MAGNETIC SENSOR

• Main Authors: WATABE MORIYA, HIRABAYASHI HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 03.10.2019
• Subjects: ELECTRICITY; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

To prevent, in a magnetic sensor including three detection units detecting components in three directions of an external magnetic field, a situation in which due to a soft magnetic structure included in one detection unit, the characteristics of outputs from the other two detection units become different.SOLUTION: A magnetic sensor 1 comprises first to third detection units 10, 20, 30 detecting components in an X-direction, a Y-direction, and a Z-direction of an external magnetic field. The third detection unit 30 includes a soft magnetic structure. The first detection unit 10 includes first and second portions 11, 12. The second detection unit 20 includes third and fourth portions 21, 22. The first portion 11 and fourth portion 22 are located on both sides of the third detection unit 30 in the X-direction. The second portion 12 and third portion 21 are located on both sides of the third detection unit 30 in the Y-direction.SELECTED DRAWING: Figure 1 【課題】外部磁界の３方向の成分を検出する３つの検出部を含む磁気センサにおいて、１つの検出部に含まれる軟磁性構造体に起因して他の２つの検出部の出力の特性が異なることを抑制する。【解決手段】磁気センサ１は、外部磁界のＸ方向、Ｙ方向、Ｚ方向の成分を検出する第１ないし第３の検出部１０，２０，３０を備えている。第３の検出部３０は軟磁性構造体を含んでいる。第１の検出部１０は、第１および第２の部分１１，１２を含んでいる。第２の検出部２０は、第３および第４の部分２１，２２を含んでいる。第１の部分１１と第４の部分２２は、Ｘ方向における第３の検出部３０の両側に位置している。第２の部分１２と第３の部分２１は、Ｙ方向における第３の検出部３０の両側に位置している。【選択図】図１