JPS6235239Y2 - - Google Patents
Info
- Publication number
- JPS6235239Y2 JPS6235239Y2 JP1985057669U JP5766985U JPS6235239Y2 JP S6235239 Y2 JPS6235239 Y2 JP S6235239Y2 JP 1985057669 U JP1985057669 U JP 1985057669U JP 5766985 U JP5766985 U JP 5766985U JP S6235239 Y2 JPS6235239 Y2 JP S6235239Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- sensitive element
- external magnetic
- coercive force
- magnetically sensitive
- 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.)
- Expired
Links
- 230000005291 magnetic effect Effects 0.000 claims description 41
- 239000002131 composite material Substances 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 5
- 239000003302 ferromagnetic material Substances 0.000 claims description 4
- 230000005294 ferromagnetic effect Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
Landscapes
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Electronic Switches (AREA)
Description
【考案の詳細な説明】
本考案は、電流変化に伴う磁界や移動磁石によ
る磁界の変化を瞬時に検出して、被制御回路を動
作させる装置に関するもである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that instantaneously detects changes in a magnetic field caused by a change in current or a change in a magnetic field caused by a moving magnet, and operates a controlled circuit.
すなわち本考案の回路制御装置は、保磁力の大
きい部分と、保磁力の小さい部分とを有する一軸
性の磁気異方性を備えた複合強磁性体から成る感
磁要素と、その近くに配置された検出コイルと、
この検出コイルからのパルス起電力を半導体制御
素子のゲートに対する入力信号として用い、被制
御回路を開閉するようにしたものである。 That is, the circuit control device of the present invention includes a magneto-sensitive element made of a composite ferromagnetic material with uniaxial magnetic anisotropy and a portion with a large coercive force and a portion with a small coercive force, and a magnetically sensitive element arranged near the magnetically sensitive element. a detection coil,
The pulse electromotive force from this detection coil is used as an input signal to the gate of the semiconductor control element to open and close the controlled circuit.
本考案には外部磁界の鎖交に即応してパルス起
電力を発生する特殊な感磁要素を用いるので、ま
ず以下に感磁要素の概要を説明する。 Since the present invention uses a special magnetically sensitive element that generates a pulsed electromotive force in response to the linkage of an external magnetic field, an outline of the magnetically sensitive element will first be explained below.
例えばバイカロイ（Fe38％−Co52％−V10
％）等の合金や非晶質の強磁性線に、機械的なひ
ねりを加えると、その外周部ほど必然的に多くひ
ねられ、線心部付近ほどひねりが小さいので、外
周部と線心部とで磁気特性の異なる強磁性線とな
る。すなわち外周部に近いぼど比較的保磁力の小
さい部分が形成され、線心部付近に比較的保磁力
の大きい部分を保有する複合磁性線となり、かつ
全体として線軸方向に一軸磁気異方性を備えるよ
うに処理された、いわゆる感磁要素になる。 For example, Baicaloy (Fe38%-Co52%-V10
When a mechanical twist is applied to an alloy or amorphous ferromagnetic wire such as It becomes a ferromagnetic wire with different magnetic properties. In other words, a composite magnetic wire is formed in which a portion with a relatively small coercive force is formed near the outer periphery and a portion with a relatively large coercive force near the core, and the wire as a whole exhibits uniaxial magnetic anisotropy in the direction of the wire axis. It becomes a so-called magnetically sensitive element that has been treated to have a magnetically sensitive element.
この場合、一般の磁性体では例えばパーマロイ
（Fe−Ni）の如き合金等は、ひねりを加えると上
述のバイカロイとは逆に保磁力を増大する傾向を
もつものが多く、また磁気的性状も非常に異な
る。 In this case, many common magnetic materials, such as alloys such as permalloy (Fe-Ni), tend to increase their coercive force when twisted, contrary to the above-mentioned Vicaloy, and their magnetic properties are also very high. Different.
