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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
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Three-dimensional Optical-resolution Photoacoustic Microscopy
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单射式多灵敏分布式声学传感器与硬件包裹检索加速.

Yixuan Wang, Junfeng Jiang, Kun Liu

    Optics express
    |November 14, 2024
    PubMed
    概括

    本研究介绍了一种硬件辅助的分布式声学传感 (DAS) 方法. 它显著减少了数据处理时间,并扩大了地震波观测的动态测量范围.

    科学领域:

    • 地质物理学 地质物理学
    • 光学传感技术的技术

    背景情况:

    • 分布式声学传感 (DAS) 提供了密集的地震网络功能,但面临着大数据量和有限的动态范围的挑战.
    • 由于大量的原始数据,当前的DAS系统难以满足存储需求和调节速度.
    • 传统DAS的固定应变灵敏度限制了其测量广泛地震信号幅度的能力.

    研究的目的:

    • 开发一种新的单射,多灵敏度分布式声学传感 (DAS) 方法.
    • 在实际的DAS应用中解决数据量和动态范围的局限性.
    • 提高DAS在复杂环境和实时检测场景中的效率和适用性.

    主要方法:

    • 实施了硬件过模块,以实现更低的采样率,减少数据采集和处理时间.
    • 产生了多个带宽变化的侧带脉冲 (20,40和80 MHz),用于多灵敏度检测.
    • 使用一次性方法来简化数据采集和调节过程.

    主要成果:

    • 单侧带脉冲检测的平均处理时间缩短了大约20倍 (从214.79秒到9.83秒).
    • 通过不同带宽的硬件过,调制脉冲启用了多灵敏度应变事件检测.
    • 证明了在不同范围的应变事件中恢复地震信号的能力.

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    结论:

    • 拟议的硬件辅助多灵敏度DAS方法有效地减轻了数据存储和处理速度的挑战.
    • 这种创新方法扩大了DAS系统的动态测量范围.
    • 该方法在要求苛刻的环境中为实时地震监测提供了一个有希望的解决方案.