Title :
Microprocessor-based phase determination for high-resolution optical sensors
Author :
Bertholds, A. ; D¿¿ndliker, R.
Author_Institution :
Université de Neuch¿tel, Institut de Microtechnique, Neuch¿tel, Switzerland
Abstract :
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.
Keywords :
computerised instrumentation; nonelectric sensing devices; optical variables measurement; phase measurement; 12 bit A/D convertor; automatic calibration; drift compensation; high-resolution optical sensors; long-term accuracy; microprocessor-controlled phase measuring system; phase interpolation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850045
