公开(公告)号：US20200152368A1

公开(公告)日：2020-05-14

申请号：US16574591

申请日：2019-09-18

Applicant: Korea Research Institute of Standards and Science

Inventor： Seong Min HWANG ,  Jeong Hyun SHIM ,  Ingo HILSCHENZ ,  Seong-Joo LEE ,  Kiwoong KIM

IPC: H01F27/10 ,  H01F27/28 ,  G01R33/34

Abstract: A fluid-cooled electromagnet includes an upper housing, a lower housing vertically aligned with the upper housing, a plurality of pancake coils disposed between the upper housing and the lower housing to be spaced apart from each other and sequentially stacked to have a washer shape, and at least one spacer, disposed between the upper housing and the lower housing, accommodating the pancake coils at regular intervals.

公开(公告)号：US20200146631A1

公开(公告)日：2020-05-14

申请号：US16574573

申请日：2019-09-18

Applicant: Korea Research Institute of Standards and Science

Inventor： Kiwoong KIM

IPC: A61B5/00 ,  A61B5/04 ,  A61B5/0478

Abstract: A bioelectrical signal measuring apparatus includes a mucosa contact electrode brought into contact with a nasal cavity mucosa or an oral cavity mucosa to apply a negative pressure and to measure a bioelectrical signal, an insertion tube, having one end supporting the mucosa contact electrode, inserted into a nasal cavity and bent, and a lead wire, connected to the mucosa contact electrode and connected to an amplifier disposed outside, extending in the insertion tube.

公开(公告)号：US20190082997A1

公开(公告)日：2019-03-21

申请号：US16085488

申请日：2017-04-03

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Seong-Joo LEE ,  Kiwoong KIM ,  Jeong-Hyun SHIM ,  Kwon-Kyu YU ,  Seong-min HWANG

IPC: A61B5/055 ,  A61B5/00 ,  G01R33/24 ,  G01R33/44 ,  G01R33/48

Abstract: Provided are an ultra-low field nuclear magnetic resonance device and a method for measuring an ultra-low field nuclear resonance image. The ultra-low field nuclear magnetic resonance device includes an AC power supply configured to supply a current to a measurement target in such a manner the current flows to the measurement target, magnetic field measurement means disposed adjacent to the measurement target, and measurement bias magnetic field generation means configured to apply a measurement bias magnetic field corresponding to a proton magnetic resonance frequency of the measurement target. A vibration frequency of the AC power supply matches the proton magnetic resonance frequency of the measurement target, and the magnetic field measurement means measures a nuclear magnetic resonance signal generated from the measurement target.

公开(公告)号：US20130271145A1

公开(公告)日：2013-10-17

申请号：US13909564

申请日：2013-06-04

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Seong-min HWANG ,  Kiwoong KIM ,  Jin Mok KIM ,  Yong-Ho LEE ,  Chan Seok KANG ,  Kwon Kyu YU ,  Seong-Joo LEE

IPC: G01R33/421

CPC classification number: G01R33/421 ,  A61B5/0046 ,  A61B5/055 ,  G01R33/445

Abstract: Provided are an apparatus and a method for canceling magnetic fields. The apparatus includes a magnetic field canceling coil disposed adjacent to an inner wall of a magnetic shield room to surround the entire inner space or a portion of an inner space of the magnetic shield room; and a magnetic field canceling coil driver to supply current to the magnetic field canceling coil. The magnetic field canceling coil cancels a prepolarization magnetic field established on the wall of the magnetic shield room by a prepolarization coil disposed in the center of the magnetic shield room to minimize magnetic interference caused by the magnetic shield room.

Abstract translation: 提供了一种抵消磁场的装置和方法。 该装置包括一个与磁屏蔽室的内壁邻接设置的磁场消除线圈，以围绕磁屏蔽室的整个内部空间或内部空间的一部分; 以及用于向磁场消除线圈提供电流的磁场消除线圈驱动器。 磁场消除线圈通过设置在磁屏蔽室的中心的预极化线圈抵消在磁屏蔽室的壁上建立的前极化磁场，以最小化由磁屏蔽室引起的磁干扰。