FR2411451A1 - Detecteur d'incendie par ionisation comportant une auto-surveillance de son fonctionnement - Google Patents

Detecteur d'incendie par ionisation comportant une auto-surveillance de son fonctionnement

Info

Publication number
FR2411451A1
FR2411451A1 FR7832565A FR7832565A FR2411451A1 FR 2411451 A1 FR2411451 A1 FR 2411451A1 FR 7832565 A FR7832565 A FR 7832565A FR 7832565 A FR7832565 A FR 7832565A FR 2411451 A1 FR2411451 A1 FR 2411451A1
Authority
FR
France
Prior art keywords
circuit
monitoring
self
base
operating voltage
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Withdrawn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
FR7832565A
Other languages
English (en)
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.)
RFT MESSELEKTRONIK DRESDEN VEB
Original Assignee
RFT MESSELEKTRONIK DRESDEN VEB
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 RFT MESSELEKTRONIK DRESDEN VEB filed Critical RFT MESSELEKTRONIK DRESDEN VEB
Publication of FR2411451A1 publication Critical patent/FR2411451A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • 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
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/04—Monitoring of the detection circuits
    • G08B29/043—Monitoring of the detection circuits of fire detection circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

DETECTEUR D'INCENDIE PAR IONISATION COMPORTANT UNE AUTO-SURVEILLANCE DE SON FONCTIONNEMENT. CARACTERISE EN CE QUE LA CONNEXION DE DRAIN D'UN TRANSISTOR A EFFET DE CHAMP MOS QUI TRAVAILLE COMME TRANSFORMATEUR D'IMPEDANCE EST RELIEE, PAR L'INTERMEDIAIRE DE LA JONCTION BASE-EMETTEUR D'UN TRANSISTOR DE COMMUTATION, A LA TENSION D'EXPLOITATION ET UN CIRCUIT DE DECLENCHEMENT EN CAS DE PANNE, CONSTITUE PAR DEUX TRANSISTORS, EST EXCITE PAR CE TRANSISTOR DE COMMUTATION. MONTAGE APPLICABLE A DES DETECTEURS A INCENDIE PAR IONISATION.
FR7832565A 1977-12-08 1978-11-17 Detecteur d'incendie par ionisation comportant une auto-surveillance de son fonctionnement Withdrawn FR2411451A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD20247077A DD136078A1 (de) 1977-12-08 1977-12-08 Schaltungsanordnung fuer einen ionisationsfeuermelder mit selbstueberwachung seiner funktion

Publications (1)

Publication Number Publication Date
FR2411451A1 true FR2411451A1 (fr) 1979-07-06

Family

ID=5510734

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7832565A Withdrawn FR2411451A1 (fr) 1977-12-08 1978-11-17 Detecteur d'incendie par ionisation comportant une auto-surveillance de son fonctionnement

Country Status (4)

Country Link
DD (1) DD136078A1 (fr)
DE (1) DE2846384A1 (fr)
FI (1) FI783741A (fr)
FR (1) FR2411451A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014019773B4 (de) 2014-12-17 2023-12-07 Elmos Semiconductor Se Vorrichtung und Verfahren zur Unterscheidung von festen Objekten, Kochdunst und Rauch mittels des Displays eines Mobiltelefons
DE102014019172B4 (de) 2014-12-17 2023-12-07 Elmos Semiconductor Se Vorrichtung und Verfahren zur Unterscheidung von festen Objekten, Kochdunst und Rauch mit einem kompensierenden optischen Messsystem

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH506148A (fr) * 1969-02-28 1971-04-15 Mefina Sa Dispositif détecteur de fumée
CH566602A5 (en) * 1974-06-14 1975-09-15 Cerberus Ag Electronic circuits for fire detection equipment - allow accurate setting of thresholds for monitoring outputs of ionization chamber
US3952294A (en) * 1973-03-19 1976-04-20 General Time Corporation Smoke detection alarm system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH506148A (fr) * 1969-02-28 1971-04-15 Mefina Sa Dispositif détecteur de fumée
US3952294A (en) * 1973-03-19 1976-04-20 General Time Corporation Smoke detection alarm system
CH566602A5 (en) * 1974-06-14 1975-09-15 Cerberus Ag Electronic circuits for fire detection equipment - allow accurate setting of thresholds for monitoring outputs of ionization chamber

Also Published As

Publication number Publication date
FI783741A (fi) 1979-06-09
DD136078A1 (de) 1979-06-13
DE2846384A1 (de) 1979-06-13

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Legal Events

Date Code Title Description
ST Notification of lapse