JP2009012940A - Obstacle detection device in double door - Google Patents

Obstacle detection device in double door Download PDF

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JP2009012940A
JP2009012940A JP2007176986A JP2007176986A JP2009012940A JP 2009012940 A JP2009012940 A JP 2009012940A JP 2007176986 A JP2007176986 A JP 2007176986A JP 2007176986 A JP2007176986 A JP 2007176986A JP 2009012940 A JP2009012940 A JP 2009012940A
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double door
door
detection device
obstacle detection
reflecting mirror
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Isao Nemoto
功 根本
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Nemoto Kikaku Kogyo KK
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Nemoto Kikaku Kogyo KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an obstacle detection device in a double door found in an elevator detecting an obstacle in a wide area with simple structure. <P>SOLUTION: This obstacle detection device consists of a pair of reflecting mirrors 4a, 4b arranged in a vertical direction on both sides of an opening at the intermediate position of the double door, a projector 1 provided in the lower end of one reflecting mirror 4a, and a receiver 2 provided in the upper end of the other reflecting mirror 4b. An incident beam is reflected while being displaced in its height sequentially. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、エレベータ等に見られる二重扉における障害物検出装置に関する。   The present invention relates to an obstacle detection device in a double door found in an elevator or the like.

建物のエレベータや地下鉄駅などに見られるホームドア等の二重扉には、二重扉の中間で乗客が挟まれたことを検知してエレベータのかごや列車の移動を阻止する安全装置が設けられている。
エレベータの場合、かご側の引き戸の先端部分にセーフティシューと呼ばれる可動部材が取り付けられており、挟まれた乗客あるいは物体がこれを押すことにより存在が検知される構造の安全装置は早くから知られているが、感度が悪く、スイッチが作動するまでに時間がかかるという問題点があった。特許文献1には、セーフティシュー方式の問題点を解消するため、かご側の引き戸の先端部分に取り付けられている「戸先ゴム」の内部に可撓性の圧電センサを設けて時間遅れなしに物体を検知することが記載されている。
Double doors, such as platform doors found in building elevators and subway stations, are equipped with safety devices that detect movement of elevator cars and trains by detecting that passengers are caught between the double doors. ing.
In the case of an elevator, a movable member called a safety shoe is attached to the tip of the sliding door on the car side, and a safety device with a structure in which presence is detected by pressing a sandwiched passenger or object is known from early on. However, there is a problem that the sensitivity is poor and it takes time until the switch operates. In Patent Document 1, in order to eliminate the problem of the safety shoe method, a flexible piezoelectric sensor is provided inside the “door rubber” attached to the tip of the sliding door on the car side, so that there is no time delay. It describes that an object is detected.

また特許文献2には、光学式の距離センサを設けて所定の領域内の物体の有無を検出することが記載されている。
一方、近年地下鉄をはじめとする高速鉄道の駅プラットホームには、転落防止壁(固定壁)および乗降用のホームドアを設けることが推進されている。これについても、二重扉の中間で挟まれる事故に対する安全対策が必要であり、特許文献3には、固定壁の列車側に2組の光電センサを配置することが記載されている。第1の光電センサはホームドアに沿って設置される透過形のものであり、第2の光電センサはこれよりも列車寄りのプラットホーム上を検知領域とする反射形のものである。
Patent Document 2 describes that an optical distance sensor is provided to detect the presence or absence of an object in a predetermined area.
On the other hand, in recent years, it has been promoted to provide a fall prevention wall (fixed wall) and a platform door for getting on and off a station platform of a high-speed railway such as a subway. With regard to this as well, safety measures against an accident sandwiched between double doors are necessary, and Patent Literature 3 describes that two sets of photoelectric sensors are arranged on the train side of the fixed wall. The first photoelectric sensor is a transmissive type installed along the platform door, and the second photoelectric sensor is a reflective type having a detection area on the platform closer to the train.

