一个基于霍尔效应的力传感机制,用于在磁共振成像扫描仪内部的力传感
Yen-Chun Chen1, Ran Hao1, Adam Thompson1
1Department of Electrical, Computer, and Systems Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
IEEE sensors letters
|August 18, 2025
概括
这项研究引入了一种MRI安全的力传感器,该传感器使用在横向光束上的霍尔效应传感器. 它通过检测磁流密度变化,准确地测量3特斯拉MRI扫描仪内的力.
科学领域:
- 生物医学工程 生物医学工程
- 医学成像物理 医学成像物理
- 传感器技术 传感器技术
背景情况:
- 磁共振成像 (MRI) 系统产生强大的静电磁场,这给集成电子传感器带来了挑战.
- 精确的力测量对于各种MRI引导程序和机器人应用至关重要.
- 现有的力传感器可能与MRI扫描仪内的高磁场不兼容.
研究的目的:
- 提出和评估一种基于霍尔效应的新型力传感机制,可在MRI扫描仪中安全使用.
- 在3特斯拉的静态磁场下测量一个自由度的力.
- 评估拟议的MRI安全力传感器的准确性和可重复性.
主要方法:
- 一个霍尔效应传感器被安装在一个悬臂梁的末端.
- 传感器的位置和方向在施加力时会发生变化.
- 霍尔效应传感器检测到磁流密度的变化,产生与施加力成比例的输出电压.
- 为了测试传感器在3特斯拉MRI环境中的性能,进行了实验.
主要成果:
- 基于霍尔效应的机制成功测量了MRI扫描仪磁场内的力.
- 传感器的输出电压显示出与施加的力大致成比例的关系.
- 最初的实验表明了准确和可重复的力测量的潜力.
结论:
- 基于霍尔效应的力传感机制可以在3特斯拉MRI扫描仪中安全有效地使用.
- 这项技术为MRI指导干预中的力反提供了一个有希望的解决方案.
- 建议进行进一步的验证,以充分描述传感器的性能.
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