Title :
A low cost high resolution optical position sensor
Author :
Gonnason, W.R. ; Haslett, J.W. ; Trofimenkoff, F.N.
Author_Institution :
Alberta Microelectron. Centre, Calgary, Alta., Canada
fDate :
8/1/1990 12:00:00 AM
Abstract :
A fast high-resolution analog position sensor that provides real-time analog output corresponding to the position of the centroid of a diffuse optical source focused on its surface, is described. Theoretical performance equations are presented. Linear and two-dimensional position sensors have been fabricated and tested to verify the basic theory. Analytic results for system static transfer function and transient response are presented and verified experimentally for a 3-μm p-well CMOS process. The main component sensitivities are identified and verified using computer-aided modeling techniques
Keywords :
CMOS integrated circuits; analogue circuits; electric sensing devices; linear integrated circuits; photodetectors; position measurement; 3 micron; analog position sensor; centroid; computer-aided modeling; diffuse optical source; high resolution optical position sensor; linear sensor; p-well CMOS process; real-time analog output; static transfer function; transient response; two-dimensional position sensors; Acoustic sensors; CMOS process; Charge coupled devices; Costs; Detectors; Equations; Laser applications; Microelectronics; Optical sensors; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
