Defect recognition technology for UAV patrol inspection image of vibration damper
To solve the problem of poor accuracy and low efficiency of vibration damper defect detection due to too many external influencing factors of transmission lines,an intelligent recognition technology based on image representation and pixel coordinates for damper defects was proposed.The details and contour of damper were described by nonlinear mapping,and the change of damping force,stiffness,mass and displacement caused by stress deformation of vibration damper was estimated.The transformation matrix was used to establish the identification coordinate system,and to calculate the rotation angle and dynamic position of key points on each axis of vibration damper.The calculated node inconsistent with the parameter expression of the identified node was confirmed as the defect part.The experimental results show that the as-proposed technology can also achieve accurate defect recognition in complex background sceneries,and the processing effect of noise and distortion is also better,indicating its good robustness and applicability.
万方数据
维普
