An overview and a contribution to the optical measurement of linear displacement

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 ha...

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Bibliographic Details
Published in:IEEE sensors journal 2001-12, Vol.1 (4), p.322-331
Main Authors: Girao, P.M.B.S., Postolache, O.A., Faria, J.A.B., Pereira, J.M.C.D.
Format: Article
Language:English
Subjects:
Angular position
Displacement
Displacement measurement
Error correction
Error detection
Intensity modulation
Laser beams
Light beams
Optical interferometry
Optical measurement
Optical modulation
Optical sensors
Position measurement
Redundancy
Sensor systems
Sensors
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Summary: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.
ISSN:1530-437X
1558-1748
DOI:10.1109/7361.983472