CA1148279A - Ionization smoke detector with increased operational reliability - Google Patents

Ionization smoke detector with increased operational reliability

Info

Publication number
CA1148279A
CA1148279A CA000361830A CA361830A CA1148279A CA 1148279 A CA1148279 A CA 1148279A CA 000361830 A CA000361830 A CA 000361830A CA 361830 A CA361830 A CA 361830A CA 1148279 A CA1148279 A CA 1148279A
Authority
CA
Canada
Prior art keywords
voltage
operating voltage
ionization
transistor
smoke 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.)
Expired
Application number
CA000361830A
Other languages
English (en)
French (fr)
Inventor
Andreas Scheidweiler
Peter Muller
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.)
Cerberus AG
Original Assignee
Cerberus 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 Cerberus AG filed Critical Cerberus AG
Application granted granted Critical
Publication of CA1148279A publication Critical patent/CA1148279A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
CA000361830A 1979-12-14 1980-10-08 Ionization smoke detector with increased operational reliability Expired CA1148279A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1107779 1979-12-14
CH11077/79-2 1979-12-14

Publications (1)

Publication Number Publication Date
CA1148279A true CA1148279A (en) 1983-06-14

Family

ID=4369809

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000361830A Expired CA1148279A (en) 1979-12-14 1980-10-08 Ionization smoke detector with increased operational reliability

Country Status (7)

Country Link
US (1) US4364031A (enExample)
EP (1) EP0030621B1 (enExample)
JP (1) JPS5694497A (enExample)
AT (1) ATE11345T1 (enExample)
CA (1) CA1148279A (enExample)
DE (1) DE3069987D1 (enExample)
YU (1) YU314380A (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH681932A5 (enExample) * 1990-12-04 1993-06-15 Cerberus Ag
JP3128633B2 (ja) * 1992-05-25 2001-01-29 能美防災株式会社 イオン化式煙感知器
FR2872914B1 (fr) * 2004-07-07 2006-10-13 Univ Rennes I Etablissement Pu Capteur pour la detection et/ou la mesure d'une concentration de charges electriques contenues dans une ambiance, utilisations et procede de fabrication correspondants
WO2008034080A2 (en) * 2006-09-15 2008-03-20 Nano-Proprietary, Inc. Smoke detector
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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB831812A (en) 1957-02-01 1960-03-30 Minerva Detector Company Ltd Improvements in or relating to fire detectors
DK101900C (da) * 1961-12-30 1965-06-08 Danske Securitas As Elektrisk alarmanlæg, fortrinsvis til brandalarmering.
CH446131A (de) * 1966-02-22 1967-10-31 Cerberus Ag Ionisationsfeuermelderanlage
JPS446089Y1 (enExample) * 1966-03-30 1969-03-05
CH489070A (de) * 1969-03-27 1970-04-15 Cerberus Ag Werk Fuer Elektron Ionisationsfeuermelder
US3657713A (en) * 1969-06-02 1972-04-18 Nittan Co Ltd Device for testing ionization smoke detector
US3797008A (en) * 1971-02-04 1974-03-12 Nittan Co Ltd Fire detecting system
CH570016A5 (enExample) * 1973-03-30 1975-11-28 Cerberus Ag
JPS51100085U (enExample) * 1975-02-10 1976-08-11
US4017852A (en) * 1976-06-24 1977-04-12 Honeywell Inc. Apparatus for supervising leads interconnecting a plurality of self-contained abnormal condition sensing and alarm annunciating units

Also Published As

Publication number Publication date
JPS5694497A (en) 1981-07-30
ATE11345T1 (de) 1985-02-15
EP0030621A1 (de) 1981-06-24
US4364031A (en) 1982-12-14
EP0030621B1 (de) 1985-01-16
DE3069987D1 (en) 1985-02-28
YU314380A (en) 1983-10-31
JPS6242320B2 (enExample) 1987-09-08

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Legal Events

Date Code Title Description
MKEX Expiry