JPS5852182B2 - Dimming smoke detector - Google Patents
Dimming smoke detectorInfo
- Publication number
- JPS5852182B2 JPS5852182B2 JP1349476A JP1349476A JPS5852182B2 JP S5852182 B2 JPS5852182 B2 JP S5852182B2 JP 1349476 A JP1349476 A JP 1349476A JP 1349476 A JP1349476 A JP 1349476A JP S5852182 B2 JPS5852182 B2 JP S5852182B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- light
- smoke
- smoke detector
- beams
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
- G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fire-Detection Mechanisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
【発明の詳細な説明】
本発明は、発光素子と受光素子との間に煙が流入したと
き、その煙の存在によって発光素子から受光素子に到達
する光量の減少によって煙感知動作して警報を発生する
減光式煙感知器に関するもので、検出ビームをしゃ断す
る煙以外の異物、たとえば虫が侵入して誤報を発生する
確率を、その検出ビームを複数にすることによって下げ
るとともに、その虫の侵入を知らせることを目的とする
。DETAILED DESCRIPTION OF THE INVENTION According to the present invention, when smoke flows between a light emitting element and a light receiving element, the amount of light reaching the light receiving element from the light emitting element decreases due to the presence of the smoke, and a smoke detection operation is activated to issue an alarm. This technology is related to smoke detectors that reduce the amount of light that emitted from smoke.By using multiple detection beams, it is possible to reduce the probability of false alarms caused by foreign objects other than smoke that block the detection beam, such as insects. The purpose is to notify you of an intrusion.
すなわち、本発明は発光素子からの光線を適当な光学系
により、２ビームまたは２ビ一ム以上に分光し、各々の
ビームについて受光素子出力を監視し、ＡＮＤ回路によ
り煙発生警報を発生するとともに、ＯＲ回路によって異
物侵入注意信号を発生することを特徴とする減光式煙感
知器に関する。That is, the present invention splits the light beam from the light emitting element into two beams or more than two beams using a suitable optical system, monitors the output of the light receiving element for each beam, and generates a smoke alarm using an AND circuit. , relates to a dimming type smoke detector characterized in that an OR circuit generates a foreign object intrusion warning signal.
以下図面を参照しながら本発明に係る減光式煙感知器を
具体的に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The dimming type smoke detector according to the present invention will be specifically described below with reference to the drawings.
第１図は本発明において、２ビ一ム分光した場合の回路
構成図であって、Ａはビーム光学系、１゜２は受光素子
、１’、２’はそれぞれの受光素子１゜２の出力に接続
された増巾器、（ＡＮＤ）は増巾器出力に接続せるＡＮ
Ｄ回路、ＸはＡＮＤ回路に接続せる警報回路、（ＯＲ）
は増巾器出力に接続せるＯＲ回路、ＹはＯＲ回路に接続
せる注意信号回路である。FIG. 1 is a circuit configuration diagram when performing two-beam spectroscopy according to the present invention, where A is a beam optical system, 1°2 is a light receiving element, and 1' and 2' are respective light receiving elements of 1°2. Amplifier connected to the output, (AND) is AN connected to the amplifier output
D circuit, X is an alarm circuit connected to AND circuit, (OR)
is an OR circuit connected to the amplifier output, and Y is a caution signal circuit connected to the OR circuit.
第２図はビーム光学系Ａの発光素子ａからの一つのビー
ムを平面鏡すによって２分光する例を示す回路構成図で
ある。FIG. 2 is a circuit configuration diagram showing an example in which one beam from the light emitting element a of the beam optical system A is divided into two parts using a plane mirror.
次に本発明の動作状態について述べる。Next, the operating state of the present invention will be described.
煙が感知器器体内に侵入した状態では、ビームイおよび
ピームロがしゃ断されるので、増巾器１′および増巾器
２′のそれぞれの出力ともにオン状態となってＡＮＤ回
路の動作により警報回路Ｘを動作させて煙発生の警報を
発生させる。When smoke enters the detector body, BEAM I and PIMRO are cut off, so the outputs of amplifier 1' and amplifier 2' are both turned on, and alarm circuit X is activated by the operation of the AND circuit. operate to generate a smoke alarm.
今、虫のような異物がビームイまたはピームロのいずれ
か一方をしゃ断した場合には、ＯＲ回路が動作により注
意信号回路Ｙを動作させて異物が侵入したことの注意信
号を発生するのである。Now, if a foreign object such as an insect interrupts either the beam I or the beam rod, the OR circuit operates the caution signal circuit Y and generates a warning signal indicating that a foreign object has invaded.
