JP2004220379A - Opening/closing detector and antitheft device using opening/closing detector - Google Patents

Opening/closing detector and antitheft device using opening/closing detector Download PDF

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Publication number
JP2004220379A
JP2004220379A JP2003007693A JP2003007693A JP2004220379A JP 2004220379 A JP2004220379 A JP 2004220379A JP 2003007693 A JP2003007693 A JP 2003007693A JP 2003007693 A JP2003007693 A JP 2003007693A JP 2004220379 A JP2004220379 A JP 2004220379A
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Japan
Prior art keywords
door
light
light receiving
light emitting
open
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JP2003007693A
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Japanese (ja)
Inventor
Noboru Okada
昇 岡田
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Nippon Chemi Con Corp
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Nippon Chemi Con Corp
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Priority to JP2003007693A priority Critical patent/JP2004220379A/en
Publication of JP2004220379A publication Critical patent/JP2004220379A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an antitheft device with high accuracy and security. <P>SOLUTION: A photosensor having at least a light projection system on one side, and a light reception system receiving output from the light projection system on the other side is disposed such that the light projection system faces the light reception system through a door. The light reception system detects whether the output from the light projection system is present or not, to detect an opening/closing state of the door. Thereby, the opening/closing state of the door can be certainly recognized. When the door is opened, an alarm device is operated to give an alarm, so that reliability of security is drastically improved. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、扉の開閉状態を検知する扉用開閉検知装置、及び扉用開閉検知装置の検知結果に基づき警報報知する盗難防止装置に関する。
【0002】
【従来の技術】
近年、扉や窓などが開かれたことを検知して発報する警報装置が使用されるようになってきている。
【0003】
ところで、扉の開閉情報を得るには、扉の開閉状態を何等かの手段で検知し、これを信号の形にする必要がある。この扉や窓の開閉検知装置としては、扉と扉枠のいずれか一方にリードスイッチおよび他方に磁石を配置して扉の開閉によりリードスイッチが作動して扉の開閉状態を検知する磁気を使用する磁気センサ方式(特許文献1および特許文献2)や、また発光素子から放射された光を受光素子に入射させることにより扉の開閉状態を検知する光センサ方式があり、この光センサ方式には扉および扉枠に発光素子と受光素子を対向するよう配置したものや(特許文献3)、扉および扉枠のいずれか一方側に発光素子と受光素子とからなる検知手段を配置するとともに他方に平坦な反射板を配置し、発光素子から放射された光を反射板で反射させて受光素子に入射させるもの(特許文献4)が考えられている。
【0004】
【特許文献1】
実開昭55−134687号公報
【0005】
【特許文献2】
特開平02−170298号公報
【0006】
【特許文献3】
特開昭60−235297号公報
【0007】
【特許文献4】
