JPS61226608A - Horizontal and inclination angle detecting device using magnetic fluid - Google Patents
Horizontal and inclination angle detecting device using magnetic fluidInfo
- Publication number
- JPS61226608A JPS61226608A JP6802885A JP6802885A JPS61226608A JP S61226608 A JPS61226608 A JP S61226608A JP 6802885 A JP6802885 A JP 6802885A JP 6802885 A JP6802885 A JP 6802885A JP S61226608 A JPS61226608 A JP S61226608A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- horizontal
- magnetic
- detecting
- detecting device
- 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.)
- Pending
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は磁性流体を用いることにより，物体の水平およ
びあらゆる方向の傾斜角の検出を行うことができる検出
装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detection device that can detect the horizontal and inclination angles of objects in all directions by using magnetic fluid.
従来公知の角度検出装置はポテンシオメータのように抵
抗体等の固体を用いたものであつた。従来方式では絶対
的な水平を検出することはできず，あらかじめ与えられ
た水平の位置からの角度のみ検出することができ，傾斜
の方向が多岐にわたる場合には複数の検出装置を必要と
した。加えて，気中あるいは液中で自由に動作する物体
の姿勢を水平に保持したり，一定の傾斜角で保持したり
する場合に必要となる水平および傾斜角検出においては
，従来方式では実施困難であるが，本発明の装置を用い
れば十分可能となる。Conventionally known angle detection devices use a solid body such as a resistor, like a potentiometer. Conventional methods cannot detect absolute horizontality, but can only detect angles from a predetermined horizontal position, and require multiple detection devices when the tilt direction is diverse. In addition, it is difficult to detect horizontal and inclination angles using conventional methods, which is necessary when maintaining the posture of an object moving freely in air or liquid horizontally or at a constant inclination angle. However, using the device of the present invention makes it possible.
以下，本発明の磁性流体を用いた水平および傾斜角検出
装置の一実施例を図面を用いて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a horizontal and tilt angle detection device using a magnetic fluid according to the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例を示す。図において１は球形
の薄肉の容器である。２は１の容器内に封入された磁性
流体である。本発明では磁性流体の液体としての性質を
利用するが，通常状態では磁性流体の粘性が大きい時磁
性的性質は強いが，粘性が小さい時は磁性的性質も弱く
なるため，適切な粘性および磁性的性質を考えた上で使
用しなければならない。定常状態では磁性流体の液面は
水平に保たれる。FIG. 1 shows an embodiment of the invention. In the figure, 1 is a spherical thin-walled container. 2 is a magnetic fluid sealed in the container 1; The present invention utilizes the properties of magnetic fluid as a liquid, but under normal conditions, when the viscosity of the magnetic fluid is high, the magnetic properties are strong, but when the viscosity is low, the magnetic properties are also weak. It must be used after considering its physical characteristics. In steady state, the liquid level of the magnetic fluid remains horizontal.
第２図は第１図の装置を底面より見た状態を示したもの
であるが，説明上第１図と第２図を対応させて考える。Although FIG. 2 shows the apparatus shown in FIG. 1 viewed from the bottom, for the sake of explanation, FIG. 1 and FIG. 2 will be considered in correspondence.
本検出装置には１つの励磁コイルと３つの検出コイルが
ある。第１図の３は底面に配した励磁コイルであり第２
図の６に対応する。This detection device has one excitation coil and three detection coils. 3 in Figure 1 is the excitation coil placed on the bottom.
Corresponds to 6 in the figure.
第２図の７１，７２，７３は３つの検出コイルを示し，
各々中心より１２０°づつずれた位置に配してある。７
１，７２は第１図の４１，４２に対応するが，７３に対
応するコイルは第１図では便宜上省略してある。第１図
の５は励磁コイルと検出コイル間に配した強磁性体のコ
アであり，磁束が通るための磁路となる。５は第２図の
８に対応する。71, 72, 73 in Fig. 2 indicate three detection coils,
Each is placed at a position offset by 120 degrees from the center. 7
1 and 72 correspond to 41 and 42 in FIG. 1, but the coil corresponding to 73 is omitted in FIG. 1 for convenience. 1 is a ferromagnetic core placed between the excitation coil and the detection coil, and serves as a magnetic path through which magnetic flux passes. 5 corresponds to 8 in FIG.
第２図において，端子６０１と６０２の間に交流電源を
接続して励磁コイル６を交流励磁すれば，磁性流体と強
磁性体コアがつくる磁路内を銷交する磁束が生じ，検出
コイルの端子７１１と７１２の間，７２１と７２２の間
，７３１と７３２の間に電圧が生じる。検出器本体が水
平であれば，磁性流体の液面は水平になり，各々の検出
コイルに対する磁路は等しくなり，従つて３つの検出コ
イルに発生する電圧は全て等しくなる。換言すれば，３
つの検出コイルの電圧が全て等しくなる時は，検出器本
体が水平になつている事であるとの検出結果を得ること
ができる。In Fig. 2, if an AC power source is connected between terminals 601 and 602 and the excitation coil 6 is excited with AC, a magnetic flux is generated that crosses within the magnetic path created by the magnetic fluid and the ferromagnetic core, and the detection coil Voltages are generated between terminals 711 and 712, between 721 and 722, and between 731 and 732. If the detector body is horizontal, the liquid level of the magnetic fluid will be horizontal, the magnetic paths for each detection coil will be equal, and therefore the voltages generated in all three detection coils will be equal. In other words, 3
When the voltages of the two detection coils are all equal, a detection result indicating that the detector body is horizontal can be obtained.
第３図は検出器本体が鉛直軸よりθ傾いた場合を示す。FIG. 3 shows a case where the main body of the detector is tilted by θ with respect to the vertical axis.
この時は，磁性流体の液面は水平に保持されるが，磁性
流体と強磁性体コアでつくられる磁路が水平の場合とは
異なり，３つの検出コイルで検出される電圧はθに応じ
て変化したものが得られる。検出コイル付３つ配してあ
るため，どのような方向へ傾向いても，その傾向きに応
じて３つの電圧が検出コイルより得られ，その各々の電
圧値により傾斜角と傾斜の方向を同時に知ることができ
る。本検出器では単体の検出器で傾斜角と傾斜の方向を
得ることができ，従来方式に比べ，大きな特徴となつて
いる。At this time, the liquid level of the magnetic fluid is held horizontally, but unlike when the magnetic path created by the magnetic fluid and the ferromagnetic core is horizontal, the voltage detected by the three detection coils changes according to θ. You will get a changed result. Since there are three detection coils installed, no matter what direction the direction is, three voltages can be obtained from the detection coils depending on the tendency, and each voltage value can be used to simultaneously determine the angle of inclination and the direction of inclination. You can know. This detector is able to obtain the tilt angle and direction with a single detector, which is a major feature compared to conventional methods.
液は動的な動きの場合，その液面が液体の粘性に応じて
波打つことがある。その事は本検出装置のように動作中
の物体の水平および傾斜角を検出する際の誤差の原因と
なり得る。過渡的な液面の波打ちを抑えるため，励磁コ
イルおよび検出コイルに一時的に電圧を加え，磁性流体
中に強目の磁界を発生せしめ，磁性流体の粘性を強めて
液面の波打ちを抑制することができる。液面が定常状態
に達した後，新めて水平および傾斜角を検出すれば過渡
状態での検出を短時間で行うことができる。When a liquid moves dynamically, its surface may ripple depending on the viscosity of the liquid. This can cause errors when detecting the horizontal and inclination angles of an object in motion like the present detection device. In order to suppress transient undulations on the liquid surface, voltage is temporarily applied to the excitation coil and detection coil to generate a strong magnetic field in the magnetic fluid, increasing the viscosity of the magnetic fluid and suppressing undulations on the liquid surface. be able to. If the horizontal and tilt angles are detected anew after the liquid level reaches a steady state, transient state detection can be performed in a short time.
