JPS60192091U - Dimming smoke detector - Google Patents
Dimming smoke detectorInfo
- Publication number
- JPS60192091U JPS60192091U JP7736784U JP7736784U JPS60192091U JP S60192091 U JPS60192091 U JP S60192091U JP 7736784 U JP7736784 U JP 7736784U JP 7736784 U JP7736784 U JP 7736784U JP S60192091 U JPS60192091 U JP S60192091U
- Authority
- JP
- Japan
- Prior art keywords
- smoke detector
- light receiving
- utility
- output
- model registration
- 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
図は本考案減光式煙感知器の一実施例を示すブロック回
路図である。
１は投光部、２は受光部、３は信号線、４は受信機、５
ｃｊ高周波発振器、６は発光素子、７は受光素子、８は
基準電圧発振器、９はスイッチ素子、１０は増幅回路、
１１は検波回路、１２は制御回路、ＴＨはサーミスタ、
ＲＩＲ２は抵抗、Ｑはトランジスタ。The figure is a block circuit diagram showing an embodiment of the dimming type smoke detector of the present invention. 1 is a light emitter, 2 is a light receiver, 3 is a signal line, 4 is a receiver, 5
cj high frequency oscillator, 6 is a light emitting element, 7 is a light receiving element, 8 is a reference voltage oscillator, 9 is a switch element, 10 is an amplifier circuit,
11 is a detection circuit, 12 is a control circuit, TH is a thermistor,
RIR2 is a resistor and Q is a transistor.
Claims (1)
光率を測定することにより光路内の煙の有無を感知する
ようにした構成において、投光部より高周波で変調され
た光信号を間欠的に投光せしめると共に、受光部におい
て受光素子の出力と上記変調周波と同一周波数の基準電
圧信号発振器の出力とを交互に切り換えて増幅検波回路
に入力し、両横波出力を比較せしめることにより増幅検
波回路の温度補償を行なうようにして成る減光式煙感知
器。 （２）実用新案登録請求の範囲第１項記載の減光式煙感
知器において、投光器の発光素子に供給する電流をサー
ミスタによって温度補償して成るもの。[Scope of Claim for Utility Model Registration] An optical signal modulated at a high frequency is intermittently emitted from the optical part, and the output of the light receiving element and the output of a reference voltage signal oscillator having the same frequency as the modulation frequency are alternately switched in the light receiving part to the amplification and detection circuit. (2) The dimming type smoke detector according to claim 1 of the utility model registration claim. A device in which the temperature of the current supplied to the light emitting element of the projector is compensated by a thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7736784U JPS60192091U (en) | 1984-05-25 | 1984-05-25 | Dimming smoke detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7736784U JPS60192091U (en) | 1984-05-25 | 1984-05-25 | Dimming smoke detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60192091U true JPS60192091U (en) | 1985-12-20 |
| JPH0542560Y2 JPH0542560Y2 (en) | 1993-10-26 |
Family
ID=30620372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7736784U Granted JPS60192091U (en) | 1984-05-25 | 1984-05-25 | Dimming smoke detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60192091U (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5127379A (en) * | 1974-08-30 | 1976-03-06 | Nippon Signal Co Ltd | KEMURI KANCHIKI |
| JPS53145498A (en) * | 1977-05-24 | 1978-12-18 | Hochiki Co | Method of preventing wrong operation of reception transmission alarm |
| JPS5631625A (en) * | 1979-08-24 | 1981-03-31 | Hochiki Corp | Smoke detector of photoelectronic type |
| JPS5839552U (en) * | 1981-09-10 | 1983-03-15 | 能美防災工業株式会社 | Light emitting part of dimming type smoke detector |
| JPS58218640A (en) * | 1982-06-14 | 1983-12-19 | Seikosha Co Ltd | Smoke detector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5839552B2 (en) * | 1975-12-29 | 1983-08-30 | ハヤミ オサム | Golf training guide |
-
1984
- 1984-05-25 JP JP7736784U patent/JPS60192091U/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5127379A (en) * | 1974-08-30 | 1976-03-06 | Nippon Signal Co Ltd | KEMURI KANCHIKI |
| JPS53145498A (en) * | 1977-05-24 | 1978-12-18 | Hochiki Co | Method of preventing wrong operation of reception transmission alarm |
| JPS5631625A (en) * | 1979-08-24 | 1981-03-31 | Hochiki Corp | Smoke detector of photoelectronic type |
| JPS5839552U (en) * | 1981-09-10 | 1983-03-15 | 能美防災工業株式会社 | Light emitting part of dimming type smoke detector |
| JPS58218640A (en) * | 1982-06-14 | 1983-12-19 | Seikosha Co Ltd | Smoke detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0542560Y2 (en) | 1993-10-26 |
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