実開平06−36177号公報
【0008】
【発明が解決しようとする課題】
しかしながら、このような従来の開閉検知装置にあっては次のような問題があった。すなわち、リードスイッチと磁石との組合せで代表される磁気センサ方式を採用したものにあっては、振動によって誤動作したり、磁気の強弱によって動作範囲が異なったりするなどの問題があった。防犯用の扉用開閉検知装置としては、場合によっては別の磁石をリードスイッチに近づけることで、扉を開くことができセキュリティーの信頼性に欠ける問題があった。
【0009】
また、光センサ方式として、扉および扉枠に発光素子と受光素子を対向するよう配置した光センサでは、扉の開く方向への移動距離に基づいて受光系が受光する出力の変化を検知して扉の開閉状態を判断するため、この移動距離での出力の変化を検知するのは難しく、誤作動を生じる場合がある。また、この光センサを扉の室外側に配置した場合には、発光素子と受光素子との隙間より別の発光素子を近づけることで、受光素子が光を検知した状態にして扉を開くことができセキュリティーの信頼性に欠ける問題が生じ、また扉の室内側に光センサを配置した場合では、警報が室外側に聞こえづらいため、警報器を室外側に向けて別途配置しなければならず、コンパクト化出来ない。また、扉および扉枠のいずれか一方に発光素子と受光素子とからなる検知手段を配置するとともに他方に平坦な反射板を配置し、発光素子から放射された光を反射板で反射させて受光素子に入射させることによって扉の閉状態を検知するようにしている光センサ方式を採用したものにあっては、反射板の角度の制御が厳しく、扉の開閉による反射板の形状の変化により反射角度が変わり、光センサが誤作動してしまう問題がある。
【0010】
また、磁気センサや光センサを扉と扉枠に配置すると、スライド扉などの複数枚の扉では扉ごとにセンサを配置しなければならず、設置の作業性が悪くなり、コストも上がってしまう。
【0011】
そこで本発明は、誤動作の発生を防止でき、かつセキュリティーの信頼性に富んだ開閉検知装置および該開閉検知装置を備えた盗難防止装置を提供することを目的としている。
【0012】
【課題を解決するための手段】
上記目的を達成するために、本発明に係る開閉検知装置は、少なくとも投光系を備えた光センサと、前記投光系からの出力を受光する受光系を備えた光センサを、扉を介在して前記投光系と受光系が対向するように配置し、投光系からの出力の有無を受光系が検知して扉の開閉を検知している。また前記光センサは、ともに投光系と受光系を備え、互いの投光系と受光系が対向するように配置されている。
【0013】
また、光センサは、前記光センサは、少なくとも一方が扉に取り付けられている。つまり光センサは、扉と扉枠に取り付けられたり、扉と対の扉とに取り付けられて投光系と受光系が対向するように配置されている。
【0014】
また、前記対向した投光系と受光系に介在する扉の介在部分が投光系からの出力を透過する素材、または空間から構成されている。
【0015】
さらに、前記開閉検地装置は、投光系からの出力を受光系が検知出来なかった際に、発報する警報手段を備えている。
【0016】
投光系を備えた光センサと受光系を備えた光センサを扉を間に介して光センサの投光系と受光系を対向するよう配置することで、該光センサ間の隙間から別の投光系を近づけることが出来なくなり、セキュリティーが向上し、また扉が開かれた際には投光系からの出力方向が受光系からずれるため、確実に扉の開放を検知することができる。また、扉を間に介在して対向するように配置されているため、例えば複数枚からなるスライド扉などの扉の重なり部に光センサーを対向するよう配置すれば、一対の光センサにて扉2枚の開閉状態を同時に監視でき、コストが低減されるとともに利便性を高めることができる。扉を間に介在すればよく、光センサの取り付けは扉と扉枠、扉と扉など扉の状況に応じて様々な取り付け形態を用いることができ汎用性がある。また、対向するよう配置されている光センサはともに投光系と受光系を備えることで、さらにセキュリティーの信頼性を高められる。特に警報手段を、受光系を備えた一方の光センサにのみ備えた場合は、この警報手段が侵入者によって破壊されると、扉の開閉状態は検知可能であっても盗難防止として信頼性は低くなるが、光センサがともに投光系と受光系および警報手段を備えることで、一方が破壊されても他方の光センサが発報するため、セキュリティーを大幅に高めることが出来る。
【0017】
【実施例】
以下、図面を参照しながら本発明の実施例を説明する。
【0018】
図1は本発明に係る実施例1の扉開閉検知装置を備えた盗難防止装置をスライド扉に配置した断面図である。図2は実施例1のスライド扉を開いた外観図を示す。図3は本発明に係る実施例2の断面図を示す。図4は本発明に係る実施例3の断面図を示す。
(実施例1)
実施例1の盗難防止装置は、図1に示すように、光センサの投光系として発光素子5、受光系として受光素子6を互いに対向するように、扉を間に介在して配置される。前記発光素子5は発信機1に、受光素子6は受信機2に設置されている。そして、受信機2には受光素子6が発光素子5からの出力を受光できなかった際に発報する警報手段が設けられている。また、受信機2には警戒状態を表示する表示部8やリモコンなどの外部からの警戒状態の設定、解除指令を受信する受信部9が設けられている。
【0019】
