Laser-based two-dimensional position measurement of a cylindrical object for precision alignment

Ravi Dhawan; Biswaranjan Dikshit; Nitin Kawade

doi:10.1117/1.OE.57.8.084102

15 August 2018 Laser-based two-dimensional position measurement of a cylindrical object for precision alignment

Ravi Dhawan, Biswaranjan Dikshit, Nitin Kawade

Author Affiliations +

Optical Engineering, Vol. 57, Issue 8, 084102 (August 2018). https://doi.org/10.1117/1.OE.57.8.084102

Abstract

Changes in the position and alignment of cylindrical objects (shafts, pipes, etc.) in heavy machines from a particular coordinate system or from its aligning counterpart need to be measured accurately to prolong the life of machinery and to avoid large-scale accidents. A method for online measurement of the position of cylindrical objects in a two-dimensional (2-D) plane using linear optical fiber array-based laser triangulation sensors is proposed. A mathematical model was first developed to deduce the 2-D change in position of the target axis using two perpendicularly placed sensors and considering the effect of the curvature of the target surface on measurements. Then, using the formula derived and our recorded experimental data, we have demonstrated the measurement of the 2-D position of a cylindrical object with two developed sensors placed remotely at a 100-mm standoff distance.

Citation Download Citation

Ravi Dhawan, Biswaranjan Dikshit, and Nitin Kawade "Laser-based two-dimensional position measurement of a cylindrical object for precision alignment," Optical Engineering 57(8), 084102 (15 August 2018). https://doi.org/10.1117/1.OE.57.8.084102

Received: 14 June 2018; Accepted: 25 July 2018; Published: 15 August 2018

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