JPS6425705U - - Google Patents
Info
- Publication number
- JPS6425705U JPS6425705U JP11958787U JP11958787U JPS6425705U JP S6425705 U JPS6425705 U JP S6425705U JP 11958787 U JP11958787 U JP 11958787U JP 11958787 U JP11958787 U JP 11958787U JP S6425705 U JPS6425705 U JP S6425705U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- amorphous ferromagnetic
- generating element
- field generating
- coil
- 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
- 230000005291 magnetic effect Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000005294 ferromagnetic effect Effects 0.000 claims description 4
- 239000003302 ferromagnetic material Substances 0.000 claims 3
- 239000000463 material Substances 0.000 claims 1
- 230000035699 permeability Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 1
Description
第１図はこの考案の一実施例を示す概略構成図
、第２図は同じくそのアモルフアス強磁性体薄帯
の設置部分を拡大して示す斜視図、第３図は同じ
く第１図の変位検出装置の主要部の構造を示す分
解斜視図、第４図は自己インダクタンスを検出す
る回路の一例を示す回路図、第５図はこの考案を
適用した変位検出装置によつて測定した距離ｘと
検出用コイルの自己インダクタンスＬとの関係を
示す線図、第６図は磁心内に発生する反磁界を説
明するための説明図、第７図はこの考案の他の実
施例を示す第１図と同様な概略構成図である。
１……シールドケース、２……アモルフアス強
磁性体薄帯、３……検出用コイル、４……検出回
路、５……測定対象物、６……小磁石（磁界発生
素子）、２３，２３′……リターンパス部材。
Figure 1 is a schematic configuration diagram showing an embodiment of this invention, Figure 2 is an enlarged perspective view of the installed part of the amorphous ferromagnetic thin strip, and Figure 3 is the displacement detection shown in Figure 1. An exploded perspective view showing the structure of the main part of the device, Fig. 4 is a circuit diagram showing an example of a circuit for detecting self-inductance, and Fig. 5 shows the distance x measured and detected by the displacement detection device to which this invention is applied. Fig. 6 is an explanatory diagram for explaining the demagnetizing field generated within the magnetic core, and Fig. 7 is a diagram showing the relationship between the self-inductance L of the coil and Fig. It is a similar schematic block diagram. 1... Shield case, 2... Amorphous ferromagnetic ribbon, 3... Detection coil, 4... Detection circuit, 5... Measurement object, 6... Small magnet (magnetic field generating element), 23, 23 '...Return path member.
Claims (1)
発生素子との相対距離が測定対象物の変位によつ
て変化するように配置される短冊状のアモルフア
ス強磁性体薄帯と、該アモルフアス強磁性体薄帯
を磁心とする検出用コイルと、該コイルに一定の
微小交流電流を流してその自己インダクタンスを
検出する回路とを備え、前記アモルフアス強磁性
体薄帯の前記磁界発生素子から遠い方の端部に高
透磁率材よりなるリターンパス部材を設け、前記
磁界発生素子とアモルフアス強磁性体薄帯との相
対距離の変化による前記検出用コイルへの印加磁
界の変化を該コイルの自己インダクタンスの変化
に変換して検出することにより、測定対象物の変
位を検出するようにしたことを特徴とする変位検
出装置。 A magnetic field generating element that generates a constant magnetic field, a strip-shaped amorphous ferromagnetic thin strip arranged so that the relative distance between the magnetic field generating element and the magnetic field generating element changes depending on the displacement of an object to be measured, and the amorphous ferromagnetic material. The amorphous ferromagnetic material thin strip is provided with a detection coil having a magnetic core as its magnetic core, and a circuit for detecting the self-inductance of the amorphous ferromagnetic material thin strip by passing a constant minute alternating current through the coil. A return path member made of a high magnetic permeability material is provided at the end, and changes in the magnetic field applied to the detection coil due to changes in the relative distance between the magnetic field generating element and the amorphous ferromagnetic ribbon are controlled by the self-inductance of the coil. 1. A displacement detection device, characterized in that the displacement of an object to be measured is detected by converting it into a change and detecting it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11958787U JPS6425705U (en) | 1987-08-04 | 1987-08-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11958787U JPS6425705U (en) | 1987-08-04 | 1987-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6425705U true JPS6425705U (en) | 1989-02-13 |
Family
ID=31364946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11958787U Pending JPS6425705U (en) | 1987-08-04 | 1987-08-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6425705U (en) |
-
1987
- 1987-08-04 JP JP11958787U patent/JPS6425705U/ja active Pending
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