Title :
An overview and a contribution to the optical measurement of linear displacement
Author :
Girão, Pedro M B Silva ; Postolache, Octavian A. ; Faria, José A Brandao ; Pereira, José M C Dias
Author_Institution :
Instituto de Telecomunicacoes, Lisbon, Portugal
fDate :
12/1/2001 12:00:00 AM
Abstract :
The present work is a contribution to the field of linear displacement measurements by optical means. For that purpose, a brief overview of some existing solutions is presented and two systems for axial linear displacement measurement based on light intensity detection are introduced. The systems have redundancy and were designed with the purpose of achieving identification and automatic correction of errors arising from inadvertent angular variations between the sensor and the light beam positions
Keywords :
displacement measurement; light interferometry; optical sensors; redundancy; automatic correction; axial measurement; identification; inadvertent angular variations; interferometry; light beam positions; light intensity detection; linear displacement; optical measurement; redundancy; Displacement measurement; Error correction; Intensity modulation; Laser beams; Optical interferometry; Optical modulation; Optical sensors; Position measurement; Redundancy; Sensor systems;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/7361.983472
