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22 December 2000 Automatic sorting installation based on two CCD cameras for measuring gauge diameter and ellipticity of pulp extractors
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Proceedings Volume 4309, Videometrics and Optical Methods for 3D Shape Measurement; (2000) https://doi.org/10.1117/12.410887
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States
Abstract
The concrete problem, which decision is presented in given paper, consists in measuring of pulp extractor diameter apart 1 mm from its operating end and their automatic sorting. The range of measuring sizes is 180-260 micrometers , necessary measurement accuracy is 1 micrometers . The sorting is carried out on 8 subranges in 10 micrometers . The ellipticity of a pulp extractor is analyzed additionally and used as a qualitative index. The comparative analysis of different tools on metrology performances and cost problems of their embodying has allowed to select television system, as the class on the basis of which is necessary to build a required system. Problems decided at built-up of a system are: use of short focus lenses with major augmentation for shaping pulse duration solved for measuring to within 1 micrometers error; the account of lenses aberrations influence on a measuring error; use of cameras with a size of pixels in 0.7-1 micrometers ; definition of the line number, which corresponds to a gauge diameter of a pulp extractor; holding of a statistical average and extrapolation of data of measuring; the analysis of system variants with the purpose of its simplification and cost decreasing.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dmitry L. Ovchinnikov, Rishad A. Akhtiamov, Nikolai V. Dorogov, Oleg G. Morozov, Ilnur I. Nureev, and Alfred Yu Yusupov "Automatic sorting installation based on two CCD cameras for measuring gauge diameter and ellipticity of pulp extractors", Proc. SPIE 4309, Videometrics and Optical Methods for 3D Shape Measurement, (22 December 2000); https://doi.org/10.1117/12.410887
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