JPS5454084A - Photoelectric smoke detector - Google Patents
Photoelectric smoke detectorInfo
- Publication number
- JPS5454084A JPS5454084A JP12042977A JP12042977A JPS5454084A JP S5454084 A JPS5454084 A JP S5454084A JP 12042977 A JP12042977 A JP 12042977A JP 12042977 A JP12042977 A JP 12042977A JP S5454084 A JPS5454084 A JP S5454084A
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- unit
- oscillatory
- detecting
- 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.)
- Pending
Links
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)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
- Alarm Systems (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12042977A JPS5454084A (en) | 1977-10-06 | 1977-10-06 | Photoelectric smoke detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12042977A JPS5454084A (en) | 1977-10-06 | 1977-10-06 | Photoelectric smoke detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5454084A true JPS5454084A (en) | 1979-04-27 |
Family
ID=14785986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12042977A Pending JPS5454084A (en) | 1977-10-06 | 1977-10-06 | Photoelectric smoke detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5454084A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05166080A (ja) * | 1991-12-16 | 1993-07-02 | Yamato Protec Co | 火災警報器 |
-
1977
- 1977-10-06 JP JP12042977A patent/JPS5454084A/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05166080A (ja) * | 1991-12-16 | 1993-07-02 | Yamato Protec Co | 火災警報器 |
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