Motion measurement method and apparatus applied to large multi-paddle wave simulation system
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United States of America Patent
Stats
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Nov 26, 2019
Grant Date -
Oct 10, 2019
app pub date -
Sep 11, 2017
filing date -
Mar 17, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention belongs to the technical field of image measurement, and provides a motion measurement method and apparatus applied to a large multi-paddle wave simulation system. When the motion of the wave maker is measured, firstly site images are collected by the cameras; the mark point on each wave making paddle in the image processing boards is identified; and a central position is computed. Then, the central position is contrasted with the initial position to calculate displacement of the image plane and convert the displacement into the displacement on a physical space in combination with calibration parameters. Next, data is transmitted to the computer through the EtherCAT network, and coded identification is conducted on the data. Finally, comparative analysis is conducted on a measured value and a target value of the motion of the wave making paddle in the computer, thereby obtaining motion information of the wave maker. In the present invention, when the motion of the wave maker is measured, the problems of difficult target recognition and unstable motion tracking caused by nonuniform illumination in the experiment site as well as the problems of great time consumption of an image analysis algorithm and low efficiency of data transmission of multiple camera systems are fully considered.
First Claim
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International Classification(s)
- 2017 Application Filing Year
- G01M Class
- 1475 Applications Filed
- 1071 Patents Issued To-Date
- 72.62 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- G01M Class
- 0 % this patent is cited more than
- 6 Age
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|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 26, 2027 |
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