JP5006511B2 - 電流センサ及びそれを用いた電流検知ユニット - Google Patents
電流センサ及びそれを用いた電流検知ユニット Download PDFInfo
- Publication number
- JP5006511B2 JP5006511B2 JP2004297655A JP2004297655A JP5006511B2 JP 5006511 B2 JP5006511 B2 JP 5006511B2 JP 2004297655 A JP2004297655 A JP 2004297655A JP 2004297655 A JP2004297655 A JP 2004297655A JP 5006511 B2 JP5006511 B2 JP 5006511B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- current
- magnetic field
- current sensor
- current line
- 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 - Lifetime
Links
- 238000001514 detection method Methods 0.000 title claims description 63
- 230000005291 magnetic effect Effects 0.000 claims description 149
- 230000035699 permeability Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 3
- 239000010409 thin film Substances 0.000 description 17
- 230000008859 change Effects 0.000 description 6
- 230000004907 flux Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 229910000889 permalloy Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- -1 amorphous Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Description
トランジスタ技術 2003年12月号 125P(CQ出版社発行)
H2(区間2からの磁界)=I/(2πd)×cosθ2
H3(区間3からの磁界)=H1(区間1からの磁界)
但し、tanθ1=s/(I+d) tanθ2=d/s
磁気検出素子10を電流線20のU字の先端部に距離dをおいて配置すると共に、U字状部の両脚部の延長軸間に位置するようにすれば、磁界方向は右ねじの法則により磁界H2と磁界H1、H3が相対的に逆となり、磁界H2の磁界を正として、総和Hを求めると、
H=I/2π×(cosθ2/d−cosθ1/s+sinθ2/s)
となる。
12 非磁性基板
14 磁性体(磁性薄膜)
16a、16b 電極
18 磁気シールド
20 電流線
30 電流線
32 支持部材
34 ねじ
36a シールドケース
36b 蓋
38 ポスト
40 磁気検出素子(MI素子)
42 回路基板
44 ねじ
46 ケーブル
50 非磁性基板
52 磁性薄膜
54 平面コイル
56 電極
60 パルス発振器
62 バッファ
64 容量
66p、66m 検波回路
68p、68m 分圧抵抗
70 増幅器
72 パルス発振器
74 バッファ
76 分圧抵抗
78 検波回路
80 増幅器
Claims (3)
- 磁性体に直接高周波電流を流し、外部磁界によりその透磁率が変化する磁気検出素子を用いた電流センサにおいて、前記磁気検出素子の周囲を磁気シールドする磁気シールド部材と、該磁気シールド部材内に設けた電流線とを有し、該電流線は前記磁気シールド部材内において電流バーを曲げてU字形状とし、前記磁気検出素子は、その磁界検知方向が前記電流線のU字形状の両脚部の並び方向に対して直交する方向になるように配置すると共に、前記電流線の両脚部のそれぞれの延長軸間に配置し、前記U字形状のU字を閉じた先端部の外側に所定距離だけ離間したことを特徴とする電流センサ。
- 前記磁気シールド部材を6面体の箱構造にし、前記電流線を内部に引き込む開口部をその1面の一部に設けたことを特徴とする請求項1に記載の電流センサ。
- 請求項1又は2に記載の電流センサと、該電流センサを内部に保持する保持部材とを有する電流検知ユニット。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004297655A JP5006511B2 (ja) | 2004-10-12 | 2004-10-12 | 電流センサ及びそれを用いた電流検知ユニット |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004297655A JP5006511B2 (ja) | 2004-10-12 | 2004-10-12 | 電流センサ及びそれを用いた電流検知ユニット |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006112813A JP2006112813A (ja) | 2006-04-27 |
JP5006511B2 true JP5006511B2 (ja) | 2012-08-22 |
Family
ID=36381460
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004297655A Expired - Lifetime JP5006511B2 (ja) | 2004-10-12 | 2004-10-12 | 電流センサ及びそれを用いた電流検知ユニット |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5006511B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5414333B2 (ja) * | 2009-04-09 | 2014-02-12 | 矢崎総業株式会社 | 電流検出装置の組付け構造 |
JP5700745B2 (ja) * | 2009-06-12 | 2015-04-15 | 矢崎総業株式会社 | 電流検出装置の組付け構造 |
WO2012046547A1 (ja) * | 2010-10-08 | 2012-04-12 | アルプス・グリーンデバイス株式会社 | 電流センサ |
JP6008756B2 (ja) * | 2012-02-24 | 2016-10-19 | 三菱電機株式会社 | 電流センサおよび三相交流用電流センサ装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02238372A (ja) * | 1989-03-13 | 1990-09-20 | Fujitsu Ltd | 電流検出器 |
JP2000258464A (ja) * | 1999-03-09 | 2000-09-22 | Mitsubishi Materials Corp | 電流センサ |
JP2003315376A (ja) * | 2002-04-18 | 2003-11-06 | Aichi Micro Intelligent Corp | 電流センサ |
-
2004
- 2004-10-12 JP JP2004297655A patent/JP5006511B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2006112813A (ja) | 2006-04-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3096413B2 (ja) | 磁気検出素子、磁気センサー、地磁気検出型方位センサー、及び姿勢制御用センサー | |
US9766304B2 (en) | Integrated AMR magnetoresistor with a set/reset coil having a stretch positioned between a magnetoresistive strip and a concentrating region | |
JP4368797B2 (ja) | 磁場センサ−と磁場センサ−の操作方法 | |
US5831431A (en) | Miniaturized coil arrangement made by planar technology, for the detection of ferromagnetic materials | |
CN104246525B (zh) | 磁传感器设备 | |
CN106291414B (zh) | 大规模的集成amr磁电阻器 | |
JP4247821B2 (ja) | 電流センサ | |
JP2008197089A (ja) | 磁気センサ素子及びその製造方法 | |
JP2011149827A (ja) | 通電情報計測装置 | |
JP2001330655A (ja) | 磁気センサ及びその製造方法 | |
US20220342012A1 (en) | Hydrogen gas sensor based on electrically isolated tunnel magnetoresistive sensitive element | |
JPWO2013176271A1 (ja) | 電流センサ | |
US11333529B2 (en) | Magnetic position sensor | |
WO2021100252A1 (ja) | 磁気センサ | |
US20160266218A1 (en) | Magnetic sensor | |
JP2020071198A (ja) | 磁気センサ | |
JP2009180608A (ja) | Icチップ形電流センサ | |
JP5006511B2 (ja) | 電流センサ及びそれを用いた電流検知ユニット | |
JP3764834B2 (ja) | 電流センサー及び電流検出装置 | |
JP4541136B2 (ja) | 磁性体検出センサ及び磁性体検出ラインセンサ | |
JP4524195B2 (ja) | 磁気検出素子 | |
WO2017163471A1 (ja) | 磁気センサ | |
JP5139822B2 (ja) | 磁界プローブ | |
US10247790B2 (en) | Magnetic sensor | |
US10168395B2 (en) | Magnetic sensor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20071009 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20080207 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20090219 |
|
RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20090305 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20110125 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20110323 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20110705 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20110817 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20120501 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20120525 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150601 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5006511 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |