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An Optical Method for the Rapid Measurement of Corrugated Plate Depth Based on Line Laser Sensor
Jie Chen1, Xudong Mao2, Xin Li1
1Institute of Special Equipment Inspection and Research, Jiangxi General Institute of Testing and Certification, Nanchang 330029, China.
Sensors (Basel, Switzerland)
|May 4, 2026
Summary
This study introduces a non-contact method for measuring corrugated heat exchanger plate depth, enhancing efficiency and accuracy. The system uses laser scanning and data reduction for precise corrugation depth extraction in manufacturing.
Area of Science:
- Mechanical Engineering
- Materials Science
- Manufacturing Technology
Background:
- Heat exchangers are crucial in many industrial processes.
- Accurate measurement of corrugated plate geometry is vital for performance.
- Current methods may lack efficiency or precision for automated inspection.
Purpose of the Study:
- To develop a non-contact depth detection method for corrugated heat exchanger plates.
- To improve measurement efficiency and accuracy in automated inspection.
- To provide a practical solution for surface morphology analysis.
Main Methods:
- Integration of a line laser sensor with a linear guide rail for 2D profile acquisition.
- Multi-stage data reduction using angle-chord height criterion and spline-based filtering.
- Two-stage feature recognition algorithm with B-spline fitting and binary search for depth extraction.
Main Results:
- Successful high-resolution 2D surface profile acquisition.
- Effective data reduction preserving key geometric features.
- Accurate extraction of corrugation depth parameters through precise peak and valley detection.
Conclusions:
- The proposed non-contact method offers a high balance between speed and precision.
- This technique provides a reliable solution for automated surface morphology inspection.
- The method is suitable for quality control in heat exchanger manufacturing.
