JPH04148493A - Smoke detection device - Google Patents
Smoke detection deviceInfo
- Publication number
- JPH04148493A JPH04148493A JP27222290A JP27222290A JPH04148493A JP H04148493 A JPH04148493 A JP H04148493A JP 27222290 A JP27222290 A JP 27222290A JP 27222290 A JP27222290 A JP 27222290A JP H04148493 A JPH04148493 A JP H04148493A
- Authority
- JP
- Japan
- Prior art keywords
- light
- smoke
- optical axis
- rotation control
- 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.)
- Pending
Links
- 239000000779 smoke Substances 0.000 title claims abstract description 61
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 230000003287 optical effect Effects 0.000 claims abstract description 41
- 230000008033 biological extinction Effects 0.000 abstract 2
- 238000012544 monitoring process Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Fire-Detection Mechanisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
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
関するもめである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a smoke detection device, and in particular to a smoke detection device that can be used in buildings or structures having large spaces.
[従来技術及びその問題点 コ
従来、火災を監視するだ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ボッ)・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かある。大型の建造物もしく
はi遺物て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n4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9
スボッl−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てに上昇す
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、煙が検出されるまてにかかる時間が
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。[Prior art and its problems] Conventionally, smoke detection devices for monitoring fires are of the type that detects smoke that comes to the installation point by installing the smoke detection device on the ceiling, etc. The so-called Subo type that performs detection,
For example, by using light or the like to space the light emitting part and the light receiving part,
There is a so-called separate type that detects smoke that has entered between the emitter and receiver parts, and a so-called separate type that detects linear smoke. When monitoring a large space such as a large building or an i-relic, a large number of these spot-type or separate-type smoke detection devices are installed to detect smoke. Considering the high ceiling as a feature, installing a large number of smoke detection devices is a problem in terms of construction and maintenance.9 Considering the Subol-type smoke detection device, The monitoring range can be covered by using a large number of devices, but in order to detect smoke, it is necessary to wait for the generated smoke to rise to the ceiling surface, and the high ceiling is a structural feature. When you think about it, there is also the problem that it takes a long time for smoke to be detected, making it late to know that a fire has occurred.
この点、分離型減光式グ)煙検出装置を用いた場合には
、スボソl−型と同様に数多く用いて煙検出装置の光軸
を7トリン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かでき
るのて、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てきるものの、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ず顕著になるという不
具合かある。In this regard, when using a separate type attenuated type smoke detection device, it is possible to use a large number of smoke detection devices like the suboso l-type and arrange the optical axes of the smoke detection device in a 7-trinkle shape, so that the smoke can be detected two-dimensionally. In addition, in the case of a separate type attenuation type detection device, it can be installed on the side wall of the monitoring location, so there is no need to install it on the ceiling of a high ceiling. Although the drawbacks of molds can be avoided to some extent, there is the hassle of having to install and maintain the light emitter and light receiver as one unit, which are installed at a distance.
This has the disadvantage that, as mentioned above, when a large number of large monitoring spaces are used to cover a large area, problems with construction and maintenance become more and more obvious.
1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、
該平面的に検出するようにすることにより広い監視範囲
に拡散している煙の存在をも判別することかてきるよう
にし、さらに煙検出装置の大空間での施工性の問題企む
解決するようにしている。Means for Solving Problem 1] Therefore, the present invention enables smoke to be detected in a substantially planar manner in a large space with a wide monitoring range, and
By detecting the smoke in a two-dimensional manner, it is possible to detect the presence of smoke that has spread over a wide monitoring range, and the problem of workability of the smoke detection device in large spaces can be solved. I have to.
そのため、本発明によれば、1つの光源と51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、を備えた煙検出装
置が提供される。Therefore, according to the present invention, one light source, 51 light receiving sections, a rotation control section that controls the optical axis of the light emitted from the light source to rotate, and a rotation control section that controls the light emitted from the light source to the light receiving section. A smoke detection device is provided, comprising: a plurality of reflecting plates disposed at a turning point of the optical axis so as to reflect the light toward the light receiving section; and a processing section that determines the presence of smoke from the amount of light received by the light receiving section. be done.
