公开(公告)号：US20240130654A1

公开(公告)日：2024-04-25

申请号：US18461782

申请日：2023-09-05

Applicant: Ricoh Company, Ltd. ,  KANAZAWA INSTITUTE OF TECHNOLOGY

Inventor： Takashi YASUI ,  Ryoh MAEDA ,  Daisuke OYAMA ,  Yoshiaki ADACHI

IPC: A61B5/243 ,  A61B5/245

CPC classification number: A61B5/243 ,  A61B5/245 ,  G01R33/0356

Abstract: A biomagnetic field measurement device to measure a biomagnetic field includes a superconducting quantum interference device (SQUID) sensor, and includes a flux locked loop unit. The SQUID sensor includes an adjustment device configured to adjust a loop gain of the flux locked loop unit.

公开(公告)号：US20240225508A9

公开(公告)日：2024-07-11

申请号：US18461782

申请日：2023-09-06

Applicant: Ricoh Company, Ltd. ,  KANAZAWA INSTITUTE OF TECHNOLOGY

Inventor： Takashi YASUI ,  Ryoh MAEDA ,  Daisuke OYAMA ,  Yoshiaki ADACHI

IPC: A61B5/243 ,  A61B5/245

CPC classification number: A61B5/243 ,  A61B5/245 ,  G01R33/0356

Abstract: A biomagnetic field measurement device to measure a biomagnetic field includes a superconducting quantum interference device (SQUID) sensor, and includes a flux locked loop unit. The SQUID sensor includes an adjustment device configured to adjust a loop gain of the flux locked loop unit.

公开(公告)号：US20220057470A1

公开(公告)日：2022-02-24

申请号：US17413887

申请日：2020-01-09

Applicant: TDK Corporation ,  Kanazawa Institute of Technology

Inventor： Tomohiko SHIBUYA ,  Yoshiaki ADACHI

IPC: G01R35/00 ,  G01R33/09

Abstract: A magnetic field calibration device is used to calibrate a magnetism measurement device having a plurality of magnetic sensors and includes a first holder having a first holding surface, a second holder having a second holding surface having a fixed relative positional relation with the first holding surface, and magnetism generating parts fixed to the first holding surface and the second holding surface. Thus, calibration can be completed with a single operation by assigning the first and second holding surfaces of the magnetic field calibration device respectively to the first and second measurement surfaces of the magnetism measurement device. In addition, since the relative positional relation between the first and second holding surfaces is fixed, measurement results obtained from the individual measurement surfaces match each other.