SE8001492L - Rokdetektor - Google Patents

Rokdetektor

Info

Publication number
SE8001492L
SE8001492L SE8001492A SE8001492A SE8001492L SE 8001492 L SE8001492 L SE 8001492L SE 8001492 A SE8001492 A SE 8001492A SE 8001492 A SE8001492 A SE 8001492A SE 8001492 L SE8001492 L SE 8001492L
Authority
SE
Sweden
Prior art keywords
phototransistor
smoke detector
ambient light
light level
bias
Prior art date
Application number
SE8001492A
Other languages
Unknown language ( )
English (en)
Swedish (sv)
Inventor
A D Komplien
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Publication of SE8001492L publication Critical patent/SE8001492L/

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
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke

Landscapes

  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
SE8001492A 1979-03-01 1980-02-26 Rokdetektor SE8001492L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/016,697 US4225791A (en) 1979-03-01 1979-03-01 Optical smoke detector circuit

Publications (1)

Publication Number Publication Date
SE8001492L true SE8001492L (sv) 1980-09-02

Family

ID=21778464

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8001492A SE8001492L (sv) 1979-03-01 1980-02-26 Rokdetektor

Country Status (8)

Country Link
US (1) US4225791A (fr)
JP (1) JPS55117943A (fr)
CA (1) CA1109540A (fr)
DE (1) DE3007699A1 (fr)
FR (1) FR2450453A1 (fr)
GB (1) GB2044923B (fr)
IT (1) IT1126953B (fr)
SE (1) SE8001492L (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680462A (en) * 1984-12-11 1987-07-14 Baxter Travenol Laboratories, Inc. Fluid drop detection system
FR2619919B1 (fr) * 1987-09-01 1990-01-19 Jaeger Dispositif de mesure de visibilite dans un milieu turbide
US5354983A (en) * 1990-04-10 1994-10-11 Auto-Sense, Limited Object detector utilizing a threshold detection distance and suppression means for detecting the presence of a motor vehicle
GB2274333B (en) * 1993-01-07 1996-12-11 Hochiki Co Smoke detecting apparatus capable of detecting both smoke and fine particles
US6501810B1 (en) 1998-10-13 2002-12-31 Agere Systems Inc. Fast frame synchronization
US5546074A (en) * 1993-08-19 1996-08-13 Sentrol, Inc. Smoke detector system with self-diagnostic capabilities and replaceable smoke intake canopy
US5471981A (en) * 1993-12-30 1995-12-05 Diasense, Inc. Method and apparatus for converting a modulated optical signal to an electrical signal with correction for modulation jitter
DE19646748C2 (de) 1996-11-01 2003-03-20 Nanotron Ges Fuer Mikrotechnik Sicherungssystem
DE19902319B4 (de) * 1999-01-21 2011-06-30 Novar GmbH, Albstadt-Ebingen Zweigniederlassung Neuss, 41469 Streulichtbrandmelder
EP1369836B1 (fr) * 2002-05-08 2005-12-21 HEKATRON Technik GmbH Détecteur d'incendie, et méthode d'opération
US7068177B2 (en) * 2002-09-19 2006-06-27 Honeywell International, Inc. Multi-sensor device and methods for fire detection
DE102004004098B3 (de) * 2004-01-27 2005-09-01 Wagner Alarm- Und Sicherungssysteme Gmbh Verfahren zur Auswertung eines Streulichtsignals und Streulichtdetektor zur Durchführung des Verfahrens
EP2273466A4 (fr) * 2008-04-24 2013-07-24 Panasonic Corp Détecteur de fumée
CN103684297A (zh) * 2013-12-03 2014-03-26 成都国科海博信息技术股份有限公司 用于探测器的电放大电路
EP3704679A1 (fr) 2017-10-30 2020-09-09 Carrier Corporation Compensateur dans un dispositif détecteur
CN113470300B (zh) * 2021-07-06 2022-12-20 无锡商业职业技术学院 一种用于高精度烟雾探测器的光电控制系统
CN115083097A (zh) * 2022-06-09 2022-09-20 南京英锐创电子科技有限公司 模拟前端电路和烟雾报警器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185975A (en) * 1962-06-18 1965-05-25 Honeywell Inc Photoelectric smoke detector
CH558577A (de) * 1973-09-25 1975-01-31 Cerberus Ag Verfahren zur flammen-detektion und vorrichtung zur durchfuehrung dieses verfahrens.
US3946241A (en) * 1973-11-26 1976-03-23 Pyrotector, Incorporated Light detector with pulsed light source and synchronous data gating
US4063227A (en) * 1975-09-08 1977-12-13 Cega, Inc. Smoke detector
US4087799A (en) * 1976-07-08 1978-05-02 Conrac Corporation Particulate products of combustion detector employing solid state elements
US4112310A (en) * 1977-05-19 1978-09-05 Chloride, Incorporated Smoke detector with photo-responsive means for increasing the sensitivity during darkness

Also Published As

Publication number Publication date
IT1126953B (it) 1986-05-21
US4225791A (en) 1980-09-30
IT8047965A0 (it) 1980-02-21
DE3007699A1 (de) 1980-09-04
GB2044923B (en) 1983-05-11
GB2044923A (en) 1980-10-22
CA1109540A (fr) 1981-09-22
FR2450453A1 (fr) 1980-09-26
JPS55117943A (en) 1980-09-10

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