Wang Jiaqi, Xie Hang, Wu Yihong
Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore.
National University of Singapore (Chong Qing) Research Institute, Chongqing Liang Jiang New Area, Chongqing 401123, China.
Sensors (Basel). 2024 Feb 4;24(3):1011. doi: 10.3390/s24031011.
Magnetic position sensors have extensive applications in various industrial sectors and consumer products. However, measuring angles in the full range of 0-360° in a wide field range using a single magnetic sensor remains a challenge. Here, we propose a magnetic position sensor based on a single Wheatstone bridge structure made from a single ferromagnetic layer. By measuring the anisotropic magnetoresistance (AMR) signals from the bridge and two sets of anomalous Nernst effect (ANE) signals from the transverse ports on two perpendicular Wheatstone bridge arms concurrently, we show that it is possible to achieve 0-360° angle detection using a single bridge sensor. The combined use of AMR and ANE signals allows a mean angle error in the range of 0.51-1.05° within a field range of 100 Oe-10,000 Oe to be achieved.
磁位置传感器在各个工业领域和消费产品中有着广泛的应用。然而，使用单个磁传感器在宽磁场范围内测量0 - 360°的全角度仍然是一个挑战。在此，我们提出一种基于由单个铁磁层制成的单惠斯通电桥结构的磁位置传感器。通过同时测量来自电桥的各向异性磁电阻（AMR）信号以及来自两个垂直惠斯通电桥臂上横向端口的两组反常能斯特效应（ANE）信号，我们表明使用单个电桥传感器实现0 - 360°角度检测是可行的。AMR和ANE信号的联合使用使得在100 Oe - 10,000 Oe的磁场范围内能够实现平均角度误差在0.51 - 1.05°的范围。
