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Related Concept Videos

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

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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...
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Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
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An ammeter is a current measuring instrument. In the circuit, it is represented by the symbol A. The ammeter is placed in series with the device or component to measure the current. A series connection is used because objects in series have the same current passing through them. If a circuit has multiple resistors and the current needs to be measured in each resistor, the number of ammeters required depends on whether the circuit is in series or parallel.
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In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
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The Y-to-Y Circuit01:19

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In a balanced four-wire wye-to-wye system, the arrangement involves wye-connected sinusoidal voltage sources and loads, connected through a neutral wire that links the neutral nodes of the source and load. The load impedance is connected across each phase of the load. The wye-connected source can be connected to the wye-connected load in four-wire and three-wire arrangements. A three-phase system is considered balanced when the load on each phase is equal, leading to uniform current flow and...
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Coulometry is one of the rapid, most accurate, and precise analytical techniques that determine the quantity of an analyte by measuring the electrical charge needed for its complete electrolysis without using any analytical standards. The total charge passed during electrolysis correlates with the analyte amount by Faraday's laws of electrolysis. For accurate coulometric measurements, a charge equal to Faraday's constant multiplied by the number of electrons involved in the relevant...
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Pointer Meter Reading Method Based on YOLOv8 and Improved LinkNet.

Xiaohu Lu1, Shisong Zhu1, Bibo Lu1

  • 1School of Computer Science and Technology, Henan Polytechnic University, Jiaozuo 454003, China.

Sensors (Basel, Switzerland)
|August 29, 2024
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Summary
This summary is machine-generated.

This study introduces an improved LinkNet model for efficient pointer meter reading. The method enhances accuracy and speed for automated meter reading applications.

Keywords:
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Area of Science:

  • Computer Vision
  • Machine Learning

Background:

  • Pointer meter reading can be inefficient and prone to errors.
  • Automated reading systems require robust image processing techniques.

Purpose of the Study:

  • To develop an accurate and efficient automated pointer meter reading method.
  • To improve the performance of segmentation and angle prediction for meter readings.

Main Methods:

  • Utilized YOLOv8 for meter dial detection.
  • Implemented an improved LinkNet with partial convolution and attention mechanisms (CBAM, AFF).
  • Employed a classification and regression approach for accurate rotation angle prediction.

Main Results:

  • Achieved a mean absolute error of 0.20 for meter readings.
  • Reached a processing frame rate of 15 frames per second.
  • Demonstrated enhanced feature extraction and reduced model size.

Conclusions:

  • The proposed LinkNet-based method significantly improves pointer meter reading accuracy and efficiency.
  • The integration of partial convolution, attention modules, and refined angle prediction contributes to robust performance.