JP3027597B2 - Smoke detector - Google Patents
Smoke detectorInfo
- Publication number
- JP3027597B2 JP3027597B2 JP02272223A JP27222390A JP3027597B2 JP 3027597 B2 JP3027597 B2 JP 3027597B2 JP 02272223 A JP02272223 A JP 02272223A JP 27222390 A JP27222390 A JP 27222390A JP 3027597 B2 JP3027597 B2 JP 3027597B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- receiving unit
- smoke
- optical axis
- light source
- 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 - Fee Related
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- Investigating Or Analysing Materials By Optical Means (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Fire-Detection Mechanisms (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、煙検出装置に関し、特に、大空間を有する
建造物もしくは構造物において用いられ得る煙検出装置
に関するものである。Description: TECHNICAL FIELD The present invention relates to a smoke detection device, and more particularly to a smoke detection device that can be used in a building or a structure having a large space.
［従来技術及びその問題点］ 従来、火災を監視するための煙検出装置としては、該
煙検出装置を天井面等に設置し該設置点に来た煙を検出
する型の、点状の煙検出を行ういわゆるスポット型や、
例えば光等を用いて投光部と受光部とを離して配置し、
投・受光部間に侵入した煙を検出する型の、線状の煙検
出を行ういわゆる分離型等がある。大型の建造物もしく
は構造物での大空間を監視する場合には、これらスポッ
ト型もしくは分離型の煙検出装置を多数設置して煙検出
を行っているが、大空間の建造物が構造的な特徴として
高天井であることを考えると、このように多数の煙検出
装置を設置することは施工や保守を行う上で問題であ
る。[Prior art and its problems] Conventionally, as a smoke detection device for monitoring a fire, a point-like smoke of a type in which the smoke detection device is installed on a ceiling surface or the like to detect smoke coming to the installation point. The so-called spot type that performs detection,
For example, the light emitting unit and the light receiving unit are arranged separately using light or the like,
There is a so-called separation type that detects linear smoke and a type that detects smoke that has entered between the light emitting and receiving units. When monitoring large spaces in large buildings or structures, a large number of these spot-type or separated-type smoke detectors are installed for smoke detection. Considering the feature of high ceiling, installation of such a large number of smoke detectors is a problem in construction and maintenance.
スポット型の煙検出装置について考察すると、該検出
装置を数多く用いることにより監視範囲を覆えるが、煙
を検出するためには、発生した煙が天井面までに上昇す
るのを待つ必要があり、構造的な特徴として高天井であ
ることを考えると、煙が検出されるまでにかかる時間が
長く、火災の発生を知るのが遅くなってしまうという問
題点もある。Considering spot-type smoke detectors, the monitoring range can be covered by using many such detectors, but in order to detect smoke, it is necessary to wait for the generated smoke to rise to the ceiling surface, Considering the high ceiling as a structural feature, there is also a problem in that it takes a long time until smoke is detected, and it becomes slow to know the occurrence of a fire.
この点、分離型減光式の煙検出装置を用いた場合に
は、スポット型と同様に数多く用いて煙検出装置の光軸
をマトリックス状に配置することにより２次元的に煙の
位置を割り出すことができ、また、分離型減光式の検出
装置の場合は、監視場所の側壁面に設置することができ
るので、高天井の天井面に設置する必要はない等、スポ
ット型の欠点はある程度回避できるものの、距離を置い
て設けられている投光部と受光部とを一体として施工や
保守管理を行わなければならないという面倒さがあり、
このことは前述のように大空間の監視空間が大きい領域
を包含するために数多く用いた場合には、それにつれて
この施工や保守上の問題もますます顕著になるという不
具合がある。In this respect, in the case of using the separated type extinction type smoke detector, the position of the smoke is two-dimensionally determined by arranging the optical axes of the smoke detector in a matrix using a large number similarly to the spot type. In addition, in the case of the separated type extinction type detection device, it can be installed on the side wall surface of the monitoring place, so there is no need to install it on the ceiling surface of a high ceiling. Although it can be avoided, there is a trouble that it is necessary to perform construction and maintenance management integrally with the light emitting unit and light receiving unit provided at a distance,
As described above, when a large monitoring space is used to cover a large area as described above, the problem of construction and maintenance becomes more remarkable.
