JPS6433072U - - Google Patents
Info
- Publication number
- JPS6433072U JPS6433072U JP12699187U JP12699187U JPS6433072U JP S6433072 U JPS6433072 U JP S6433072U JP 12699187 U JP12699187 U JP 12699187U JP 12699187 U JP12699187 U JP 12699187U JP S6433072 U JPS6433072 U JP S6433072U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- rotating magnetic
- rotating
- coil
- current
- 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
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図は本考案に係る回転数検出器の一実施例
を示す構成ブロツク図、第２図は第１図装置の動
作を説明するためのタイムチヤート、第３図は第
１図装置の動作を説明するための説明図、第４図
は第１図装置の変形例の動作を説明するための説
明図、第５図は回転数検出器の一従来例を示す構
成図、第６図は回転数検出器の第２の従来例を示
す要部構成図、第７図〜第９図は第７図装置の動
作を説明するための説明図である。
１……回転体、２，２０……磁石、３……磁気
バブル素子、４１，４２……コイル、５……測定
手段、OA→……第１の回転磁界、AB→……第２の
回転磁界、Ｄ……転送パターン、Ｄ２……検出器
。
Fig. 1 is a configuration block diagram showing one embodiment of the rotation speed detector according to the present invention, Fig. 2 is a time chart for explaining the operation of the device shown in Fig. 1, and Fig. 3 is an operation of the device shown in Fig. 1. FIG. 4 is an explanatory diagram for explaining the operation of a modified example of the device shown in FIG. 1, FIG. 5 is a configuration diagram showing a conventional example of a rotation speed detector, and FIG. A main part configuration diagram showing a second conventional example of a rotation speed detector, and FIGS. 7 to 9 are explanatory diagrams for explaining the operation of the device shown in FIG. DESCRIPTION OF SYMBOLS 1...Rotating body, 2, 20...Magnet, 3...Magnetic bubble element, 41, 42...Coil, 5...Measuring means, OA→...First rotating magnetic field, AB→...Second Rotating magnetic field, D... transfer pattern, D2... detector.
Claims (1)
させ、この第１の回転磁界によつて磁気バブル素
子の磁気バブルを移動させるとともに、コイルに
電流を流して第２の回転磁界を発生し、転送パタ
ーン上の前記磁気バブルを検出器まで移動するに
要する前記第２の回転磁界の回転数から磁気バブ
ルの位置を検出し、この位置から前記回転体の回
転数を測定する回転数検出器において、 コイルに電流を流す直前に第１の回転磁界を測
定する測定手段を備え、この測定手段の出力に対
応して前記第１の回転磁界を打消すための電流を
コイルに重畳するように構成したことを特徴とす
る回転数検出器。[Claims for Utility Model Registration] A first rotating magnetic field is generated by attaching a magnet to a rotating body, and the first rotating magnetic field moves a magnetic bubble of a magnetic bubble element, and at the same time, a current is passed through a coil. Generate a second rotating magnetic field, detect the position of the magnetic bubble from the number of rotations of the second rotating magnetic field required to move the magnetic bubble on the transfer pattern to the detector, and rotate the rotating body from this position. The rotational speed detector for measuring the number of rotations is provided with a measuring means for measuring a first rotating magnetic field immediately before passing a current through the coil, and a measuring means for canceling the first rotating magnetic field in response to the output of the measuring means. A rotation speed detector characterized in that it is configured to superimpose a current on a coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12699187U JPH051769Y2 (en) | 1987-08-21 | 1987-08-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12699187U JPH051769Y2 (en) | 1987-08-21 | 1987-08-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6433072U true JPS6433072U (en) | 1989-03-01 |
| JPH051769Y2 JPH051769Y2 (en) | 1993-01-18 |
Family
ID=31379008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12699187U Expired - Lifetime JPH051769Y2 (en) | 1987-08-21 | 1987-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051769Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0395961U (en) * | 1990-01-23 | 1991-09-30 | ||
| WO2009031557A1 (en) * | 2007-09-04 | 2009-03-12 | Alps Electric Co., Ltd. | Angle sensor |
| JP2010008359A (en) * | 2008-06-30 | 2010-01-14 | Furukawa Electric Co Ltd:The | Rotating angle detecting apparatus |
-
1987
- 1987-08-21 JP JP12699187U patent/JPH051769Y2/ja not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0395961U (en) * | 1990-01-23 | 1991-09-30 | ||
| WO2009031557A1 (en) * | 2007-09-04 | 2009-03-12 | Alps Electric Co., Ltd. | Angle sensor |
| JP2010008359A (en) * | 2008-06-30 | 2010-01-14 | Furukawa Electric Co Ltd:The | Rotating angle detecting apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH051769Y2 (en) | 1993-01-18 |
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