公开(公告)号：US20210244328A1

公开(公告)日：2021-08-12

申请号：US17160078

申请日：2021-01-27

申请人： HI LLC

发明人： Julian Kates-Harbeck ,  Vincent Maurice ,  Ricardo Jimenez-Martinez ,  Jamu Alford ,  Benjamin Shapiro

IPC分类号： A61B5/245 ,  G01R35/00 ,  A61B5/00

摘要： A calibration system for a magnetometer having an unknown gain is disclosed. A calibration magnetic field is generated at a calibration frequency of a known amplitude at the magnetometer. A measurement of the calibrating magnetic field is reported by the magnetometer. A ratio of an amplitude of the calibration magnetic field measurement reported by the magnetometer and the known amplitude of the calibrating magnetic field at the magnetometer is computed. The unknown gain of the magnetometer is determined at least partially based on computed ratio.

公开(公告)号：US11872042B2

公开(公告)日：2024-01-16

申请号：US17160078

申请日：2021-01-27

申请人： HI LLC

发明人： Julian Kates-Harbeck ,  Vincent Maurice ,  Ricardo Jimenez-Martinez ,  Jamu Alford ,  Benjamin Shapiro

IPC分类号： A61B5/245 ,  G01R35/00 ,  A61B5/00

CPC分类号： A61B5/245 ,  A61B5/6803 ,  G01R35/007 ,  A61B2560/0223 ,  A61B2562/0223

摘要： A calibration system for a magnetometer having an unknown gain is disclosed. A calibration magnetic field is generated at a calibration frequency of a known amplitude at the magnetometer. A measurement of the calibrating magnetic field is reported by the magnetometer. A ratio of an amplitude of the calibration magnetic field measurement reported by the magnetometer and the known amplitude of the calibrating magnetic field at the magnetometer is computed. The unknown gain of the magnetometer is determined at least partially based on computed ratio.