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相关概念视频

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...

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相关实验视频

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A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
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基于并行外在的法布里-佩罗干扰仪的二维矢量光纤加速度计.

Ranyang Li, Keyan Wang, Lingjing Ran

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    概括
    此摘要是机器生成的。

    这项研究引入了一种新的光纤加速度计,用于检测二维加速度. 该设备表现出高灵敏度和定向精度,有望在石油和天然气勘探中应用.

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    科学领域:

    • 光子学和传感器技术技术
    • 机械工程 机械工程
    • 地质物理勘探地质物理勘探

    背景情况:

    • 精确测量加速对于各种工业应用至关重要.
    • 现有的加速度计可能在灵敏度,定向精度或结构复杂性方面存在局限性.
    • 光纤传感器提供优势,例如对电磁干扰的免疫力和遥感能力.

    研究的目的:

    • 提出和演示一种新的矢量光纤加速度计.
    • 为了研究其在检测二维平面加速方面的性能.
    • 评估其用于三维加速度测量和特定应用的潜力.

    主要方法:

    • 使用链结构的矢量光纤加速度计的设计.
    • 使用单模纤维和片反射器形成一个外部Fabry-Perot干扰仪 (EFPI) 腔.
    • 实验测试用于评估自然频率,灵敏度和定向精度.

    主要成果:

    • 加速度计实现了420赫兹的自然频率.
    • 灵敏度超过2600分钟/日.
    • 证明了对振动加速方向的良好识别,在二维平面上方向误差为4.1°.

    结论:

    • 拟议的光纤加速度计具有高灵敏度和简单的结构.
    • 它展示了有效的矢量检测能力,用于2D加速.
    • 集成与单元传感器进行3D测量的潜力,特别是在石油和天然气勘探中.