基于CMR-B-Scalar传感器的磁场测量仪用于测量微秒持续时间的磁场脉冲
Pavel Piatrou1, Voitech Stankevic1,2, Nerija Zurauskiene1,2
1Department of Functional Materials and Electronics, Center for Physical Sciences and Technology, Sauletekio ave. 3, LT-10257 Vilnius, Lithuania.
Sensors (Basel, Switzerland)
|April 28, 2025
概括
这项研究引入了一种精确的系统来测量高振幅,微秒脉冲磁场. 它使用了一种新型的巨大磁阻传感器,用于准确,独立于方向的测量,最高可达15特斯拉.
科学领域:
- 物理 物理学 物理
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
背景情况:
- 精确测量高振幅脉冲磁场对于各种科学和工业应用至关重要.
- 现有的方法经常面临干扰,方向依赖和有限的动态范围的挑战.
研究的目的:
- 开发和验证一种用于精确测量高振幅和微秒持续时间的脉冲磁场的新型系统.
- 为了利用巨大的磁阻 (CMR) 材料进行方向独立的磁场传感.
- 在测量过程中尽量减少干扰和寄生效应.
主要方法:
- 设计了一个系统,包括一个带有 CMR 显示 CMR 的 La-Sr-Mn-O 薄膜传感器的探针和一个专门的测量单元.
- 开发了两个版本的测量单元,在传感器距离<0.5m和>1m的放大器集成上有所不同.
- 双极脉冲电压应用于传感器以减轻电机力诱导.
- 数据采集涉及光纤链接到带有定制处理软件的PC.
主要成果:
- 拉-Sr-Mn-O CMR 传感器展示了精确的,独立于方向的磁场测量能力.
- 在脉冲磁场中成功测试了优化的薄膜组合.
- 该系统有效测量了高达15特斯拉的脉冲磁场,脉冲持续时间为20-30微秒.
- 通过系统设计和双极电压应用,实现了最小的干扰.
结论:
- 开发的系统为测量高振幅,微秒脉冲磁场提供了强大而准确的解决方案.
- 使用CMR化膜为磁场传感技术提供了显著的进步.
- 该系统的有效性通过15T的严格测试得到证实,证明了它对苛刻应用的潜力.
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