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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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Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
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使用高精度超声波电机设计全方位电容传感器扩展仪.

Chen Dou1,2, Wenbo Wang1, Hong Li1

  • 1Ministry of Emergency Management, National Institute of Natural Hazards, Beijing 100085, China.

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|February 26, 2025
PubMed
概括

本研究介绍了一种全新的全范围电容传感器延伸计,用于精确地形变形监测. 创新的设计克服了传统传感器的范围限制,确保对地质事件进行可靠的微型移位测量.

关键词:
在PID控制中,PID控制器电容传感器是一种传感器.延伸计的延伸计可以使用.测量范围的扩展测量范围的扩展地形变形观察地形变形的观察.超声波电机的超声波发动机.

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Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique
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科学领域:

  • 地质物理学和岩石力学 岩石力学
  • 仪器仪表与测量科学 仪器仪表与测量科学

背景情况:

  • 使用旋流或微分变压器传感器的传统延伸仪面临着影响高精度地形变形监测的结构限制.
  • 容量型微位移传感器提供高精度,但其测量范围有限,阻碍了对地震和山体滑坡等快速地质事件的实时捕捉.

研究的目的:

  • 开发一种全新的全范围电容传感器延伸度计,克服现有的微位移传感器的范围限制.
  • 提高地形变形监测对地质现象的稳定性,准确性和可靠性.

主要方法:

  • 高精度超声波电机与高灵敏度电容传感器的集成.
  • 整合了格子尺度和比例整数导数 (PID) 控制算法以进行自适应校正.
  • 实时信号处理以确保广泛的测量范围和更好的稳定性.

主要成果:

  • 实现了2.0 × 10-11的高分辨率.
  • 证明了0.024%的优异线性和0.06%的校准可重复性.
  • 通过实验室实验和现场观测验证了性能,满足了严格的地形变形观测要求.

结论:

  • 新型全方位电容传感器延伸仪为地形变形监测中的微位移测量提供了强大的解决方案.
  • 这种进步提高了观察地质现象的可靠性,并为岩石力学技术做出了贡献.