Sul Onejae, Choo Sung Joong, Jee In-Sik, Kim Jeengi, Kim Hyeong-Jun
CK Materials Lab Co., Ltd., Ansan-si 15657, Gyeonggi-do, Republic of Korea.
Micromachines (Basel). 2024 Sep 30;15(10):1221. doi: 10.3390/mi15101221.
In this article, we report a novel pressure sensing method based on the Hall effect and a hard magnet magnetorheological elastomer (hmMRE). The elastic property of the MRE under pressure was used to generate spatial variation in the magnetic flux density around the MRE, and the variation was detected by the Hall effect device underneath. As the first development in this kind of pressure sensing mechanism, we conducted research for the following three purposes: (1) to verify the Hall effect on the output signal, (2) to understand the sensor output variations under different modes of operation, and (3) to utilize the mechanism as a pressure sensor. We characterized the sensor with its operation parameters, such as signal polarity switching depending on wiring directions, signal amplitude, and offset shift depending on the input voltage. Based on the analyses, we concluded that the Hall voltage represents the pressure applied on the hmMRE, and the new pressure sensing mechanism was devised successfully.
在本文中，我们报告了一种基于霍尔效应和硬磁磁流变弹性体（hmMRE）的新型压力传感方法。利用磁流变弹性体在压力下的弹性特性，在其周围产生磁通密度的空间变化，并由下方的霍尔效应装置检测该变化。作为这种压力传感机制的首次开发，我们出于以下三个目的进行了研究：（1）验证霍尔效应在输出信号上的作用；（2）了解不同操作模式下传感器输出的变化；（3）将该机制用作压力传感器。我们通过其操作参数对传感器进行了表征，例如信号极性根据布线方向的切换、信号幅度以及根据输入电压的偏移变化。基于分析，我们得出结论，霍尔电压代表施加在硬磁磁流变弹性体上的压力，并且成功设计出了新的压力传感机制。
