JPS53139590A - Fire detector - Google Patents
Fire detectorInfo
- Publication number
- JPS53139590A JPS53139590A JP5509277A JP5509277A JPS53139590A JP S53139590 A JPS53139590 A JP S53139590A JP 5509277 A JP5509277 A JP 5509277A JP 5509277 A JP5509277 A JP 5509277A JP S53139590 A JPS53139590 A JP S53139590A
- Authority
- JP
- Japan
- Prior art keywords
- fire detector
- signal
- rays
- prodcues
- detectign
- 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
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
PURPOSE:To obtain positively screened fire alarm signal by simultaneously using both detectors of infrared rays and visible rays and outputting a detecting signal only when only the infrared ray detectign system prodcues the signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5509277A JPS53139590A (en) | 1977-05-12 | 1977-05-12 | Fire detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5509277A JPS53139590A (en) | 1977-05-12 | 1977-05-12 | Fire detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53139590A true JPS53139590A (en) | 1978-12-05 |
JPS6145170B2 JPS6145170B2 (en) | 1986-10-07 |
Family
ID=12989082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5509277A Granted JPS53139590A (en) | 1977-05-12 | 1977-05-12 | Fire detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS53139590A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5726451A (en) * | 1994-08-02 | 1998-03-10 | Hochiki Corporation | Scan type fire detecting apparatus |
-
1977
- 1977-05-12 JP JP5509277A patent/JPS53139590A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5726451A (en) * | 1994-08-02 | 1998-03-10 | Hochiki Corporation | Scan type fire detecting apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS6145170B2 (en) | 1986-10-07 |
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