［問題点を解決するための手段］ 従って、本発明は、監視範囲の広い大空間における煙
をほぼ平面的に検出することができるようにすると共
に、煙検出装置の大空間での施工性の問題をも解決する
ようにしている。[Means for Solving the Problems] Accordingly, the present invention makes it possible to detect smoke in a large space with a wide monitoring range almost flatly, and to improve the workability of the smoke detection device in a large space. We try to solve problems.
そのため、本発明によれば、１つの光源と、１つの第
１の受光部と、前記光源から発光された光の光軸を旋回
させるように制御する回転制御部と、減光率を測定すべ
く前記光源から発光された前記光を前記第１の受光部に
向けて反射させるように前記光軸の旋回先に配置された
複数個の反射板と、前記光源から発光された光の、前記
反射板で反射された光以外の散乱光を受光するように配
置された第２の受光部と、前記第１及び第２の受光部で
受光した光の受光量から煙の存在を判別する処理部と、
を備え、前記第２の受光部により検出された散乱光を予
報として監視範囲を絞り、前記第１の受光部により検出
された減光率が所定値以上となったときに煙の発生を判
別するようにしたことを特徴とする煙検出装置が提供さ
れる。Therefore, according to the present invention, one light source, one first light receiving unit, a rotation control unit that controls the optical axis of the light emitted from the light source to rotate, and a dimming rate are measured. In order to reflect the light emitted from the light source toward the first light receiving unit, a plurality of reflectors disposed at a turning point of the optical axis, and the light emitted from the light source, A second light receiving unit arranged to receive scattered light other than the light reflected by the reflector, and a process of determining the presence of smoke from the amount of light received by the first and second light receiving units Department and
The scattered light detected by the second light receiving unit is used as a forecast to narrow the monitoring range, and when the dimming rate detected by the first light receiving unit exceeds a predetermined value, the generation of smoke is determined. A smoke detection device is provided.
１つの態様によれば、上記構成において、１つの光源
と、１つの受光部と、前記光源から発光された光の光軸
を旋回させるように制御する回転制御部と、前記光源か
ら発光された前記光を前記第１の受光部に向けて反射さ
せるように前記光軸の旋回先に配置された複数個の反射
板と、前記受光部の受光量から煙の存在を判別する処理
部と、を備えた系統が１平面のマトリクス状に２系統以
上組み合わされる。According to one aspect, in the above configuration, one light source, one light receiving unit, a rotation control unit that controls the optical axis of light emitted from the light source to rotate, and light emitted from the light source A plurality of reflectors disposed at a turning point of the optical axis so as to reflect the light toward the first light receiving unit, and a processing unit that determines the presence of smoke from the amount of light received by the light receiving unit, Are combined in a one-plane matrix.
また、本発明によれば、１つの光源と、１つの受光部
と、前記光源から発光する光の光軸を旋回させるように
制御する回転制御部と、前記光源から発光された前記光
を前記受光部に向けて反射させるように前記光軸の旋回
先に配置された複数個の反射板と、前記受光部の受光量
から煙の存在を判別する処理部と、を備え、前記複数の
反射板が、大空間の壁面に放射状に配置され、また、前
記光源が、各反射板に向いた時点で発光されて前記受光
部から反射光量が読込まれ、前記各反射板からの反射光
量ごとに過去のデータを記憶しておくことにより、各反
射反への光軸ごとに反射光の減光した割合を求めること
を特徴とする煙検出装置が提供される。Further, according to the present invention, one light source, one light receiving unit, a rotation control unit that controls the optical axis of light emitted from the light source to rotate, and the light emitted from the light source A plurality of reflectors disposed at a turning point of the optical axis so as to reflect toward the light receiving unit, and a processing unit for determining the presence of smoke from the amount of light received by the light receiving unit; The plate is radially arranged on the wall surface of the large space, and the light source emits light at the time when the light source faces each of the reflection plates, and the amount of reflected light is read from the light receiving portion. By storing past data, a smoke detection device is provided, in which a reduced ratio of reflected light is determined for each optical axis of each reflected beam.
