JPH07200142A - Device and method for position detection - Google Patents
Device and method for position detectionInfo
- Publication number
- JPH07200142A JPH07200142A JP35081193A JP35081193A JPH07200142A JP H07200142 A JPH07200142 A JP H07200142A JP 35081193 A JP35081193 A JP 35081193A JP 35081193 A JP35081193 A JP 35081193A JP H07200142 A JPH07200142 A JP H07200142A
- Authority
- JP
- Japan
- Prior art keywords
- light receiving
- light source
- divided
- detection
- moving
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複数の受光部を使用し
て、移動光源の位置を検出できるようにした位置検出装
置、および簡単な演算式により移動光源の位置を求める
ことができるようにした位置検出方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position detecting device capable of detecting the position of a moving light source by using a plurality of light receiving parts, and to obtain the position of the moving light source by a simple arithmetic expression. The position detection method described above.
【０００２】[0002]
【従来の技術】位置検出装置としては、例えばコンピュ
ータにおける平面座標の入力装置が知られている。この
入力装置は、マトリクス配列されたスイッチ素子を有す
る指示盤が使用され、この指示盤の所定位置がペンなど
により押されると、その位置に対応したスイッチ出力が
得られるようになっている。2. Description of the Related Art As a position detecting device, for example, a plane coordinate input device in a computer is known. This input device uses an indicator board having switch elements arranged in a matrix, and when a predetermined position on the indicator board is pressed by a pen or the like, a switch output corresponding to the position is obtained.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、マトリ
クス配列されたスイッチ素子を有する入力装置は、指示
盤の構造が複雑であり高価なものとなり、また指示盤の
設置スペースも必要になる。また分解能に限界がある。
最近では光学式の位置検出装置も考えられているが、精
度に問題があり、また光学出力の演算処理が非常に繁雑
である。However, in the input device having the switch elements arranged in a matrix, the structure of the indicator board is complicated and expensive, and the installation space for the indicator board is required. There is also a limit to the resolution.
Recently, an optical position detecting device has been considered, but it has a problem in accuracy and the calculation processing of the optical output is very complicated.
【０００４】本発明は上記従来の課題を解決するもので
あり、移動光源を使用して、その移動位置を光学的に判
別できるようにし、さらに最も簡単な演算式により移動
光源の座標を算出できるようにした位置検出装置および
位置検出方法を提供することを目的としている。The present invention solves the above-mentioned problems of the prior art by using a moving light source so that its moving position can be optically determined, and the coordinates of the moving light source can be calculated by the simplest arithmetic expression. It is an object of the present invention to provide a position detecting device and a position detecting method which are configured as described above.
【０００５】[0005]
【課題を解決するための手段】本発明による位置検出装
置は、移動光源と、間隔を開けて配置された一対の検出
部とが設けられ、それぞれの検出部は、移動光源からの
光の一部を通過させる絞り部と検出部の並び方向に分割
された分割受光部とを有し、且つ両検出部の分割受光部
が同じ平面上に配置され、各分割受光部からの受光出力
により前記移動光源の位置が検出されることを特徴と
し、A position detecting device according to the present invention is provided with a moving light source and a pair of detecting portions arranged at intervals, and each detecting portion includes one of the light from the moving light source. A split light receiving portion divided in the arrangement direction of the detection portion and a narrowing portion for passing the light receiving portion, and the split light receiving portions of both detection portions are arranged on the same plane, and the light receiving output from each split light receiving portion causes Characterized in that the position of the moving light source is detected,
【０００６】さらに、基準点に対して左右等距離に位置
して対を成す検出部が複数組設けられ、全ての検出部の
分割受光部が同じ平面上に配置され、各分割受光部から
の受光出力により前記移動光源の位置が検出されること
を特徴とするものである。Further, a plurality of pairs of detectors located at equal distances to the reference point and forming a pair are provided, the divided light receiving portions of all the detectors are arranged on the same plane, and the divided light receiving portions from the respective divided light receiving portions are arranged. The position of the moving light source is detected by the light reception output.