また複合磁性線の別の製作法として、線心部を
構成する強磁性線に対し、その外周部を比較的保
磁力の小さい異種の強磁性体で包被させて成る、
いわゆるグラツドワイヤに感磁要素の性能を具備
させることもできる。 Another method for producing a composite magnetic wire is to cover the outer periphery of the ferromagnetic wire that makes up the wire core with a different type of ferromagnetic material that has a relatively small coercive force.
It is also possible to provide so-called glad wires with the functionality of magnetically sensitive elements.
いずれにしても複合磁性特性を有する感磁要素
は、その比較的保磁力の小さい外周部分の磁化方
向のみを、外部から作用させる弱い磁界の方向に
従つて正方向（例えば線軸に対して右方向）か負
方向（左方向）かの何れかに転位させておくこと
ができる。そしてこの場合、保磁力の大きい線心
部分の配向磁気の方向には殊更に急速に転位でき
るように処理されている。 In any case, a magneto-sensitive element with composite magnetic properties is configured to change the magnetization direction of only the outer peripheral portion, which has a relatively small coercive force, in the positive direction (for example, in the right direction with respect to the wire axis) according to the direction of the weak magnetic field applied from the outside. ) or in the negative direction (to the left). In this case, the wire core is processed so that it can be dislocated more rapidly in the direction of the orientation magnetism in the core portion having a large coercive force.
このような性状を有する感磁要素に対し、いつ
たん正方向（右方向）の強い第１の外部磁界H1
を鎖交させてその全体を右方向に配向磁化してお
く。 When a magnetically sensitive element having such properties is exposed to a strong first external magnetic field H 1 in the positive direction (rightward direction)
are interlinked and the whole is oriented and magnetized in the right direction.
いまこれに弱い第２の外部磁界H2を左方向に
作用させると、外周部分のみが左方向に磁化され
る。そしてこの状態は第２の外部磁界H2が消去
されても安定に保持しているという特質がある。 Now, if a weak second external magnetic field H 2 is applied to this to the left, only the outer peripheral portion will be magnetized to the left. This state has the characteristic that it remains stable even when the second external magnetic field H2 is erased.
この状態の時に第３の外部磁界H3が右方向に
作用すると、外周部分の磁化方向のみが反転する
が、この時の反転速度は外部磁界H3の変化割合
には殆ど無関係に極めて急速である。この殊更に
急速な転位による磁束変化にもとずいて、急峻で
大きなパルス起電力が誘発される。 When the third external magnetic field H3 acts in the right direction in this state, only the magnetization direction of the outer circumferential portion is reversed, but the reversal speed at this time is extremely rapid, almost unrelated to the rate of change of the external magnetic field H3 . be. Based on the magnetic flux change caused by this particularly rapid dislocation, a steep and large pulse electromotive force is induced.
この場合、感磁要素に対して弱い左方向の磁界
H2の次に右方向の磁界H3を作用させることが必
要条件であつて、磁界H3のみあるいは磁界H2の
みを連続して作用させたような場合には急峻なパ
ルス起電力を誘発させることができない。 In this case, the weak left magnetic field with respect to the magnetically sensitive element
It is a necessary condition to apply a magnetic field H 3 in the right direction next to H 2 , and if only the magnetic field H 3 or only the magnetic field H 2 is applied continuously, a steep pulse electromotive force will be induced. I can't do it.
この感磁要素の代わりに全体の保磁力の小さい
ような通常の強磁性体を用いたとすると、この場
合には外部磁界H2またはH3の作用方向にその都
度呼応していずれかの磁化方向に転位する。しか
しながらその反転速度は外部磁界の変化割合に
ほゞ依存する。従つて例えば外部磁界が比較的低
周波領域の交流電流によつて発生されるものであ
るとか、移動磁石による作用磁界であれば、磁化
反転は必然的に緩慢となる。故にその磁束変化に
もとずいて発生する起電力は当然小さく、超低周
波磁界のもとでは遂には起電力を発生しなくなる
のが普通である。 If an ordinary ferromagnetic material with a small overall coercive force is used instead of this magneto-sensitive element, in this case, one of the magnetization directions will change depending on the direction of action of the external magnetic field H 2 or H 3 . translocated to. However, the reversal speed depends essentially on the rate of change of the external magnetic field. Therefore, for example, if the external magnetic field is generated by an alternating current in a relatively low frequency range, or if it is a magnetic field exerted by a moving magnet, the magnetization reversal will inevitably be slow. Therefore, the electromotive force generated based on the change in magnetic flux is naturally small, and normally no electromotive force is generated under an ultra-low frequency magnetic field.