扉はスライド式や開き戸式の扉が用いられ、赤外線などの光を透過する材質、ガラスや透明な樹脂などからなり、また赤外線を透過しない材質からなる場合、例えば木材などからなる場合は、扉における対向するように配置された発光素子と受光素子の間の介在部分を前述の赤外線などの光を透過する材質で形成し、また貫通孔を設け空間部を形成し、発光素子からの出力を受光素子が受光できるように構成している。なお、扉の一部のみ発光素子からの出力を受光素子が受光できるように構成すると、扉が開かれた場合には他の透過しない部分が発光素子からの出力を確実に遮断するため更に確実に開放状態を検知できる。そして扉は商品陳列用の小型のショーケースや、出入り口用などの大型の扉などに用いられる。実施例1では図1に示すように、扉は複数からなるスライド扉を用い、この複数のスライド扉3の重なり部4を介在して発光素子5と受光素子6が対向するように取り付けられている。つまり、スライド扉3の一方の扉には発光素子5を備えた発信機1を取り付け、他方の扉には受光素子6を備えた受信機2を取り付け、発光素子5と受光素子6をスライド扉3の重なり部4を間に介在して対向するように配置されている。発光素子5と受光素子6は扉の重なり部上方、下方などスライド扉3の重なり部内であれば任意の位置に配置でき、発信機1及び受信機2の一部は、例えば扉への取り付け部分が扉の重なり部内でなくてもよい。
【0020】
発信機1は、発光素子5としてパルス信号を発する発光ダイオードと、発光ダイオードを点灯させるための駆動回路および電源から構成される。受信機2は受光系として前記発光ダイオードからパルス信号を受光する受光素子6と、リモコンからの警戒状態の設定、解除のパルス信号を受信する受信部9と、前記受光素子6およびリモコンからのパルス信号を処理する信号処理部と、信号処理部の指示により発光ダイオードを点灯させる表示部8と、前記信号処理部の指示により発報する警報器7とから構成されている。
【0021】
上述のように構成される盗難防止装置は、次のようにしてスライド扉3の開閉状態を識別し、警報器7の作動を制御している。スライド扉3が閉まっている場合は、発信機1の発光ダイオードと受信機2の受光素子6がスライド扉3の重なり部4を介して互いに対向するよう配置されており、発光ダイオードからのパルス信号を受光素子6は受光しており、このパルス信号の受光を信号処理部が認識して、つまりパルス信号受光=スライド扉3は閉まっている状態と判断する。これにより信号処理部から表示部8に指令が発せられ、表示部8の発光ダイオードを点灯させる。つまり信号処理部は発光ダイオードを点灯させることで、スライド扉3が閉まっていることを表示している。そして信号処理部はパルス信号受光と認識した際には警報器7には指令を発さない設定となっている。
【0022】
次にスライド扉3が図2の矢印の方向に開かれた場合は、発光ダイオードと受光素子6との対向位置がずれるため、受光素子6に受光される発光ダイオードからのパルス信号は受光されず、このパルス信号受光無しを認識して、つまりパルス信号受光無し=スライド扉3は開かれている状態と判断する。これにより信号処理部から表示部8に指令が発せられ、表示部8の発光ダイオードを点滅させる。つまり信号処理部は発光ダイオードを点滅させることで、スライド扉3が開いていることを表示している。同時に信号処理部から警報器7に指令が発せられ、警報器7を作動させて発報を行う。なお、スライド扉の他方側が開かれた場合も同様である。
【0023】
次に上述の開閉検知による警戒体制の設定方法について説明する。まず、発信機1の発光ダイオードから発信されるパルス信号は図示しない発信機1のスイッチを入れることで常時onとなる。この状態で一旦スライド扉3が閉まり、発信機1の発光ダイオードと受信機2の受光素子6が対向状態となり、受光素子6が発光ダイオードからのパルス信号を受光し、信号処理部がスライド扉3の閉状態を認識するとスライド扉3の警戒体制が始まる。つぎにこの警戒体制の解除方法として、リモコンなどの外部からの信号により解除される。このリモコンは警戒解除用のセットボタンを有し、ボタンを押すことにより、解除用の信号を発信させる発信部を備えている。このリモコンからの解除用の信号を受信機2に設けられた受信部9が受信すると、信号処理部は警戒の解除指令と判断し、信号処理部は警戒解除の指令を発し、前記受光素子6は受光せず、信号処理部は開閉状態を判断しない無警戒状態となる。なお、警戒状態では表示部8の発光ダイオードは点灯又は点滅しており、警戒解除された状態では表示部8の発光ダイオードは消灯される設定としているが、任意に変更できる。
【0024】
なお、本発明の実施例として盗難防止装置として説明してきたが、警報器7をはずして扉の開閉検知装置としてもよい。また、実施例として投光系の出力としてパルス信号を用いて説明したが、パルス信号に代えて赤外線を放射し、信号処理部はこの赤外線の受光量の変化を認識してスライド扉の開閉状態を検知する構成であってもよい。
【0025】
(実施例2)
次に本発明の実施例2として、図3に示すように、スライド扉3の重なり部4に光センサとして発光素子5と受光素子6を備えた受発信機10と同じく光センサとして投光系と受光系を備えた受発信機10を、受発信機10の互いの投光系と受光系を対向するように配置することもできる。そして各々の受発信機10には警報器7がそれぞれ設けられ、各受光素子6はスライド扉3の開閉状態をそれぞれ検知しているため、検知精度は向上し、また一方の受光素子6に対向する発光素子からの出力が受光されないと警報器7が作動するためセキュリティーの信頼性を高められる。
【0026】
(実施例3)
実施例1及び実施例2では複数枚からなるスライド扉の重なり部4を間に介在して投光系と受光系を対向するように配置されたもの用いたが、本発明の実施例3では図4に示すように、扉の介在部分がスライド扉などの重なり部ではないものとして、扉枠11とスライド扉3とに開閉検知装置を取り付けたものを説明する。扉枠側に発信機1をスライド扉側に受信機2を両面テープなどで取り付けられ、発信機1が有する発光素子5と受信機2が有する受光素子6が、スライド扉3における閉状態での扉枠との近傍付近を間に介在して対向するよう配置されている。発信機1はその発光素子5がスライド扉表面に露出するように扉枠11に取り付け、該発光素子5に受光素子6が対向するように受信機2をスライド扉3に取り付けている。なお、発信機をスライド扉に受信機を扉枠に取り付けてもよい。なお、前記扉枠11に代えてスライド扉を用いた場合も同様である。つまり同軸上にある複数のスライド扉では、一方の扉に発光素子を備えた発信機を、他方の扉に受光素子を備えた受信機を各スライド扉間の合わせ部付近に取り付け、発信機の発光素子に対向する位置まで受信機を延長し、この対向する位置に受光素子を配置している。このようにすれば、一方の扉が開かれると発光素子と受光素子がずれるため、複数扉を一対の光センサで容易にその開閉状態を監視できる。
