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公开(公告)号：US09767952B2
公开(公告)日：2017-09-19
申请号：US15337402
申请日：2016-10-28
Applicant: TDK Corporation
Inventor： Takahiro Hamamura , Takashi Osada , Masafumi Kami , Adrian Lo
CPC classification number: H01F27/266 , G01R15/183 , G01R33/04 , G01R33/063 , H01F17/04 , H01F27/2823 , H01F27/29
Abstract: Disclosed herein is a magnetic sensor including: a first core made of a first soft magnetic material, the first core having first and second connection surfaces; a second core made of a second soft magnetic material different from the first soft magnetic material, the second core having a third connection surface facing the first connection surface and a fourth connection surface facing the second connection surface; and a coil wound around the first core between the first connection surface and the second connection surface. The first core reaches magnetic saturation at a higher magnetic field intensity than that of the second core, and the second core has a higher magnetic permeability than that of the first core.
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公开(公告)号：US10884077B2
公开(公告)日：2021-01-05
申请号：US15725568
申请日：2017-10-05
Applicant: TDK Corporation
Inventor： Takahiro Hamamura , Takashi Osada , Masafumi Kami , Adrian Lo
Abstract: Disclosed herein is an inductance element for a magnetic sensor. The inductance element includes a first core comprising a first soft magnetic material and having first and second connecting surfaces, a second core comprising a second soft magnetic material different from the first soft magnetic material and having third and fourth connecting surfaces facing the first and second connecting surfaces, respectively, and a coil wound around the first core between the first and second connecting surfaces, wherein the first core is larger in magnetic field strength at which magnetic saturation occurs than the second core, and wherein the second core is higher in permeability than the first core and has at least partially a meander shape.
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公开(公告)号：US10905011B2
公开(公告)日：2021-01-26
申请号：US16494809
申请日：2018-03-16
Applicant: TDK Corporation
Inventor： Masafumi Kami , Hiroshi Kobayashi , Tamon Kasajima
Abstract: A state detecting device which can be applied even in a severe environment. The state detecting device includes a chargeable all-solid-state battery, a piezoelectric element which supplies charging power to the all-solid-state battery, and an integrated circuit including various sensors which operate with electric power supplied from the all-solid-state battery. The all-solid-state battery, the piezoelectric element, and the integrated circuit are mounted on one surface of a flexible substrate. The flexible substrate is attached to a flexible object which is either an object to be measured or constitutes at least part of an inner surface of a space to be measured.
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公开(公告)号：US20250052837A1
公开(公告)日：2025-02-13
申请号：US18793208
申请日：2024-08-02
Applicant: TDK Corporation
Inventor： Yuichiro YAMAJI , Tamon Kasajima , Masafumi Kami , Osamu Harakawa
Abstract: Disclosed herein is a magnetic field detection device that includes a support having first, second, and third cutouts; and first, second, and third magnetic sensors accommodated in the first, second, and third cutouts, respectively. The support has first and second surfaces extending in first and second directions, third and fourth surfaces extending in the first and third directions, and fifth and sixth surfaces extending in the second and third directions. The first cutout is formed in at least one of the first and fourth surfaces, the second cutout is formed in at least one of the second and fifth surfaces, and the third cutout is formed in at least one of the third and sixth surfaces. Magnetic sensing directions of the first, second, and third magnetic sensors are the first, second, and third directions, respectively.
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