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相关概念视频

Energy Stored In A Coaxial Cable01:31

Energy Stored In A Coaxial Cable

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A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic field...
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Cable Subjected to Concentrated Loads01:28

Cable Subjected to Concentrated Loads

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Flexible cables are commonly used in various applications for support and load transmission. Consider a cable fixed at two points and subjected to multiple vertically concentrated loads. Determine the shape of the cable and the tension in each portion of the cable, given the horizontal distances between the loads and supports.
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相关实验视频

Updated: May 3, 2026

Wideband Optical Detector of Ultrasound for Medical Imaging Applications
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使用DAS对音响敏感光缆进行分布式形状检测.

Boqi Chen, Zhaoyong Wang, Junqi Yang

    Optics letters
    |June 14, 2024
    PubMed
    概括

    本研究引入了一种用于使用分布式声学传感 (DAS) 进行分布式声学敏感光缆 (ASOC) 形状检测的新方法. 这一突破使得用于水下监测应用的精确3D定位成为可能.

    科学领域:

    • 海洋学 海洋学 海洋学
    • 声学 声学 在声学方面
    • 光学工程是指光学工程.

    背景情况:

    • 声敏光缆 (ASOC) 对于水下声学监测至关重要.
    • 对ASOC的精确形状检测对于各种海洋应用至关重要.
    • 现有的方法在分布式形状检测准确度方面存在局限性.

    研究的目的:

    • 展示使用分布式声学传感 (DAS) 技术的分布式ASOC形状检测方法.
    • 为了实现ASOC单元的精确三维 (3D) 定位.
    • 为ASOC形状检测性能建立一个新的基准.

    主要方法:

    • 利用分布式声学传感 (DAS) 技术进行ASOC形状检测.
    • 使用自适应性峰值分配算法来确定ASOC单元的3D位置.
    • 来自辅助声源的集成先前位置信息.

    主要成果:

    • 通过使用DAS.成功展示了分布式ASOC形状检测.
    • 实现了ASOC单位的精确3D定位.
    • 在形状检测中报告了6.53厘米的初步错误.

    结论:

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    • 本文介绍了使用DAS.分布式ASOC形状检测的第一个已知的成果.
    • 开发的方法大大推进了ASOC应用.
    • 潜在的应用包括增强的水下目标检测和拖阵列校正.