また特許文献4には、ホーム側のスライドドアの先端に列車に向けて光を照射する光学式の測距センサを取り付け、スライドドアが閉じる際の移動に伴ってホームドアと列車との間を走査して乗客を検知することが記載されている。
特開2004−189431号公報 特開2007−31103号公報 特開2002−37056号公報 特開2004−182077号公報
In Patent Document 4, an optical distance measuring sensor that irradiates light toward the train is attached to the tip of the slide door on the platform side, and the space between the platform door and the train is moved as the slide door closes. It describes scanning to detect passengers.
JP 2004-189431 A JP 2007-31103 A JP 2002-37056 A JP 2004-182077 A

特許文献1に記載の検出装置では、身長のさまざまに異なる大人、幼児、さらには荷物などをもれなく検知するためには縦方向に複数の圧電センサを設けなければならず、またこれら圧電センサは戸先ゴムの裏側で作動するため感度が悪いという問題点がある。
特許文献2に記載の検出装置では、投光器と受光器が各1基であるため、本来検出範囲は検出ビームの照射方向だけであるが、エレベータドアの開閉時間に対して十分に短い周期で検出ビームを水平方向に掃引することによって広い範囲での検出を可能としている。しかしこの検出装置は、単なる投光器、受光器以外に偏光手段、撮像手段、距離検出手段、掃引手段などを必要とするきわめて複雑なもので、経済的な理由のみを考えても実現性に乏しい。
In the detection device described in Patent Document 1, a plurality of piezoelectric sensors must be provided in the vertical direction in order to detect all adults, infants, and luggage with different heights. There is a problem that the sensitivity is poor because it operates on the back side of the rubber tip.
In the detection apparatus described in Patent Document 2, since there is one projector and one light receiver, the detection range is originally only the irradiation direction of the detection beam, but the detection is performed with a period sufficiently short with respect to the opening / closing time of the elevator door. Detection in a wide range is possible by sweeping the beam in the horizontal direction. However, this detection device is extremely complicated and requires a polarizing means, an imaging means, a distance detecting means, a sweeping means, etc. in addition to a simple projector and light receiver, and its feasibility is poor even considering only economic reasons.

一方、特許文献3に記載の安全装置は、プラットホームを含む線路脇の構造物に適用される建築限界をクリアするため、列車に近い部分を検知領域とする第2の光電センサを反射式としたものであるが、このために降雨時などのプラットホーム表面状態によってノイズが発生するという問題点がある。
特許文献4に記載の安全システムは、測距センサの高さが一定であるため、高さの異なる障害物の検出を行うには縦方向に複数のセンサを設けなければならないなどの問題点がある。
On the other hand, in the safety device described in Patent Document 3, the second photoelectric sensor having a detection area in a portion close to a train is made a reflection type in order to clear a building limit applied to a structure beside a track including a platform. However, for this reason, there is a problem that noise is generated depending on the platform surface condition such as rain.
The safety system described in Patent Document 4 has a problem that, for example, a plurality of sensors must be provided in the vertical direction in order to detect obstacles having different heights because the height of the distance measuring sensor is constant. is there.

本発明は、これらの問題点を解消し、簡単な構成で広い領域の障害物を検出できる二重扉における障害物検出装置を実現することを目的とする。   An object of the present invention is to solve these problems and to realize an obstacle detection device in a double door that can detect obstacles in a wide area with a simple configuration.

ところで、本出願人はさきに多重反射形光電式エリアセンサを発明し、特開2006−170793号公報において公開されている。これは図5に示すように、1対のガイド3a、3bにそれぞれ1基以上の反射鏡4a、4bを取り付け、投光器1から照射された光が反射鏡4a、4b間で複数回の反射を行い、高さをずらしながら受光器2に到達するように構成する。図6は反射鏡4を取り付けたガイド3の部分拡大図で、各反射鏡4は同じ傾斜角度で互いに平行である。これにより、従来複数組の投光器、受光器を必要とした広いエリアの障害物の検知を1組の投光器と受光器によって行うことができる。   By the way, the applicant of the present invention invented a multiple reflection type photoelectric area sensor, which is disclosed in Japanese Patent Application Laid-Open No. 2006-170793. As shown in FIG. 5, one or more reflecting mirrors 4a and 4b are attached to a pair of guides 3a and 3b, respectively, and the light emitted from the projector 1 is reflected a plurality of times between the reflecting mirrors 4a and 4b. It is configured to reach the light receiver 2 while shifting the height. FIG. 6 is a partially enlarged view of the guide 3 to which the reflecting mirror 4 is attached. The reflecting mirrors 4 are parallel to each other at the same inclination angle. Thereby, the detection of the obstruction of the wide area which conventionally required multiple sets of light projectors and light receivers can be performed by one set of light projectors and light receivers.

