JPS6151U - Photoelectric smoke detection alarm device - Google Patents
Photoelectric smoke detection alarm deviceInfo
- Publication number
- JPS6151U JPS6151U JP7340085U JP7340085U JPS6151U JP S6151 U JPS6151 U JP S6151U JP 7340085 U JP7340085 U JP 7340085U JP 7340085 U JP7340085 U JP 7340085U JP S6151 U JPS6151 U JP S6151U
- Authority
- JP
- Japan
- Prior art keywords
- output
- pulse
- smoke detection
- delay
- light beam
- 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
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例における回路結線図、第２図
は第１図回路に関する各部の状態を示すグラフである。
ＰＧ・・・パルス発生源、Ｌ・・・発光体、Ｒ・′・・
受光体、ＤＥＬ・・・遅延回路、蔀什・・・可変利得増
幅器、Ｇ・・・レベル比較器付ゲート回路、Ｆ・・・一
致カウンタ。FIG. 1 is a circuit connection diagram in an embodiment of the present invention, and FIG. 2 is a graph showing the state of each part related to the circuit shown in FIG. PG...Pulse source, L...Light emitter, R'...
Photoreceptor, DEL...delay circuit, receiver...variable gain amplifier, G...gate circuit with level comparator, F...coincidence counter.
Claims (1)
流体のチャンバ内表の導入により散乱せしめられたこと
を受光体が検出する煙感知回路において、上記間欠発光
光束に若干遅れて感応する受光体の受光出力を受ける可
変利得増幅器と、一定レベルをこえる上記増幅器のパル
ス出力と上記パルス発生源からのクロツクパルスを遅延
回路により上記一′体が感応するまでの遅延 日にする
時間だけ遅延させた遅延出力とがともに入力されたとき
１つの論理出力を送出するレベル比較器付ゲート回路と
、上記ゲート回路（７）ｌ力金計数するフリツプフロツ
プを含む一致カウンタとを備２（、上記ゲート回路の出
力が少なくとも連続ｎ回以上のｍ回あるときにのみ上記
パル．ス発生源のクロックパルス周期のｍ倍期間警報を
発するようにしたことを特徴とする光電式煙検出報知装
置。In a smoke detection circuit in which a photoreceptor detects that the irradiation light beam emitted intermittently by a pulse source is scattered by the introduction of fire and smoke fluid into the inner surface of the chamber, the photoreceptor senses the intermittent emitted light beam with a slight delay. A variable gain amplifier receives the received light output, and a delay circuit delays the pulse output of the amplifier exceeding a certain level and the clock pulse from the pulse generation source until the unit responds to the delay output. a gate circuit with a level comparator that sends out one logic output when both are input; and a coincidence counter including a flip-flop for counting power (2), the output of the gate circuit is A photoelectric smoke detection and notification device, characterized in that an alarm is issued for a period m times the clock pulse period of the pulse generation source only when there are at least m consecutive n times or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7340085U JPS6151U (en) | 1985-05-17 | 1985-05-17 | Photoelectric smoke detection alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7340085U JPS6151U (en) | 1985-05-17 | 1985-05-17 | Photoelectric smoke detection alarm device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6151U true JPS6151U (en) | 1986-01-06 |
| JPS6123785Y2 JPS6123785Y2 (en) | 1986-07-16 |
Family
ID=30612728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7340085U Granted JPS6151U (en) | 1985-05-17 | 1985-05-17 | Photoelectric smoke detection alarm device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6151U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50114275A (en) * | 1973-11-26 | 1975-09-08 | ||
| JPS53143287A (en) * | 1977-05-19 | 1978-12-13 | Nittan Co Ltd | Photoelectric smoke detector |
| JPS5410757U (en) * | 1977-06-24 | 1979-01-24 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5410757B2 (en) * | 1972-05-16 | 1979-05-09 |
-
1985
- 1985-05-17 JP JP7340085U patent/JPS6151U/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50114275A (en) * | 1973-11-26 | 1975-09-08 | ||
| JPS53143287A (en) * | 1977-05-19 | 1978-12-13 | Nittan Co Ltd | Photoelectric smoke detector |
| JPS5410757U (en) * | 1977-06-24 | 1979-01-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6123785Y2 (en) | 1986-07-16 |
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