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相关概念视频

Pipe Flowrate Measurement01:28

Pipe Flowrate Measurement

815
In pipe flow measurement, orifice, nozzle, and Venturi meters are commonly used to determine fluid flowrates by constricting the flow area, which increases fluid velocity and reduces pressure. This pressure difference, governed by Bernoulli's principle and adjusted for real-world conditions, is essential for calculating flowrate. Each meter type is suited to specific applications based on accuracy, efficiency, and compatibility with various flow conditions.
The orifice meter is a simple,...
815
Pipe Flowrate Measurement: Problem Solving01:28

Pipe Flowrate Measurement: Problem Solving

602
A spray tank system is engineered to uniformly distribute a pest-control liquid across plants by using a pressurized mechanism. The tank, pressurized to 150 kPa, holds the pesticide at a height of 0.80 meters. Liquid flows from the tank through a 1.9 meter pipe with a diameter of 0.015 meters, angled at 0.698 radians, ultimately reaching a 0.007 meter nozzle that sprays the pesticide. Accurate calculation of the system's flow rate is crucial to ensure uniform application, and this is...
602
Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

121
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...
121

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相关实验视频

Updated: Sep 15, 2025

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition
05:11

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

Published on: June 27, 2025

219

通过复杂的可编程逻辑设备基于波形识别的空管检测高精度电磁流量计.

Zhenxing Wang1, Zhihan Yang2

  • 1School of Computer and Information Engineering, Shanghai Polytechnic University; zxwang@sspu.edu.cn.

Journal of visualized experiments : JoVE
|July 14, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种改进的电磁流量计,具有优化的波形和信号处理,以实现高精度. 改进的设计实现了0.1%的精度和可靠的空管检测,这对于工业流量测量至关重要.

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Tuning a Parallel Segmented Flow Column and Enabling Multiplexed Detection
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Parameterizing V-notch Weir Equations for Flow Monitoring in a Drainage Control Structure
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Parameterizing V-notch Weir Equations for Flow Monitoring in a Drainage Control Structure

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相关实验视频

Last Updated: Sep 15, 2025

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition
05:11

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

Published on: June 27, 2025

219
Tuning a Parallel Segmented Flow Column and Enabling Multiplexed Detection
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科学领域:

  • 工程 工程师 工程师 工程师
  • 测量科学 测量科学 测量科学

背景情况:

  • 传统的电磁流量计由于外部干扰和速度分布不均,因此受到精度限制.
  • 这些局限性阻碍了各种工业应用中精确的流量测量.

研究的目的:

  • 开发一个改进的电磁流量计,提高准确性和可靠性.
  • 通过优化信号处理和硬件设计,解决传统流量计的局限性.

主要方法:

  • 优化激发驱动波形,以提高信号质量.
  • 电极输入信号的多个过和放大阶段.
  • 使用复杂可编程逻辑设备 (CPLD) 进行快速切换和平稳的信号纠正.
  • 实施软件过技术和模式识别,用于检测空管.

主要成果:

  • 在0.1-15m/s的流速范围内,达到0.1%的高精度.
  • 证明系统可重复性错误小于1%.
  • 成功实现了空管检测功能.

结论:

  • 拟议的方法显著提高了电磁流量计的精度.
  • 改进的设计提供了高精度的流量测量与最小的额外成本.
  • 这些发现对于需要精确流量监控的工业应用具有高度相关性.