JPH0330980Y2 - - Google Patents
Info
- Publication number
- JPH0330980Y2 JPH0330980Y2 JP11559886U JP11559886U JPH0330980Y2 JP H0330980 Y2 JPH0330980 Y2 JP H0330980Y2 JP 11559886 U JP11559886 U JP 11559886U JP 11559886 U JP11559886 U JP 11559886U JP H0330980 Y2 JPH0330980 Y2 JP H0330980Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- bifurcated tip
- light emitting
- receiving element
- pairs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 8
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
- Electronic Switches (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案はエレベータ等の移動物体の位置決め移
動方向の判別、並びに移動速度の測定等に使用す
る光電スイツチに関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a photoelectric switch used for positioning, determining the direction of movement, and measuring the moving speed of a moving object such as an elevator.
従来の技術
エレベータや軌道走行クレーン等の移動物体の
位置決めに利用する光電スイツチは、一般に第５
図に示すような形状を有している。Conventional technology Photoelectric switches used for positioning moving objects such as elevators and track-traveling cranes generally have a fifth switch.
It has a shape as shown in the figure.
第５図に示す光電スイツチ１において、２は馬
蹄形のケース、３，４はケースの二股状先端部２
ａ，２ａの対向する二面に取付けたLED等の投
光素子及びフオトトランジスタ等の受光素子、５
はケース基部から導出された外部接続用電線であ
る。 In the photoelectric switch 1 shown in FIG. 5, 2 is a horseshoe-shaped case, and 3 and 4 are bifurcated ends 2 of the case.
A light emitting element such as an LED and a light receiving element such as a phototransistor attached to two opposing surfaces of a and 2a, 5
is an external connection wire led out from the base of the case.
この光電スイツチ１は、二股状先端部２ａ，２
ａの間を、移動物体に取付けた遮光ロツド６が通
過したとき、投受光素子間の光１の遮光検出信号
を出力するものである。 This photoelectric switch 1 has bifurcated tip portions 2a, 2
When a light-shielding rod 6 attached to a moving object passes between the light emitting and receiving elements, a light-shielding detection signal of the light 1 between the light emitting and receiving elements is output.
このような光電スイツチ１は、移動物体の移動
路に沿う位置に設けられ、遮光検出信号の発生に
より、移動物体の現在位置を知り、その位置決め
制御に利用するのが基本的な使用方法である。 Such a photoelectric switch 1 is installed at a position along the path of movement of a moving object, and its basic usage is to know the current position of the moving object by generating a light-blocking detection signal and use it to control the positioning. .
而して、この光電スイツチ１で、より適確な制
御をしようとすれば、二個の光源スイツチを並べ
て配置し、それらの遮光検出信号の発生の順番に
より移動方向を判別し、それらに遮光検出信号の
発生の時間間隔から移動速度を求めることもでき
る。 Therefore, if you want to perform more accurate control with this photoelectric switch 1, you can place two light source switches side by side, determine the direction of movement based on the order in which their shading detection signals are generated, and then apply shading to them. The moving speed can also be determined from the time interval of generation of the detection signal.
考案が解決しようとする問題点
上述したように、従来の光電スイツチ１で移動
方向の判別並びに移動速度の測定を行なおうとす
れば、二個の光電スイツチ１，１を所定の間隔で
配置しなければならない。Problems to be Solved by the Invention As mentioned above, if the conventional photoelectric switch 1 is to be used to determine the moving direction and measure the moving speed, it is necessary to arrange two photoelectric switches 1 at a predetermined interval. There must be.
このため光電スイツチの必要数が二倍となり、
取付スペース及び設置費用が倍加する。特に二個
の光電スイツチの設置は、移動速度の正確な測定
をするため相対的な位置寸法を一定にする必要が
あり、設置作業に手間がかかるといつた問題があ
つた。 This doubles the number of photoelectric switches required.
Installation space and installation costs will double. In particular, the installation of two photoelectric switches required the relative positional dimensions to be constant in order to accurately measure the moving speed, which caused the problem that the installation work was time-consuming.
問題点を解決するための手段
本考案は、上記従来の問題点に鑑みてなされた
もので、問題点を解決するための手段は、二股状
先端部を有するケースと、二股状先端部に挟まれ
た空間を通して投受光を行なうように、二股状先
端部に配設された投光素子と受光素子の二対と、
投光素子と受光素子の二対の夫々投受光動作を時
分割で交互に行なわせ、各対における遮光検出の
有無を判定して出力する制御部とからなり、二股
状先端部の対向する二面夫々における投光素子又
は受光素子の二箇所の取付位置を結ぶ線は、二股
状先端部の突出方向に対して斜め方向であること
を特徴とする光電スイツチである。Means for Solving the Problems The present invention has been made in view of the above conventional problems, and the means for solving the problems are a case having a bifurcated tip and a case sandwiched between the bifurcated tip. two pairs of a light emitting element and a light receiving element disposed at the bifurcated tip so as to emit and receive light through the space;
It consists of a control section that alternately performs the light emitting and receiving operations of each of the two pairs of light emitting element and light receiving element in a time-sharing manner, and determines and outputs the presence or absence of light blocking detection in each pair. The photoelectric switch is characterized in that the line connecting the two mounting positions of the light emitting element or the light receiving element on each surface is diagonal to the protruding direction of the bifurcated tip.
