JPH08285931A - Abnormality diagnostic tool of hall element-type current detector - Google Patents
Abnormality diagnostic tool of hall element-type current detectorInfo
- Publication number
- JPH08285931A JPH08285931A JP7094635A JP9463595A JPH08285931A JP H08285931 A JPH08285931 A JP H08285931A JP 7094635 A JP7094635 A JP 7094635A JP 9463595 A JP9463595 A JP 9463595A JP H08285931 A JPH08285931 A JP H08285931A
- Authority
- JP
- Japan
- Prior art keywords
- hall element
- current detector
- type current
- magnetic flux
- abnormality
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ホール素子型電流検出
器の異常診断を簡便に行うための異常診断器具およびそ
の診断方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an abnormality diagnosing device and a diagnosing method thereof for easily diagnosing an abnormality of a Hall element type current detector.
【０００２】[0002]
【従来の技術】従来、ホール素子型電流検出器は図３の
ように構成されていた。図３において１はホール素子型
電流検出器の匡体、２は磁路を形成しているコアであ
り、この例では４分割されている（通常、大電流用のコ
アは飽和を防止するため、分割し空隙を設けて、磁束密
度を調整している）。３はホール素子、４はホール素子
３をドライブし且つ微弱信号を増幅するアンプ、５は一
次導体である。これら匡体１、コア２、ホール素子３、
アンプ４によってホール素子型電流検出器６を構成して
いる。2. Description of the Related Art Conventionally, a Hall element type current detector has been constructed as shown in FIG. In FIG. 3, reference numeral 1 is a case of a Hall element type current detector, 2 is a core forming a magnetic path, and in this example, it is divided into 4 (usually, a core for a large current is used to prevent saturation). , And the gap is provided to adjust the magnetic flux density). Reference numeral 3 is a hall element, 4 is an amplifier for driving the hall element 3 and amplifies a weak signal, and 5 is a primary conductor. These casing 1, core 2, hall element 3,
The amplifier 4 constitutes the Hall element type current detector 6.
【０００３】上記のように構成された検出器において、
一次導体５に通電した電流によって図示Ｈの矢印のよう
な磁束が発生し、コア２は電流に比例した磁束密度とな
り、この磁束密度をホール素子４で検出し、一次導体５
に流れている電流を検出するものである。In the detector constructed as described above,
A magnetic flux as indicated by an arrow H in the figure is generated by the current passed through the primary conductor 5, and the core 2 has a magnetic flux density proportional to the current. The magnetic flux density is detected by the hall element 4 and the primary conductor 5
This is to detect the current flowing in the.
【０００４】上記のように構成されたホール素子型電流
検出器の異常診断を行うためには、従来次の２つの手法
があった。 （１）実際に一次電流を通電して出力を確認する。 （２）テスト巻線に通電し、一次電流を通電した時と等
価の起磁力を発生させて、出力を確認する。Conventionally, there have been the following two methods for diagnosing an abnormality in the Hall element type current detector configured as described above. (1) Actually apply a primary current and check the output. (2) Energize the test winding and generate a magnetomotive force equivalent to that when the primary current is applied to confirm the output.
【０００５】[0005]
【発明が解決しようとする課題】ホール素子型電流検出
器が数１０００アンペア以上の大電流用の場合、上述し
た従来の異常診断方法には以下の問題点があった。When the Hall element type current detector is for a large current of several thousand amperes or more, the above-mentioned conventional abnormality diagnosis method has the following problems.
【０００６】（１）一次電流を定格まで通電するために
は、大型の電源が必要となり、現地等で簡便に実施する
ことができない。(1) In order to pass the primary current up to the rated value, a large power source is required, which cannot be easily carried out on site.
【０００７】（２）テスト巻線にて等価の起磁力を発生
させて異常診断する為には、テスト巻線を巻く作業が必
要となり、数１００〜数１０００回も巻くには、大変な
時間と労力が必要となる。また予めテスト巻線を装備し
ているホール素子型電流検出器の場合は、テスト巻線を
巻くためのスペースが必要となり、ホール素子型電流検
出器の寸法が大きくなる問題点があり、またコストも高
くなってしまう。(2) It is necessary to wind the test winding in order to generate an equivalent magnetomotive force in the test winding to diagnose an abnormality, and it takes a very long time to wind the test winding several hundred to several thousand times. And labor is required. Also, in the case of a Hall element type current detector equipped with a test winding in advance, a space for winding the test winding is required, which causes a problem that the dimension of the Hall element type current detector becomes large and the cost is low. Will also be high.
【０００８】本発明は上記の点に鑑みてなされたもので
その目的は、一次電流を通電するための大型の電源を設
けたり、テスト巻線を巻く必要のないホール素子型電流
検出器の異常診断器具を提供することにある。The present invention has been made in view of the above points, and an object thereof is to provide an abnormality of a Hall element type current detector which does not require a large power source for supplying a primary current or winding a test winding. To provide a diagnostic instrument.