【0027】
【発明の効果】
以上のように、本発明によれば、投光系を備えた光センサと受光系を備えた光センサを扉を間に介して光センサの投光系と受光系を対向するよう配置することで、該光センサ間の隙間から別の投光系を近づけることが出来なくなり、セキュリティーが向上し、また扉が開かれた際には投光系からの出力方向が受光系からずれるため、確実に扉の開放を検知することができる。また、扉を間に介在して対向するように配置されているため、例えば複数枚からなるスライド扉などの扉の重なり部に光センサーを対向するよう配置すれば、一対の光センサにて扉2枚の開閉状態を同時に監視でき、コストが低減されるとともに利便性を高めることができる。
【図面の簡単な説明】
【図1】本発明に係る実施例1の扉開閉検知装置を備えた盗難防止装置をスライド扉に配置した断面図である。
【図2】実施例1におけるスライド扉を開いた外観図である。
【図3】本発明に係る実施例2の扉開閉検知装置を備えた盗難防止装置をスライド扉に配置した断面図である。
【図4】本発明に係る実施例3の扉開閉検知装置を備えた盗難防止装置を扉枠とスライド扉に配置した断面図を示す。
【符号の説明】
1 発信機
2 受信機
3 スライド扉
4 重なり部
5 発光素子
6 受光素子
7 警報器
8 表示部
9 リモコン受信部
10 受発信機
11 扉枠
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a door open / close detection device that detects an open / closed state of a door, and a theft prevention device that issues an alarm based on a detection result of the door open / close detection device.
[0002]
[Prior art]
2. Description of the Related Art In recent years, an alarm device that detects that a door or a window is opened and issues an alarm is used.
[0003]
By the way, in order to obtain door opening / closing information, it is necessary to detect the door opening / closing state by some means and to make this into a signal form. The door / window opening / closing detection device uses a magnet that arranges a reed switch on either the door or the door frame and a magnet on the other, and activates the reed switch when the door is opened / closed to detect the open / closed state of the door. There is a magnetic sensor system (Patent Document 1 and Patent Document 2), and an optical sensor system that detects the open / close state of a door by making light emitted from a light emitting element incident on a light receiving element. A light-emitting element and a light-receiving element are arranged on a door and a door frame so as to face each other (Patent Document 3), and a detecting means including a light-emitting element and a light-receiving element is arranged on one side of a door and a door frame and the other is provided on the other side. There has been proposed a technology in which a flat reflecting plate is arranged, and light emitted from a light emitting element is reflected by the reflecting plate and is incident on a light receiving element (Patent Document 4).
