式会社 火災報知装置
JPH0223152Y2 (fr) * 1985-08-02 1990-06-22
US4958144A (en) * 1985-10-15 1990-09-18 Pittway Corporation Water-flow detector
US4791414A (en) * 1985-10-15 1988-12-13 Pittway Corporation Water-flow detector
JPH0223153Y2 (fr) * 1985-10-30 1990-06-22
JPS6273723U (fr) * 1985-10-30 1987-05-12
FR2589609B1 (fr) * 1985-10-31 1988-09-09 Frere Emmanuel Dispositif d'arlarme, notamment pour la surveillance de locaux
US4763115A (en) * 1986-12-09 1988-08-09 Donald L. Trigg Fire or smoke detection and alarm system
US4792797A (en) * 1987-03-05 1988-12-20 Seatt Corporation Smoke detector having variable level sensitivity
USRE33920E (en) * 1987-03-05 1992-05-12 Seatt Corporation Smoke detector having variable level sensitivity
US8547238B2 (en) * 2010-06-30 2013-10-01 Knowflame, Inc. Optically redundant fire detector for false alarm rejection
US10533966B2 (en) * 2017-07-27 2020-01-14 Taiwan Semiconductor Manufacturing Co., Ltd. Digital time domain readout circuit for bioFET sensor cascades

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1565498A (fr) * 1968-02-15 1969-05-02
FR2257118B1 (fr) * 1974-01-04 1976-11-26 Commissariat Energie Atomique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451750A1 (fr) * 1979-03-17 1980-10-17 Hochiki Co Detecteur d'incendie a discrimination de comptes

Also Published As

Publication number Publication date
CH616015A5 (fr) 1980-02-29
US4151522A (en) 1979-04-24
GB1537980A (en) 1979-01-10
FR2354784B1 (fr) 1981-07-24
JPS52153759A (en) 1977-12-21
DE2727108A1 (de) 1977-12-29
JPS5745326B2 (fr) 1982-09-27

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Legal Events

Date Code Title Description
ST Notification of lapse