作 用
上記構成の光電スイツチは、二対の投受光素子
が、夫々単独に移動物体の有無を検出する。この
二つの出力信号により移動物体の位置を知ると同
時に、その発生の順番により移動方向を知り、さ
らに発生時間の間隔により、移動速度を知ること
ができる。二対の投受光素子はケースの二股状先
端部の突出方向に対して斜め方向に取り付けられ
ているので、移動物体が、ケースの二股状先端部
の間に縦方向から入つて来ても横方向から入つて
来ても、上記移動方向及び移動速度を知ることが
できる。従つて、取付けの自由度が大きく、取付
け作業が容易である。Operation In the photoelectric switch configured as described above, the two pairs of light emitting/receiving elements each independently detect the presence or absence of a moving object. From these two output signals, the position of the moving object can be known, and at the same time, the direction of movement can be determined from the order in which they occur, and the speed of movement can also be determined from the interval between the times in which they occur. The two pairs of light emitting and receiving elements are installed diagonally to the protruding direction of the bifurcated tip of the case, so even if a moving object enters between the bifurcated tip of the case from the vertical direction, Even if the object is coming from the same direction, the moving direction and moving speed can be known. Therefore, there is a large degree of freedom in installation, and the installation work is easy.
実施例 本考案の実施例について以下説明する。Example Examples of the present invention will be described below.
本考案の一実施例である光電スイツチ１１を示
す第１図において、１２は馬蹄形のケースであ
る。１３−１，１３−２は第１及び第２の投光素
子で、LED等の発光素子が使用される。１４−
１，１４−２は第１及び第２の受光素子で、フオ
トトランジスタ、フオトダイオード等が使用され
る。１５はケース内の制御部から導出された外部
接続用電線である。 In FIG. 1 showing a photoelectric switch 11 which is an embodiment of the present invention, 12 is a horseshoe-shaped case. 13-1 and 13-2 are first and second light projecting elements, and light emitting elements such as LEDs are used. 14-
Reference numerals 1 and 14-2 are first and second light receiving elements, and phototransistors, photodiodes, etc. are used. Reference numeral 15 denotes an external connection wire led out from the control section inside the case.
上記第１及び第２の投光素子１３−１，１３−
２及び受光素子１４−１，１４−２は、ケースの
二股状先端部１２ａ，１２ａの対向する内面Ｆ，
Ｆに、第２図に示すような位置関係で取付けられ
る。すなわち、第１の投光素子１３−１及び第２
の受光素子１４−２の取付位置を結ぶ線、及び第
１の受光素子１４−１及び第２の投光素子１３−
２の取付位置を結ぶ線は、二股状先端部の突出方
向Ｙに対して、斜め方向となつている。このよう
に取付けるのは、エレベータに取付けられた遮光
ロツド等１６が横方向〔Ｘ方向〕に入つて来て
も、縦方向〔Ｙ方向〕に入つて来ても、各対の投
受光素子が時間差〔xt，yt〕を持つて、遮光を検
出できるようにするためである。 The first and second light projecting elements 13-1, 13-
2 and the light-receiving elements 14-1 and 14-2 are located on the opposing inner surfaces F of the bifurcated tips 12a and 12a of the case.
It is attached to F in the positional relationship shown in Figure 2. That is, the first light projecting element 13-1 and the second light projecting element 13-1
A line connecting the mounting positions of the light-receiving element 14-2, and the first light-receiving element 14-1 and the second light-emitting element 13-
The line connecting the two attachment positions is diagonal to the protruding direction Y of the bifurcated tip. Mounting in this way ensures that each pair of light emitting/receiving elements is This is to allow the time difference [xt, yt] to detect light shielding.
次に各対の投受光素子１３−１，１３−２，１
４−１，１４−２と共に、ケース１２の内部に取
付けられる制御部１７の構成例について説明す
る。 Next, each pair of light emitting/receiving elements 13-1, 13-2, 1
An example of the configuration of the control unit 17 attached inside the case 12 together with 4-1 and 14-2 will be described.