1つの態様によれば、上記構成において、1つの光源と
、]つの受光部と、前記光源から発光する先の光軸を旋
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tLか複数個の反射板と、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
備んた系統か2系統辺上組合わされる。According to one aspect, in the above configuration, one light source, two light receiving sections, a rotation control section that controls to rotate the optical axis of the light emitted from the light source, and a rotation control section that controls the optical axis of the light emitted from the light source. a plurality of reflecting plates arranged at the turning point of the optical axis so as to reflect light toward the light receiving section; and a processing section that determines the presence of smoke from the amount of light received by the light receiving section. Two strains are combined on the side.
[作用 7
1つa)光源からの例えばし−サ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求めることができ、従って
煙の検出を行うことができる。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 大卒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
の施工性をも改善している。また、上記構成を2系統設
けれは、拡散した煙の検出や煙の発生位置を知ることも
てきる等、煙の発生を一層正確に検出することができる
。[Function 7 1a) The optical axis of the e.g. beam from the light source is rotated by the rotation control unit, and the optical axis reflected by the reflection plate is received by the first light receiving unit. The light attenuation rate in the optical path can be determined from the amount of light received at , and smoke can therefore be detected. In this way, for example, the laser beam from one light source is rotated by the rotation control unit, so it is possible to detect smoke in a two-dimensional manner so that no smoke is missed in the university graduate room, and it is also easy to install in large spaces. has also been improved. Furthermore, by providing two systems with the above configuration, the occurrence of smoke can be detected more accurately, such as by detecting diffused smoke and knowing the position where smoke is generated.
し実施例 1
第1図は、本発明、ア)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、そして第3図は2第1図に示した反射
板3a〜3fの1つBを詳しく示している。Embodiment 1 FIG. 1 is a schematic view from above of the present invention, a) smoke detection device arranged in a monitoring area, and FIG. 2 shows the light emitting/receiving section shown in FIG. 1 and the rotation control unit 2 are shown in detail, and FIG. 3 shows one B of the reflecting plates 3a to 3f shown in FIG. 2 in detail.
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か設け
られ、該授受光部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。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並ひに回転制御部2に接続
されて示されている。As shown in FIG. 1, a light transmitting/receiving section 1 of the smoke detection device of the present invention is installed in a large space S such as a gymnasium or a hall, and a rotation control section is placed on a wall near the light transmitting/receiving section 1. 2
, and reflective plates 3a to 3f are arranged radially on the wall of a large space S centered on the rotation control unit 2. A processing device 4 is shown connected to the light emitting/receiving section 1 and the rotation control section 2 in order to control the rotation of the rotation control section 2 and process the received signals.
第2図に示されるように、投受光部1は、レーザ光′f
j11と、フォトダイオード等による受光素T−12と
を備えていて、ハーフミラ−13により両者の光軸が1
つに合わされている。投受光部1ffj’&軸は、フィ
ルタ14を介する外部からのノイ7、尤の入射を防dl
している。レーザ光源11の電源は比較的高電圧かゼ・
要なのて、他の装置と別電源とすることか好ましい。As shown in FIG.
j11 and a light receiving element T-12 such as a photodiode, and the optical axes of both are aligned by a half mirror 13.
It is tailored to. The light emitting/receiving unit 1ffj'& axis prevents noise 7 and other noise from entering from the outside via the filter 14.
are doing. The power source of the laser light source 11 is relatively high voltage.
Therefore, 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
させる。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3図に示す概略図のように、
筐体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てよい。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、入射方向へ光か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は必要ない。The rotation control unit 2 receives the optical axis of the light emitting/receiving unit 1 via a mirror 21, and rotates a mirror 24 around an axis 23 by a motor unit 22.
By rotating the optical axis, the optical axis is oriented toward the plurality of reflecting plates 3. The reflecting plate 3 represents one of the plurality of reflecting plates shown in FIG. 1, and for example, as shown in the schematic diagram shown in FIG. 3,
A corner cube mirror 33 may be incorporated into the housing 31 via a heater 32 for preventing dew condensation. This reflecting plate 3 has a structure that reflects light in the incident direction even if the reflecting surface is not provided exactly perpendicular to the optical axis. The heater 32 is not required in a well-conditioned space.
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]2の受光タイミング
、モータ部22の回転制御を行い、さらに、受光部]2
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, and controls the pulse emission of the laser light source 11, the light reception timing of the light receiving element 2, and the rotation of the motor unit 22 according to the timing of the pulses output from the pulse oscillator. Light receiving part] 2
The presence of smoke is determined from the amount of light received.
