JPS63129817U - - Google Patents
Info
- Publication number
- JPS63129817U JPS63129817U JP2219487U JP2219487U JPS63129817U JP S63129817 U JPS63129817 U JP S63129817U JP 2219487 U JP2219487 U JP 2219487U JP 2219487 U JP2219487 U JP 2219487U JP S63129817 U JPS63129817 U JP S63129817U
- Authority
- JP
- Japan
- Prior art keywords
- zero point
- point detection
- track
- magnetoresistive element
- magnetic
- 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
- 238000001514 detection method Methods 0.000 claims description 8
- 239000000696 magnetic material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- 229920006395 saturated elastomer Polymers 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図は、本考案の磁気エンコーダの一実施例
の構成図であり、第２図ないし第４図は、零点検
出用トラツクとこれに対向するＭＲ素子の間隔を
変えてＭＲ素子で検出される磁界の強さを示す図
であつて、第２図は４０μｍ間隔、第３図は１０
０μｍ間隔、第４図は１６０μｍ間隔であり、第
５図は、従来の磁気エンコーダの構成図である。
１：磁性体、２：スケールトラツク、３：零点
検出用トラツク、４，５：ＭＲ素子、ｄ１：スケ
ールトラツクとこれに対向するＭＲ素子の間隔、
ｄ２：零点検出用トラツクとこれに対向するＭＲ
素子の間隔。
FIG. 1 is a configuration diagram of an embodiment of the magnetic encoder of the present invention, and FIGS. 2 to 4 show the zero point detection track and the MR element facing the zero point detected by changing the distance between the track and the MR element. Figure 2 shows the strength of the magnetic field, with 40μm intervals in Figure 3 and 10
The spacing is 0 .mu.m, and the spacing in FIG. 4 is 160 .mu.m. FIG. 5 is a block diagram of a conventional magnetic encoder. 1: Magnetic material, 2: Scale track, 3: Zero point detection track, 4, 5: MR element, d 1 : Distance between the scale track and the MR element facing it,
d2 : Zero point detection track and MR opposing it
element spacing.
Claims (1)
に記録したスケールトラツクと、１対のＮ極とＳ
極を零点として記録した零点検出用トラツクとを
配設し、前記スケールトラツクおよび前記零点検
出用トラツクに磁気抵抗効果素子を対向させてそ
れぞれ配設し、前記磁気抵抗効果素子の抵抗値の
変化から前記磁性体の移動を検出する磁気エンコ
ーダにおいて、前記零点検出用トラツクとこれに
対向する磁気抵抗効果素子との間隔を、前記スケ
ールトラツクとこれに対向する磁気抵抗効果素子
との間隔より広くしたことを特徴とする磁気エン
コーダ。 (2) 前記零点検出用トラツクとこれに対向する
磁気抵抗効果素子との間隔を、前記零点検出用ト
ラツクに記録された１対のＮ極とＳ極による磁界
で対向した位置にある前記磁気抵抗効果素子が磁
気飽和する範囲内で広くしたことを特徴とする実
用新案登録請求の範囲第１項記載の磁気エンコー
ダ。[Claims for Utility Model Registration] (1) A scale track in which a plurality of N and S poles are continuously recorded alternately on a magnetic material, and a pair of N and S poles.
A zero point detection track in which a pole is recorded as a zero point is arranged, and a magnetoresistive element is arranged to face the scale track and the zero point detection track, respectively, and from a change in the resistance value of the magnetoresistive element. In the magnetic encoder for detecting the movement of the magnetic body, the distance between the zero point detection track and the magnetoresistive element facing it is wider than the distance between the scale track and the magnetoresistive element facing it. A magnetic encoder featuring: (2) The distance between the zero point detection track and the opposing magnetoresistive element is determined by the magnetoresistive elements located at opposing positions in a magnetic field created by a pair of north and south poles recorded on the zero point detection track. The magnetic encoder according to claim 1, wherein the magnetic encoder is widened within a range in which the effect element is magnetically saturated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2219487U JPS63129817U (en) | 1987-02-18 | 1987-02-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2219487U JPS63129817U (en) | 1987-02-18 | 1987-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63129817U true JPS63129817U (en) | 1988-08-24 |
Family
ID=30819345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2219487U Pending JPS63129817U (en) | 1987-02-18 | 1987-02-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63129817U (en) |
-
1987
- 1987-02-18 JP JP2219487U patent/JPS63129817U/ja active Pending
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