【０００７】また、本発明の位置検出方法は、一対の検
出部を使用した場合に、一方の検出部内の分割受光部で
の各受光出力をＲiとＬiとし、他方の検出部内の分割受
光部での各受光出力をＲ-iとＬ-iとしたときに、Further, according to the position detecting method of the present invention, when a pair of detecting units is used, the light receiving outputs of the divided light receiving units in one detecting unit are set to R i and L i, and the dividing in the other detecting unit is performed. When each received light output at the light receiving part is R -i and L -i ,
【数４】 により求められたＳiとＴiとから、移動光源の座標位置
を算出するものである。[Equation 4] The coordinate position of the moving light source is calculated from S i and T i obtained by
【０００８】また、対を成す検出部がｎ組設けられてい
る場合には、Further, when n pairs of detection units are provided,
【数５】 の演算を行い、このＳとＴの値から移動光源の座標位置
を算出するものである。[Equation 5] Is calculated, and the coordinate position of the moving light source is calculated from the values of S and T.
【０００９】[0009]
【作用】上記位置検出装置は、対を成す検出部内の分割
受光部が同じ平面内に位置している。移動光源からの光
はその一部が絞り部を経て各分割受光部にて受光され
る。この受光出力からの演算を数４にしたがって行え
ば、三角関数の計算などが不要となり加減乗除の演算だ
けで移動光源の座標を算出できる。In the position detecting device, the divided light receiving portions in the pair of detecting portions are located in the same plane. A part of the light from the moving light source passes through the diaphragm portion and is received by each divided light receiving portion. If the calculation from the received light output is performed according to the equation 4, the calculation of the trigonometric function becomes unnecessary, and the coordinates of the moving light source can be calculated only by the calculation of addition, subtraction, multiplication and division.
【００１０】また対を成す検出部を複数組設けることに
より、移動光源の座標位置検出精度を高くできる。この
場合も数５の演算を行うことにより、簡単な数式にて移
動光源の座標位置を高精度に検出できる。By providing a plurality of pairs of detecting units, the accuracy of detecting the coordinate position of the moving light source can be increased. Also in this case, the coordinate position of the moving light source can be detected with high accuracy by a simple mathematical expression by performing the calculation of Expression 5.
【００１１】[0011]
【実施例】以下、本発明の実施例を図面により説明す
る。図１は、本発明による位置検出装置の基本的な構造
を示す平面図、図２はその検出回路のブロック図、図３
は検出部の構造を拡大して示す平面図である。図１に示
す位置検出装置は、Ｘ−Ｚの二次元座標上での移動光源
１の位置を検出するものであり、例えばコンピュータへ
の二次元的入力デバイスや、工場内での移動物検出、ゲ
ーム装置などへの利用が可能である。Ｘ−Ｚの二次元座
標上に、移動光源１を設ける。この移動光源１は赤外線
光をパルス発光するものである。例えばコンピュータへ
の二次元入力デバイスの場合には、この移動光源がペン
先などに設けられる。図１では、移動光源１の座標位置
を（ｘ0，ｚ0）で示している。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing the basic structure of a position detecting device according to the present invention, FIG. 2 is a block diagram of its detecting circuit, and FIG.
FIG. 4 is an enlarged plan view showing the structure of a detection unit. The position detection device shown in FIG. 1 detects the position of the moving light source 1 on the X-Z two-dimensional coordinates. For example, a two-dimensional input device to a computer or moving object detection in a factory, It can be used for game machines. The moving light source 1 is provided on the X-Z two-dimensional coordinates. The moving light source 1 emits pulsed infrared light. For example, in the case of a two-dimensional input device for a computer, this moving light source is provided on the pen tip or the like. In FIG. 1, the coordinate position of the moving light source 1 is indicated by (x 0 , z 0 ).