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 55-134687
[Patent Document 2]
JP-A-02-170298 [0006]
[Patent Document 3]
JP-A-60-235297
[Patent Document 4]
Japanese Utility Model Laid-Open No. 06-36177 [0008]
[Problems to be solved by the invention]
However, such a conventional open / close detection device has the following problems. That is, in the case of employing the magnetic sensor system represented by the combination of the reed switch and the magnet, there are problems such as a malfunction due to vibration, and a different operation range due to the strength of magnetism. As a security door open / close detection device, there is a problem that the door can be opened by bringing another magnet close to the reed switch in some cases, and the security is not reliable.
[0009]
Further, as an optical sensor system, an optical sensor in which a light emitting element and a light receiving element are arranged on a door and a door frame so as to face each other detects a change in output received by a light receiving system based on a moving distance in a direction in which the door opens. In order to determine the open / closed state of the door, it is difficult to detect a change in output at this moving distance, and a malfunction may occur. When the light sensor is arranged outside the door, the door can be opened in a state where the light receiving element detects light by bringing another light emitting element closer to the gap between the light emitting element and the light receiving element. When the light sensor is placed inside the door indoors, it is difficult for the alarm to be heard outside, so the alarm must be placed separately facing the outside. Cannot be made compact. In addition, a detector comprising a light emitting element and a light receiving element is disposed on one of the door and the door frame, and a flat reflector is disposed on the other, and light emitted from the light emitting element is reflected by the reflector to receive light. In the case of an optical sensor system that detects the closed state of the door by making it incident on the element, the angle of the reflector is strictly controlled, and the reflection is caused by the change in the shape of the reflector due to the opening and closing of the door. There is a problem that the angle changes and the optical sensor malfunctions.
[0010]
In addition, when a magnetic sensor or an optical sensor is disposed on a door and a door frame, a sensor must be disposed for each door in a plurality of doors such as a sliding door, and the workability of the installation deteriorates, and the cost increases. .
[0011]
Therefore, an object of the present invention is to provide an open / close detection device which can prevent malfunction from occurring and has high security reliability, and an anti-theft device provided with the open / close detection device.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, an opening / closing detection device according to the present invention includes an optical sensor having at least a light projecting system, and an optical sensor having a light receiving system that receives an output from the light projecting system, with a door interposed therebetween. The light projecting system and the light receiving system are arranged so as to face each other, and the light receiving system detects the presence or absence of an output from the light projecting system to detect the opening and closing of the door. The optical sensors both include a light projecting system and a light receiving system, and are arranged so that the light projecting system and the light receiving system face each other.
[0013]
In the optical sensor, at least one of the optical sensors is attached to a door. That is, the optical sensor is attached to a door and a door frame, or attached to a door and a pair of doors, and is arranged so that the light projecting system and the light receiving system face each other.
[0014]
Further, an interposed portion of the door interposed between the opposed light projecting system and the light receiving system is made of a material or space through which an output from the light projecting system is transmitted.
[0015]
Further, the open / close detection device includes an alarm unit that issues an alarm when the light receiving system cannot detect the output from the light projecting system.
[0016]
By arranging the light sensor with the light projecting system and the light sensor with the light receiving system so that the light projecting system and the light receiving system of the light sensor face each other with a door in between, another When the door is opened, the output direction from the light emitting system is shifted from the light receiving system, so that the opening of the door can be reliably detected. Further, since the doors are arranged to face each other with the door interposed therebetween, for example, if the optical sensors are arranged so as to face the overlapping portion of the doors such as a plurality of sliding doors, the doors are paired with the pair of optical sensors. The open / close state of the two sheets can be monitored at the same time, so that cost can be reduced and convenience can be improved. A door may be interposed therebetween, and the optical sensor can be mounted in various manners depending on the condition of the door, such as a door and a door frame, a door and a door, and has versatility. In addition, the reliability of security can be further enhanced by providing the light sensors arranged so as to face each other with the light projecting system and the light receiving system. In particular, in the case where the alarm means is provided only on one of the optical sensors having the light receiving system, if the alarm means is destroyed by an intruder, the open / closed state of the door can be detected, but the reliability is reduced as theft prevention. Although it is lower, the security can be greatly increased because the optical sensor is provided with the light projecting system, the light receiving system, and the alarm means, and even if one of the optical sensors is destroyed, the other optical sensor issues an alarm.
