SENSOR SYSTEM COMPRISING OFFAXIS INSENSITIVE MULTIPOLE MAGNET

• Main Authors: DEPOORTER JEAN-CLAUDE, BURSSENS JAN-WILLEM, BIDAUX YVES
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2019
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

A sensor system comprising an offaxis insensitive multipole magnet is provided. The sensor system (1) comprises a magnetic field generator (2) and a sensor device (3) arranged at a distance (dz) fromsaid magnetic field generator (2) and adapted for measuring or determining at least one magnetic field component and/or at least one magnetic field gradient component. The magnetic field generator (2)comprises a multi-pole magnet (12) having a number N of pole pairs that are axially magnetized to generate an N-pole magnetic field that is substantially rotationally symmetric around an axis (5). The magnet comprises a plurality of grooves (14) and/or elongate protrusions that are arranged in a rotationally symmetric pattern around the axis (5) to provide a substantially constant magnetic fieldgradient in a central region around said axis (5). 本申请提供了包括偏轴不灵敏多极磁体的传感器系统。一种传感器系统(1)，包括：磁场发生器(2)；以及传感器设备(3)，所述传感器设备被布置在距所述磁场发生器(2)一定距离(dz)处，并且被适配用于测量或确定至少一个磁场分量和/或至少一个磁场梯度分量。所述磁场发生器(2)包括具有N个数量的极对的多极磁体(12)，所述极对被轴向磁化以生成围绕轴线(5)基本