Method for Contactless Determination of the Height of A Fuel Assembly by Means of A 3-D Reconstruction of A Collinear Stereopair Images

  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract

    A method for determining the head height of fuel assemblies in the reactor core of a nuclear power unit using a 3-D reconstruction of a stereopair of collinear images is considered. The method is based on the principle of statistical evaluation of the height of a set of points for a 3-D reconstruction of the contour of the head of the fuel assembly. To obtain a stereopair of images, it is suggested to use a collinear digital stereo-vision system. A model experiment was carried out. The results are compared with the known method for determining the height of the heads of fuel assemblies, based on an estimate of the height of the centers of gravity of the contours of fuel assembly heads. The proposed method shows a higher accuracy in solving the problem of determining the heights of fuel assembly heads in comparison with the known method.



  • Keywords

    Digital stereo vision system, 3-D reconstruction, measurement accuracy.

  • References

      [1] Kalyaev I. A., Rumyantsev K. E., Makeev V. V., Balabaev S. L., Korobkin V. V., Korovin J. S., Kuharenko A. P., Radetzky V. G., “Non-contact method for determining of the height of the heads nuclear reactor fuel assemblies on the basis of three-dimensional reconstruction images”, Izvestiya SFedU. Engineering sciences, Vol.3, No.80, (2008), pp.126–131.

      [2] Makeev V. V., Povarov V. P., Korobkin V. V., Lebedev O. V. “The system of noncontact determination of the altitude difference in the heads of fuel assemblies in the reactor core”, Izvestiya Vuzov. North-Caucasian region. Technical science, Vol.16, (2006), pp.37–41.

      [3] Balabaev S. L., Lozovskaya E. G., “The choice of camera position to minimize the measurement error of the fuel assembly head”, Izvestiya SFedU. Engineering sciences, Vol.8, No.169, (2015), pp.58–76.

      [4] Konstantin E. Rumyantsev, Sergey L. Balabaev, Irina Yu. Balabaeva., “Fuel Assembly Height Measurements at the Nuclear Power Plant Unit Active Zone”, Communications in Computer and Information Science, Vol.712, (2017), pp.156 – 163.

      [5] Rumyantsev K. E., Kravtsov S. V., “Analysis of measuring space stereoscopic digital television system. Point and interval estimation of coordinates of points of three-dimensional scenes”, Electrical and information complexes and systems, Vol. 3, (2011), pp.38–48.

      [6] Rumyantsev K. E., Kravtsov S. V., “Analysis of measurement error of depth points of a three-dimensional scene stereoscopic digital television system”, Radiotechnics, Vol.9 (2011), pp.83–93.

      [7] Kravtsov S. V., Rumyantsev K. E., “The Analysis of Measurement Capabilities Onboard Collinear Digital Stereo Vision Systems”, 2016 IEEE International Conference on Systems, Man, and Cybernetics, SMC 2016 - Conference Proceedings, pp.001597–001602. DOI: 10.1109/SMC.2016.7844467




Article ID: 16323
DOI: 10.14419/ijet.v7i3.13.16323

Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.