Workpiece thickness detection method based on improved peak recognition
The invention discloses a workpiece thickness detection method based on improved peak recognition. The method comprises the following steps: step one, calculating a propagation speed of an ultrasonicecho signal in a workpiece; step two, setting a wave crest starting position for the acquired ultraso...
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Main Authors | , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
26.11.2019
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a workpiece thickness detection method based on improved peak recognition. The method comprises the following steps: step one, calculating a propagation speed of an ultrasonicecho signal in a workpiece; step two, setting a wave crest starting position for the acquired ultrasonic echo signal waveform of the measured workpiece, determining the position of a point corresponding to a maximum value after the position as a first wave crest point, setting a minimum distance between peaks, determining a maximum value according to the position of the first peak point plus the distance as the position of a second wave crest point, and acquiring a time difference t' between two wave crest points based on the positions of the two adjacent wave crest points, and calculating a thickness value of the measured workpiece; step three, stopping a gate at a previous position under the condition of changing the waveform greatly, that is, changing the thickness suddenly and only measuring a last thickness v |
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Bibliography: | Application Number: CN201910723328 |