AU575845B2 - Light absorber for smoke detector - Google Patents

Light absorber for smoke detector

Info

Publication number
AU575845B2
AU575845B2 AU31842/84A AU3184284A AU575845B2 AU 575845 B2 AU575845 B2 AU 575845B2 AU 31842/84 A AU31842/84 A AU 31842/84A AU 3184284 A AU3184284 A AU 3184284A AU 575845 B2 AU575845 B2 AU 575845B2
Authority
AU
Australia
Prior art keywords
light absorber
smoke detector
smoke
absorber
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.)
Ceased
Application number
AU31842/84A
Other versions
AU3184284A (en
Inventor
Martin Terence Cole
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.)
Vision Systems Ltd
Original Assignee
Vision Systems 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 Vision Systems Ltd filed Critical Vision Systems Ltd
Priority to AU31842/84A priority Critical patent/AU575845B2/en
Priority to EP84305513A priority patent/EP0135361B1/en
Publication of AU3184284A publication Critical patent/AU3184284A/en
Application granted granted Critical
Publication of AU575845B2 publication Critical patent/AU575845B2/en
Assigned to VISION SYSTEMS LIMITED reassignment VISION SYSTEMS LIMITED Alteration of Name(s) in Register under S187 Assignors: COLE, MARTIN TERENCE
Anticipated expiration legal-status Critical
Ceased 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/064—Stray light conditioning
AU31842/84A 1983-08-12 1984-08-10 Light absorber for smoke detector Ceased AU575845B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU31842/84A AU575845B2 (en) 1983-08-12 1984-08-10 Light absorber for smoke detector
EP84305513A EP0135361B1 (en) 1983-08-12 1984-08-13 Apparatus for detecting particulate material in suspension

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPG0821 1983-08-12
AU31842/84A AU575845B2 (en) 1983-08-12 1984-08-10 Light absorber for smoke detector

Publications (2)

Publication Number Publication Date
AU3184284A AU3184284A (en) 1985-02-14
AU575845B2 true AU575845B2 (en) 1988-08-11

Family

ID=3719495

Family Applications (1)

Application Number Title Priority Date Filing Date
AU31842/84A Ceased AU575845B2 (en) 1983-08-12 1984-08-10 Light absorber for smoke detector

Country Status (1)

Country Link
AU (1) AU575845B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7508313B2 (en) 2000-02-10 2009-03-24 Siemens Aktiengesellschaft Smoke detectors particularly ducted smoke detectors
US7551277B2 (en) 2003-10-23 2009-06-23 Siemens Schweiz Ag Particle monitors and method(s) therefor

Citations (3)

* 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
US4166960A (en) * 1976-12-23 1979-09-04 Cerberus Ag Smoke detector
US4315158A (en) * 1977-09-20 1982-02-09 Cybernet Electronics Corporation Photoelectric smoke sensing chamber and smoke sensor box

Patent Citations (3)

* 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
US4166960A (en) * 1976-12-23 1979-09-04 Cerberus Ag Smoke detector
US4315158A (en) * 1977-09-20 1982-02-09 Cybernet Electronics Corporation Photoelectric smoke sensing chamber and smoke sensor box

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7508313B2 (en) 2000-02-10 2009-03-24 Siemens Aktiengesellschaft Smoke detectors particularly ducted smoke detectors
US7551277B2 (en) 2003-10-23 2009-06-23 Siemens Schweiz Ag Particle monitors and method(s) therefor
US7724367B2 (en) 2003-10-23 2010-05-25 Siemens Schweiz Ag Particle monitors and method(s) therefor
US7738098B2 (en) 2003-10-23 2010-06-15 Siemens Schweiz Ag Particle monitors and method(s) therefor

Also Published As

Publication number Publication date
AU3184284A (en) 1985-02-14

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired