【発明の詳細な説明】［発明の技術分野］この発明は３次元位置検出装置に係り、特にコンピュー
タへの３次元データ入力に好適な３次元位置検出ｖｉｇ
！Ｌに関する。Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a three-dimensional position detection device, and in particular to a three-dimensional position detection device suitable for inputting three-dimensional data into a computer.
! Regarding L.
［発明の背景とその問題点］従来コンピュータに３次元データを人力する際には、例
えばＸ＋ ｙ座標を与えるプロッタブレット上で行い、
３次座標を特定していた。このような人力法は手続が煩
雑であるばかりか、所望位置への位置設定は、容易でな
かった。[Background of the invention and its problems] Conventionally, when three-dimensional data is manually input to a computer, it is done on a plotter that gives, for example, X+y coordinates.
The tertiary coordinates were specified. Not only does this manual method require complicated procedures, but it is also difficult to set the desired location.
［発明の目的］この発明はこのような従来の問題点を解消すべく創案さ
れたもので、３次元座標を容易に特定し得る３次元位置
検出装置を提供することを目的とする。[Object of the Invention] The present invention was devised to solve these conventional problems, and an object of the present invention is to provide a three-dimensional position detection device that can easily specify three-dimensional coordinates.
［発明の概要］この発明に係る３次元位置検出装置は、交流磁界を発生
する複数の基準コイルを用い、可動コイルによりこれら
の磁界を検出するものであり、各基準コイルの交流磁界
の周波数を異なるものとし、可動コイルで検出した磁界
の弁別を可能とし、また検出された各磁界の強さを求め
ることにより、可動コイルの各基準コイルからの距離を
求め、これに基づいて可動コイルの３次元位置を特定す
るものである。[Summary of the Invention] A three-dimensional position detection device according to the present invention uses a plurality of reference coils that generate alternating magnetic fields, and detects these magnetic fields with a moving coil, and detects the frequency of the alternating magnetic field of each reference coil. By determining the strength of each detected magnetic field, the distance of the moving coil from each reference coil is determined, and based on this, the distance of the moving coil from each reference coil is determined. It specifies the dimensional position.
［発明の実施ηす］次にこの発明に係る３次元位置検出装置の一実施例を図
面に基づいて説明する。[Implementation of the Invention] Next, an embodiment of a three-dimensional position detection device according to the present invention will be described based on the drawings.
第１図において、３次元位置検出装置は３ケの基準コイ
ル１，２．３が内蔵されたタブレット４を備え、このタ
ブレット４にはり一ド線５を介してカーソル６が接続さ
れている。In FIG. 1, the three-dimensional position detection device includes a tablet 4 in which three reference coils 1, 2.3 are built-in, and a cursor 6 is connected to the tablet 4 via a lead wire 5.
カーソル６内にはコイル７が内蔵され、カーソル６がタ
ブレット４に対して自由に動き得るので、コイル７は基
準コイル１，２．３に対して可動となっている。さらに
タブレット４にはコンピュータ８が、接続されている。A coil 7 is built into the cursor 6, and since the cursor 6 can move freely relative to the tablet 4, the coil 7 is movable relative to the reference coils 1, 2.3. Further, a computer 8 is connected to the tablet 4.
基準コイル１，２．３にはそれぞれ異なる周波数の励磁
電圧が印加され、第２図（ａ）（１））、（Ｃ）に示す
ように、各基準コイル１．２．３は異なる周波数の磁界
を発生している。Excitation voltages of different frequencies are applied to the reference coils 1, 2.3, respectively, and as shown in FIG. Generates a magnetic field.
再び第１図に基づいて説明すると、カーソル６をタブレ
ッ！・４に対して移動すると、各基準コイル１，２．３
からカーソル６までの距離が変化し、各基準コイルによ
ってコイルに誘起される電流のレベルは変化する。この
電流は基準コイル１．２．３それぞれの励磁電流の周波
数と等しい周波数であり、コイル７の誘導電流または誘
導電圧を周波数分析すれば、各基準コイル１．２．３か
らカーソル６まての距離を求め得る。To explain again based on Figure 1, move the cursor 6 to the tablet!・When moving relative to 4, each reference coil 1, 2.3
The distance from to the cursor 6 changes, and the level of current induced in the coil by each reference coil changes. This current has a frequency equal to the frequency of the excitation current of each of the reference coils 1.2.3, and if the induced current or induced voltage of the coil 7 is frequency-analyzed, the frequency from each reference coil 1.2.3 to the cursor 6 can be found. You can find the distance.
