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

Volume

39

Issue

4

fYear

1990

fDate

8/1/1990 12:00:00 AM

Firstpage

658

Lastpage

663

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;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.57251

Filename

57251