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Related Concept Videos

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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As leveling involves measuring vertical distances relative to a horizontal line of sight, it requires a graduated rod, called a level rod, for vertical measurements and an instrument called a level for a horizontal sight line. A level includes a high-powered telescope with a mechanism for leveling to ensure the line of sight is horizontal when the bubble in the spirit level is centered. Leveling rods, made of wood, metal, or fiberglass, are graduated in feet or meters and commonly used in two-...

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Microwave Fill Level Inspection System for Industrial Packaged Products.

Calin I Maraloiu1, Jorge A Tobón Vasquez2, Marco Ricci2

  • 1Department of Electronics and Telecommunications, Politecnico di Torino, 10129 Torino, Italy.

Sensors (Basel, Switzerland)
|December 31, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a new microwave-based system for accurate fill level control in packaged products. The technology ensures product conformity and brand trust by inspecting fill levels on production lines.

Keywords:
microwave antennasmicrowave propagationmicrowave sensorsvivaldi antennas

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Area of Science:

  • Industrial Engineering
  • Electromagnetics
  • Quality Control

Background:

  • Accurate fill level control is crucial for industrial product inspection, ensuring content conformity and maintaining brand trust.
  • Selecting appropriate fill level inspection technology depends heavily on product content and packaging material properties.
  • Existing methods may face limitations with diverse product types and packaging materials.

Purpose of the Study:

  • To propose and evaluate a novel microwave-based system for industrial fill level inspection.
  • To demonstrate the system's effectiveness across various liquid products (water, oil, alcohol-based).
  • To assess the system's performance in real-time processing at production speeds.

Main Methods:

  • Development of a microwave inspection system utilizing two Vivaldi antennas.
  • System operation frequency range: 1 to 18 GHz.
  • Testing on water, oil, and alcohol-based products conveyed at production speed.

Main Results:

  • The microwave system achieved good accuracy in classifying fill levels.
  • Efficient real-time fault rejection was demonstrated.
  • The system proved applicable to diverse liquid products and packaging.

Conclusions:

  • Microwave-based inspection offers a viable and accurate solution for fill level control in industrial packaging.
  • The proposed system effectively addresses challenges related to varying product and packaging materials.
  • Real-time performance enables seamless integration into high-speed production lines.