JP2018169361A5 - - Google Patents
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- JP2018169361A5 JP2018169361A5 JP2017068879A JP2017068879A JP2018169361A5 JP 2018169361 A5 JP2018169361 A5 JP 2018169361A5 JP 2017068879 A JP2017068879 A JP 2017068879A JP 2017068879 A JP2017068879 A JP 2017068879A JP 2018169361 A5 JP2018169361 A5 JP 2018169361A5
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- magnetic
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- current side
- measuring device
- detection coil
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- 238000001514 detection method Methods 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 6
- 239000004020 conductor Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 230000005389 magnetism Effects 0.000 description 1
Description
好適には、前記検出コイルが生ずる起電力は、外部磁界の変化に対して線形に変化するものである。このようにすれば、外部磁界の変化を検出コイルの起電力として正確に検出しうる。また好適には、前記磁気異方性を有する磁性体は、その電子スピンの集合が同時に変化する構造を有する。また好適には、前記演算部は、前記間欠的直流電流が小電流側から大電流側に変化したこと、および、該変化に続いて大電流側から小電流側に変化したことに基づく前記検出コイルの起電力の変化に基づいて磁気の検出を行うものである。このようにすれば、間欠的な直流電流が小電流側から大電流側に変化したこと、および、該変化に続いて大電流側から小電流側に変化したことを一対のものとして捉え、それらに基づく前記検出コイルの起電力の変化の振幅や面積を差分もしくは合計するなどした演算が可能となる。
Preferably, the electromotive force generated by the detection coil changes linearly with changes in the external magnetic field. With this configuration, the change in the external magnetic field can be accurately detected as the electromotive force of the detection coil. Further, preferably, the magnetic substance having magnetic anisotropy has a structure in which sets of electron spins thereof change at the same time. Also preferably, the arithmetic unit detects the intermittent DC current based on a change from a small current side to a large current side and a change from the large current side to a small current side following the change. The magnetism is detected based on the change in the electromotive force of the coil. In this way, the intermittent DC current changes from the small current side to the large current side, and the change from the large current side to the small current side following the change is recognized as a pair, and It is possible to perform calculation such as difference or sum of the amplitudes and areas of changes in the electromotive force of the detection coil based on the above.
また好適には、前記磁気異方性を有する磁性体は、固体、液体、気体もしくは蒸気のいずれかの態様である。このようにすれば、固体、液体、気体もしくは上記により構成される磁性体を用いて、形状に自由度を持たせてセンサヘッド部を構成することができる。さらに好適には、前記磁気異方性を有する磁性体は、微小固体の集合体である。このようにすれば、磁性体の電子スピンの集合が同時に変化する構造が実現される。 Further, preferably, the magnetic substance having magnetic anisotropy is in a form of solid, liquid, gas or vapor. With this configuration, the sensor head unit can be configured with a degree of freedom by using a solid, liquid, gas, or a magnetic substance composed of the above. More preferably, the magnetic substance having magnetic anisotropy is an aggregate of minute solids. In this way, a structure in which the set of electron spins of the magnetic material changes at the same time is realized.
Claims (9)
前記センサヘッド部は、磁気異方性を有する磁性体を有し、
前記通電部は前記磁気異方性を有する磁性体もしくは該磁気異方性を有する磁性体に沿って設けられた導線に前記間欠的な直流電流を通電するものであり、
前記検出コイルは、前記磁気異方性を有する磁性体が生ずる磁界の変動に起因して起電力を生ずるものであり、
前記間欠的な直流電流が小電流側から大電流側に変化したこと、および、大電流側から小電流側に変化したことの少なくとも一方に基づく前記検出コイルの起電力の変化に基づいて磁気の検出を行う演算部を有すること、を特徴とする磁気計測装置。 The sensor head unit, a current-carrying unit that generates an intermittent direct current for energizing the sensor head unit, a detection coil for measuring a magnetic field generated in the sensor head unit, and an electromotive force of the detection coil A magnetic measurement device including a detection unit that detects in synchronization with energization of the sensor head unit by an energization unit,
The sensor head portion has a magnetic body having magnetic anisotropy,
The energizing section energizes the intermittent direct current to a magnetic body having the magnetic anisotropy or a conductor provided along the magnetic body having the magnetic anisotropy,
The detection coil is to generate an electromotive force due to the fluctuation of the magnetic field generated by the magnetic body having the magnetic anisotropy,
Based on a change in the electromotive force of the detection coil based on at least one of the fact that the intermittent direct current has changed from the small current side to the large current side, and that the large current side has changed to the small current side. A magnetic measuring device having an arithmetic unit for performing detection.
