公开(公告)号：US20170067971A1

公开(公告)日：2017-03-09

申请号：US15257051

申请日：2016-09-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung-Min CHOI ,  Hyo-Bong HONG

IPC: G01R33/12 ,  G01R33/34 ,  G01R33/00

CPC classification number: G01R33/1276 ,  A61B5/0515 ,  G01R33/0023 ,  G01R33/34053 ,  G01R33/36

Abstract: Apparatus and method for detecting a nonlinear magnetic particle based on a single excitation coil. The apparatus includes a signal generation unit for generating an input composite signal by combining a high-frequency sine wave signal and a low-frequency sine wave signal, generated based on a fundamental frequency, with each other, a signal application unit for applying the input composite signal to a single excitation solenoid coil included in a measurement head, through which a sample passes, to generate a magnetic field in the measurement head so as to detect a nonlinear magnetic particle, and a detection unit for detecting an output signal emitted from the sample depending on the magnetic field by using at least one detection solenoid coil included in the measurement head, analyzing a frequency domain of the output signal, and detecting whether the nonlinear magnetic particle is present in the sample.

Abstract translation: 基于单个励磁线圈检测非线性磁性粒子的装置和方法。 该装置包括：信号生成单元，用于通过将基于基频产生的高频正弦波信号和低频正弦波信号相互组合来生成输入复合信号;信号施加单元，用于施加输入 复合信号到包括在测量头中的单个激励螺线管线圈，样本通过该激励螺线管线圈，以在测量头中产生磁场，以便检测非线性磁性粒子;以及检测单元，用于检测从该测量头发射的输出信号 通过使用包括在测量头中的至少一个检测螺线管线圈来分析取决于磁场的样品，分析输出信号的频域，以及检测样品中是否存在非线性磁性粒子。

公开(公告)号：US20210405134A1

公开(公告)日：2021-12-30

申请号：US17318753

申请日：2021-05-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eul-Gyoon LIM ,  Jin-Sun KIM ,  Chang-Beom KIM ,  Jae-Chan JONG ,  Seung-Min CHOI ,  Hyo-Bong HONG

IPC: G01R33/12 ,  G01B21/22

Abstract: Disclosed herein is a nano-magnetic-particle-imaging apparatus, including a measurement head including excitation and detection coils and accommodating a sample bed for a sample including nano magnetic particles; a gradient magnetic field generation unit for generating a magnetic field having a strength equal to or greater than that of the saturation magnetic field of the nano magnetic particles in a spacing area between identical magnetic poles facing each other and forming a field-free region in a portion thereof; a first driving unit for linearly moving the sample bed; a second driving unit for rotating the gradient magnetic field generation unit in a plane; a third driving unit for linearly reciprocating the gradient magnetic field generation unit; and a control unit for applying a signal to the excitation coil, controlling the driving units, and imaging 3D distribution of the nano magnetic particles based on a detection signal output from the detection coil.

公开(公告)号：US20180011070A1

公开(公告)日：2018-01-11

申请号：US15599386

申请日：2017-05-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyo-Bong HONG ,  Jae-Chan JEONG ,  Seung-Min CHOI ,  Sung-Woong SHIN ,  Jae-Il CHO ,  Nam-Shik PARK

IPC: G01N33/18 ,  H01F7/06 ,  C02F1/28 ,  H01F27/28 ,  G01N27/02 ,  G01R23/16 ,  C02F101/20

CPC classification number: G01N33/1813 ,  C02F1/281 ,  C02F1/488 ,  C02F2101/20 ,  C02F2209/003 ,  G01N27/023 ,  G01N27/026 ,  G01R23/16 ,  H01F7/06 ,  H01F7/20 ,  H01F27/2823

Abstract: Disclosed herein are a method for analyzing heavy metal removal efficiency using phase difference analysis and an apparatus using the method. The method for analyzing heavy metal removal efficiency using phase difference analysis includes applying a magnetic field to a magnetite onto which a heavy metal is adsorbed, based on a first solenoid coil and a second solenoid coil that have an identical winding direction, applying a high-frequency signal to the magnetite, based on a third solenoid coil having a winding direction that differs from that of the first solenoid coil and the second solenoid coil, detecting a high-frequency signal transformed by the magnetite, and calculating a phase difference between a previously detected default high-frequency signal and the transformed high-frequency signal, and analyzing an efficiency of heavy metal removal by the magnetite by measuring a concentration of the heavy metal based on the phase difference.

公开(公告)号：US20170067730A1

公开(公告)日：2017-03-09

申请号：US15183639

申请日：2016-06-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyo-Bong HONG ,  Seung-Min CHOI ,  Chang-Beom KIM

IPC: G01B7/004

CPC classification number: G01B7/004

Abstract: Disclosed herein are an apparatus for acquiring the location coordinates of an object to be measured using two measurement heads and a method using the apparatus. The apparatus for acquiring the location coordinates of an object includes two measurement heads for individually detecting a signal corresponding to the object to be measured, a measurement head fixing unit for placing the two measurement heads so as to face each other with the object therebetween, a rotatable structure for rotating the measurement head fixing unit, and a location determination unit for acquiring the location coordinates of the object to be measured based on the strengths of the two detection signals detected by the measurement heads.

Abstract translation: 这里公开了一种用于使用两个测量头获取待测物体的位置坐标的装置和使用该装置的方法。 用于获取物体的位置坐标的装置包括用于分别检测与待测物体相对应的信号的两个测量头，用于将两个测量头彼此面对地放置在一起的测量头固定单元， 用于旋转测量头固定单元的可旋转结构;以及位置确定单元，用于基于由测量头检测到的两个检测信号的强度来获取待测对象的位置坐标。