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An area and power efficient pulse-shrinking delay-line time-to-digital converter (TDC) using a 2-step conversion scheme is presented. The proposed TDC quantizes time variables using a coarse pulse-shrinking TDC with a large per-stage time shrinkage and a fine pulse-shrinking TDC with a small per-stage time shrinkage. It offers low power and silicon consumption, and good linearity without sacrificing...
In this paper, we describe the development and implementation of mono laser vision system which is used to measure large scale panels with various beveled-edges in the ship-building processes. Our laser vision system comprises of a mono camera including 4 laser-diodes and an optical band pass filter using triangulation technique. As clearly seen from this configuration, we can use only one camera...
This paper describes an automatic weld seam tracking method of stainless steel pipe welding machine. Due to the complexity of the pipe groove shape, it is difficult to find a seam and operate a torch manually in the pipe welding process. So, the laser vision system for seam tracking is designed for sensing the seam position and controlling a torch automatically. To achieve precise seam tracking, the...
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