本発明に係る減光式煙感知器は前記のように、発光素子
からの光線を適当な光学系により、２ビームまたは２ビ
一ム以上に分光し、各々のビームについて受光素子出力
を監視しＡＮＤ回路により煙発生警報を発生するととも
に、ＯＲ回路によって異物侵入注意信号を発生するもの
であるから、感知器内に煙以外の虫などの異物が侵入し
た場合でも煙発生と誤認するような警報音を発生する確
率を下げることができるのはもちろん、その異物が侵入
したことを報知する注意信号を発生することができる。As described above, the dimming type smoke detector according to the present invention splits the light beam from the light emitting element into two beams or two or more beams using a suitable optical system, and monitors the output of the light receiving element for each beam. The AND circuit generates a smoke alarm and the OR circuit generates a foreign object intrusion warning signal, so even if a foreign object other than smoke, such as an insect, enters the sensor, the alarm will not be mistaken for smoke generation. Not only can the probability of generating noise be lowered, but also a warning signal can be generated to notify that the foreign object has invaded.
また１個の発生素子を分光しているので発光素子の機能
不良の確率は従来と変らないし、発光素子の発光面の汚
れや粉塵の堆積による発光光線の遮断は片側または部分
的に進行するので２個の受光素子の受光量が片側だけ減
少し、メンテナンスを早期に行える利点がある。Furthermore, since one light-emitting element is separated into spectra, the probability of the malfunction of the light-emitting element remains the same as before, and the emitted light is blocked on one side or in part due to dirt or dust accumulation on the light-emitting surface of the light-emitting element. The amount of light received by the two light-receiving elements is reduced only on one side, which has the advantage of allowing early maintenance.
第１図は本発明に係る減光式煙感知器のブロックダイヤ
グラム回路構成図、第２図は同上の２分光する実施例を
示す回路構成図。
１．２は受光素子、１′２′は増巾器、（ＡＮＤ）はＡ
ＮＤ回路、（ＯＲ）はＯＲ回路、Ｘは警報回路、Ｙは注
意信号回路。FIG. 1 is a block diagram circuit configuration diagram of a dimming type smoke detector according to the present invention, and FIG. 2 is a circuit configuration diagram showing an embodiment of the same two-split light. 1.2 is the light receiving element, 1'2' is the amplifier, (AND) is A
ND circuit, (OR) is OR circuit, X is alarm circuit, Y is caution signal circuit.
Claims (1)
ムまたは２ビ一ム以上に分光し、各々のビームについて
受光素子出力を監視し、ＡＮＤ回路により煙発生警報を
発生するとともに、ＯＲ回路によって異物侵入注意信号
を発生することを特徴とする減光式煙感知器。1. Split the light beam from the light emitting element into 2 beams or more than 2 beams using a suitable optical system, monitor the output of the light receiving element for each beam, generate a smoke alarm using an AND circuit, and use an OR circuit. A dimming type smoke detector characterized in that it generates a foreign object intrusion warning signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1349476A JPS5852182B2 (en) | 1976-02-09 | 1976-02-09 | Dimming smoke detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1349476A JPS5852182B2 (en) | 1976-02-09 | 1976-02-09 | Dimming smoke detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5296586A JPS5296586A (en) | 1977-08-13 |
| JPS5852182B2 true JPS5852182B2 (en) | 1983-11-21 |
Family
ID=11834659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1349476A Expired JPS5852182B2 (en) | 1976-02-09 | 1976-02-09 | Dimming smoke detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5852182B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0140825Y2 (en) * | 1983-10-27 | 1989-12-05 | ||
| WO2020101504A1 (en) * | 2018-11-12 | 2020-05-22 | Evolift As | Handling device for lifting or handling of a load |
| US11320856B2 (en) | 2018-07-13 | 2022-05-03 | 3M Innovative Properties Company | Display systems and devices |
-
1976
- 1976-02-09 JP JP1349476A patent/JPS5852182B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0140825Y2 (en) * | 1983-10-27 | 1989-12-05 | ||
| US11320856B2 (en) | 2018-07-13 | 2022-05-03 | 3M Innovative Properties Company | Display systems and devices |
| WO2020101504A1 (en) * | 2018-11-12 | 2020-05-22 | Evolift As | Handling device for lifting or handling of a load |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5296586A (en) | 1977-08-13 |
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