【００１２】Ｘ−Ｚ座標面に対し垂直で且つＸ軸方向に
延びる平面をＨとし、この平面Ｈ上に、一対の検出部Ａ
iとＡ-iとが配置されている。Ｘ軸の基準原点０から検
出部Ａiまでの距離を＋ｉ・Ｐとし、基準原点０から検
出部Ａ-iまでの距離を−ｉ・Ｐとする。ｉは整数、Ｐは
所定単位の距離である。それぞれの検出部ＡiとＡ-iに
は、Ｘ軸方向に沿って分割された分割受光部２，２が設
けられ、その前方には一定幅寸法ａの開口３を有する絞
り部材４が設けられている。検出部Ａiでの分割受光部
２の各受光要素からの受光出力をＲiとＬiとし、他方の
検出部Ａ-iでの分割受光部２の各受光要素からの受光出
力をＲ-iとＬ-iとする。また両検出部ＡiとＡ-iのそれ
ぞれの分割受光部２は同じ平面Ｈ上に位置している。A plane perpendicular to the X-Z coordinate plane and extending in the X-axis direction is defined as H, and a pair of detection units A are arranged on the plane H.
i and A- i are arranged. The distance from the reference origin 0 on the X axis to the detection unit A i is + i · P, and the distance from the reference origin 0 to the detection unit A −i is −i · P. i is an integer, and P is a distance of a predetermined unit. Each of the detectors A i and A -i is provided with divided light receiving portions 2 and 2 which are divided along the X-axis direction, and a diaphragm member 4 having an opening 3 having a constant width dimension a is provided in front thereof. Has been. The received light output from the light receiving element of the light receiving portion 2 of the detection unit A i and R i and L i, the received light output from the light receiving element of the light receiving portion 2 of the other detection unit A -i R - Let i and L- i . Further, the respective divided light receiving portions 2 of both the detecting portions A i and A -i are located on the same plane H.
【００１３】まず、検出部Ａでの移動光源１からの光の
検出動作を図３により説明する。図３では、検出部Ａの
中心がＸ座標の基準原点０上に位置している場合を示し
ている。また移動光源１の座標を（ｘ0，ｚ0）としてい
る。絞り部材４での開口３のＸ軸方向の開口寸法をａと
し、絞り部材４と分割受光部２との距離をｄとする。移
動光源１とＸ座標の基準原点０とを結ぶ光の中心線Ｏ1
が、分割受光部２まで延びた位置でのＺ軸との位置ずれ
量をΔｗとする。また開口３を通過した光が分割受光部
２に当たるスポットのＸ軸方向の幅寸法をｗとする。三
角形の相似の式からFirst, the detecting operation of the light from the moving light source 1 in the detecting section A will be described with reference to FIG. FIG. 3 shows a case where the center of the detection unit A is located on the reference origin 0 of the X coordinate. The coordinates of the moving light source 1 are (x 0 , z 0 ). The aperture size of the aperture 3 in the aperture member 4 in the X-axis direction is a, and the distance between the aperture member 4 and the divided light receiving unit 2 is d. A center line O1 of light connecting the moving light source 1 and the reference origin 0 of the X coordinate
However, the amount of positional deviation from the Z axis at the position extending to the divided light receiving unit 2 is Δw. Further, the width dimension in the X-axis direction of the spot where the light passing through the opening 3 strikes the divided light receiving portion 2 is w. From the equation of similarity of triangles
【００１４】[0014]
【数６】 である。ｚ0に対してｄはきわめて小さい値であるか
ら、数７の右辺の分数はほぼ１であり、よって[Equation 6] Is. Since d is an extremely small value with respect to z 0 , the fraction on the right side of Equation 7 is almost 1, and therefore
【００１５】[0015]
【数７】 である。同様に三角形の相似によりΔｗを求めると、[Equation 7] Is. Similarly, if Δw is obtained by the similarity of triangles,
【００１６】[0016]
【数８】 である。[Equation 8] Is.
