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Microprocessor-based phase determination for high-resolution optical sensors

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2 Author(s)
Bertholds, A. ; Université de Neuch¿tel, Institut de Microtechnique, Neuch¿tel, Switzerland ; Dÿndliker, R.

A microprocessor-controlled phase measuring system for high-resolution optical sensors is described. An automatic calibration procedure provides drift compensation and long-term accuracy. Using a 12 bit A/D convertor, phase interpolation with a resolution of 0.12° (~1/3000 of a period) is demonstrated.

Published in:

Electronics Letters  (Volume:21 ,  Issue: 2 )