GB2455318B - Optical scatter smoke sensor - Google Patents

Optical scatter smoke sensor

Info

Publication number
GB2455318B
GB2455318B GB0723742.3A GB0723742A GB2455318B GB 2455318 B GB2455318 B GB 2455318B GB 0723742 A GB0723742 A GB 0723742A GB 2455318 B GB2455318 B GB 2455318B
Authority
GB
United Kingdom
Prior art keywords
smoke sensor
optical scatter
scatter smoke
optical
sensor
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 - Fee Related
Application number
GB0723742.3A
Other versions
GB2455318A (en
GB0723742D0 (en
Inventor
Manhar Amlani
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.)
RED DOT TECHNOLOGIES Ltd
Original Assignee
RED DOT TECHNOLOGIES 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 RED DOT TECHNOLOGIES Ltd filed Critical RED DOT TECHNOLOGIES Ltd
Priority to GB0723742.3A priority Critical patent/GB2455318B/en
Publication of GB0723742D0 publication Critical patent/GB0723742D0/en
Publication of GB2455318A publication Critical patent/GB2455318A/en
Application granted granted Critical
Publication of GB2455318B publication Critical patent/GB2455318B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G01N21/532—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke with measurement of scattering and transmission
    • 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

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (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)
GB0723742.3A 2007-12-05 2007-12-05 Optical scatter smoke sensor Expired - Fee Related GB2455318B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0723742.3A GB2455318B (en) 2007-12-05 2007-12-05 Optical scatter smoke sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0723742.3A GB2455318B (en) 2007-12-05 2007-12-05 Optical scatter smoke sensor

Publications (3)

Publication Number Publication Date
GB0723742D0 GB0723742D0 (en) 2008-01-16
GB2455318A GB2455318A (en) 2009-06-10
GB2455318B true GB2455318B (en) 2012-04-04

Family

ID=38982990

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0723742.3A Expired - Fee Related GB2455318B (en) 2007-12-05 2007-12-05 Optical scatter smoke sensor

Country Status (1)

Country Link
GB (1) GB2455318B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59221640A (en) * 1983-05-31 1984-12-13 Matsushita Electric Works Ltd Smoke sensor
JPH0933434A (en) * 1995-07-21 1997-02-07 Daikin Ind Ltd Photoelectric dust sensor
US5929988A (en) * 1995-02-27 1999-07-27 Nohmi Bosai, Ltd. Particulate detecting sensor employing parallel light
GB2343947A (en) * 1996-05-03 2000-05-24 Vision Products Pty Ltd Filter cartridge for smoke detection system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59221640A (en) * 1983-05-31 1984-12-13 Matsushita Electric Works Ltd Smoke sensor
US5929988A (en) * 1995-02-27 1999-07-27 Nohmi Bosai, Ltd. Particulate detecting sensor employing parallel light
JPH0933434A (en) * 1995-07-21 1997-02-07 Daikin Ind Ltd Photoelectric dust sensor
GB2343947A (en) * 1996-05-03 2000-05-24 Vision Products Pty Ltd Filter cartridge for smoke detection system

Also Published As

Publication number Publication date
GB2455318A (en) 2009-06-10
GB0723742D0 (en) 2008-01-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20231205