【００１７】分割受光部２の各受光要素での受光出力を
ＲとＬとする。両受光出力の和（Ｒ＋Ｌ）は、スポット
幅ｗに比例する。一方の受光要素の受光出力Ｒは｛（ｗ
／２）−Δｗ｝に比例し、他方の受光要素の受光出力Ｌ
は｛（ｗ／２）＋Δｗ｝に比例する。これから（Ｒ−
Ｌ）／（Ｒ＋Ｌ）を求めると、The light receiving outputs at the respective light receiving elements of the divided light receiving section 2 are R and L. The sum (R + L) of both received light outputs is proportional to the spot width w. The light receiving output R of one light receiving element is {(w
/ 2) -Δw}, and the light-receiving output L of the other light-receiving element is proportional to
Is proportional to {(w / 2) + Δw}. From now on (R-
When L) / (R + L) is calculated,
【００１８】[0018]
【数９】 となる。この数９に、前記数７と数８を代入すると、[Equation 9] Becomes Substituting the equations 7 and 8 into the equation 9,
【００１９】[0019]
【数１０】 となる。数１０において、（２ｄ／ａ）は定数である。
また（ｘ0／ｚ0）はtanθである。[Equation 10] Becomes In Expression 10, (2d / a) is a constant.
Further, (x 0 / z 0 ) is tan θ.
【００２０】ここで上記の計算を図１にあてはめる。図
１に示す検出部Ａiの中心軸Ｚiは、図３でのＸ軸の基準
原点０に対してＸ方向へ（＋ｉ・Ｐ）だけ移動している
のであるから、数１０において（ｘ0）を（−ｉ・Ｐ＋
ｘ0）に置き換えれば、（Ｒi−Ｌi）／（Ｒi＋Ｌi）が
得られる。すなわち、The above calculations now apply to FIG. Since the central axis Z i of the detection unit A i shown in FIG. 1 is moved by (+ i · P) in the X direction with respect to the reference origin 0 of the X axis in FIG. 0 ) to (-i · P +
Substituting x 0 ) gives (R i −L i ) / (R i + L i ). That is,
【００２１】[0021]
【数１１】 である。また検出部Ａ-iの中心軸Ｚ-iは、図３のＸ軸の
基準原点０からＸ軸方向へ（−ｉ・Ｐ）だけ移動してい
るのであるから、同様にして[Equation 11] Is. Further, since the central axis Z -i of the detection unit A -i is moved by (-i · P) from the reference origin 0 of the X axis in FIG.
【００２２】[0022]
【数１２】 である。数１１と数１２の和をＳiとすると、これは[Equation 12] Is. Let S i be the sum of equations 11 and 12
【００２３】[0023]
【数１３】 となる。また数１１から数１２を減算したものをＴiと
すると、これは[Equation 13] Becomes If T i is obtained by subtracting Eq. 12 from Eq. 11, this is
【００２４】[0024]
【数１４】 となる。[Equation 14] Becomes
【００２５】このＳiとＴiは、図２に示す回路により得
られる。この両出力がマイクロコンピュータに与えら
れ、移動光源１の座標（ｘ0，ｚ0）が算出される。この
算出について説明する。数１３で得られたＳiでは、
（４ｄ／ａ）が定数であり、（ｘ0／ｚ0）がtanθであ
る。数１４で得られたＴiでは、（４ｄ・ｉ・Ｐ／ａ）
が定数であり、座標に関する変数は（１／ｚ0）のみで
ある。したがって、マイクロコンピュータでのプログラ
ム演算により、まずＴiから移動光源１のＺ座標上の位
置ｚ0が求められ、これとＳiとからＸ座標上の位置ｘ0
が求められる。上記数式のように加減乗除の演算だけ
で、移動光源１の二次元座標上の位置を求めることがで
きる。三角関数などの演算が不要であるため、マイクロ
コンピュータでのソフトウエアも簡単なものになり、回
路上の負担がきわめて軽くなる。The S i and T i are obtained by the circuit shown in FIG. Both outputs are given to the microcomputer, and the coordinates (x 0 , z 0 ) of the moving light source 1 are calculated. This calculation will be described. In S i obtained by Equation 13,
(4d / a) is a constant, and (x 0 / z 0 ) is tan θ. In T i obtained by the equation 14, (4d · i · P / a)
Is a constant, and the only variable relating to coordinates is (1 / z 0 ). Therefore, the position z 0 on the Z coordinate of the moving light source 1 is first obtained from T i by the program operation in the microcomputer, and the position x 0 on the X coordinate is obtained from this and S i.