[0017]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0018]
FIG. 1 is a cross-sectional view in which an anti-theft device including a door open / close detection device according to a first embodiment of the present invention is disposed on a sliding door. FIG. 2 is an external view in which the sliding door of the first embodiment is opened. FIG. 3 shows a sectional view of Embodiment 2 according to the present invention. FIG. 4 shows a sectional view of Embodiment 3 according to the present invention.
(Example 1)
As shown in FIG. 1, the anti-theft device of the first embodiment is arranged with a door interposed therebetween such that a light emitting element 5 as a light emitting system and a light receiving element 6 as a light receiving system of the optical sensor face each other. . The light emitting element 5 is installed in the transmitter 1 and the light receiving element 6 is installed in the receiver 2. The receiver 2 is provided with an alarm unit that issues an alarm when the light receiving element 6 cannot receive the output from the light emitting element 5. In addition, the receiver 2 is provided with a display unit 8 for displaying the alert state and a receiving unit 9 for receiving an external alert state setting / release command such as a remote controller.
[0019]
The door is a sliding or hinged door, and is made of a material that transmits light such as infrared rays, such as glass or transparent resin.If the door is made of a material that does not transmit infrared rays, such as wood, the door is used. The intervening portion between the light emitting element and the light receiving element which are arranged so as to face each other is formed of the above-described material that transmits light such as infrared rays, and a through hole is provided to form a space, and the output from the light emitting element is formed. The light receiving element is configured to receive light. In addition, if the light receiving element can receive the output from the light emitting element only in part of the door, if the door is opened, other non-transmitting parts will surely shut off the output from the light emitting element, so that it is more reliable. Can detect the open state. The door is used for a small showcase for displaying goods, a large door for an entrance, and the like. In the first embodiment, as shown in FIG. 1, a plurality of sliding doors are used as the doors, and the light emitting element 5 and the light receiving element 6 are mounted so as to face each other with the overlapping portion 4 of the plurality of sliding doors 3 interposed therebetween. I have. That is, the transmitter 1 having the light emitting element 5 is attached to one of the sliding doors 3, the receiver 2 having the light receiving element 6 is attached to the other door, and the light emitting element 5 and the light receiving element 6 are connected to the sliding door. 3 are arranged so as to face each other with an overlapping portion 4 interposed therebetween. The light emitting element 5 and the light receiving element 6 can be arranged at any position within the overlapping portion of the sliding door 3, such as above and below the overlapping portion of the door, and a part of the transmitter 1 and the receiver 2 is attached to the door, for example. May not be inside the overlapping portion of the door.
[0020]
The transmitter 1 includes a light emitting diode that emits a pulse signal as the light emitting element 5, a driving circuit for lighting the light emitting diode, and a power supply. The receiver 2 includes, as a light receiving system, a light receiving element 6 for receiving a pulse signal from the light emitting diode, a receiving unit 9 for receiving a pulse signal for setting and canceling an alert state from a remote controller, and a pulse from the light receiving element 6 and a remote controller. It comprises a signal processing section for processing a signal, a display section 8 for turning on a light emitting diode according to an instruction from the signal processing section, and an alarm device 7 for issuing an alarm according to an instruction from the signal processing section.
[0021]
The anti-theft device configured as described above identifies the open / closed state of the slide door 3 and controls the operation of the alarm 7 as follows. When the sliding door 3 is closed, the light emitting diode of the transmitter 1 and the light receiving element 6 of the receiver 2 are arranged so as to face each other via the overlapping portion 4 of the sliding door 3, and a pulse signal from the light emitting diode is provided. Is received by the light receiving element 6, and the signal processing unit recognizes the reception of the pulse signal, that is, determines that the pulse signal reception = slide door 3 is closed. As a result, a command is issued from the signal processing unit to the display unit 8, and the light emitting diode of the display unit 8 is turned on. That is, the signal processing unit turns on the light emitting diode to indicate that the slide door 3 is closed. The signal processing unit is set so as not to issue a command to the alarm device 7 when recognizing the reception of the pulse signal.