第３図は同実施例のブロック図を示すものであり、コイ
ル７が並列なフィルタ９，１０゜１１に接続されている
ことが分る。フィルタ９．１０．１１は各基準コイル１
．２．３の周波数に等しい周波数成分をそれぞれ抽出し
抽出した成分はそれぞれＡ／Ｄ変換器】２゜１３．１４
でデジタル化される。デジタル化された各成分はそれぞ
れラッチ１５．ＩＯ。FIG. 3 shows a block diagram of the same embodiment, and it can be seen that the coil 7 is connected to filters 9, 10.degree. 11 in parallel. Filters 9.10.11 each reference coil 1
．． 2. Extract frequency components equal to the frequency of 3, and convert the extracted components to A/D converters]2゜13.14
will be digitized. Each digitized component is latched 15. I.O.
１７に保持された後にマルチプレクサ１８で採込まれて
コンピュータ１９に入力される。After being held at 17, it is taken in by multiplexer 18 and input to computer 19.
コンピュータ１９は、採込まれた各周波数成分に基づい
て各基準コイルまでの距離を算出する。The computer 19 calculates the distance to each reference coil based on each frequency component taken.
ここで、例λば第４図に示すように、タブレット表面で
、左下の基準コイル３を原点とした座標を採り、コイル
１，２の座標を（Ｘ。Here, for example, as shown in FIG. 4, take the coordinates on the tablet surface with the lower left reference coil 3 as the origin, and set the coordinates of the coils 1 and 2 as (X).
Ｙ）、（２Ｘ、０）とし、かつ、タブレット表面から上
方に向かってＺ座標を採る。また各基準コイル１，２．
３からコイル７までの距離をｒｌ、ｒ２．ｒ３とし、コ
イル７の座標を、（ｘ、５’＋ ｚ）とする。このとき
、となりが得られる。Y), (2X, 0), and take the Z coordinate upward from the tablet surface. In addition, each reference coil 1, 2.
3 to the coil 7 as rl, r2. r3, and the coordinates of the coil 7 are (x, 5'+z). At this time, a neighbor is obtained.
このように、この実施例では３次元位置を極めて容易に
検出し得る。In this manner, the three-dimensional position can be detected very easily in this embodiment.
なお、基準コイル１，２．３の配置は非直線的であれば
よく、種々の態様を選択でき、また３個以上の基準コイ
ルを設けることも可能である。Note that the arrangement of the reference coils 1, 2.3 may be non-linear, and various arrangements can be selected, and it is also possible to provide three or more reference coils.
〔発明の効果］検出装置は、交流磁Ｗを発生する複数の基準コイルを用
い、可動コイルによりこれらの磁界を検出するものであ
り、各基準コイルの交流磁界の周波数を異なるものとし
、可動コイルで検出した磁界の弁別を可能とし、また検
出された各磁界の強さを求めることにより、可動コイル
の各基準コイルからの距離を求めこれに基ずいて可動コ
イルの３次元位置を特定するので、３次元座標を容易に
特定し得るという優れた効果を有する。[Effects of the Invention] The detection device uses a plurality of reference coils that generate alternating current magnetic fields W, and detects these magnetic fields with a moving coil.The frequency of the alternating magnetic field of each reference coil is made different, and the moving coil By determining the strength of each detected magnetic field, the distance of the moving coil from each reference coil can be determined, and based on this, the three-dimensional position of the moving coil can be specified. , has the excellent effect of easily specifying three-dimensional coordinates.
第一図はこの発明に係る３次元位置検出装置の一実施例
を示す斜視図、第２図（ａ）。（ｂ）、（Ｃ）は同実施例における基準コイルの磁界を
示すグラフ、第３図は同実施例のブロック図、第４図は
同実施例における基準コイルの配置を示す平面図である
。１．２，３．、、基準コイル、４．、、タブレット、５
０３．リード線、−６，、、カーソル、７０９．コイル
、８００．コンピュータ、９，１０，１１．、、フィル
タ、１２゜１７、、、ラッチ、１８．、、マルチプレク
サ、１９．、、コンピュータ。才 ２ 図ヤ４図FIG. 1 is a perspective view showing an embodiment of the three-dimensional position detection device according to the present invention, and FIG. (b) and (C) are graphs showing the magnetic field of the reference coil in the same embodiment, FIG. 3 is a block diagram of the same embodiment, and FIG. 4 is a plan view showing the arrangement of the reference coil in the same embodiment. 1.2,3. , , reference coil, 4. ,,tablet,5
03. Lead line, -6,, cursor, 709. Coil, 800. Computer, 9, 10, 11. ,,filter,12°17,,,latch,18. , ,Multiplexer, 19. ,,Computer. Sai 2 Figure Ya 4 Figure
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| JP60172960AJPS6232304A (en) | 1985-08-06 | 1985-08-06 | Three-dimensional position detecting device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60172960AJPS6232304A (en) | 1985-08-06 | 1985-08-06 | Three-dimensional position detecting device |
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