NO132564B - - Google Patents
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- Publication number
- NO132564B NO132564B NO3132/73A NO313273A NO132564B NO 132564 B NO132564 B NO 132564B NO 3132/73 A NO3132/73 A NO 3132/73A NO 313273 A NO313273 A NO 313273A NO 132564 B NO132564 B NO 132564B
- Authority
- NO
- Norway
- Prior art keywords
- radiation
- frequency
- circuit
- signal
- source
- Prior art date
Links
- 230000005855 radiation Effects 0.000 claims description 35
- 230000000694 effects Effects 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 4
- 239000000779 smoke Substances 0.000 description 14
- 230000010354 integration Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001052 transient effect 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
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Detection Mechanisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3763372A GB1405615A (en) | 1972-08-11 | 1972-08-11 | Fire alarms |
| GB5258772 | 1972-11-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO132564B true NO132564B (enrdf_load_stackoverflow) | 1975-08-18 |
| NO132564C NO132564C (enrdf_load_stackoverflow) | 1975-11-26 |
Family
ID=26263518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO3132/73A NO132564C (enrdf_load_stackoverflow) | 1972-08-11 | 1973-08-06 |
Country Status (17)
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE7604502L (sv) * | 1976-04-15 | 1977-10-16 | Ericsson Telefon Ab L M | Optisk branddetektor |
| SE395554B (sv) * | 1976-09-01 | 1977-08-15 | Ericsson Telefon Ab L M | Optisk branddetektor |
| DE2965907D1 (en) * | 1979-07-13 | 1983-08-25 | Ag Securiton | Method for detecting aerosols in air of a control zone and apparatus for its performing |
| JPS5631625A (en) * | 1979-08-24 | 1981-03-31 | Hochiki Corp | Smoke detector of photoelectronic type |
| JPS57140925A (en) * | 1981-02-24 | 1982-08-31 | Fuji Heavy Ind Ltd | Detection of clutch overheat |
| AU556490B2 (en) * | 1982-07-29 | 1986-11-06 | Kerr-Mcgee Corp. | Production monitoring system |
| EP0145189B1 (en) * | 1983-10-21 | 1990-08-08 | COLE, Martin Terence | Improvements relating to smoke detection apparatus |
| DE102004004098B3 (de) | 2004-01-27 | 2005-09-01 | Wagner Alarm- Und Sicherungssysteme Gmbh | Verfahren zur Auswertung eines Streulichtsignals und Streulichtdetektor zur Durchführung des Verfahrens |
| CN108510701B (zh) * | 2018-03-20 | 2019-11-22 | 深圳市泰和安科技有限公司 | 一种智能烟雾报警方法、装置及系统 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE455987C (de) * | 1924-04-11 | 1928-02-11 | John Joseph Dowling | Vorrichtung zum Anzeigen von Lichtschwankungen durch eine lichtempfindliche Zelle und ein hochempfindliches Relais |
| DE1024851B (de) * | 1953-05-04 | 1958-02-20 | Electronics Corp America | Anzeigevorrichtung fuer Flammen |
| JPS4429154Y1 (enrdf_load_stackoverflow) * | 1967-04-20 | 1969-12-03 | ||
| GB1278205A (en) * | 1970-02-11 | 1972-06-21 | Shorrock Develpoments Ltd | Smoke detecting device |
| DE2023463B1 (de) * | 1970-05-13 | 1971-12-30 | Preussag Ag Feuerschutz | Optischer Rauchdetektor |
-
1972
- 1972-08-11 GB GB3763372A patent/GB1405615A/en not_active Expired
-
1973
- 1973-08-06 NO NO3132/73A patent/NO132564C/no unknown
- 1973-08-08 DE DE2340041A patent/DE2340041C2/de not_active Expired
- 1973-08-08 IL IL42930A patent/IL42930A/en unknown
- 1973-08-08 AU AU59013/73A patent/AU476368B2/en not_active Expired
- 1973-08-09 NL NL7311010A patent/NL7311010A/xx not_active Application Discontinuation
- 1973-08-09 IT IT51932/73A patent/IT990203B/it active
- 1973-08-10 DK DK439773A patent/DK144255C/da not_active IP Right Cessation
- 1973-08-10 CH CH1157773A patent/CH560434A5/xx not_active IP Right Cessation
- 1973-08-10 FR FR7329293A patent/FR2195813B3/fr not_active Expired
- 1973-08-10 DD DD172840A patent/DD107157A5/xx unknown
- 1973-08-10 ES ES417739A patent/ES417739A1/es not_active Expired
- 1973-08-10 SE SE7310965A patent/SE383793B/xx unknown
- 1973-08-11 JP JP48089688A patent/JPS49132998A/ja active Pending
- 1973-08-13 AT AT708673A patent/AT347300B/de not_active IP Right Cessation
-
1976
- 1976-09-08 HK HK553/76*UA patent/HK55376A/xx unknown
- 1976-12-31 MY MY1976243A patent/MY7600243A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2195813B3 (enrdf_load_stackoverflow) | 1975-10-31 |
| JPS49132998A (enrdf_load_stackoverflow) | 1974-12-20 |
| ES417739A1 (es) | 1976-02-16 |
| IL42930A (en) | 1976-10-31 |
| SE383793B (sv) | 1976-03-29 |
| ATA708673A (de) | 1978-04-15 |
| DE2340041A1 (de) | 1974-04-04 |
| DK144255C (da) | 1982-08-16 |
| AT347300B (de) | 1978-12-27 |
| MY7600243A (en) | 1976-12-31 |
| IL42930A0 (en) | 1973-11-28 |
| DE2340041C2 (de) | 1984-11-29 |
| HK55376A (en) | 1976-09-17 |
| NL7311010A (enrdf_load_stackoverflow) | 1974-02-13 |
| DD107157A5 (enrdf_load_stackoverflow) | 1974-07-12 |
| FR2195813A1 (enrdf_load_stackoverflow) | 1974-03-08 |
| DK144255B (da) | 1982-01-25 |
| IT990203B (it) | 1975-06-20 |
| GB1405615A (en) | 1975-09-10 |
| AU476368B2 (en) | 1976-09-16 |
| CH560434A5 (enrdf_load_stackoverflow) | 1975-03-27 |
| NO132564C (enrdf_load_stackoverflow) | 1975-11-26 |
| AU5901373A (en) | 1975-02-13 |
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