Is required. The position on the two-dimensional coordinate of the moving light source 1 can be obtained only by the addition, subtraction, multiplication and division calculation as in the above formula. Since calculations such as trigonometric functions are unnecessary, the software on the microcomputer becomes simple and the load on the circuit becomes extremely light.
【００２６】本発明の位置検出装置では、図１に示すよ
うに、対を成す検出部ＡiとＡ-iを１組設けるだけで、
移動光源１の座標（ｘ0，ｚ0）を簡単に算出することが
できる。ただし検出部が１組だけの場合には、分割受光
部２に当たる光スポットのゆらぎや分割受光部２の受光
精度のばらつきが、そのまま移動光源の座標位置の算出
の誤差分として現れてしまう。そこで、より一層高精度
な位置検出を行うために、図４に示すように、Ｘ軸に沿
って延びる平面Ｈに対を成す検出部を複数組設けること
が好ましい。In the position detecting device of the present invention, as shown in FIG. 1, by providing only one pair of detecting portions A i and A -i ,
The coordinates (x 0 , z 0 ) of the moving light source 1 can be easily calculated. However, when there is only one set of detection units, fluctuations in the light spot impinging on the divided light receiving unit 2 and variations in the light receiving accuracy of the divided light receiving unit 2 appear as they are as errors in the calculation of the coordinate position of the moving light source. Therefore, in order to detect the position with higher accuracy, it is preferable to provide a plurality of pairs of detection units that make a pair on the plane H extending along the X axis, as shown in FIG.
【００２７】図４では、検出部Ａ1とＡ-1とが、Ｚ軸
（Ｘ軸の基準原点０）に対して距離Ｐの位置にあり、次
の組の検出部Ａ2とＡ-2とが、Ｚ軸に対して距離２Ｐの
位置にある。対を成す検出部の組数をｎ組とすると、ｎ
組めの検出部ＡnとＡ-nのＺ軸からの距離はｎＰである
（ｎは整数）。なお、全ての検出部において、分割受光
部２は同じ平面Ｈ上に位置している。なお、図４におい
ても、それぞれの分割受光部２の前方に寸法ａの開口３
を有する絞り部材４が設けられるが、図４ではこれの図
示を省略している。対を成す各組の検出部でのＳiとＴi
の値は、数１３と数１４において、ｉを１，２，３，…
ｎとしたものに等しい（なおＳiにはｉの項が無い）。
よって対を成す各組の検出部において求めたＳiとＴiの
値を累積加算したものを求め、これをＳとＴとおくと、In FIG. 4, the detectors A 1 and A -1 are located at a distance P from the Z axis (reference origin 0 of the X axis), and the detectors A 2 and A -2 of the next set are detected. And are at a position of distance 2P with respect to the Z axis. If the number of pairs of detectors is n, then n
The distance between the assembled detectors A n and A −n from the Z axis is nP (n is an integer). In addition, in all the detection units, the divided light receiving units 2 are located on the same plane H. Note that, also in FIG. 4, an opening 3 having a dimension a is provided in front of each divided light receiving portion 2.
Although the diaphragm member 4 having the above is provided, the illustration thereof is omitted in FIG. S i and T i at the detectors of each pair forming a pair
The values of i are 1, 2, 3, ...
It is equal to n (note that S i has no i term).