[0022]
Next, when the sliding door 3 is opened in the direction of the arrow in FIG. 2, the facing position of the light emitting diode and the light receiving element 6 is shifted, so that the pulse signal from the light emitting diode received by the light receiving element 6 is not received. Recognizing that no pulse signal has been received, that is, no pulse signal has been received, it is determined that the slide door 3 is open. As a result, a command is issued from the signal processing unit to the display unit 8 to cause the light emitting diode of the display unit 8 to blink. That is, the signal processing unit blinks the light emitting diode to indicate that the slide door 3 is open. At the same time, a command is issued from the signal processing unit to the alarm device 7, and the alarm device 7 is activated to issue an alarm. The same applies when the other side of the sliding door is opened.
[0023]
Next, a method of setting a security system based on the above-described opening / closing detection will be described. First, the pulse signal transmitted from the light emitting diode of the transmitter 1 is always turned on by turning on the switch of the transmitter 1 not shown. In this state, the slide door 3 is once closed, and the light emitting diode of the transmitter 1 and the light receiving element 6 of the receiver 2 face each other, the light receiving element 6 receives a pulse signal from the light emitting diode, and the signal processing unit operates the slide door 3. When the closed state of the slide door 3 is recognized, the security system for the slide door 3 starts. Next, as a method of canceling the alert system, the alert system is canceled by an external signal such as a remote controller. This remote control has a warning release set button, and includes a transmitting unit that transmits a release signal by pressing the button. When the receiving unit 9 provided in the receiver 2 receives the release signal from the remote controller, the signal processing unit determines that the warning is to be released, the signal processing unit issues a warning release command, and the light receiving element 6 is released. Does not receive light, and the signal processing unit is in an alarmless state in which the open / closed state is not determined. In the alert state, the light emitting diode of the display unit 8 is turned on or blinking, and when the alert state is released, the light emitting diode of the display unit 8 is set to be turned off. However, it can be arbitrarily changed.
[0024]
Although the anti-theft device has been described as an embodiment of the present invention, the alarm 7 may be removed to provide a door open / close detection device. Also, although the embodiment has been described using a pulse signal as the output of the light projecting system, an infrared ray is emitted instead of the pulse signal, and the signal processing unit recognizes a change in the amount of received infrared light and opens and closes the slide door. May be detected.
[0025]
(Example 2)
Next, as a second embodiment of the present invention, as shown in FIG. 3, a light emitting system as an optical sensor as in the receiver / transmitter 10 having the light emitting element 5 and the light receiving element 6 as the optical sensor in the overlapping portion 4 of the slide door 3. The light receiving / transmitting device 10 provided with the light receiving / transmitting system may be arranged so that the light transmitting system and the light receiving system of the receiving / transmitting device 10 face each other. Each of the transmitter / receivers 10 is provided with an alarm 7, and each light receiving element 6 detects the open / closed state of the slide door 3, so that the detection accuracy is improved and the light receiving element 6 faces one of the light receiving elements 6. If the output from the light emitting element is not received, the alarm 7 is activated, so that security reliability can be improved.
[0026]
(Example 3)
In the first and second embodiments, the light emitting system and the light receiving system are arranged so as to oppose each other with the overlapping portion 4 of a plurality of sliding doors interposed therebetween, but in the third embodiment of the present invention. As shown in FIG. 4, a case where an opening / closing detection device is attached to the door frame 11 and the sliding door 3 will be described assuming that the intervening portion of the door is not an overlapping portion such as a sliding door. The transmitter 1 is attached to the door frame side, the receiver 2 is attached to the sliding door side with double-sided tape or the like, and the light emitting element 5 of the transmitter 1 and the light receiving element 6 of the receiver 2 are closed in the sliding door 3. It is arranged so as to be opposed to the vicinity of the door frame in the vicinity. The transmitter 1 is attached to the door frame 11 so that the light emitting element 5 is exposed on the surface of the sliding door, and the receiver 2 is attached to the sliding door 3 so that the light receiving element 6 faces the light emitting element 5. In addition, you may attach a transmitter to a sliding door and a receiver to a door frame. The same applies when a sliding door is used instead of the door frame 11. In other words, for a plurality of slide doors on the same axis, a transmitter with a light emitting element on one door and a receiver with a light receiving element on the other door are attached near the joint between the slide doors, and the The receiver is extended to a position facing the light emitting element, and the light receiving element is arranged at the position facing the light emitting element. According to this configuration, when one of the doors is opened, the light emitting element and the light receiving element are displaced, so that the open / closed state of the plurality of doors can be easily monitored by the pair of optical sensors.
