Share Email Print
cover

Proceedings Paper

Electrooptic converter to control linear displacements of the large structures of the buildings and facilities
Author(s): Aleksandr S. Vasilev; Igor A. Konyakhin; Alexander N. Timofeev; Oleg U. Lashmanov; Fedor V. Molev
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The paper analyzes the construction matters and metrological parameters of the electrooptic converter to control linear displacements of the large structures of the buildings and facilities. The converter includes the base module, the processing module and a set of the reference marks. The base module is the main unit of the system, it includes the receiving optical system and the CMOS photodetector array that realizes the instrument coordinate system that controls the mark coordinates in the space. The methods of the frame-to-frame difference, adaptive threshold filtration, binarization and objects search by the tied areas to detect the marks against accidental contrast background is the basis of the algorithm. The entire algorithm is performed during one image reading stage and is based on the FPGA. The developed and manufactured converter experimental model was tested in laboratory conditions at the metrological bench at the distance between the base module and the mark 50±0.2 m. The static characteristic was read during the experiment of the reference mark displacement at the pitch of 5 mm in the horizontal and vertical directions for the displacement range 400 mm. The converter experimental model error not exceeding ±0.5 mm was obtained in the result of the experiment.

Paper Details

Date Published: 22 June 2015
PDF: 7 pages
Proc. SPIE 9525, Optical Measurement Systems for Industrial Inspection IX, 95252W (22 June 2015); doi: 10.1117/12.2184528
Show Author Affiliations
Aleksandr S. Vasilev, ITMO Univ. (Russian Federation)
Igor A. Konyakhin, ITMO Univ. (Russian Federation)
Alexander N. Timofeev, ITMO Univ. (Russian Federation)
Oleg U. Lashmanov, ITMO Univ. (Russian Federation)
Fedor V. Molev, Avangard Ltd. (Russian Federation)


Published in SPIE Proceedings Vol. 9525:
Optical Measurement Systems for Industrial Inspection IX
Peter Lehmann; Wolfgang Osten; Armando Albertazzi Gonçalves, Editor(s)

© SPIE. Terms of Use
Back to Top