さらに、他の態様によれば、１つの光源と、１つの受
光部と、前記光源から発光する光の光軸を旋回させるよ
うに制御する回転制御部と、前記光源から発光された前
記光を前記受光部に向けて反射させるように前記光軸の
旋回先に配置された複数個の反射板と、前記受光部の受
光量から煙の存在を判別する処理部と、を備えた系統が
１平面のマトリクス状に２系統以上組み合わせられる。Further, according to another aspect, one light source, one light receiving unit, a rotation control unit that controls the optical axis of the light emitted from the light source to rotate, and the light emitted from the light source. A system comprising: a plurality of reflectors disposed at a turning point of the optical axis so as to reflect the light toward the light receiving unit; and a processing unit that determines the presence of smoke from the amount of light received by the light receiving unit. Two or more systems are combined in a planar matrix.
また、さらに他の態様によれば、回転制御部が光軸を
旋回させる位置決めの基準とする反射板が、該回転制御
部の近傍に設けられる。According to still another aspect, a reflection plate is provided near the rotation control unit as a reference for positioning the rotation control unit to rotate the optical axis.
［作用］ １つの光源からの例えばレーザ光線の光軸が回転制御
部により旋回され、反射板に当たって反射された光軸は
第１の受光部で受光され、該第１の受光部における受光
量から光路における減光率を知ることができる。また、
第２の受光部により反射板で反射された光以外の散乱光
をも受光することができる。このように１つの光源から
の例えばレーザ光線を回転制御部により旋回させるよう
にしているので、大空間において煙を見逃さないように
平面的に煙検出を行うことができると共に、大空間での
施工性を改善でき、さらに１つの光源から発光され第１
の受光部で受光された光による減光率と第２の受光部で
受光された散乱光との双方により煙監視を行うようにし
ているので、より信頼性の高い煙検出を行うことができ
る。この場合、散乱光による監視を予報とし、減光率に
よる監視で確認するようにすることができる。また、上
記構成を２系統設ければ、煙の発生位置をも知ることが
できる。[Operation] The optical axis of, for example, a laser beam from one light source is turned by the rotation control unit, and the optical axis reflected by the reflection plate is received by the first light receiving unit. The extinction rate in the optical path can be known. Also,
The scattered light other than the light reflected by the reflection plate by the second light receiving unit can be received. In this way, for example, a laser beam from one light source is swirled by the rotation control unit, so that smoke can be detected two-dimensionally so as not to miss smoke in a large space, and construction in a large space can be performed. Can be improved.
Smoke monitoring is performed based on both the extinction ratio due to the light received by the light receiving portion and the scattered light received by the second light receiving portion, so that more reliable smoke detection can be performed. . In this case, the monitoring based on the scattered light can be used as the forecast and the monitoring based on the extinction ratio can be used for confirmation. Further, if the above configuration is provided in two systems, it is possible to know the position where smoke is generated.
［実施例］ 第１図は、本発明の煙検出装置を監視区域に配置した
ところを上方から概略的に示したものであり、第２図で
は、第１図に示した投受光部１及び回転制御部２を詳し
く示しており、第３図は、投受光部１を前面から見たと
ころを示しており、そして第４図は、第２図に示した反
射板３すなわち第１図に示した反射板3a〜3f並びに3sの
１つを代表して詳しく示している。[Embodiment] Fig. 1 schematically shows, from above, a place where the smoke detection device of the present invention is arranged in a monitoring area, and Fig. 2 shows a light emitting and receiving unit 1 and a light emitting unit 1 shown in Fig. 1. FIG. 3 shows the rotation control unit 2 in detail, FIG. 3 shows the light emitting and receiving unit 1 as viewed from the front, and FIG. 4 shows the reflector 3 shown in FIG. 2, that is, FIG. One of the illustrated reflectors 3a to 3f and 3s is shown in detail as a representative.