[0027]
【The invention's effect】
As described above, according to the present invention, the light sensor having the light projecting system and the light sensor having the light receiving system are arranged so that the light projecting system and the light receiving system of the light sensor face each other with the door interposed therebetween. Therefore, it is not possible to approach another light projecting system from the gap between the optical sensors, thereby improving security, and when the door is opened, the output direction from the light projecting system is shifted from the light receiving system, so that The opening of the door can be detected. Further, since the doors are arranged to face each other with the door interposed therebetween, for example, if the optical sensors are arranged so as to face the overlapping portion of the doors such as a plurality of sliding doors, the doors are paired with the pair of optical sensors. The open / close state of the two sheets can be monitored at the same time, so that cost can be reduced and convenience can be improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view in which an anti-theft device including a door opening / closing detection device according to a first embodiment of the present invention is disposed on a sliding door.
FIG. 2 is an external view of a first embodiment with a sliding door opened.
FIG. 3 is a cross-sectional view in which an anti-theft device including a door opening / closing detection device according to a second embodiment of the present invention is disposed on a sliding door.
FIG. 4 is a cross-sectional view in which an anti-theft device including a door opening / closing detection device according to a third embodiment of the present invention is disposed on a door frame and a sliding door.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Transmitter 2 Receiver 3 Sliding door 4 Overlap part 5 Light emitting element 6 Light receiving element 7 Alarm 8 Display part 9 Remote control receiving part 10 Receiver / transmitter 11 Door frame

Claims (5)

少なくとも投光系を備えた光センサと、前記投光系からの出力を受光する受光系を備えた光センサを、扉を介在して該投光系と受光系が対向するように配置し、投光系からの出力の有無を受光系が検知して扉の開閉を検知する開閉検知装置。An optical sensor having at least a light projecting system and an optical sensor having a light receiving system for receiving an output from the light projecting system are arranged so that the light projecting system and the light receiving system face each other via a door, An open / close detector that detects whether a door is open or closed by detecting the presence or absence of output from the light emitting system with the light receiving system. 前記光センサは、ともに投光系と受光系を備え、互いの投光系と受光系が対向するように配置されている請求項1記載の開閉検知装置。The open / close detection device according to claim 1, wherein the optical sensors both include a light projecting system and a light receiving system, and are arranged so that the light projecting system and the light receiving system face each other. 前記光センサは、少なくとも一方が扉に取り付けられている請求項1又は2に記載の開閉検知装置。The open / close detection device according to claim 1, wherein at least one of the optical sensors is attached to a door. 前記対向した投光系と受光系に介在する扉の介在部分が投光系からの出力を透過する素材、または空間から構成されている請求項1乃至3のいずれかに記載の開閉検知装置。The open / close detection device according to any one of claims 1 to 3, wherein an interposed portion of the door interposed between the opposed light projecting system and the light receiving system is made of a material or a space that transmits an output from the light projecting system. 前記投光系からの出力を受光系が検知出来なかった際に、発報する警報手段を備えた請求項1乃至4のいずれかに記載の開閉検知装置を備えた盗難防止装置。An anti-theft device comprising the opening / closing detection device according to any one of claims 1 to 4, further comprising an alarm unit that issues an alarm when the light receiving system cannot detect an output from the light projecting system.
JP2003007693A 2003-01-15 2003-01-15 Opening/closing detector and antitheft device using opening/closing detector Pending JP2004220379A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106056818A (en) * 2016-08-04 2016-10-26 中国联合网络通信集团有限公司 Room anti-theft prompting method and system
CN110033579A (en) * 2019-05-10 2019-07-19 重庆沐信润喆网络科技有限公司 Folding monitoring device and its monitoring method for existing door and window

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106056818A (en) * 2016-08-04 2016-10-26 中国联合网络通信集团有限公司 Room anti-theft prompting method and system
CN110033579A (en) * 2019-05-10 2019-07-19 重庆沐信润喆网络科技有限公司 Folding monitoring device and its monitoring method for existing door and window

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