【０００９】[0009]
【課題を解決するための手段】本発明は、一次導体の外
周に配設されたコアと、一次導体の通電時にコアに発生
する磁束を検出するホール素子とを備えたホール素子型
電流検出器において、コの字型又はＵ字型に形成された
強磁性体ヨークと、該強磁性体ヨークに装着された永久
磁石とを有し、診断時に前記ホール素子挿入部に当接す
ることによって、前記強磁性体ヨークおよび前記ホール
素子型電流検出器のコアに磁束を発生せしめ、該磁束密
度を前記ホール素子によって検出して機能診断を行うこ
とを特徴としている。SUMMARY OF THE INVENTION The present invention is a Hall element type current detector having a core arranged on the outer periphery of a primary conductor and a Hall element for detecting a magnetic flux generated in the core when the primary conductor is energized. In a U-shaped or U-shaped ferromagnetic material yoke, and a permanent magnet mounted on the ferromagnetic material yoke, and by contacting the Hall element insertion portion at the time of diagnosis, A magnetic flux is generated in the ferromagnetic yoke and the core of the Hall element type current detector, and the magnetic flux density is detected by the Hall element for functional diagnosis.
【００１０】[0010]
【作用】本発明の異常診断器具をホール素子挿入部に当
接すると、永久磁石によって異常診断器具の強磁性体ヨ
ークとホール素子型電流検出器のコアに磁束が発生す
る。このためホール素子型電流検出器のホール素子に
は、一次導体に電流を流した時と同様の出力が得られ、
機能が診断される。このように本発明の異常診断器具を
用いることにより、ホール素子型電流検出器にテスト巻
線を巻く必要がなくなるとともに、一次電流を流さなく
ても済むため、大型の電源設備は不要となる。When the abnormality diagnosing device of the present invention is brought into contact with the Hall element insertion portion, magnetic flux is generated by the permanent magnet in the ferromagnetic yoke of the abnormality diagnosing device and the core of the Hall element type current detector. Therefore, in the Hall element of the Hall element type current detector, the same output as when a current is passed through the primary conductor is obtained,
Function is diagnosed. As described above, by using the abnormality diagnosing device of the present invention, it is not necessary to wind the test winding around the Hall element type current detector and the primary current is not required to flow, so that a large power supply facility is not required.
【００１１】[0011]
【実施例】以下図面を参照しながら本発明の一実施例を
説明する。図１は本発明の異常診断器具１０の構造を示
しており、１１はコの字形状又はＵの字形状に形成され
た強磁性体のヨークである。このヨーク１１の凹部に
は、永久磁石１２が装着されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a structure of an abnormality diagnostic device 10 of the present invention, and 11 is a ferromagnetic yoke formed in a U shape or a U shape. A permanent magnet 12 is mounted in the recess of the yoke 11.
【００１２】次に図１の異常診断器具１０を用いて図３
のホール素子型電流検出器６を診断する際の診断方法を
図２とともに説明する。図２はホール素子型電流検出器
６のホール素子３挿入部に異常診断器具１０を押し当て
た状態を示し、ホール素子型電流検出器６は図３のＡ−
Ａ′の矢印方向から見た断面を表している。Next, referring to FIG. 3 using the abnormality diagnosis instrument 10 of FIG.
A diagnostic method for diagnosing the Hall element type current detector 6 will be described with reference to FIG. FIG. 2 shows a state in which the abnormality diagnosing device 10 is pressed against the Hall element 3 insertion portion of the Hall element type current detector 6, and the Hall element type current detector 6 is A- of FIG.
It shows a cross section as seen from the direction of arrow A '.
【００１３】診断時に異常診断器具１０をホール素子３
挿入部に当接すると、永久磁石１２の作用によりヨーク
１１とホール素子型電流検出器６のコア２の磁路に図示
矢印Ｈ2の磁束が発生する。この磁束（密度）はホール
素子３によって検出され、一次導体に電流を流した時と
同様の出力が得られる。At the time of diagnosis, the abnormality diagnosing device 10 is attached to the hall element 3
When it comes into contact with the insertion portion, a magnetic flux indicated by arrow H 2 is generated in the magnetic path of the yoke 11 and the core 2 of the Hall element type current detector 6 by the action of the permanent magnet 12. This magnetic flux (density) is detected by the Hall element 3, and the same output as when a current is passed through the primary conductor is obtained.
【００１４】実際には、工場出荷段階にて、異常診断器
具に何アンペア通電した時に、ホール素子型電流検出器
の出力がいかなる値となるかを記録しておき、ホール素
子型電流検出器１台毎のデータを採取し、現地で診断す
る際には、このデータと比較して異常診断を行うもので
ある。Actually, at the time of shipment from the factory, it is recorded how many ampere is applied to the abnormality diagnosing device and what value the output of the Hall element type current detector becomes, and the Hall element type current detector 1 is recorded. When collecting data for each machine and diagnosing it on site, the abnormality is compared with this data.
