Stereo Vision-Based Steel Sheet Width Measurement System

Continuous and Accurate Steel Sheet Width Measurement Using Machine Vision and Advanced Image Processing

In steel sheet production lines, excessive variations in product width can lead to increased material waste, higher production costs, and products that do not meet customer specifications.

For this reason, operators need accurate and continuous dimensional data during the rolling process so that dimensional variations can be identified and controlled quickly.

Fanavar Fartak Espadana’s steel sheet width measurement system uses industrial machine vision and high-precision image processing to continuously measure sheet width and provide operators with real-time measurement data.

The Problem

Excessive variations in steel sheet width can increase material consumption and waste, raise production costs, and increase the likelihood of delivering products that do not meet customer specifications.

Therefore, obtaining accurate and continuous sheet width data during the rolling process is essential for dimensional quality control.

Fanavar Fartak Espadana’s Solution

The system uses industrial machine vision to continuously measure the width of the steel sheet and display its width profile to the operator in real time.

Upper and lower tolerance limits can be defined for the sheet width, allowing operators to respond quickly to dimensional deviations.

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System Benefits

High-Accuracy Measurement

Steel sheet width is measured with an approximate accuracy of 0.1 mm.

Continuous Inline Measurement

Product width is continuously measured along the length of the sheet, allowing the operator to monitor variations in real time.

Reduced Production Waste

The rapid identification of dimensional deviations supports improved process control and helps reduce the production of out-of-tolerance products.

Non-Contact Quality Control

Measurements are performed using a machine vision system without requiring physical contact with the steel sheet.

Production Data Logging

Measurement data is recorded and can be used for quality control and production process analysis.

Technologies Used

  • Industrial Machine Vision
  • High-Precision Image Processing
  • Edge Detection Algorithms
  • High-Resolution Imaging
  • Specialized Backlighting

System Capabilities

  • Continuous steel sheet width measurement
  • Non-contact measurement
  • Real-time display of the sheet width profile
  • Configurable upper and lower tolerance limits
  • Alerts for dimensional deviations
  • Production data logging
  • Provision of dimensional data to operators during production

Key Specifications

  • Approximate measurement accuracy of 0.1 mm
  • Continuous width measurement along the length of the sheet
  • Real-time graphical display of the width profile
  • Configurable dimensional tolerance ranges and alerts
  • Production data logging

System Innovation

The system uses a specialized backlighting configuration that creates clearly defined edges along the steel sheet.

Combined with high-precision image processing algorithms, this configuration enables continuous, accurate, and non-contact measurement of steel sheet width.

The resulting data can be used for dimensional quality control, process optimization, waste reduction, and preventive maintenance support.

Target Customers and Market

The system is designed for steel sheet and strip producers and can be used in production lines that require continuous and accurate product width measurement.

The system has been developed and commercialized for industrial use. It also has potential applications in both domestic and international markets.