本発明により，磁性流体の液体性を利用することにより
絶対的な水平を検出することができ，加えてあらゆる方
向への傾向きに対して傾斜角と傾斜の方向を検出できる
検出装置が実施できた。また液面の波打ちを極力抑える
ことも可能で，過渡状態での検出ができ，実用上の効果
は高い。According to the present invention, it is possible to implement a detection device that can detect absolute horizontality by utilizing the liquid nature of magnetic fluid, and can also detect tilt angles and directions of tilt in any direction. Ta. It is also possible to suppress undulation of the liquid surface as much as possible, allowing detection in transient conditions, and is highly effective in practical use.
第１図は本発明の磁性流体を用いた水平および傾斜角検
出装置の一実施例を示す。第２図は第１図に示す装置を
底面より見た場合の図を示す。第３図は第１図の場合よ
り装置本体を鉛直軸よりθ傾斜させた場合の状態を示す
。
１ 容器
２ 磁性流体
３ 励磁コイル
４１，４２ 検出コイル
５ 強磁性体コア
６ 励磁コイル
６０１，６０２ 端子
７１，７２，７３ 検出コイル
７１１，７１２ 端子
７２１，７２２ 端子
７３１，７３２ 端子FIG. 1 shows an embodiment of a horizontal and tilt angle detection device using a magnetic fluid according to the present invention. FIG. 2 shows a view of the apparatus shown in FIG. 1 from the bottom. FIG. 3 shows a state in which the main body of the apparatus is tilted by θ from the vertical axis compared to the case of FIG. 1 Container 2 Magnetic fluid 3 Excitation coil 41, 42 Detection coil 5 Ferromagnetic core 6 Excitation coil 601, 602 Terminal 71, 72, 73 Detection coil 711, 712 Terminal 721, 722 Terminal 731, 732 Terminal
Claims (1)
励磁コイルと検出コイルを配した装置において、磁性流
体の液体である性質を利用して、水平およびあらゆる方
向への傾斜角に対する角度変化量を電気信号として取り
出し、加えて磁性流体の粘性を励磁コイルおよび検出コ
イルに流す電流値により制御することができる水平およ
び傾斜角検出装置。In the inner or outer part of the container containing the magnetic fluid,
In a device equipped with an excitation coil and a detection coil, the liquid property of the magnetic fluid is used to extract the amount of angular change with respect to the horizontal and all directions as an electrical signal, and in addition, the viscosity of the magnetic fluid is detected by the excitation coil. and a horizontal and tilt angle detection device that can be controlled by the current value passed through the detection coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6802885A JPS61226608A (en) | 1985-03-31 | 1985-03-31 | Horizontal and inclination angle detecting device using magnetic fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6802885A JPS61226608A (en) | 1985-03-31 | 1985-03-31 | Horizontal and inclination angle detecting device using magnetic fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61226608A true JPS61226608A (en) | 1986-10-08 |
Family
ID=13361943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6802885A Pending JPS61226608A (en) | 1985-03-31 | 1985-03-31 | Horizontal and inclination angle detecting device using magnetic fluid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61226608A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63236917A (en) * | 1987-03-25 | 1988-10-03 | Matsumoto Yushi Seiyaku Kk | Tilt angle sensor |
| JPH03142315A (en) * | 1989-10-30 | 1991-06-18 | Tokin Corp | Inclination sensor for detecting total inclination angles in omnibus direction |
| CN100465582C (en) * | 2005-08-19 | 2009-03-04 | 潘舒伟 | Automatic levelling base for level instrument and theodolite |
-
1985
- 1985-03-31 JP JP6802885A patent/JPS61226608A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63236917A (en) * | 1987-03-25 | 1988-10-03 | Matsumoto Yushi Seiyaku Kk | Tilt angle sensor |
| JPH03142315A (en) * | 1989-10-30 | 1991-06-18 | Tokin Corp | Inclination sensor for detecting total inclination angles in omnibus direction |
| CN100465582C (en) * | 2005-08-19 | 2009-03-04 | 潘舒伟 | Automatic levelling base for level instrument and theodolite |
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