【００１５】[0015]
【発明の効果】以上のように本発明によれば、コの字型
又はＵ字型に形成された強磁性体ヨークと、該強磁性体
ヨークに装着された永久磁石とを有した異常診断器具
を、ホール素子型電流検出器に当接し、前記永久磁石に
よって強磁性体ヨークおよびホール素子型電流検出器の
コアに磁束を発生せしめ、該磁束密度をホール素子によ
って検出して機能診断を行うようにしたので、次のよう
な優れた効果が得られる。As described above, according to the present invention, an abnormality diagnosis having a U-shaped or U-shaped ferromagnetic yoke and a permanent magnet mounted on the ferromagnetic yoke is performed. The instrument is brought into contact with a Hall element type current detector, magnetic flux is generated in the ferromagnetic yoke and the core of the Hall element type current detector by the permanent magnet, and the magnetic flux density is detected by the Hall element to perform function diagnosis. By doing so, the following excellent effects can be obtained.
【００１６】（１）数１０００アンペア以上の大電流用
ホール素子型電流検出器の診断を行う際に、一次電流を
通電することなく診断できるため、大型の電源設備が不
要となる。 （２）従来のようなテスト巻線が不要となるため、テス
ト巻線を巻く手間がなくなる。またテスト巻線を巻くス
ペースが不要となるため、ホール素子型電流検出器の小
型化を図ることができ、コストも低くすることができ
る。 （３）現地での異常診断の作業を短時間で行うことがで
きる。(1) When diagnosing a large current Hall element type current detector of several thousand amperes or more, the diagnosis can be made without supplying a primary current, so that a large power supply facility is not required. (2) Since the conventional test winding is not required, there is no need to wind the test winding. Further, since the space for winding the test winding is unnecessary, the Hall element type current detector can be downsized and the cost can be reduced. (3) The on-site abnormality diagnosis work can be performed in a short time.
【図１】本発明の一実施例を示す断面構成図。FIG. 1 is a sectional configuration diagram showing an embodiment of the present invention.
【図２】本発明の一実施例を示し、実際に診断を行う場
合の説明図。FIG. 2 is an explanatory diagram showing an embodiment of the present invention when actually performing diagnosis.
【図３】従来のホール素子型電流検出器の構造を示す断
面構成図。FIG. 3 is a cross-sectional configuration diagram showing a structure of a conventional Hall element type current detector.
２…コア ３…ホール素子 ５…一次導体 ６…ホール素子型電流検出器 １０…異常診断器具 １１…ヨーク １２…永久磁石 2 ... Core 3 ... Hall element 5 ... Primary conductor 6 ... Hall element type current detector 10 ... Abnormality diagnostic instrument 11 ... Yoke 12 ... Permanent magnet
Claims (1)
次導体の通電時にコアに発生する磁束を検出するホール
素子とを備えたホール素子型電流検出器において、 コの字型又はＵ字型に形成された強磁性体ヨークと、該
強磁性体ヨークに装着された永久磁石とを有し、診断時
に前記ホール素子挿入部に当接することによって、前記
強磁性体ヨークおよび前記ホール素子型電流検出器のコ
アに磁束を発生せしめ、該磁束密度を前記ホール素子に
よって検出して機能診断を行うことを特徴とするホール
素子型電流検出器の異常診断器具。1. A Hall element type current detector comprising a core arranged on the outer periphery of a primary conductor and a Hall element for detecting a magnetic flux generated in the core when the primary conductor is energized. The ferromagnetic yoke and the Hall element have a character-shaped ferromagnetic yoke and a permanent magnet attached to the ferromagnetic yoke, and are brought into contact with the Hall element insertion portion at the time of diagnosis. An abnormality diagnosis instrument for a Hall element type current detector, wherein a magnetic flux is generated in a core of a die current detector, and the magnetic flux density is detected by the Hall element to perform a function diagnosis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7094635A JPH08285931A (en) | 1995-04-20 | 1995-04-20 | Abnormality diagnostic tool of hall element-type current detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7094635A JPH08285931A (en) | 1995-04-20 | 1995-04-20 | Abnormality diagnostic tool of hall element-type current detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08285931A true JPH08285931A (en) | 1996-11-01 |
Family
ID=14115735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7094635A Pending JPH08285931A (en) | 1995-04-20 | 1995-04-20 | Abnormality diagnostic tool of hall element-type current detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08285931A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011223255A (en) * | 2010-04-08 | 2011-11-04 | Olympus Imaging Corp | Imaging equipment |
| JP2013195381A (en) * | 2012-03-22 | 2013-09-30 | Stanley Electric Co Ltd | Current detection device |
| JP2020143962A (en) * | 2019-03-05 | 2020-09-10 | 株式会社日立産機システム | Current sensor element |
| KR20210070060A (en) * | 2019-12-04 | 2021-06-14 | 한국표준과학연구원 | Cable defect inspection apparatus |
-
1995
- 1995-04-20 JP JP7094635A patent/JPH08285931A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011223255A (en) * | 2010-04-08 | 2011-11-04 | Olympus Imaging Corp | Imaging equipment |
| JP2013195381A (en) * | 2012-03-22 | 2013-09-30 | Stanley Electric Co Ltd | Current detection device |
| JP2020143962A (en) * | 2019-03-05 | 2020-09-10 | 株式会社日立産機システム | Current sensor element |
| KR20210070060A (en) * | 2019-12-04 | 2021-06-14 | 한국표준과학연구원 | Cable defect inspection apparatus |
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