CA1052887A - Smoke detector - Google Patents
Smoke detectorInfo
- Publication number
- CA1052887A CA1052887A CA239,985A CA239985A CA1052887A CA 1052887 A CA1052887 A CA 1052887A CA 239985 A CA239985 A CA 239985A CA 1052887 A CA1052887 A CA 1052887A
- Authority
- CA
- Canada
- Prior art keywords
- photo
- light
- light source
- detector
- smoke
- 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
Links
- 239000000779 smoke Substances 0.000 title claims abstract description 66
- 238000012546 transfer Methods 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims description 41
- 230000007423 decrease Effects 0.000 claims description 10
- 230000011664 signaling Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 2
- ZMJBYMUCKBYSCP-UHFFFAOYSA-N Hydroxycitric acid Chemical compound OC(=O)C(O)C(O)(C(O)=O)CC(O)=O ZMJBYMUCKBYSCP-UHFFFAOYSA-N 0.000 claims 1
- 238000002310 reflectometry Methods 0.000 abstract description 7
- 230000003247 decreasing effect Effects 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000727 fraction Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QHGVXILFMXYDRS-UHFFFAOYSA-N pyraclofos Chemical compound C1=C(OP(=O)(OCC)SCCC)C=NN1C1=CC=C(Cl)C=C1 QHGVXILFMXYDRS-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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
-
- 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
- G08B17/11—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)
- 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)
- Emergency Alarm Devices (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52758974A | 1974-11-27 | 1974-11-27 | |
| US05/621,085 US4011458A (en) | 1975-10-09 | 1975-10-09 | Photoelectric detector with light source intensity regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1052887A true CA1052887A (en) | 1979-04-17 |
Family
ID=27062456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA239,985A Expired CA1052887A (en) | 1974-11-27 | 1975-11-18 | Smoke detector |
Country Status (10)
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53102085A (en) * | 1977-02-18 | 1978-09-06 | Mochida Pharm Co Ltd | Instrument for measuring amount of bilirubin |
| DE2965650D1 (en) * | 1979-02-01 | 1983-07-21 | Bbc Brown Boveri & Cie | Photoelectric system for monitoring flames and fumes |
| US4306230A (en) * | 1979-12-10 | 1981-12-15 | Honeywell Inc. | Self-checking photoelectric smoke detector |
| JPH02123691U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1989-03-23 | 1990-10-11 | ||
| EP1941785B1 (en) | 2005-10-19 | 2011-01-19 | Philips Intellectual Property & Standards GmbH | A color lighting device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1164793A (en) * | 1966-04-05 | 1969-09-24 | Photain Controls Ltd | Photo-electric Detection Devices |
| US3461443A (en) * | 1966-11-07 | 1969-08-12 | Alfred W Vasel | Smoke detector with means indicating the failure of the light source |
| GB1222351A (en) * | 1966-12-07 | 1971-02-10 | Derek Charles Adams | Improvements in or relating to fire-detection apparatus |
| GB1278205A (en) * | 1970-02-11 | 1972-06-21 | Shorrock Develpoments Ltd | Smoke detecting device |
| US3736431A (en) * | 1971-04-30 | 1973-05-29 | Mobil Oil Corp | System for monitoring a fluid stream |
-
1975
- 1975-11-18 AU AU86705/75A patent/AU497359B2/en not_active Expired
- 1975-11-18 CA CA239,985A patent/CA1052887A/en not_active Expired
- 1975-11-25 CH CH1525075A patent/CH604299A5/xx not_active IP Right Cessation
- 1975-11-25 FR FR7536011A patent/FR2292975A1/fr active Granted
- 1975-11-25 JP JP14107775A patent/JPS5624898B2/ja not_active Expired
- 1975-11-26 GB GB48613/75A patent/GB1529473A/en not_active Expired
- 1975-11-26 SE SE7513301A patent/SE406657B/xx unknown
- 1975-11-26 IT IT29655/75A patent/IT1054912B/it active
- 1975-11-27 BR BR7507896*A patent/BR7507896A/pt unknown
- 1975-11-27 DE DE19752553339 patent/DE2553339A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| GB1529473A (en) | 1978-10-18 |
| JPS5177386A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-07-05 |
| AU8670575A (en) | 1977-05-26 |
| SE406657B (sv) | 1979-02-19 |
| SE7513301L (sv) | 1976-05-28 |
| IT1054912B (it) | 1981-11-30 |
| CH604299A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1978-09-15 |
| FR2292975A1 (fr) | 1976-06-25 |
| FR2292975B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1981-09-18 |
| AU497359B2 (en) | 1978-12-07 |
| JPS5624898B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1981-06-09 |
| DE2553339A1 (de) | 1976-08-12 |
| BR7507896A (pt) | 1976-08-10 |
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