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1. (WO2017199519) EQUILIBRIUM TYPE MAGNETIC DETECTING DEVICE
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Pub. No.: WO/2017/199519 International Application No.: PCT/JP2017/007187
Publication Date: 23.11.2017 International Filing Date: 24.02.2017
IPC:
G01R 33/09 (2006.01) ,G01R 33/02 (2006.01) ,G01R 15/20 (2006.01)
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33
Arrangements or instruments for measuring magnetic variables
02
Measuring direction or magnitude of magnetic fields or magnetic flux
06
using galvano-magnetic devices
09
Magneto-resistive devices
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33
Arrangements or instruments for measuring magnetic variables
02
Measuring direction or magnitude of magnetic fields or magnetic flux
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
15
Details of measuring arrangements of the types provided for in groups G01R17/-G01R29/, G01R33/-G01R33/26176
14
Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
20
using galvano-magnetic devices, e.g. Hall-effect devices
Applicants:
アルプス電気株式会社 ALPS ELECTRIC CO., LTD. [JP/JP]; 東京都大田区雪谷大塚町1番7号 1-7, Yukigaya-otsukamachi, Ota-ku, Tokyo 1458501, JP
Inventors:
井出 洋介 IDE, Yosuke; JP
▲高▼橋 彰 TAKAHASHI, Akira; JP
Agent:
野▲崎▼ 照夫 NOZAKI, Teruo; JP
Priority Data:
2016-09865117.05.2016JP
Title (EN) EQUILIBRIUM TYPE MAGNETIC DETECTING DEVICE
(FR) DISPOSITIF DE DÉTECTION MAGNÉTIQUE DU TYPE À ÉQUILIBRE
(JA) 平衡式磁気検知装置
Abstract:
(EN) Provided is an equilibrium type magnetic field detecting device which employs a common feedback coil and which is capable of switching to a measurement range and a measurement sensitivity corresponding to a change in a measured magnetic field (Ho). Magneto-resistive elements (11, 12, 13, 14) forming a first bridge circuit (10) oppose a first opposing region (33) of a feedback coil (30), and magneto-resistive elements (21, 22, 23, 24) forming a second bridge circuit (20) oppose a second opposing region (34). The first bridge circuit (10) is covered by a shield layer (41), but the second bridge circuit (20) is not covered by the shield layer. The measurement range is widened when a switching unit (62) switches to the first bridge circuit (10), and the detecting sensitivity can be increased by switching to the second bridge circuit (20).
(FR) L'invention concerne un dispositif de détection de champ magnétique du type à équilibre qui utilise une bobine de rétroaction commune et qui est apte à commuter vers une plage de mesure et une sensibilité de mesure correspondant à un changement dans un champ magnétique mesuré (Ho). Des éléments magnétorésistifs (11, 12, 13, 14) formant un premier circuit en pont (10) s'opposent à une première région opposée (33) d'une bobine de rétroaction (30), et des éléments magnétorésistifs (21, 22, 23, 24) formant un second circuit en pont (20) s'opposent à une seconde région opposée (34). Le premier circuit en pont (10) est recouvert d'une couche de protection (41), mais le second circuit en pont (20) n'est pas recouvert par la couche de protection. La plage de mesure est élargie lorsqu'une unité de commutation (62) commute vers le premier circuit en pont (10), et la sensibilité de détection peut être augmentée par commutation vers le second circuit en pont (20).
(JA) 共通のフィードバックコイルを用いて、被測定磁場(Ho)の変化に応じた測定レンジと測定感度に切替えることができる平衡式磁界検知装置を提供する。フィードバックコイル(30)の第1の対向領域(33)に第1のブリッジ回路(10)を構成する磁気抵抗効果素子(11,12,13,14)が対向し、第2の対向領域(34)に第2のブリッジ回路(20)を構成する磁気抵抗効果素子(21,22,23,24)が対向している。前記第1のブリッジ回路(10)はシールド層(41)で覆われているが、前記第2のブリッジ回路(20)はシールド層に覆われていない。切替え部(62)で前記第1のブリッジ回路(10)に切替えると、測定レンジが広くなり、前記第2のブリッジ回路(20)に切替えると、検知感度を高めることができる。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)