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・1の制御力下に旋回され、例として6カ所
に配置されて示さhている反射板38〜3fに向けられ
る。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により光軸か各反射板
3.−1−31に向けられたときを判断し、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]1
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から読込む。各反則板からの反射光量ごとに過
去のテークを記憶しておくことにより、各光軸ことに反
射光の減光した割合を求めることかでき、その値から煙
の存在を判別することかできる。成る光軸において検出
された減光率すなわち煙の存在量が所定値以上であれは
火災信号を送出する等の任意の動作を取り得る。本構成
ては反射板3を6カ所に設けているが、その数は必要に
応し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/receiving section 1 is rotated by the rotation control section 2 under the control force of the processing device 1, and is directed toward the reflecting plates 38 to 3f shown in h, which are arranged at six locations as an example. It will be done. The processing device 4 controls the optical axis or each reflector 3 . -1-31, and when it is determined that it is directed to each reflector, the laser light source of the light emitting/receiving unit 1]1
The amount of reflected light from each of the reflecting plates 3a to 3f is read from the light receiving element 12. By memorizing past takes for each amount of reflected light from each fouling plate, it is possible to determine the percentage of reduced light reflected from each optical axis, and from that value it is possible to determine the presence of smoke. . If the light attenuation rate detected on the optical axis, that is, the amount of smoke present, is greater than a predetermined value, arbitrary actions such as sending out a fire signal can be taken. Although the reflector plates 3 are provided at six locations in this configuration, it goes without saying that the number can be changed as required.
なお、上記のように、減光の割合(すなわち減光率もし
くは減光量)を各光軸ことに算出し、任意の光軸におけ
る減光量か所定値以上である場合に火災信号を送出する
等の動作を取るようにしてもよいが、全光軸における減
光の割合を全体的に6計し、その合計値か所定値以上で
ある場合に火災信号を送出する等の動作3取らせるよう
にしてもよい。すなわち、大空間を監視する場合には天
井が高いことか多く、そのため、煙か拡散しているのて
各光軸ての減光の割合は小さなものになる。In addition, as mentioned above, the rate of light attenuation (i.e., the light attenuation rate or the amount of light attenuation) is calculated for each optical axis, and if the amount of light attenuation on any optical axis is greater than or equal to a predetermined value, a fire signal is sent out, etc. However, it may be possible to take action 3, such as adding up the percentage of light attenuation in all optical axes to six overall values, and sending out a fire signal when the total value is greater than a predetermined value. You may also do so. In other words, when monitoring a large space, the ceiling is often high, so the rate of light attenuation on each optical axis is small due to the smoke being diffused.
従−)で、各光軸での減光の割合が小さくても、全体的
に減光している場合には、煙か拡散し、て存6−してい
ると判断できる。この場合、1つの監視区域に上記構成
を2系統設ける、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づるのか良い。というのは、1系統
だけの場合には、1つの反射板と次の反射板との間はそ
の間に存在する煙の監視を行うことができない非監視部
分となるが、2系統設けて例えば1平面をマ■・リクス
状に監視すれば、非監視部分を減らすことがてきるから
である。また、2系統設けてマl〜リクス状にすれば、
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−)で煙の位置を推定
することが可能となる。Even if the rate of light attenuation on each optical axis is small, if the light is attenuated overall, it can be determined that smoke has diffused and is still present. In this case, it is preferable to provide two systems of the above-mentioned configuration in one monitoring area, that is, to perform smoke monitoring from two positions in the monitoring area on one plane using the light emitting/receiving unit and the rotation control unit. This is because if there is only one system, the area between one reflector and the next becomes a non-monitoring area where smoke existing between them cannot be monitored, but if two systems are provided, for example one This is because if the plane is monitored in a matrix, the unmonitored portions can be reduced. Also, if you install two systems and make them in a matrix shape,
By combining the angles of the two systems, it is possible to accurately determine the direction in which the smoke exists, and it is possible to estimate the position of the smoke.