なお前述した第１の外部磁界H1と第３の外部
磁界H3とは同方向であるから、実際には同一の
磁界を用いてもよい。 Note that since the first external magnetic field H 1 and the third external magnetic field H 3 described above are in the same direction, the same magnetic field may actually be used.
本考案は、このような感磁要素の特性を活用し
て、諸種の被制御回路の瞬時的な開閉、例えば電
動機の如き負荷や警報機等の各種の被制御対象を
瞬時に自動的に作動させるのに有効なものであ
る。 The present invention utilizes the characteristics of magnetically sensitive elements to instantaneously open and close various controlled circuits, for example, to instantaneously and automatically operate various controlled objects such as loads such as electric motors and alarms. It is effective for
以下、本考案の実施例を図面について説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は電流変化による外部磁界を作用させる
実施例である。まずスイツチS1を閉じて励磁コイ
ル２に直流電流I1を流すことにより、前記第１の
外部磁界H1を作用させて感磁要素１の全体を正
方向に磁化した後S1を開いておく。そして次にス
イツチS2を閉じた状態で、入力回路３を経た被検
知交流電流の負方向成分−I2による第２の外部磁
界H2と、正方向成分による第３の外部磁界H3と
が作用した時点で、検出コイル４にパルス起電力
を誘発する。このパルス起電力を半導体制御素子
６の例えば図のようなサイリスタのゲートに対す
るトリガ信号として用い、被制御回路５の瞬時的
なON，OFF動作を行わせる。この場合、７は調
整用抵抗、８は被制御対象の電動機や警報機の制
御回路等、９はその電源開閉回路そして１０は電
流調整器である。 FIG. 1 shows an embodiment in which an external magnetic field is applied by changing the current. First, switch S 1 is closed and direct current I 1 is applied to excitation coil 2 to apply the first external magnetic field H 1 to magnetize the entire magnetic sensing element 1 in the positive direction, and then switch S 1 is opened. put. Then, with the switch S 2 closed, a second external magnetic field H 2 due to the negative direction component −I 2 of the detected AC current passing through the input circuit 3 , and a third external magnetic field H 3 due to the positive direction component. At the time when the voltage is applied, a pulse electromotive force is induced in the detection coil 4. This pulse electromotive force is used as a trigger signal for the gate of a thyristor of the semiconductor control element 6, for example, as shown in the figure, to cause the controlled circuit 5 to instantaneously turn on and off. In this case, 7 is an adjustment resistor, 8 is a control circuit for a motor or alarm to be controlled, etc., 9 is a power supply switching circuit thereof, and 10 is a current regulator.
なお半導体制御素子としてトランジスタ等を用
いても同様の作用効果が得られる。 Note that similar effects can be obtained even if a transistor or the like is used as the semiconductor control element.
第２図は、感磁要素１に対して作用する磁界を
移動磁石が与える場合の実施例である。前記第１
の外部磁界H1の作用をする磁石M1と、第２の外
部磁界H2を与える磁石M2および第３の外部磁界
H3の磁石M3とをそれぞれ間隔を置いて一体に
し、これらを相対的に移動させてパルスを発生さ
せる場合を示す。これは例えば機械装置に磁石を
装着しておき、その回転や移動に伴つて被制御回
路５をON，OFFさせる例である。 FIG. 2 shows an embodiment in which a moving magnet provides a magnetic field that acts on the magnetically sensitive element 1. In FIG. Said first
a magnet M 1 acting on an external magnetic field H 1 and a magnet M 2 exerting a second external magnetic field H 2 and a third external magnetic field
A case is shown in which H 3 and magnet M 3 are integrated with each other at intervals and the pulses are generated by moving them relatively. This is an example in which a magnet is attached to a mechanical device, and the controlled circuit 5 is turned on and off as the magnet rotates or moves.
