JPH02141815U - - Google Patents
Info
- Publication number
- JPH02141815U JPH02141815U JP5122689U JP5122689U JPH02141815U JP H02141815 U JPH02141815 U JP H02141815U JP 5122689 U JP5122689 U JP 5122689U JP 5122689 U JP5122689 U JP 5122689U JP H02141815 U JPH02141815 U JP H02141815U
- Authority
- JP
- Japan
- Prior art keywords
- zero point
- point detection
- magnetic
- code section
- magnetoresistive element
- 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
- 238000001514 detection method Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図は本考案の第１の実施例に係わる構成を
示す斜視図、第２図は同実施例の回路図、第３図
及び第９図はそれぞれ同実施例の動作を説明する
ための特性図、第４図は本考案の第２の実施例に
係わる平面図、第５図は従来の磁気エンコーダの
説明するための図、第６図は従来の零点検出装置
の回路図、第７図及び第８図はそれぞれは従来の
零点検出装置の動作を説明するための特性図であ
る。
１０…零点検出用磁気符号部、１２…磁電変換
センサ、１４，１５，２１，２２…磁気抵抗素子
、２０…絶縁基板、２３…永久磁石、３０，３１
…電流通路。
FIG. 1 is a perspective view showing the configuration of a first embodiment of the present invention, FIG. 2 is a circuit diagram of the same embodiment, and FIGS. 3 and 9 are diagrams for explaining the operation of the same embodiment. 4 is a plan view of the second embodiment of the present invention, FIG. 5 is a diagram for explaining a conventional magnetic encoder, FIG. 6 is a circuit diagram of a conventional zero point detection device, and FIG. 8 and 8 are characteristic diagrams for explaining the operation of the conventional zero point detection device, respectively. DESCRIPTION OF SYMBOLS 10... Magnetic code part for zero point detection, 12... Magnetoelectric conversion sensor, 14, 15, 21, 22... Magnetoresistive element, 20... Insulating substrate, 23... Permanent magnet, 30, 31
...Current path.
Claims (1)
符号部を検出するインクリメンタル方式の磁気エ
ンコーダの零点検出装置において、 前記零点検出用磁気符号部に対向する第１の磁
気抵抗素子及び前記第１の磁気抵抗に接続した第
２の磁気抵抗素子を備え、前記第２の磁気抵抗素
子が前記零点検出用磁気符号部の磁界の影響を受
けない状態で前記第１及び第２の磁気抵抗素子を
接続した回路の中間端子から前記零点検出信号を
出力する磁電変換センサ回路と、前記第１の磁気
抵抗素子に対する前記零点検出用磁気符号部の磁
界にバイアス磁界を作用させるための磁性部材と
を具備したことを特徴とするインクリメンタル方
式の磁気エンコーダの零点検出装置。[Claims for Utility Model Registration] In a zero point detection device for an incremental magnetic encoder that detects a magnetic code section for zero point detection provided in a magnetic code recording medium, a first magnetic field opposite to the magnetic code section for zero point detection; a resistance element and a second magnetoresistive element connected to the first magnetoresistive element, wherein the second magnetoresistive element is not influenced by the magnetic field of the zero point detection magnetic code section; a magnetoelectric conversion sensor circuit that outputs the zero point detection signal from an intermediate terminal of a circuit connecting two magnetoresistive elements; and a bias magnetic field to act on the magnetic field of the zero point detection magnetic code section for the first magnetoresistive element. 1. A zero point detection device for an incremental magnetic encoder, comprising: a magnetic member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989051226U JPH075371Y2 (en) | 1989-04-28 | 1989-04-28 | Zero-point detection device for incremental magnetic encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989051226U JPH075371Y2 (en) | 1989-04-28 | 1989-04-28 | Zero-point detection device for incremental magnetic encoder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02141815U true JPH02141815U (en) | 1990-11-29 |
| JPH075371Y2 JPH075371Y2 (en) | 1995-02-08 |
Family
ID=31570469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989051226U Expired - Fee Related JPH075371Y2 (en) | 1989-04-28 | 1989-04-28 | Zero-point detection device for incremental magnetic encoder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075371Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61161417A (en) * | 1985-01-11 | 1986-07-22 | Sankyo Seiki Mfg Co Ltd | Index signal detector |
-
1989
- 1989-04-28 JP JP1989051226U patent/JPH075371Y2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61161417A (en) * | 1985-01-11 | 1986-07-22 | Sankyo Seiki Mfg Co Ltd | Index signal detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH075371Y2 (en) | 1995-02-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |