JPS6314900B2 - - Google Patents
Info
- Publication number
- JPS6314900B2 JPS6314900B2 JP20620381A JP20620381A JPS6314900B2 JP S6314900 B2 JPS6314900 B2 JP S6314900B2 JP 20620381 A JP20620381 A JP 20620381A JP 20620381 A JP20620381 A JP 20620381A JP S6314900 B2 JPS6314900 B2 JP S6314900B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- output
- circuit
- logic
- voltage
- 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 claims description 29
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000001934 delay Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000002452 interceptive effect Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 108091008695 photoreceptors Proteins 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)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20620381A JPS58108439A (ja) | 1981-12-22 | 1981-12-22 | 光パルス式煙感知器 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20620381A JPS58108439A (ja) | 1981-12-22 | 1981-12-22 | 光パルス式煙感知器 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58108439A JPS58108439A (ja) | 1983-06-28 |
| JPS6314900B2 true JPS6314900B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1988-04-02 |
Family
ID=16519490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20620381A Granted JPS58108439A (ja) | 1981-12-22 | 1981-12-22 | 光パルス式煙感知器 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58108439A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
1981
- 1981-12-22 JP JP20620381A patent/JPS58108439A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58108439A (ja) | 1983-06-28 |