第３図は、機械的なひねりが加えられることに
より、感磁要素としての性状が形成された時点で
誘発パルスを発生させ、その時点で被制御回路５
を動作させようとする例である。 FIG. 3 shows that by applying a mechanical twist, an induced pulse is generated at the point when the properties as a magnetically sensitive element are formed, and at that point, the controlled circuit 5
This is an example of trying to make it work.
すなわち第３図の１の強磁性線として、例えば
未だひねりを加えてない未処理のものを装着して
おくと、これは複合磁気特性を有しない単一磁性
の強磁性体であるから、低周波の交流磁界が鎖交
したような場合には殆どパルスを誘発しない。 In other words, if an untreated ferromagnetic wire (1) in Figure 3 is attached, for example, it will have a low In cases where alternating frequency magnetic fields are interlinked, almost no pulse is induced.
しかしながらこの強磁性線に対し、その一端か
ら何等かの手段によつて矢印のように機械的なひ
ねりが加えられたとすると、前述のように感磁要
素としての複合磁性を具備するに至り、その時点
でパルスを誘発する。これは異常振動やひずみ応
力等を、機械的なひねりとして強磁性線に伝達す
るような構成にすれば、各種の測定手段として広
く利用することができる。 However, if this ferromagnetic wire is mechanically twisted in the direction of the arrow by some means from one end, it will have complex magnetism as a magnetically sensitive element as described above, and its Triggering a pulse at the time point. This can be widely used as a variety of measurement means if it is configured to transmit abnormal vibrations, strain stress, etc. to the ferromagnetic wire as a mechanical twist.
第１図ないし第３図は本考案の実施例を示す配
線図である。
１……感磁要素、２……励磁コイル、３……入
力回路、４……検出コイル、５……被制御回路、
６……半導体制御素子、７……調整用抵抗。
1 to 3 are wiring diagrams showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Magnetism sensitive element, 2... Excitation coil, 3... Input circuit, 4... Detection coil, 5... Controlled circuit,
6... Semiconductor control element, 7... Adjustment resistor.
Claims (1)
を有する一軸性の磁気異方性を備えた複合強磁性
体から成る感磁要素と、その近くに配置された検
出コイルと、この検出コイルからのパルス信号を
ゲートに入れて被制御回路を開閉する半導体制御
素子を具備した回路制御装置。 A magneto-sensitive element made of a composite ferromagnetic material with uniaxial magnetic anisotropy having a portion with a large coercive force and a portion with a small coercive force, a sensing coil placed near the sensing element, and a sensing coil from the sensing coil. A circuit control device equipped with a semiconductor control element that opens and closes a controlled circuit by inputting a pulse signal into a gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5766985U JPS60183343U (en) | 1985-04-18 | 1985-04-18 | circuit control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5766985U JPS60183343U (en) | 1985-04-18 | 1985-04-18 | circuit control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60183343U JPS60183343U (en) | 1985-12-05 |
| JPS6235239Y2 true JPS6235239Y2 (en) | 1987-09-08 |
Family
ID=30582414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5766985U Granted JPS60183343U (en) | 1985-04-18 | 1985-04-18 | circuit control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60183343U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5224910B2 (en) * | 1973-04-19 | 1977-07-04 | ||
| JPS538489U (en) * | 1976-07-07 | 1978-01-24 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5224910U (en) * | 1975-08-12 | 1977-02-22 |
-
1985
- 1985-04-18 JP JP5766985U patent/JPS60183343U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5224910B2 (en) * | 1973-04-19 | 1977-07-04 | ||
| JPS538489U (en) * | 1976-07-07 | 1978-01-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60183343U (en) | 1985-12-05 |
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