Therefore, a value obtained by cumulatively adding the values of S i and T i obtained by the detection units of each pair forming a pair is obtained, and these are set as S and T,
【００２８】[0028]
【数１５】 となる。数１５により求められるＳとＴを使用すれば、
移動光源１の検出精度を非常に高くすることができる。
すなわち１組の一対の検出部を使用した場合の検出誤差
を求め、複数組の検出部の検出誤差として統計すると、
これは正規分布になると考えられる。１組の検出部での
検出誤差の正規分布上での分散をσi 2とすると、ｎ組の
検出部を設けた場合の分散σ2は、[Equation 15] Becomes If S and T obtained by the equation 15 are used,
The detection accuracy of the moving light source 1 can be made very high.
That is, when the detection error when using one pair of detection units is obtained and statistically calculated as the detection error of a plurality of detection units,
This is considered to have a normal distribution. When the distribution on the detection error normal distribution of a set of detector and sigma i 2, variance sigma 2 obtained when a n sets of detector,
【００２９】[0029]
【数１６】 となる。すなわち組数ｎが多いほど、検出誤差が低下す
ることになる。[Equation 16] Becomes That is, the larger the number of sets n, the lower the detection error.
【００３０】なお、図４の実施例では、１組めの検出部
Ａ1とＡ-1とＸ軸の基準原点０との距離がＰであり、ま
た次の組の検出部Ａ2，Ａ-2と、１組めの検出部との距
離がＰとなり、全ての検出部が等ピッチにて配列されて
いるが、このピッチＰは移動光源１の移動領域に応じて
任意に設定される。ただし、１組めの検出部Ａ1とＡ-1
とＸ軸の基準原点０との距離をＰよりも長いＬとしてお
き、次の組の検出部から等ピッチＰとすることが好まし
い。この場合のＳとＴの演算も数１５とほぼ同じ程度の
簡単なものとなる。[0030] In the embodiment of FIG. 4, first distance between the detection portion A 1 and A -1 and the reference origin 0 of the X-axis of Kume is P, also the next set of the detection unit A 2, A - The distance between 2 and the first set of detection units is P, and all the detection units are arranged at equal pitches, but this pitch P is set arbitrarily according to the moving region of the moving light source 1. However, the first set of detectors A 1 and A -1
It is preferable to set the distance from the reference origin 0 on the X-axis to L, which is longer than P, and set the equal pitch P from the detection unit of the next set. In this case, the calculation of S and T is also as simple as approximately the equation 15.
【００３１】また、上記の実施例では、移動光源１が二
次元のＸ−Ｚ座標上を移動するものとしたが、図５に示
すように、移動光源１が三次元のＸ−Ｙ−Ｚ座標内にて
移動する場合も上記実施例と同様にその移動位置を検出
できる。この場合の各検出部は４分割受光部を有するも
のとなる。Further, in the above embodiment, the moving light source 1 is supposed to move on the two-dimensional X-Z coordinates, but as shown in FIG. 5, the moving light source 1 is a three-dimensional X-Y-Z coordinate. When moving within the coordinates, the moving position can be detected as in the above embodiment. In this case, each detection unit has a four-division light receiving unit.
【００３２】Ｘ軸方向に並ぶ分割受光部からの受光出力
Ｒi，ＬiとＲ-i，Ｌ-iにより、移動光源１のＸ−Ｚ座標
上の位置が検出でき、またＹ軸方向に並ぶ分割受光部か
らの受光出力Ｒj，ＬjとＲ-j，Ｌ-jとにより、Ｙ−Ｚ座
標上での移動光源の位置を検出でき、これにより移動光
源１の三次元座標上の位置（ｘ0，ｙ0．ｚ0）を認識で
きる。この場合、４分割受光部と絞り部材を有する検出
部は４個で１組となるが、これをＸ−Ｙ方向に並ぶよう
に複数組設けることにより、さらに高精度な検出が可能
となる。この三次元座標での移動光源の検出により、コ
ンピュータへの三次元入力装置や、バーチャルリアリテ
ィ機種への応用が可能となる。The position on the XZ coordinate of the moving light source 1 can be detected by the light receiving outputs R i , L i and R −i , L −i from the divided light receiving portions arranged in the X axis direction, and also in the Y axis direction. The position of the moving light source on the YZ coordinate can be detected by the light receiving outputs R j , L j and R −j , L −j from the divided light receiving units arranged side by side. The position (x 0 , y 0 .z 0 ) can be recognized. In this case, four detectors each having a four-divided light receiving section and diaphragm member make up one set, but by providing a plurality of sets so as to be arranged in the XY direction, it is possible to perform detection with higher accuracy. By detecting the moving light source in the three-dimensional coordinates, it becomes possible to apply to a three-dimensional input device to a computer and a virtual reality model.