また、反射板3a〜3fはスボ、 +−的に配置されて
いるか、帯状にして連続的に設ければ、検出範囲をさら
に広くすることかできるので、拡散した煙を検出し易い
。このように反射板を帯状にする場合には、反射板3を
、コーナーキューブミラ−33よりも弾力性があり湾曲
し易いし−ズ型のミラーを用いたものどするHが自利で
ある。In addition, if the reflecting plates 3a to 3f are arranged in a straight line or continuously in a band shape, the detection range can be further widened, making it easier to detect diffused smoke. In the case where the reflector is made into a belt shape in this way, it is advantageous to replace the reflector 3 with a mirror that is more elastic and easier to bend than the corner cube mirror 33. .
第・1図は、本発明のもう1つの実施例を示す図であり
、上記実施例と異なる所は、回転制御部2の近傍に追加
の反射板3ε、が設けられていることである。この反射
板3Sの役目は、投受光部]からのし−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
として用いることにある。FIG. 1 is a diagram showing another embodiment of the present invention, which differs from the above embodiment in that an additional reflecting plate 3ε is provided near the rotation control section 2. The role of this reflecting plate 3S is to confirm the intensity of the reflected light from the light emitting/receiving section and to use it as a reference for positioning to rotate the optical axis.
すなわち、反射板3sは、光軸の旋回の基準として用い
ることかできるように第4図では反射板3a〜3fの順
番の一番手前すなわち反射板3aの光軸に隣接した位置
に配置されて示されており、かつ、レーザ光源11から
のレーザ光を反射させてその全部を受光素子12て受光
させることができるよっに、回転制御部2の回転鏡24
に距離を開けずに配置される。That is, the reflector 3s is placed at the front of the reflectors 3a to 3f in FIG. 4, that is, at a position adjacent to the optical axis of the reflector 3a, so that it can be used as a reference for turning the optical axis. The rotating mirror 24 of the rotation control unit 2 is shown in FIG.
will be placed without any distance between them.
な」〕、反射板3sは、第4図では、煙検出に関係しな
い位置として反射板3a〜3fの順番の一番手前に配置
されて示されているが、この配置位置はこれに制限され
るものではなく、煙検出に関イ系しない他の位置、例え
ば反射板3a〜3での順番の一番最後であっても良く、
さらには、煙を検出する光軸を外した方向へ設定しさえ
ずれは実用上充分である。In FIG. 4, the reflector plate 3s is shown placed at the front of the reflector plates 3a to 3f as a position not related to smoke detection, but this position is not limited to this. Instead, it may be at another position not related to smoke detection, for example, at the end of the order of the reflectors 3a to 3.
Furthermore, the deviation is sufficient for practical use when the optical axis for detecting smoke is set in a direction away from the optical axis.
第1図の動作において、回転制御部2が光軸を左から右
へ、ずなわち反射板3sがら始めて反射板3a〜3fの
方向に移動させていくものとすると、基準位置としての
反射板3sがらの光軸の移動時間をパルスを用いて計数
する等により、各反射板3aへ3での位置を一層正確に
知ることができ 各反射板の位置に来たときに処理装置
・1は、レーザ光源〕]にレーザ光を発光させることか
てきる。In the operation shown in FIG. 1, if the rotation control unit 2 moves the optical axis from left to right, that is, starting from the reflector 3s and moving in the direction of the reflectors 3a to 3f, the reflector as a reference position is By counting the travel time of the optical axis from 3s using pulses, etc., the position at 3 to each reflecting plate 3a can be known more accurately.When the position of each reflecting plate is reached, the processing device 1 , laser light source] to emit laser light.
また、反射板3sは、レーザ光源11かちのし−ザ光を
全部反射させて受光素子12で受光さぜることかてきる
ように回転制御部2の回転鏡24に距離を開けずに配置
されるので、光軸が反射板3Sの方向に向いて受光素子
12がレーザ光源】1からの発光量のすべてを受光した
ときに、該し−サ光源11からの発光強度を確認するこ
とができ、これにより例えば経年変化によりレーザ光源
の発光量か煙を検出することができない程に落ちた場合
等を確実に検出てきる。Further, the reflection plate 3s is arranged close to the rotating mirror 24 of the rotation control unit 2 so that the laser light from the laser light source 11 can be completely reflected and received by the light receiving element 12. Therefore, when the optical axis is directed toward the reflecting plate 3S and the light receiving element 12 receives the entire amount of light emitted from the laser light source 1, it is possible to check the intensity of light emitted from the corresponding light source 11. This makes it possible to reliably detect, for example, a case where the amount of light emitted by the laser light source has decreased to such an extent that smoke cannot be detected due to aging.