第１図に示されるように、例えば体育館やホールのよ
うな大空間Ｓに対し本願の煙検出装置の投受光部１が設
けられ、該投受光部１に近接した壁の位置に回転制御部
２が設けられ、回転制御部２を中心とした大空間Ｓの壁
面に反射板3a〜3fが放射状に配置されている。また、回
転制御部２の近傍には追加の反射板3sが設けられてお
り、この反射板3sは、投受光部１からのレーザ光の強度
を確認すると共に、光軸を旋回させる位置決めのための
基準として用いられる。回転制御部２の回転制御並びに
受信された信号の処理を行うべく、処理装置４が投受光
部１並びに回転制御部２に接続されて示されている。As shown in FIG. 1, for example, a large light space S such as a gymnasium or a hall is provided with a light emitting and receiving unit 1 of the smoke detection device of the present application, and a rotation control unit is provided at a position of a wall close to the light emitting and receiving unit 1. 2 are provided, and reflectors 3a to 3f are radially arranged on the wall surface of the large space S around the rotation control unit 2. An additional reflector 3s is provided in the vicinity of the rotation controller 2. The reflector 3s is used for confirming the intensity of the laser beam from the light emitting and receiving unit 1 and for positioning the optical axis to be turned. It is used as a reference. A processing device 4 is shown connected to the light emitting and receiving unit 1 and the rotation control unit 2 for controlling the rotation of the rotation control unit 2 and processing the received signal.
第２図に示されるように、投受光部１は、レーザ光源
11と、フォトダイオード等による受光素子12とを備えて
いて、ハーフミラー13により両者の光軸が１つに合わさ
れている。投受光部１の光軸は、フィルタ14を介する外
部からのノイズ光の入射を防止している。その周囲には
受光素子12と同様の複数の散乱光受光素子15が円周上対
称に設けられていて、一例として４個の散乱光受光素子
を設けた場合についてその配置例が第３図に示されてい
る。レーザ光源11の電源は比較的高電圧が必要なので、
他の装置と別電源とすることが好ましい。As shown in FIG. 2, the light emitting and receiving unit 1 includes a laser light source.
A light receiving element 12 including a photodiode and the like are provided, and the optical axes of the two are aligned by a half mirror 13. The optical axis of the light emitting / receiving section 1 prevents noise light from entering from outside via the filter 14. A plurality of scattered light receiving elements 15 similar to the light receiving element 12 are provided around the circumference of the scattered light receiving element 15, and an example of the arrangement of four scattered light receiving elements as an example is shown in FIG. It is shown. Since the power supply of the laser light source 11 requires a relatively high voltage,
It is preferable to use a separate power supply from other devices.
回転制御部２は、投受光部１の光軸をミラー21を介し
て受け、モータ部22により軸23を中心に回転鏡24を回転
させることにより、光軸を複数の反射板３へ配向させつ
つ監視区域内を平面的に走行させる。The rotation control unit 2 receives the optical axis of the light emitting and receiving unit 1 via the mirror 21, and rotates the rotating mirror 24 about the axis 23 by the motor unit 22 to orient the optical axis to the plurality of reflecting plates 3. While traveling in the surveillance area in a plane.
反射板３は、第１図の複数の反射板の内の１枚を示し
ており、例えば、第４図に示す概略図のように、筺体31
に結露防止用のヒータ32を介してコーナーキューブミラ
ー33が組み込まれているものでよい。この反射板３は、
反射面を光軸に対して正確に垂直に設けなくても、入射
方向へ光が反射する構造となっている。ヒータ32は、空
調の行き届いた空間であれば必要ない。The reflecting plate 3 shows one of a plurality of reflecting plates in FIG. 1, and for example, as shown in a schematic diagram in FIG.