を特徴とする請求項１に記載の磁気計測装置。The magnetic measurement device according to claim 1, wherein:
を特徴とする請求項１または２に記載の磁気計測装置。The magnetic measuring device according to claim 1 or 2, characterized in that.
を特徴とする請求項１乃至３のいずれか１に記載の磁気計測装置。 The computing unit causes the electromotive force of the detection coil based on the fact that the intermittent DC current changes from the small current side to the large current side and, following the change, changes from the large current side to the small current side. Magnetic detection based on changes in
The magnetic measuring device according to any one of claims 1 to 3 , characterized in that.
を特徴とする請求項１乃至４のいずれか１に記載の磁気計測装置。 Intermittent DC current generated by the current-carrying unit is capable of changing the time on the large current side,
The magnetic measuring device according to any one of claims 1 to 4 , characterized in that.
を特徴とする請求項１乃至５のいずれか１に記載の磁気計測装置。 The magnetic material having magnetic anisotropy is an amorphous material,
The magnetic measurement device according to any one of claims 1 to 5 , characterized in that.
を特徴とする請求項１乃至６のいずれか１に記載の磁気計測装置。 The magnetic material having the magnetic anisotropy is in any form of solid, liquid, gas or vapor,
The magnetic measurement device according to any one of claims 1 to 6 , characterized in that.
を特徴とする請求項１乃至６のいずれか１に記載の磁気計測装置。The magnetic measurement device according to any one of claims 1 to 6, characterized in that.
前記検出部は、該振動磁界発生部によって発生させられる振動磁界の振動と同期して該検出コイルの起電力を検出すること、
を特徴とする請求項１乃至８のいずれか１に記載の磁気計測装置。
An oscillating magnetic field generator that applies an oscillating magnetic field to the measurement target is further provided,
The detection unit detects the electromotive force of the detection coil in synchronization with the vibration of the oscillating magnetic field generated by the oscillating magnetic field generation unit,
The magnetic measuring device according to claim 1, wherein the magnetic measuring device is a magnetic measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017068879A JP7007700B2 (en) | 2017-03-30 | 2017-03-30 | Magnetic measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017068879A JP7007700B2 (en) | 2017-03-30 | 2017-03-30 | Magnetic measuring device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2018169361A JP2018169361A (en) | 2018-11-01 |
| JP2018169361A5 true JP2018169361A5 (en) | 2020-05-07 |
| JP7007700B2 JP7007700B2 (en) | 2022-01-25 |
Family
ID=64017924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017068879A Active JP7007700B2 (en) | 2017-03-30 | 2017-03-30 | Magnetic measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7007700B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019184240A (en) * | 2018-04-02 | 2019-10-24 | 愛知製鋼株式会社 | Magnetic detector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58218644A (en) * | 1982-06-14 | 1983-12-19 | Sumitomo Metal Ind Ltd | Method and apparatus for testing surface flaw of metallic material |
| JP5429717B2 (en) | 2011-03-07 | 2014-02-26 | 国立大学法人名古屋大学 | Magnetic detector |
| JP2012198038A (en) | 2011-03-18 | 2012-10-18 | Yokogawa Electric Corp | Magnetic substance member and manufacturing method thereof |
| JP6281677B2 (en) | 2013-03-08 | 2018-02-21 | 国立大学法人名古屋大学 | Magnetic measuring device |
-
2017
- 2017-03-30 JP JP2017068879A patent/JP7007700B2/en active Active
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