公开(公告)号：US20150331072A1

公开(公告)日：2015-11-19

申请号：US14712374

申请日：2015-05-14

Applicant: TDK CORPORATION

Inventor： Akihiro OGAWA ,  Tamon KASAJIMA ,  Kei TANABE

IPC: G01R33/12

CPC classification number: G01R33/09 ,  G01R33/1253

Abstract: A magnetic field detecting sensor includes a bridge circuit which is connected to multiple magnetoresistive effect elements and is capable of outputting a differential voltage between specified connection points, a magnetic field generating conductor for providing the magnetoresistive effect elements with a magnetic field in a direction opposite to that of the detection magnetic field by disposing a magnetic body near the center of the bridge circuit, a differential operation circuit which the differential voltage is input in and makes a feedback current flow to the magnetic field generating conductor, wherein the feedback current generates the magnetic field in a direction opposite to that of the detection magnetic field in the magnetic field generating conductor, and a voltage converting circuit for outputting the feedback current as a voltage value. The magnetic field generating conductor and the magnetoresistive effect elements are formed in the same stacked body.

Abstract translation: 磁场检测传感器包括连接到多个磁阻效应元件并能够输出指定连接点之间的差分电压的桥接电路，用于向磁阻效应元件提供磁场的磁场产生导体，该磁场产生导体沿与 通过将磁体配置在桥接电路的中心附近的检测磁场的位置，输入差分电压并使反馈电流流向磁场产生导体的差分运算电路，其中反馈电流产生磁场 在与磁场产生导体中的检测磁场的方向相反的方向上设置电场，以及电压转换电路，用于输出反馈电流作为电压值。 磁场产生导体和磁阻效应元件形成在相同的层叠体中。

公开(公告)号：US20150115938A1

公开(公告)日：2015-04-30

申请号：US14528231

申请日：2014-10-30

Applicant: TDK CORPORATION

Inventor： Tamon KASAJIMA ,  Kei TANABE ,  Akihiro OGAWA

IPC: G01D5/22 ,  G01R33/09

CPC classification number: G01R33/09 ,  G01R33/0041

Abstract: A magnetic field detection device includes: a first magnetic field generating part, including a first magnetic field generating conductor; a first magnetic field detection part, including a first magnetic field detection element and a first differential operation part, wherein a first output of the first magnetic field detection element corresponding to the environment magnetic field is inputted into the first differential operation part, and a first feedback current flows into the first magnetic field generating conductor, and thus the first magnetic field generating part provides the first magnetic field detection element with a first feedback current magnetic field, with a direction opposite to the environment magnetic field; a second magnetic field generating part, including a second magnetic field generating conductor, in which a second current corresponding to the first feedback current flows; and a second magnetic field detection part, including a second magnetic field detection element.

Abstract translation: 磁场检测装置包括：第一磁场产生部，包括第一磁场产生导体; 第一磁场检测部，其包括第一磁场检测元件和第一差分运算部，其中与所述环境磁场对应的所述第一磁场检测元件的第一输出被输入到所述第一差分运算部， 反馈电流流入第一磁场产生导体，因此第一磁场产生部分向第一磁场检测元件提供具有与环境磁场相反的方向的第一反馈电流磁场; 第二磁场产生部分，包括第二磁场产生导体，其中对应于第一反馈电流的第二电流流动; 以及包括第二磁场检测元件的第二磁场检测部。