公开(公告)号：WO2021144641A1

公开(公告)日：2021-07-22

申请号：PCT/IB2020/062307

申请日：2020-12-21

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： ALCHEIKH, Nouha ,  BEN MBAREK, Sofiane ,  YOUNIS, Mohammad

IPC: G01R33/028 ,  G01R33/0286

Abstract: A method for measuring a magnetic field with a micro-sensor system (200) includes applying (1700) a direct current (ITh) to a curved micro-beam (110) to control a stiffness of the curved micro-beam (110); placing (1702) the micro-sensor system (200) into an external magnetic field (B); selecting (1704) with a controller (130), based on an expected value of the external magnetic field (B), a given resonant frequency of the micro-beam (110); measuring (1706) with a resonant frequency tracking device (150) the given resonant frequency of the micro-beam (110); and calculating (1706) in the controller (130) the external magnetic field (B), based on (1) the measured resonant frequency, (2) the applied current (ITh), and (3) calibration data stored in the controller (130). The calibration data is indicative of a dependency between a change of the selected resonant frequency and the external magnetic field.