In addition, a corner cube mirror 33 may be incorporated via a heater 32 for preventing condensation. This reflecting plate 3
Even if the reflecting surface is not provided exactly perpendicular to the optical axis, the light is reflected in the incident direction. The heater 32 is not required if the space is well-conditioned.
処理装置４はパルス発振器を内蔵しており、該パルス
発振器から出力されるパルスのタイミングにより、レー
ザ光源11のパルス発光、受光素子12の受光タイミング、
モータ部22の回転制御を行い、さらに、受光素子12及び
散乱光受光素子15からの受光量から煙の存在を判別す
る。The processing device 4 has a built-in pulse oscillator. The pulse emission of the laser light source 11, the light reception timing of the light receiving element 12,
The rotation of the motor unit 22 is controlled, and the presence of smoke is determined from the amount of light received from the light receiving element 12 and the scattered light receiving element 15.
投受光部１から投光される光の光軸は回転制御部２に
より処理装置４の制御の下に旋回され、一例として６カ
所に配置されて示されている反射板3a〜3fに向けられる
ように監視区域内を走行される。すなわち、処理装置４
は、内蔵しているパルス発振器から出力される信号を基
に、回転制御部２により光軸が基準の反射板3sから各反
射板3a〜3fまでに達するときまでを判断し、各反射板に
向いたと判断された時点で投受光部１のレーザ光源11を
発光させて各反射板3a〜3fからの反射光量を受光素子12
で読込むと共に、監視区域からの散乱光を散乱光受光素
子15で読込む。散乱光受光素子15で検出された値は所定
のレベルと比較されて煙の存在が判別され、受光素子12
で検出された値は、各反射板3a〜3fからの反射光量ごと
に過去のデータを記憶しておくことにより、各光軸ごと
に反射光の減光した割合を求め、その値から煙の存在を
判別することができる。このようにして煙の存在が検出
されれば、火災信号を送出する等の任意の動作を取り得
る。本構成では反射板３を６カ所に設けているが、その
数は必要に応じて変更可能であるのは勿論である。The optical axis of the light emitted from the light emitting and receiving unit 1 is turned by the rotation control unit 2 under the control of the processing device 4 and directed to the reflecting plates 3a to 3f arranged and shown in six places as an example. Travel in the monitored area. That is, the processing device 4
Is based on a signal output from a built-in pulse oscillator, the rotation control unit 2 determines until the optical axis reaches from the reference reflector 3s to each of the reflectors 3a to 3f. The laser light source 11 of the light emitting and receiving unit 1 is caused to emit light when it is determined that the light is reflected, and the amount of light reflected from each of the reflecting plates 3a to 3f is detected by the light receiving element
And the scattered light from the monitoring area is read by the scattered light receiving element 15. The value detected by the scattered light receiving element 15 is compared with a predetermined level to determine the presence of smoke,
The value detected in is obtained by storing past data for each amount of reflected light from each of the reflectors 3a to 3f, thereby obtaining a reduced ratio of reflected light for each optical axis, and calculating the smoke The presence can be determined. If the presence of smoke is detected in this way, an arbitrary operation such as sending out a fire signal can be taken. In this configuration, the reflecting plates 3 are provided at six positions, but the number of the reflecting plates 3 can be changed as needed.
本構成の受光素子12による減光式の煙監視と、散乱光
受光素子15による散乱光式の煙監視とを両者を比較しな
がらそれら判別方法について説明すると、散乱光式は、
煙が受光部に近い方が受光量が大きく、遠くなると受光
量は次第に小さくなる。すなわち、煙の位置によって検
出する度合いが異なる。それに対して減光式は、光軸上
のどの位置でも同じ減光率である。しかし、減光率は、
本構成において反射板が必要であり、その位置でしか煙
を検出することができない。それに対して散乱光式は、
平面的に全方向に対して煙を検出することができる。両
者を比較すると、減光式の方が正確に煙を検出し、散乱
光式の方が広範囲を監視できる。A description will be given of a method of determining the light reduction type smoke monitoring using the light receiving element 12 of the present configuration and the scattered light type smoke monitoring using the scattered light receiving element 15 while comparing both.
The closer the smoke is to the light receiving portion, the larger the amount of light received, and the farther the smoke, the smaller the amount of received light gradually decreases. That is, the degree of detection differs depending on the position of smoke. In contrast, the dimming method has the same dimming rate at any position on the optical axis. However, the dimming rate is
In this configuration, a reflector is required, and smoke can be detected only at that position. In contrast, the scattered light formula is
Smoke can be detected in all directions in a plane. Comparing the two, the dimming type can detect smoke more accurately, and the scattered light type can monitor a wider area.
従って、その信号の組合わせは、まず散乱光式でのみ
煙を検出した場合、それを予報とし、その位置を挟む光
軸を減光式で集中的に監視し、その位置で減光式での煙
が検出されたら煙と判別する。また、減光式でのみ煙を
検出した場合、その光軸の周辺を散乱光式で監視し、散
乱光式でも検出するときに煙と判別する。さらに、両者
の判別レベルに重付け等により差を付ける等種々のパタ
ーンに構成することができる。Therefore, as for the combination of the signals, first, when smoke is detected only by the scattered light type, it is used as a forecast, the optical axis sandwiching that position is intensively monitored by the dimming type, and the dimming type If smoke is detected, it is determined to be smoke. When smoke is detected only by the dimming method, the periphery of the optical axis is monitored by the scattered light method, and when the smoke is also detected by the scattered light method, it is determined to be smoke. Furthermore, various patterns can be configured such that a difference is provided between the two discrimination levels by weighting or the like.
また、１つの監視区域に上記構成を２系統設ければ、
すなわち、例えば１平面の監視区域において２つの位置
から投受光部並びに回転制御部により煙監視を行うよう
にすれば、２系統の角度を組合わせることにより煙の存
在する方向を正確に決定することができ、従って煙の位
置を推定することが可能となる。If two systems are provided in one monitoring area,
That is, for example, if the smoke monitoring is performed by the light emitting and receiving unit and the rotation control unit from two positions in the monitoring area of one plane, the direction in which the smoke exists can be accurately determined by combining the angles of the two systems. Therefore, the position of the smoke can be estimated.
［発明の効果］ 以上、本発明によれば、１つの光源と、１つの第１の
受光部と、複数個の反射板とを設け、光源から発光され
る光の光軸が各反射板で反射されて第１の受光部で受光
されるように回転制御部により該光軸を旋回させるよう
にし、さらに散乱光を受光するように第２の受光部をも
設け、処理部により前記第１及び第２の受光部で受光し
た光の受光量から煙の存在を判別し、前記第２の受光部
により検出された散乱光を予報として監視範囲を絞り、
前記第１の受光部により検出された減光率が所定値以上
となったときに煙の発生を判別するようにしたので、大
空間において煙を見逃さないように平面的に煙検出を行
うことができると共に、大空間での施工性を大幅に改善
することができ、さらに１つの光源から発光され第１の
受光部で受光された光による減光率と第２の受光部で受
光された散乱光との双方により煙監視を行うようにして
いるので、より信頼性の高い煙検出を行うことができる
という効果がある。[Effects of the Invention] As described above, according to the present invention, one light source, one first light receiving unit, and a plurality of reflectors are provided, and the optical axis of light emitted from the light source is determined by each reflector. The optical axis is turned by the rotation control unit so as to be reflected and received by the first light receiving unit, and a second light receiving unit is further provided so as to receive the scattered light. And the presence of smoke is determined from the amount of light received by the second light receiving unit, and the scattered light detected by the second light receiving unit is used as a forecast to narrow the monitoring range,
Since the occurrence of smoke is determined when the dimming rate detected by the first light receiving unit is equal to or more than a predetermined value, the smoke is detected two-dimensionally so that the smoke is not missed in a large space. And the workability in a large space can be greatly improved. Further, the extinction ratio due to the light emitted from one light source and received by the first light receiving unit and the light received by the second light receiving unit Since smoke monitoring is performed using both the scattered light and the scattered light, there is an effect that more reliable smoke detection can be performed.
第１図は、本発明による煙検出装置を大空間に設置した
場合を例示的に示す平面図、第２図は、本発明による煙
検出装置を示す概略構成図、第３図は、第２図の投受光
部を左から見た左側面図、第４図は、反射板の一構成例
を概略的に示す図、である。図において、１は投受光
部、11はレーザ光源、12は減光率用の受光素子、15は散
乱光受光素子、２は回転制御部、22はモータ部、24は回
転鏡、３、3a〜3f及び3sは反射板、４は処理装置であ
る。FIG. 1 is a plan view exemplarily showing a case where a smoke detection device according to the present invention is installed in a large space, FIG. 2 is a schematic configuration diagram showing a smoke detection device according to the present invention, and FIG. FIG. 4 is a left side view of the light emitting and receiving unit in the figure as viewed from the left, and FIG. 4 is a diagram schematically illustrating a configuration example of a reflector. In the figure, 1 is a light emitting and receiving unit, 11 is a laser light source, 12 is a light receiving element for dimming rate, 15 is a scattered light receiving element, 2 is a rotation control unit, 22 is a motor unit, 24 is a rotating mirror, 3 and 3a. Reference numerals 3f and 3s are reflection plates, and 4 is a processing device.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭54−92789（ＪＰ，Ａ) 実開 平１−160358（ＪＰ，Ｕ) 実開 昭55−124090（ＪＰ，Ｕ) 実開 昭63−2145（ＪＰ，Ｕ) 実開 昭62−92459（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G08B 17/00 - 17/12 G01J 1/00 - 1/60 G01J 11/00 G01N 21/00 - 21/01 G01N 21/17 - 21/61 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-92789 (JP, A) JP-A 1-160358 (JP, U) JP-A 55-124090 (JP, U) JP-A 63-92 2145 (JP, U) Actually open 1987-92459 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) G08B 17/00-17/12 G01J 1/00-1/60 G01J 11/00 G01N 21/00-21/01 G01N 21/17-21/61
Claims (5)
記光源から発光された光の光軸を旋回させるように制御
する回転制御部と、減光率を測定すべく前記光源から発
光された前記光を前記第１の受光部に向けて反射させる
ように前記光軸の旋回先に配置された複数個の反射板
と、前記光源から発光された光の、前記反射板で反射さ
れた光以外の散乱光を受光するように配置された第２の
受光部と、前記第１及び第２の受光部で受光した光の受
光量から煙の存在を判別する処理部と、を備え、前記第
２の受光部により検出された散乱光を予報として監視範
囲を絞り、前記第１の受光部により検出された減光率が
所定値以上となったときに煙の発生を判別するようにし
たことを特徴とする煙検出装置。1. A light source, a first light receiving unit, a rotation control unit for controlling rotation of an optical axis of light emitted from the light source, and the light source for measuring an extinction ratio A plurality of reflectors disposed at a turning point of the optical axis so as to reflect the light emitted from the first light-receiving unit toward the first light-receiving unit, and the reflectors of the light emitted from the light source. A second light receiving unit disposed to receive scattered light other than the reflected light, and a processing unit that determines the presence of smoke from the amount of light received by the first and second light receiving units, The scattered light detected by the second light receiving unit is used as a forecast to narrow the monitoring range, and when the dimming rate detected by the first light receiving unit exceeds a predetermined value, the generation of smoke is determined. A smoke detection device.
から発光する光の光軸を旋回させるように制御する回転
制御部と、前記光源から発光された前記光を前記受光部
に向けて反射させるように前記光軸の旋回先に配置され
た複数個の反射板と、前記受光部の受光量から煙の存在
を判別する処理部と、を備えた系統を１平面のマトリク
ス状に２系統以上組み合わせて成る請求項１記載の煙検
出装置。2. A light source, one light receiving unit, a rotation control unit for controlling the optical axis of light emitted from the light source to rotate, and the light emitted from the light source to the light receiving unit. A system including a plurality of reflectors disposed at a turning point of the optical axis so as to reflect toward the optical axis, and a processing unit for determining the presence of smoke from the amount of light received by the light receiving unit is a matrix of one plane. 2. The smoke detector according to claim 1, wherein the smoke detector is combined with at least two systems.
から発光する光の光軸を旋回させるように制御する回転
制御部と、前記光源から発光された前記光を前記受光部
に向けて反射させるように前記光軸の旋回先に配置され
た複数個の反射板と、前記受光部の受光量から煙の存在
を判別する処理部と、を備え、前記複数の反射板が、大
空間の壁面に放射状に配置され、また、前記光源が、各
反射板に向いた時点で発光されて前記受光部から反射光
量が読込まれ、前記各反射板からの反射光量ごとに過去
のデータを記憶しておくことにより、各反射反への光軸
ごとに反射光の減光した割合を求めることを特徴とする
煙検出装置。3. A light source, a light receiving unit, a rotation control unit for controlling an optical axis of light emitted from the light source to be turned, and the light emitted from the light source to the light receiving unit. A plurality of reflectors disposed at the turning point of the optical axis so as to reflect toward, and a processing unit that determines the presence of smoke from the amount of light received by the light receiving unit, the plurality of reflectors, Radially arranged on the wall surface of the large space, the light source emits light at the time when it faces each reflector, the reflected light amount is read from the light receiving section, and past data is reflected for each reflected light amount from each reflector. A smoke detection apparatus characterized in that a ratio of a reduced amount of reflected light is calculated for each optical axis of each reflected light by storing the reflected light.
から発光する光の光軸を旋回させるように制御する回転
制御部と、前記光源から発光された前記光を前記受光部
に向けて反射させるように前記光軸の旋回先に配置され
た複数個の反射板と、前記受光部の受光量から煙の存在
を判別する処理部と、を備えた系統を１平面のマトリク
ス状に２系統以上組み合わせて成る請求項３記載の煙検
出装置。4. A light source, one light receiving unit, a rotation control unit for controlling the optical axis of light emitted from the light source to rotate, and the light emitted from the light source to the light receiving unit. A system including a plurality of reflectors disposed at a turning point of the optical axis so as to reflect toward the optical axis, and a processing unit for determining the presence of smoke from the amount of light received by the light receiving unit is a matrix of one plane. 4. The smoke detector according to claim 3, wherein the smoke detector is combined with at least two systems.
基準とする反射板を、該回転制御部の近傍に設けた請求
項１又は３記載の煙検出装置。5. The smoke detection device according to claim 1, wherein a reflection plate, which is used as a reference for positioning by which the rotation control section rotates the optical axis, is provided near the rotation control section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02272223A JP3027597B2 (en) | 1990-10-12 | 1990-10-12 | Smoke detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02272223A JP3027597B2 (en) | 1990-10-12 | 1990-10-12 | Smoke detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04148494A JPH04148494A (en) | 1992-05-21 |
| JP3027597B2 true JP3027597B2 (en) | 2000-04-04 |
Family
ID=17510831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02272223A Expired - Fee Related JP3027597B2 (en) | 1990-10-12 | 1990-10-12 | Smoke detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3027597B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918533A (en) * | 2017-02-27 | 2017-07-04 | 中国科学技术大学 | The measurement apparatus of smoke particle delustring scattering properties under a kind of low pressure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020100197A1 (en) * | 2018-11-12 | 2020-05-22 | 日本電気株式会社 | Fire sensing system and fire sensing method |
-
1990
- 1990-10-12 JP JP02272223A patent/JP3027597B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918533A (en) * | 2017-02-27 | 2017-07-04 | 中国科学技术大学 | The measurement apparatus of smoke particle delustring scattering properties under a kind of low pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04148494A (en) | 1992-05-21 |
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