DE3018021C2 - - Google Patents

Info

Publication number
DE3018021C2
DE3018021C2 DE3018021A DE3018021A DE3018021C2 DE 3018021 C2 DE3018021 C2 DE 3018021C2 DE 3018021 A DE3018021 A DE 3018021A DE 3018021 A DE3018021 A DE 3018021A DE 3018021 C2 DE3018021 C2 DE 3018021C2
Authority
DE
Germany
Prior art keywords
radiation
detector
smoke
light
radiation source
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
DE3018021A
Other languages
German (de)
English (en)
Other versions
DE3018021A1 (de
Inventor
John A. Excelsior Minn. Us Forss
Tzuo-Chang Bloomington Minn. Us Lee
Richard G. Hopkins Minn. Us Schulze
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.)
Honeywell Inc
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
Priority claimed from US06/039,467 external-priority patent/US4230950A/en
Priority claimed from US06/045,025 external-priority patent/US4221485A/en
Application filed by Honeywell Inc filed Critical Honeywell Inc
Publication of DE3018021A1 publication Critical patent/DE3018021A1/de
Application granted granted Critical
Publication of DE3018021C2 publication Critical patent/DE3018021C2/de
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • G08B17/113—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
DE3018021A 1979-05-16 1980-05-10 Optischer rauchdetektor Granted DE3018021A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/039,467 US4230950A (en) 1979-05-16 1979-05-16 Electro-optic smoke detector
US06/045,025 US4221485A (en) 1979-06-04 1979-06-04 Optical smoke detector

Publications (2)

Publication Number Publication Date
DE3018021A1 DE3018021A1 (de) 1980-11-27
DE3018021C2 true DE3018021C2 (enExample) 1989-04-20

Family

ID=26716158

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3018021A Granted DE3018021A1 (de) 1979-05-16 1980-05-10 Optischer rauchdetektor

Country Status (5)

Country Link
CH (1) CH651410A5 (enExample)
DE (1) DE3018021A1 (enExample)
FR (1) FR2456529A1 (enExample)
IT (1) IT1143096B (enExample)
SE (1) SE8003547L (enExample)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE682869C (de) * 1929-02-24 1939-10-23 Zeiss Carl Fa Vorrichtung zum Messen des Truebungsgrades von Fluessigkeiten
CH278998A (de) * 1949-08-22 1951-11-15 Loeschcke Hans Dr Prof Verfahren zur Zählung von in einem lichtdurchlässigen Medium schwebenden Teilchen und Messgerät zur Durchführung des Verfahrens.
NL132814C (enExample) * 1963-07-24
CH417405A (de) * 1964-07-14 1966-07-15 Cerberus Ag Werk Fuer Elektron Vorrichtung zur Feststellung von Aerosolen in Luft
US3524707A (en) * 1967-08-14 1970-08-18 Julian E Hansen Sr Pulsating light source smoke detector
GB1285977A (en) * 1968-12-23 1972-08-16 Gam Rad Improved turbidimeter
US3713743A (en) * 1970-11-25 1973-01-30 Agricultural Control Syst Forward scatter optical turbidimeter apparatus
JPS5431833B2 (enExample) * 1972-12-28 1979-10-09
JPS5855446B2 (ja) * 1975-07-15 1983-12-09 松下電工株式会社 散乱光式煙感知器
CH595113A5 (enExample) * 1976-03-18 1978-01-31 Cerberus Ag
US4121110A (en) * 1976-11-04 1978-10-17 Solomon Elias E Optically biased smoke detector

Also Published As

Publication number Publication date
IT1143096B (it) 1986-10-22
DE3018021A1 (de) 1980-11-27
IT8048651A0 (it) 1980-05-12
SE8003547L (sv) 1980-11-17
CH651410A5 (en) 1985-09-13
FR2456529A1 (fr) 1980-12-12

Similar Documents

Publication Publication Date Title
DE19781742C5 (de) Nachweis von Schmutzstoffen in der Luft
EP1408469B1 (de) Branderkennungsverfahren und Brandmelder zu dessen Durchführung
EP0756703B1 (de) Vorrichtung zur messung der lichtstreuung an partikeln
DE2619083C3 (de) Rauchdetektor
EP3521810A1 (de) Analysegerät zur bestimmung von feinstaub
EP0054680B1 (de) Rauchmelder nach dem Strahlungs-Extinktions-Prinzip
WO2008017698A1 (de) Streulicht-rauchmelder
EP1012805B1 (de) Rauchmelder
DE2749494A1 (de) Optischer rauchdetektor
DE69319184T2 (de) Flüssigkeitsverschmutzungfühler
DE2046492C3 (de) Rauchmelder
DE3832901A1 (de) Teilchenmessvorrichtung
DE19809896A1 (de) Brandmelder
EP0120881A1 (de) Streustrahlungs-rauchdetektor.
DE69806404T2 (de) Partikeldetektion mit hoher empfindlichkeit
DE2630843A1 (de) Rauchmelder nach dem lichtstreuungsprinzip
DE2725441A1 (de) Verfahren und vorrichtung zum unterscheidbaren erkennen von partikeln, die bei beleuchtung mit einem lichtstrahlenbuendel ein besonderes optisches charakteristikum aufweisen
DE69818480T2 (de) System und verfahren zum nachweis von allergenen
EP0020674B1 (de) Mit gestreuter strahlung arbeitender rauchdetektor
DE2709866C2 (de) Vorrichtung zur Feststellung von Schwebeteilchen
DE3018021C2 (enExample)
EP1087352A1 (de) Optischer Rauchmelder
DE68902877T2 (de) Verfahren und vorrichtung zur messung der sichtweite durch ein medium veraenderlicher dichte.
CH571750A5 (en) Photoelectricccc aerosol or smoke detector - second photo cell receives reflected light from prism surface to compensate for contamination
DE29622293U1 (de) Optischer Rauchmelder

Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee