• Electronics Optics & Control
  • Vol. 29, Issue 2, 72 (2022)
XU Yang, CHEN Lei, XU Xiaobin, WANG Xiong, MA Xiaoyu, and HE Chao
Author Affiliations
  • [in Chinese]
  • show less
    DOI: 10.3969/j.issn.1671-637x.2022.02.016 Cite this Article
    XU Yang, CHEN Lei, XU Xiaobin, WANG Xiong, MA Xiaoyu, HE Chao. Binocular Vision Measurement Technology in Hypersonic Wind Tunnel[J]. Electronics Optics & Control, 2022, 29(2): 72 Copy Citation Text show less

    Abstract

    Due to excessive oncoming flow, high total pressure and high total temperature in the test section of a hypersonic wind tunnel, it is difficult to design the layout of optical measurement equipment.To solve this problem, a layout scheme of the binocular vision measurement system as well as the attitude measurement method is designed, which is suitable for hypersonic wind tunnels.Through the high-speed cameras and LED light sources arranged inside and outside the test section, the 6-DOF data of the test model is collected.In order to verify the rationality of the layout, static tests are conducted, and the mark-point technology in the binocular vision system is adopted to calculate the displacement and attitude of the model.In the experiment, a comparison with the actual feeding mechanism on the change of the model’s attitude is conducted, which verifies the feasibility of the layout scheme of the binocular vision system.Within a distance of 1.2 m and a space of 0.5 m3, the test error of rotation attitude is lower than 0.08°, and the test error of displacement is lower than 0.05 mm.
    XU Yang, CHEN Lei, XU Xiaobin, WANG Xiong, MA Xiaoyu, HE Chao. Binocular Vision Measurement Technology in Hypersonic Wind Tunnel[J]. Electronics Optics & Control, 2022, 29(2): 72
    Download Citation