本発明はこのエリアセンサを二重扉における障害物検出に応用したものである。すなわち、二重扉の中間位置の開口部両側に配置した1対の反射鏡と、一方の反射鏡の一方の端部に設けた投光器と、他方の反射鏡の前記端部とは反対側の端部に設けた受光器とから構成され、前記反射鏡が、入射したビームを反対側の反射鏡に位置をずらして反射するように設定されており、前記投光器と前記受光器との間で複数回の反射が行われることを特徴とする二重扉における障害物検出装置であり、望ましくは前記投光器と受光器が使用しているビームの光源がレーザ光である前記の二重扉における障害物検出装置である。   The present invention is an application of this area sensor to obstacle detection in a double door. That is, a pair of reflecting mirrors arranged on both sides of the opening at the middle position of the double door, a projector provided at one end of one reflecting mirror, and the opposite side of the end of the other reflecting mirror A light receiving device provided at an end, and the reflecting mirror is set so as to reflect the incident beam to the reflecting mirror on the opposite side by shifting the position between the light projecting device and the light receiving device. An obstacle detection apparatus for a double door characterized in that reflection is performed a plurality of times, and preferably the obstacle in the double door, wherein the light source of the beam used by the projector and the receiver is a laser beam. This is an object detection device.

本発明によれば、1組の投光器と受光器で幅広いエリアの障害物検出が可能であり、設置費用が安く、メンテナンスも簡単なので二重扉における安全性が向上するというすぐれた効果を奏する。   According to the present invention, it is possible to detect obstacles in a wide area with a pair of projectors and light receivers, and it has an excellent effect of improving safety in double doors because installation costs are low and maintenance is easy.

本発明においては投光器から照射されたビームが二重扉両側の反射鏡の間で高さをずらしながら複数回の反射を繰り返すので、複数組の投光器と受光器を使用した場合に相当し、広いエリアの障害物を検出することができる。   In the present invention, the beam irradiated from the projector repeats reflection a plurality of times while shifting the height between the reflecting mirrors on both sides of the double door, which corresponds to the case where a plurality of sets of projectors and receivers are used. Area obstacles can be detected.

本発明の第1の実施例を、エレベータの場合で図1ないし図3により説明する。図1はエレベータのかご5の正面図、図2は建物6を含む平面図で、51a、51bはかごの扉、52はかごを吊っているロープ、61a、61bは建物の扉である。かごの扉51a、51bと、建物の扉61a、61bで二重扉を構成している。特に説明しないが両者は連動して開閉する。通常、何らかの安全装置により、二重扉の両方が完全に閉じた状態を検知してかごが移動するようになっている。   A first embodiment of the present invention will be described with reference to FIGS. 1 to 3 in the case of an elevator. FIG. 1 is a front view of an elevator car 5, FIG. 2 is a plan view including a building 6, 51a and 51b are car doors, 52 is a rope for suspending the car, and 61a and 61b are doors of the building. The car doors 51a and 51b and the building doors 61a and 61b constitute a double door. Although not specifically described, both open and close in conjunction. Usually, a car is moved by detecting a state where both double doors are completely closed by some safety device.