制御部１７を示す第３図において、１８は第４
図に示すような矩形波Ａを発生する発振回路、１
９は矩形波Ａを反転して矩形波Ｂを生成するイン
バータ、２０及び２１は180°位相のずれた２つの
矩形波Ａ，Ｂの夫々の立ち上がりから所定時間幅
ｔの矩形波ａ，ｂを生成する単安定回路、２２，
２３は単安定回路２０，２１の各出力を受け、そ
のハイレベルの期間だけ第１及び第２の投光素子
であるLED１３−１，１３−２を発生させる駆
動回路、２４，２５は対応する単安定回路２０，
２１の出力ａ，ｂがハイレベルの期間だけ第１及
び第２の受光素子であるフオトトランジスタ１４
−１，１４−２のハイレベル出力を通過させる同
期検波回路、２６，２７は同期検波回路２４，２
５からの出力が、例えばｎ発連続して発生した等
の所定の条件によつて、遮光か受光かを判定する
判定回路、２８，２９は判定回路２６，２７の出
力を増幅して出力する出力回路である。 In FIG. 3 showing the control unit 17, 18 is the fourth
An oscillation circuit that generates a rectangular wave A as shown in the figure, 1
9 is an inverter that inverts rectangular wave A to generate rectangular wave B; 20 and 21 are inverters that generate rectangular waves a and b with a predetermined time width t from the respective rises of rectangular waves A and B, which are 180 degrees out of phase; Monostable circuit to generate, 22,
23 is a drive circuit that receives each output of the monostable circuits 20 and 21 and generates LEDs 13-1 and 13-2, which are the first and second light projecting elements, only during the high level period; 24 and 25 are corresponding drive circuits; monostable circuit 20,
Phototransistor 14, which is the first and second light receiving element, only during the period when the outputs a and b of 21 are at high level.
-1, 14-2 are synchronous detection circuits that pass the high level outputs; 26, 27 are synchronous detection circuits 24, 2;
Judgment circuits 28 and 29 amplify the outputs of the judgment circuits 26 and 27 and output the amplified outputs. This is an output circuit.
上記構成の光電スイツチ１１は、次のように動
作する。 The photoelectric switch 11 having the above configuration operates as follows.
単安定回路２０，２１の位相が180°ずれた２つ
の出力ａ，ｂの発生タイミングで、第１及び第２
の投光素子１３−１，１３−２は交互に発光す
る。一方第１及び第２の受光素子１４−１，１４
−２は受光時にハイレベル出力を発生する。この
ハイレベル出力は同期検波回路２４，２５に入力
されるが、同期検波回路２４，２５は単安定回路
２０，２１の出力ａ，ｂの発生時のみ開く。従つ
て、二つの判定回路２６，２７には、自己の発光
素子１３−１，１３−２の発光タイミングに、自
己の受光素子１４−１，１４−２が受光した場合
のみ受光パルス信号が入力されることになり、二
対の投受光素子相互間の反射光等による混信は防
止される。判定回路２６，２７は、一定の条件、
例えば受光パルス信号が連続してｎ発入力される
か否かによつて、受光・遮光の有無を判別する。
このような判別によつて、外乱光等による誤検出
が防止される。この二種の判別結果は、出力回路
２８，２９によつて、別々に出力される。 The first and second
The light projecting elements 13-1 and 13-2 alternately emit light. On the other hand, the first and second light receiving elements 14-1, 14
-2 generates a high level output when receiving light. This high level output is input to the synchronous detection circuits 24 and 25, but the synchronous detection circuits 24 and 25 are opened only when the outputs a and b of the monostable circuits 20 and 21 are generated. Therefore, the light reception pulse signal is input to the two judgment circuits 26 and 27 only when the light receiving elements 14-1 and 14-2 of the self receive light at the timing of light emission of the light emitting elements 13-1 and 13-2 of the self. Therefore, interference caused by reflected light between the two pairs of light emitting/receiving elements is prevented. Judgment circuits 26 and 27 are configured under certain conditions,
For example, the presence or absence of light reception/light blocking is determined based on whether or not n light reception pulse signals are input continuously.
Such a determination prevents false detection due to ambient light or the like. These two types of discrimination results are output separately by output circuits 28 and 29.
この二種の出力信号は、使用目的に応じて外部
に設けた所定の処理回路に入力され、移動物体の
位置検出、移動方向の判別、又は移動速度の測定
に利用される。 These two types of output signals are input to a predetermined processing circuit provided externally depending on the purpose of use, and are used for detecting the position of the moving object, determining the moving direction, or measuring the moving speed.
なお、二つの投光素子同士及び二つの受光素子
同士を、夫々二股状先端部の同一面Ｆに配置する
こともできる。 Note that the two light projecting elements and the two light receiving elements can also be arranged on the same surface F of the bifurcated tip.