【００３３】[0033]
【発明の効果】以上のように、本発明では、分割受光部
を平面配置することにより、各分割受光部からの受光出
力の加減乗除の演算だけで、移動光源の位置を高精度に
検出できる。As described above, according to the present invention, by arranging the divided light receiving portions in a plane, the position of the moving light source can be detected with high accuracy only by the calculation of addition, subtraction, multiplication and division of the light receiving output from each divided light receiving portion. .
【００３４】また対を成す検出部を複数組設けることに
より、さらに高精度な位置検出が可能になる。Further, by providing a plurality of pairs of detecting portions, it is possible to detect the position with higher accuracy.
【図１】本発明の位置検出装置の一例として二次元座標
での位置検出装置を示す平面図、FIG. 1 is a plan view showing a position detecting device in two-dimensional coordinates as an example of the position detecting device of the present invention,
【図２】図１に示す位置検出装置の検出出力の処理回路
のブロック図、2 is a block diagram of a detection output processing circuit of the position detection device shown in FIG. 1;
【図３】ひとつの検出部での検出動作を説明する拡大平
面図、FIG. 3 is an enlarged plan view illustrating a detection operation by one detection unit,
【図４】対を成す検出部が複数組設けられた二次元座標
での位置検出装置を示す平面図、FIG. 4 is a plan view showing a two-dimensional coordinate position detection device provided with a plurality of pairs of detection units;
【図５】三次元座標での位置検出装置を示す斜視図、FIG. 5 is a perspective view showing a position detection device with three-dimensional coordinates.
１ 移動光源 ２ 分割受光部 ３ 開口 ４ 絞り部材 Ａi，Ａ-i 検出部 Ｒi，Ｌi，Ｒ-i，Ｌ-i 受光出力 DESCRIPTION OF SYMBOLS 1 Moving light source 2 Split light receiving part 3 Aperture 4 Aperture member A i , A -i detection part R i , L i , R -i , L -i light receiving output
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 荒尾 東京都大田区雪谷大塚町１番７号 アルプ ス電気株式会社内 (72)発明者 斉藤 潤一 東京都大田区雪谷大塚町１番７号 アルプ ス電気株式会社内 (72)発明者 片桐 和宏 東京都大田区雪谷大塚町１番７号 アルプ ス電気株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sato Arao 1-7 Yukiya Otsuka-cho, Ota-ku, Tokyo Alps Electric Co., Ltd. (72) Inventor Junichi Saito 1-7 Yukiya-Otsuka-cho, Ota-ku, Tokyo Alp Su Electric Co., Ltd. (72) Inventor Kazuhiro Katagiri 1-7 Yukiya Otsuka-cho, Ota-ku, Tokyo Alps Electric Co., Ltd.
Claims (4)
対の検出部とが設けられ、それぞれの検出部は、移動光
源からの光の一部を通過させる絞り部と検出部の並び方
向に分割された分割受光部とを有し、且つ両検出部の分
割受光部が同じ平面上に配置され、各分割受光部からの
受光出力により前記移動光源の位置が検出されることを
特徴とする位置検出装置。1. A moving light source and a pair of detection units arranged at intervals are provided, and each detection unit has an arrangement direction of a diaphragm unit and a detection unit for passing a part of light from the moving light source. And a divided light receiving unit divided into two, the divided light receiving units of both detection units are arranged on the same plane, and the position of the moving light source is detected by the light reception output from each divided light receiving unit. Position detection device.