1は投光器、2は受光器、4a、4bはかご5の両脇に縦方向に取り付けられた細長い反射鏡で、図2に示すようにこれらは同じ垂直平面内になるよう配置される。
図3は図1におけるビームの経路を示す正面図で、縦方向に細長い1対の反射鏡4a、4bと、一方の反射鏡4aの下端に設けられた投光器1と、他方の反射鏡4bの上端に設けた受光器2とから構成され、反射鏡4a、4bは平行にセットされ、投光機は仰角αで上向きにビームを照射する。反対側の反射鏡4bでは法線に対して下方から角度αでビームが入射するのでビームは再び仰角αで反射され、順次位置をずらしながら複数回の反射を繰り返して受光器2に到達する。投光器1、受光器2の位置を逆にしてもよい。
1 is a projector, 2 is a light receiver, and 4a and 4b are elongate reflecting mirrors vertically attached to both sides of the car 5. As shown in FIG. 2, these are arranged in the same vertical plane.
FIG. 3 is a front view showing a beam path in FIG. 1, and shows a pair of reflecting mirrors 4a and 4b elongated in the vertical direction, a projector 1 provided at the lower end of one reflecting mirror 4a, and the other reflecting mirror 4b. The reflecting mirrors 4a and 4b are set in parallel, and the projector emits a beam upward at an elevation angle α. In the opposite reflecting mirror 4b, the beam is incident at an angle α from below with respect to the normal line, so that the beam is reflected again at the elevation angle α and repeatedly reflected a plurality of times while sequentially shifting the position to reach the light receiver 2. The positions of the projector 1 and the light receiver 2 may be reversed.

なお、光源としてレーザ光を使用すると、光束の広がりがほとんどなしに受光器まで到達するので感度が良好に保たれて都合がよい。ただし人体に危険のないマイクロレーザとすべきである。
この実施例で4a、4bを細長い1対の反射鏡としたが、細長い鏡を精度よく仕上げるのは困難な場合には、必要な個所だけの小さい反射鏡を複数枚配置するようにしてもよい。
If laser light is used as the light source, the beam reaches the light receiver with almost no spread of the light beam, which is convenient because the sensitivity is kept good. However, it should be a microlaser that is not dangerous to the human body.
In this embodiment, a pair of elongated reflectors 4a and 4b is used. However, if it is difficult to finish the elongated mirror with high accuracy, a plurality of small reflectors only at necessary portions may be arranged. .

投光機以下の検出装置は、建物側に設置しても機能的には変わらないが、建物の階数だけ検出装置が必要である。図示したようにかご側に設置すれば、1基のエレベータに対して1組でよい。   The detectors below the projector do not change in function even if they are installed on the building side, but the detectors are required for the number of floors of the building. If it is installed on the car side as shown in the figure, one set is enough for one elevator.

第2の実施例の反射鏡部分を図4により説明する。第1の実施例では反射鏡は平面で、ビームの入射角によって反射位置をずらしているが、第2の実施例では反射鏡は水平面に対して45度傾斜した1対のものをユニットとして使用する。入射角は水平方向である。入射ビームに対して鏡の間隔であるhだけ高い位置から反射される。ビームの経路に筒体41を設けると鏡面の汚れを防止できる。   The reflecting mirror portion of the second embodiment will be described with reference to FIG. In the first embodiment, the reflecting mirror is a plane, and the reflection position is shifted depending on the incident angle of the beam. In the second embodiment, a pair of reflecting mirrors inclined at 45 degrees with respect to the horizontal plane is used as a unit. To do. The incident angle is in the horizontal direction. Reflected from a position higher by h which is the distance of the mirror relative to the incident beam. When the cylindrical body 41 is provided in the beam path, the mirror surface can be prevented from being soiled.

以上2つの実施例について、エレベータと建物の例で説明したが、鉄道車両とホームドアの例に置き換えても全く同じである。この場合はかごが鉄道車両、建物がプラットホームに相当するが、投光機以下の検出装置はホームドア側に設置するのが順当である。
以上、水平方向に検知する例で説明したが、反射鏡を水平方向とし、縦方向の検知を行うこともできるし、斜め方向など、任意の方向に検知を行うこともできる。
Although the two embodiments have been described with respect to the example of the elevator and the building, the same can be said even if the example is replaced with the example of the railway vehicle and the platform door. In this case, the car corresponds to the railway vehicle and the building corresponds to the platform. However, it is proper to install the detection device below the projector on the platform door side.
As described above, the example in which the detection is performed in the horizontal direction has been described. However, the reflection mirror can be set in the horizontal direction, and the detection in the vertical direction can be performed, or the detection can be performed in an arbitrary direction such as an oblique direction.

