公开(公告)号：WO2021006727A1

公开(公告)日：2021-01-14

申请号：PCT/NL2020/050429

申请日：2020-06-29

Applicant: TECHNISCHE UNIVERSITEIT DELFT

Inventor： ALIJANI, Farbod ,  STEENEKEN, Peter Gerard ,  KOTHARI, Nimit ,  KESKEKLER, Ata

IPC: G01G7/00 ,  G01G7/02

Abstract: Sensor (1) equipped with at least one magnet (2, 3) and a diamagnetic plate (4) levitating above said at least one magnet (2, 3), comprising actuation means (5, 6) to bring the 5 diamagnetic plate (4) into motion, and measurement means (7, 8) to measure the motion of the diamagnetic plate (4), wherein the sensor (1) comprises computing means (12) that are connected to the measurement means (7, 8), wherein the computing means (12) are arranged to derive from a measurement 10 by the measurement means (7, 8) a resonance frequency of the diamagnetic plate (4) while being loaded with an object (11), and to compare said resonance frequency with a calibrated frequency that corresponds to the diamagnetic plate's resonance frequency when the diamagnetic plate (4) is 15 unloaded, and to derive a parameter relating to the object (11) from a comparison of said resonance frequency and calibrated frequency.