を成す検出部が複数組と、移動光源とが設けられ、それ
ぞれの検出部は、移動光源からの光の一部を通過させる
絞り部と検出部の並び方向に分割された分割受光部とを
有し、且つ全ての検出部の分割受光部が同じ平面上に配
置され、各分割受光部からの受光出力により前記移動光
源の位置が検出されることを特徴とする位置検出装置。2. A plurality of sets of detection units, which are paired at equal distances to the reference point and form a pair, and a moving light source are provided, and each detection unit passes a part of light from the moving light source. The moving light source has a diaphragm section and a divided light receiving section divided in the arrangement direction of the detecting sections, and the divided light receiving sections of all the detecting sections are arranged on the same plane, and light reception output from each divided light receiving section The position detecting device is characterized in that the position of the position is detected.
方法であって、一方の検出部内の分割受光部での各受光
出力をＲiとＬiとし、他方の検出部内の分割受光部での
各受光出力をＲ-iとＬ-iとしたときに、 【数１】 により求められたＳiとＴiとから、移動光源の座標位置
が算出される位置検出方法。3. A position detecting method using the apparatus according to claim 1, wherein the light receiving outputs of the divided light receiving units in one of the detection units are R i and L i, and the divided light receiving unit in the other detection unit is used. When each received light output at R- i and L- i is A position detection method in which the coordinate position of the moving light source is calculated from S i and T i obtained by.
方法であって、ある組の一方の検出部内の分割受光部で
の各受光出力をＲiとＬiとし、他方の検出部内の分割受
光部での各受光出力をＲ-iとＬ-iとしたときに、 【数２】 によりＳiとＴiを算出し、さらに、対を成す検出部の組
数をｎとしたときに、 【数３】 の演算を行い、このＳとＴの値から移動光源の座標位置
が算出される位置検出方法。4. A position detecting method using the apparatus according to claim 2, wherein each of the light receiving outputs of the divided light receiving units in one of the detection units of a set is defined as R i and L i , and the other of the detection units is detected. When each light receiving output in the divided light receiving unit is R -i and L -i , S i and T i are calculated by the following equation, and when the number of pairs of detection units is n, And the coordinate position of the moving light source is calculated from the values of S and T.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35081193A JP2901476B2 (en) | 1993-12-27 | 1993-12-27 | Position detecting device and position detecting method |
| TW083110501A TW256900B (en) | 1993-11-25 | 1994-11-14 | |
| GB9722591A GB2316482B (en) | 1993-11-25 | 1994-11-23 | Inclination detection apparatus and input apparatus |
| GB9423676A GB2284478B (en) | 1993-11-25 | 1994-11-23 | Inclination detection apparatus and input apparatus |
| GB9722590A GB2317254B (en) | 1993-11-25 | 1994-11-23 | Transmitting/receiving apparatus |
| GB9722589A GB2317253B (en) | 1993-11-25 | 1994-11-23 | Transmitting/receiving apparatus |
| DE4442107A DE4442107C2 (en) | 1993-11-25 | 1994-11-25 | Device for determining the direction angle to the location of a light source |
| US08/717,445 US5963194A (en) | 1993-11-25 | 1996-09-20 | Apparatus for inclination detection and input apparatus using this apparatus |
| US08/716,977 US6014129A (en) | 1993-11-25 | 1996-09-20 | Coordinate position of moving light source by using separated groups of detectors each group having an iris |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35081193A JP2901476B2 (en) | 1993-12-27 | 1993-12-27 | Position detecting device and position detecting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07200142A true JPH07200142A (en) | 1995-08-04 |
| JP2901476B2 JP2901476B2 (en) | 1999-06-07 |
Family
ID=18413040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35081193A Expired - Fee Related JP2901476B2 (en) | 1993-11-25 | 1993-12-27 | Position detecting device and position detecting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2901476B2 (en) |
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| JP2901476B2 (en) | 1999-06-07 |
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