JPS6474695A - Method and device for detecting fire - Google Patents
Method and device for detecting fireInfo
- Publication number
- JPS6474695A JPS6474695A JP23090687A JP23090687A JPS6474695A JP S6474695 A JPS6474695 A JP S6474695A JP 23090687 A JP23090687 A JP 23090687A JP 23090687 A JP23090687 A JP 23090687A JP S6474695 A JPS6474695 A JP S6474695A
- Authority
- JP
- Japan
- Prior art keywords
- infrared rays
- wavelength bands
- radiated
- made incident
- relative ratio
- 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.)
- Granted
Links
Landscapes
- Fire-Detection Mechanisms (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62230906A JP2552148B2 (ja) | 1987-09-17 | 1987-09-17 | 火災検知方法及び装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62230906A JP2552148B2 (ja) | 1987-09-17 | 1987-09-17 | 火災検知方法及び装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6474695A true JPS6474695A (en) | 1989-03-20 |
JP2552148B2 JP2552148B2 (ja) | 1996-11-06 |
Family
ID=16915145
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62230906A Expired - Fee Related JP2552148B2 (ja) | 1987-09-17 | 1987-09-17 | 火災検知方法及び装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2552148B2 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0378899A (ja) * | 1989-08-23 | 1991-04-04 | Nippon Mining Co Ltd | 火災検知装置 |
JPH03263197A (ja) * | 1990-03-13 | 1991-11-22 | Nikko Kyodo Co Ltd | 火災検知方法 |
WO2008064396A1 (en) * | 2006-09-07 | 2008-06-05 | Siemens Schweiz Ag | Improvement(s) related to particle monitors and method(s) therefor |
JP2013072835A (ja) * | 2011-09-29 | 2013-04-22 | Hochiki Corp | 炎感知器及び炎判定方法 |
JP2014093002A (ja) * | 2012-11-05 | 2014-05-19 | Hochiki Corp | 炎検知装置及び炎検知方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50102377A (ja) * | 1974-01-10 | 1975-08-13 | ||
JPS5344937A (en) * | 1976-10-02 | 1978-04-22 | Kokusai Gijutsu Kaihatsu Kk | Flame sensing instrument |
JPS567196A (en) * | 1979-06-29 | 1981-01-24 | Kureha Chemical Ind Co Ltd | Fire detector |
-
1987
- 1987-09-17 JP JP62230906A patent/JP2552148B2/ja not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50102377A (ja) * | 1974-01-10 | 1975-08-13 | ||
JPS5344937A (en) * | 1976-10-02 | 1978-04-22 | Kokusai Gijutsu Kaihatsu Kk | Flame sensing instrument |
JPS567196A (en) * | 1979-06-29 | 1981-01-24 | Kureha Chemical Ind Co Ltd | Fire detector |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0378899A (ja) * | 1989-08-23 | 1991-04-04 | Nippon Mining Co Ltd | 火災検知装置 |
JPH03263197A (ja) * | 1990-03-13 | 1991-11-22 | Nikko Kyodo Co Ltd | 火災検知方法 |
WO2008064396A1 (en) * | 2006-09-07 | 2008-06-05 | Siemens Schweiz Ag | Improvement(s) related to particle monitors and method(s) therefor |
US8269639B2 (en) | 2006-09-07 | 2012-09-18 | Siemens Schweiz Ag | Particle monitors and method(s) therefor |
JP2013072835A (ja) * | 2011-09-29 | 2013-04-22 | Hochiki Corp | 炎感知器及び炎判定方法 |
JP2014093002A (ja) * | 2012-11-05 | 2014-05-19 | Hochiki Corp | 炎検知装置及び炎検知方法 |
Also Published As
Publication number | Publication date |
---|---|
JP2552148B2 (ja) | 1996-11-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5026992A (en) | Spectral ratioing technique for NDIR gas analysis using a differential temperature source | |
AU556398B2 (en) | Dual spectrum frequency responding fire sensor | |
US3665440A (en) | Fire detector utilizing ultraviolet and infrared sensors | |
GB8309211D0 (en) | Infra red absorption gas detectors | |
US4296324A (en) | Dual spectrum infrared fire sensor | |
EP0294996A3 (en) | Scanning fluorescent detection system | |
US4199682A (en) | Fire and explosion detection apparatus | |
EP0588753B1 (en) | Method for detecting a fire condition | |
WO1986006859A3 (en) | Fire sensor cross-correlator circuit and method | |
GB1534969A (en) | Radiation detection apparatus | |
JPS6474695A (en) | Method and device for detecting fire | |
JPS6474696A (en) | Method and device for fire alarm | |
GB2315857B (en) | An electro-optical detection system | |
EP0926647B1 (en) | Method for detecting a fire condition | |
EP0091535A3 (en) | Spectrophotometer with wavelength calibration | |
JPS6219724A (ja) | 炎検知器 | |
JPS542700A (en) | Optical fire detector | |
EP0107425A3 (en) | Radiation pattern change detection | |
EP0715744B1 (en) | Method and apparatus for preventing false responses in optical detection devices | |
JPS6176922A (ja) | 炎検出装置 | |
JPS6098381A (ja) | 物体検知装置 | |
JPS63167242A (ja) | 火災判断装置 | |
JPS5518984A (en) | Infrared ray chopper | |
JPS57178324A (en) | Position detector | |
JPS53139590A (en) | Fire detector |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
LAPS | Cancellation because of no payment of annual fees |