考案の効果
本考案の光電スイツチは一個で、移動物体の位
置検出の他に、移動方向判別、及び移動速度測定
ができる。従つて、取付け作業の手間、及び設置
コストを半減できる。Effects of the Invention A single photoelectric switch of the present invention can not only detect the position of a moving object, but also determine the moving direction and measure the moving speed. Therefore, the time and effort required for installation work and the installation cost can be halved.
特に、本考案では、上述したように二対の投受
光素子が斜め方向に配置されているので、移動方
向判別、移動速度測定に使用する場合において、
移動路における取付け方向に制約が少なく、作業
の自由度が大きく、実用的価値が高い。 In particular, in the present invention, since the two pairs of light emitting and receiving elements are arranged diagonally as described above, when used for determining the moving direction and measuring the moving speed,
There are few restrictions on the mounting direction on the moving path, and there is a large degree of freedom in work, which has high practical value.
また、本考案では投受光素子の二対が一定の間
隔で取付けられているため、移動速度の測定に利
用する場合において、従来の二個の光電スイツチ
を使用する場合に必要な間隔調整作業が不要にな
る利点もある。 In addition, in this invention, two pairs of light emitting and receiving elements are installed at a fixed interval, so when using it for measuring moving speed, there is no need to adjust the distance required when using two conventional photoelectric switches. There is also the advantage of not needing it.
第１図は本考案の一実施例の光電スイツチの外
観形状を示す斜視図、第２図は第１図に示す光電
スイツチのケースにおける投光素子及び受光素子
の二対の取付け位置関係を示す図、第３図は制御
部の構成例を示すブロツク図、第４図は制御部の
動作タイミング図である。第５図は従来の光電ス
イツチの外観を示す斜視図である。
１１……光電スイツチ、１２……ケース、１２
ａ……二股状先端部、１３−１，１３−２……第
１及び第２の投光素子、１４−１，１４−２……
第１及び第２の受光素子、１６……遮光ロツド、
１７……制御部、Ｆ……二股状先端部の対向する
内面。
Fig. 1 is a perspective view showing the external shape of a photoelectric switch according to an embodiment of the present invention, and Fig. 2 shows the mounting positional relationship of two pairs of a light emitting element and a light receiving element in the case of the photoelectric switch shown in Fig. 1. 3 is a block diagram showing an example of the configuration of the control section, and FIG. 4 is an operation timing diagram of the control section. FIG. 5 is a perspective view showing the appearance of a conventional photoelectric switch. 11...Photoelectric switch, 12...Case, 12
a... bifurcated tip, 13-1, 13-2... first and second light projecting elements, 14-1, 14-2...
First and second light receiving elements, 16...shading rod,
17... Control section, F... Opposing inner surfaces of the bifurcated tip.
Claims (1)
行なうように、二股状先端部に配設された投光素
子と受光素子の二対と、 投光素子と受光素子の二対の夫々の投受光動作
を時分割で交互に行なわせ、各対における遮光検
出の有無を判定して出力する制御部とからなり、 二股状先端部の対向する二面夫々における投光
素子又は受光素子の二箇所の取付位置を結ぶ線
は、二股状先端部の突出方向に対して斜め方向で
あることを特徴とする光電スイツチ。[Claims for Utility Model Registration] A case having a bifurcated tip, and a light emitting element and a light receiving element disposed on the bifurcated tip so as to emit and receive light through the space sandwiched between the bifurcated tip. It consists of two pairs of light transmitting elements and a light receiving element, and a control unit that alternately performs the light emitting and receiving operations of the two pairs of light transmitting element and light receiving element in a time-sharing manner, and determines and outputs the presence or absence of light blocking detection in each pair, and has a bifurcated tip. A photoelectric switch characterized in that a line connecting the two mounting positions of the light emitting element or the light receiving element on each of the two opposing sides of the part is diagonal to the protruding direction of the bifurcated tip part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11559886U JPH0330980Y2 (en) | 1986-07-28 | 1986-07-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11559886U JPH0330980Y2 (en) | 1986-07-28 | 1986-07-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6322045U JPS6322045U (en) | 1988-02-13 |
| JPH0330980Y2 true JPH0330980Y2 (en) | 1991-07-01 |
Family
ID=30999400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11559886U Expired JPH0330980Y2 (en) | 1986-07-28 | 1986-07-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0330980Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006105875A (en) * | 2004-10-07 | 2006-04-20 | Nippon Sheet Glass Co Ltd | Light beam detecting apparatus |
| KR101066290B1 (en) * | 2011-02-16 | 2011-09-20 | 윤일식 | Non-toutch type selection switch |
-
1986
- 1986-07-28 JP JP11559886U patent/JPH0330980Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6322045U (en) | 1988-02-13 |
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