[発明の効果 ]
以上、本発明によれは、1つの光源と、1つの受光部と
、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
することかてきるという効宋かある。[Effects of the Invention] As described above, according to the present invention, one light source, one light receiving section, and a plurality of reflecting plates are provided, and the optical axis of light emitted from the light source is reflected by each reflecting plate. Since the optical axis is rotated by the rotation control unit so that the light is received by the light receiving unit, it is possible to detect smoke in a two-dimensional manner so that no smoke is missed in a large space, and it is easy to install in a large space. It is said that it was effective during the Song Dynasty to significantly improve the situation.
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、反fAt板の−
・構成例を概略的に示す図、第4図は、本発明のもう1
つの実施例を示す図、である。図において、1は投受光
部、11はレーザ光源、]2は受光素子、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。
特許出願人 能美防災株式会社
第
図
反射板3
第4図FIG. 1 is a plan view illustrating a case where the smoke detection device according to the present invention is installed in a large space, FIG. 2 is a schematic configuration diagram showing the smoke detection device according to the present invention, and FIG. 3 is a board-
・A diagram schematically showing a configuration example, FIG. 4, is another diagram of the present invention.
FIG. 3 is a diagram showing two examples. In the figure, 1 is a light emitting/receiving unit, 11 is a laser light source, 2 is a light receiving element, 2 is a rotation control unit, 22 is a motor unit, 24 is a rotating mirror, 3.3a-3f and 3s are reflection plates, 4 is a processing It is a device. Patent applicant Nomi Disaster Prevention Co., Ltd. Figure Reflector 3 Figure 4
Claims (2)
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、を備えた煙検出装置。(1) one light source, one light receiving section, a rotation control section that controls the optical axis of the light emitted from the light source to rotate, and a rotation control section that controls the light emitted from the light source toward the light receiving section. A smoke detection device comprising: a plurality of reflecting plates disposed at a turning point of the optical axis so as to reflect the light; and a processing section that determines the presence of smoke based on the amount of light received by the light receiving section.
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2系統以上組合わせてあ
る請求項1記載の煙検出装置。(2) one light source, one light receiving section, a rotation control section that controls the optical axis of the light emitted from the light source to rotate, and a rotation control section that controls the light emitted from the light source toward the light receiving section. Two or more systems are combined, each of which includes a plurality of reflecting plates disposed at the turning point of the optical axis so as to reflect the light, and a processing section that determines the presence of smoke from the amount of light received by the light receiving section. The smoke detection device according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27222290A JPH04148493A (en) | 1990-10-12 | 1990-10-12 | Smoke detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27222290A JPH04148493A (en) | 1990-10-12 | 1990-10-12 | Smoke detection device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04148493A true JPH04148493A (en) | 1992-05-21 |
Family
ID=17510818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27222290A Pending JPH04148493A (en) | 1990-10-12 | 1990-10-12 | Smoke detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04148493A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015127686A (en) * | 2013-12-27 | 2015-07-09 | 三菱重工業株式会社 | Gas component concentration distribution measurement device and exhaust gas denitrification system |
JP2018040804A (en) * | 2008-06-10 | 2018-03-15 | ギャレット・サーマル・システムズ・リミテッドGarrett Thermal Systems Limited | Particle detection |
EP3889932A1 (en) * | 2020-03-30 | 2021-10-06 | Carrier Corporation | Beam smoke detector system |
-
1990
- 1990-10-12 JP JP27222290A patent/JPH04148493A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018040804A (en) * | 2008-06-10 | 2018-03-15 | ギャレット・サーマル・システムズ・リミテッドGarrett Thermal Systems Limited | Particle detection |
US10309898B2 (en) | 2008-06-10 | 2019-06-04 | Garrett Thermal Systems Limited | Particle detection |
JP2015127686A (en) * | 2013-12-27 | 2015-07-09 | 三菱重工業株式会社 | Gas component concentration distribution measurement device and exhaust gas denitrification system |
EP3889932A1 (en) * | 2020-03-30 | 2021-10-06 | Carrier Corporation | Beam smoke detector system |
US11295588B2 (en) | 2020-03-30 | 2022-04-05 | Carrier Corporation | Beam smoke detector system |
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