第1の実施例の障害物検出装置を示すエレベータかごの正面図である。It is a front view of the elevator car which shows the obstacle detection apparatus of a 1st Example. 第1の実施例の障害物検出装置を示すエレベータかご周辺の平面図である。It is a top view of the elevator car periphery which shows the obstruction detection apparatus of a 1st Example. 図1におけるビームの経路を示す正面図である。It is a front view which shows the path | route of the beam in FIG. 第2の実施例の反射鏡部分を示す部分正面図である。It is a partial front view which shows the reflective-mirror part of a 2nd Example. 本発明に係わる公知の多重反射形光電式エリアセンサの正面図である。It is a front view of the well-known multiple reflection type photoelectric area sensor concerning this invention. 図5におけるガイド部分を示す部分正面図である。It is a partial front view which shows the guide part in FIG.

符号の説明Explanation of symbols

1 投光器
2 受光器
3、3a、3b ガイド
4、4a、4b 反射鏡(ユニット)
5 かご
6 建物
41 筒体
51a、51b (かごの)扉
52 ロープ
61a、61b (建物の)扉
1 Light Emitter 2 Light Receiver 3, 3a, 3b Guide 4, 4a, 4b Reflector (Unit)
5 Car 6 Building 41 Tube 51a, 51b (Cage) door 52 Rope 61a, 61b (Building) door

Claims (4)

二重扉(51a、51b、61a、61b)の中間位置の開口部両側に配置した1対の反射鏡(4a、4b)と、一方の反射鏡(4a)の一方の端部に設けた投光器(1)と、他方の反射鏡(4b)の前記端部とは反対側の端部に設けた受光器(2)とから構成され、前記反射鏡(4a、4b)が、入射したビームを反対側の反射鏡に位置をずらして反射するように設定されており、前記投光器(1)と前記受光器(2)との間で複数回の反射が行われることを特徴とする二重扉における障害物検出装置。   A pair of reflecting mirrors (4a, 4b) disposed on both sides of the opening at an intermediate position of the double door (51a, 51b, 61a, 61b) and a projector provided at one end of one reflecting mirror (4a) (1) and a light receiver (2) provided at the end opposite to the end of the other reflecting mirror (4b), and the reflecting mirror (4a, 4b) A double door which is set so as to be reflected at a position opposite to the reflecting mirror on the opposite side, and is reflected a plurality of times between the light projector (1) and the light receiver (2). Obstacle detection device. 前記投光器(1)と受光器(2)が使用しているビームの光源がレーザ光である請求項1に記載の二重扉における障害物検出装置。   The obstacle detection device for a double door according to claim 1, wherein the light source of the beam used by the light projector (1) and the light receiver (2) is a laser beam. 前記二重扉がエレベータのかごの扉と建物の扉である請求項1または2に記載の二重扉における障害物検出装置。   The obstacle detection device for a double door according to claim 1 or 2, wherein the double door is an elevator car door and a building door. 前記二重扉(51a、51b、61a、61b)が鉄道車両の側扉とプラットホームのホームドアである請求項1または2に記載の二重扉における障害物検出装置。   The obstacle detection device for a double door according to claim 1 or 2, wherein the double door (51a, 51b, 61a, 61b) is a side door of a railway vehicle and a platform door of a platform.
JP2007176986A 2007-07-05 2007-07-05 Obstacle detection device in double door Pending JP2009012940A (en)

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CN114475667A (en) * 2022-02-07 2022-05-13 中铁大桥勘测设计院集团有限公司武汉分公司 Anti-pinch system of railway riding safety shielding door

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110963391A (en) * 2019-12-23 2020-04-07 华南理工大学 Novel chimney effect resistant intelligent induction door system for high-rise building and control method
CN110963391B (en) * 2019-12-23 2023-12-05 华南理工大学 Novel chimney effect-resistant intelligent sensing door system for high-rise building and control method
WO2021240595A1 (en) * 2020-05-25 2021-12-02 三菱電機株式会社 Elevator door safety apparatus
JPWO2021240595A1 (en) * 2020-05-25 2021-12-02
CN114475667A (en) * 2022-02-07 2022-05-13 中铁大桥勘测设计院集团有限公司武汉分公司 Anti-pinch system of railway riding safety shielding door

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