NO20032341L - Höysensitiv partikkeldeteksjon - Google Patents

Höysensitiv partikkeldeteksjon

Info

Publication number
NO20032341L
NO20032341L NO20032341A NO20032341A NO20032341L NO 20032341 L NO20032341 L NO 20032341L NO 20032341 A NO20032341 A NO 20032341A NO 20032341 A NO20032341 A NO 20032341A NO 20032341 L NO20032341 L NO 20032341L
Authority
NO
Norway
Prior art keywords
infra
blue light
scattered
radiation
red
Prior art date
Application number
NO20032341A
Other languages
English (en)
Other versions
NO20032341D0 (no
Inventor
Kenneth Frazer Bell
Justin Gilmore
Original Assignee
Kidde Ip Holdings Ltd
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 Kidde Ip Holdings Ltd filed Critical Kidde Ip Holdings Ltd
Publication of NO20032341D0 publication Critical patent/NO20032341D0/no
Publication of NO20032341L publication Critical patent/NO20032341L/no

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
    • 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

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

Det er vist en røykdetektor hvor blått lys ledes gjennom et spredningsvolum (9) fra en strålingsemitter (3), og infrarød stråling ledes også gjennom spredningsvolumet (9) fra en infrarød kilde (3 A). Fremoverspredt stråling ved eventuelle partikler i spredningsvolumet (9) ledes ved hjelp av et speil (13) til en fotodiode (15) som frembringer en utgangseffekt til et kontrollmiddel (16). Emitterne (3, 3A) pulses ved forskjellige frekvenser, hvilket gjør det mulig for kontrollmiddelet (16) å frembringe separate signaler (21, 23) som respektivt korresponderer til det spredte blå lyset og den spredte infrarøde strålingen. For røykpartikler spres vesentlig mer blått lys enn infrarød stråling, men dette er ikke tilfellet i så stor grad for partikler som ikke er røyk. En komparator (25) bruker forholdet mellom de to signaler (21, 23) for å frembringe en røykavhengig varslingsutgang. For å redusere kraftforbruk og for å øke levetiden til blålysemitteren (3) opererer anordningen vanligvis i en overvåkingsmodus hvor den infrarøde emitteren (3 A) pulses intensivt, men ved en lav blinkehastighet, og den. blålysemitteren (3) holdes. inoperativ inntil infrarød. stråling som er spredt av. partiklene i volumet (9). bevirker at fotodioden (15). frembringer en tilstrekkelig. utgangseffekt, hvoretter. blålysemitteren (3) gjøres. operativ.
NO20032341A 2001-09-25 2003-05-23 Höysensitiv partikkeldeteksjon NO20032341L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0123038A GB2379977B (en) 2001-09-25 2001-09-25 High sensitivity particle detection
PCT/GB2002/004230 WO2003027979A1 (en) 2001-09-25 2002-09-17 High sensitivity particle detection

Publications (2)

Publication Number Publication Date
NO20032341D0 NO20032341D0 (no) 2003-05-23
NO20032341L true NO20032341L (no) 2003-07-15

Family

ID=9922650

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20032341A NO20032341L (no) 2001-09-25 2003-05-23 Höysensitiv partikkeldeteksjon

Country Status (11)

Country Link
US (1) US7084401B2 (no)
EP (1) EP1430457B1 (no)
JP (1) JP4268043B2 (no)
CN (1) CN1326097C (no)
AT (1) ATE300072T1 (no)
AU (1) AU2002329403B2 (no)
DE (1) DE60205127T2 (no)
GB (1) GB2379977B (no)
MX (1) MXPA03004587A (no)
NO (1) NO20032341L (no)
WO (1) WO2003027979A1 (no)

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EP3287999A1 (de) 2016-08-25 2018-02-28 Siemens Schweiz AG Verfahren zur branddetektion nach dem streulichtprinzip mit gestaffelter zuschaltung einer weiteren led-einheit zum einstrahlen weiterer lichtimpulse unterschiedlicher wellenlänge und streulichtwinkel sowie derartige streulichtrauchmelder
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DE102020109296A1 (de) 2020-04-02 2021-10-07 Palas Gmbh Partikel- Und Lasermesstechnik Verfahren und Aerosol-Messgerät zum Bestimmen einer quellenabhängigen Partikelgrößenverteilung eines Aerosols
CN113611060A (zh) * 2021-06-03 2021-11-05 深圳市派安科技有限公司 一种基于无线传输蓝光检测烟雾报警装置
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Also Published As

Publication number Publication date
US7084401B2 (en) 2006-08-01
GB2379977B (en) 2005-04-06
WO2003027979A1 (en) 2003-04-03
US20040075056A1 (en) 2004-04-22
ATE300072T1 (de) 2005-08-15
DE60205127D1 (de) 2005-08-25
GB0123038D0 (en) 2001-11-14
AU2002329403B2 (en) 2007-10-18
EP1430457A1 (en) 2004-06-23
MXPA03004587A (es) 2004-10-14
EP1430457B1 (en) 2005-07-20
JP4268043B2 (ja) 2009-05-27
JP2005504300A (ja) 2005-02-10
NO20032341D0 (no) 2003-05-23
CN1326097C (zh) 2007-07-11
DE60205127T2 (de) 2006-05-24
GB2379977A (en) 2003-03-26
CN1489756A (zh) 2004-04-14

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