Noncontact Laser Inspection Based on a PSD for the Inner Surface of Minidiameter Pipes
IEEE Transactions on Instrumentation and Measurement（2009）
摘要
A new noncontact laser-inspection technique based on a position-sensitive detector (PSD) to inspect the inner surface of minidiameter pipes is proposed, and the corresponding sensor is developed. A light spot is projected onto the pipe inner wall after the laser beam is reflected by two mirrors. At the same time, four current signals are produced when the light spot is read by the 2-D PSD. Accordi...
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关键词
Inspection,Surface emitting lasers,Laser beams,Surface fitting,Surface reconstruction,Position sensitive particle detectors,Mirrors,Sensor systems,Micromotors,Least squares methods
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