基于配对螺旋式多模纤维的定向扭转传感器.
Wenlei Yang1, Ke Tian2, Le Li1
1College of Information and Intelligence Engineering, Zhejiang Wanli University, Ningbo 315100, China.
Sensors (Basel, Switzerland)
|April 12, 2025
概括
这项研究介绍了一种新的光纤扭转传感器,可以区分扭转方向. 传感器采用单模扭转多模单模光纤结构,提供精确的扭转测量,温度干扰最小.
科学领域:
- 光电学是指光电子产品.
- 光纤光学是指光纤的使用.
- 传感器技术 传感器技术
背景情况:
- 扭矩传感在各种工业应用中至关重要.
- 现有的扭转传感器往往会受到温度交叉敏感性的影响.
- 开发具有高精度的定向扭转传感器是一个持续的挑战.
研究的目的:
- 为了展示一种能够进行方向歧视的新型光纤扭矩传感器.
- 为了研究拟议的传感器的性能特征.
- 为了评估传感器对温度变化的敏感性.
主要方法:
- 制造一个单模扭转多模单模 (STMS) 纤维结构.
- 融合拼接单模纤维 (SMF) 与一个扭曲的多模纤维 (MMF) 分段.
- 对共振波长在不同扭转速率和方向下变化的实验分析.
- 量化波长和传输灵敏度的量化.
- 评估温度交叉通话的情况.
主要成果:
- 该STMS光纤传感器成功地区分了顺时针和逆时针方向的扭转.
- 共振波长的变化与扭曲方向和大小相关.
- 测量的波长灵敏度: -1.38 nm/rad·m−1.1.
- 测量的传输灵敏度:3.12dB/rad·m-1.1. 这就是传输的灵敏度.
- 观察到的最小温度交叉值为0.0072 (rad/m) /°C.
结论:
- 开发的STMS光纤传感器提供了定向扭力测量功能.
- 该传感器具有高灵敏度和低温交叉灵敏度.
- 这项技术有望在温度波动的环境中进行精确的扭矩监测.
相关概念视频
01:18Magnetic Field Due to Two Straight Wires
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
01:15Unsymmetric Bending - Angle of Neutral Axis
Unsymmetrical bending occurs when a structural member is subjected to bending moments in a plane that does not align with the member's principal axes. This scenario typically arises in beams and other structural components when loads are applied at non-ideal angles, introducing complexities in stress analysis.
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal centroidal axes. The...
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal centroidal axes. The...
01:20Torsion in Vector Calculus
A toy train ascending a winding track that curves and tilts offers an intuitive view of torsion, a key geometric concept in the study of space curves. While curvature measures how sharply a path bends, torsion captures how the path twists out of the plane of bending. This twisting behavior is crucial in understanding three-dimensional motion and is precisely described using the Frenet–Serret framework.At each point along a space curve, the Frenet–Serret frame consists of three orthogonal unit...