Contour point cloud coordinate acquisition method

Abstract

The invention discloses a contour point cloud coordinate acquisition method. According to the method, a contour point acquisition device is fixed on a rope-driven platform, a marking point is pasted on the surface of the platform, the marking point is tracked by a visual tracking device, and pose information of the platform corresponding to the marking point can be recorded in real time. Workpiececontour point cloud coordinate information acquired by the contour point acquisition device can be converted into the coordinate information of the visual tracking device through the pose relationship of the tracking device. A rope driving device drives the contour point acquisition device to acquire all contours of a workpiece according to a set path, and feeds back all contour coordinate valuesto the visual tracking device, so that all point cloud acquisition of the contours of the workpiece is completed. Through the method, the size of the driving device can be reduced, the method is suitable for point cloud collection of large and complex components, the detection response speed is increased, the flexibility of a point cloud collection system is improved, and the cost is reduced.

Description

technical field [0001] The invention relates to a point cloud collection method, in particular to a method for collecting workpiece surface contour coordinate data, which belongs to the field of detection engineering. Background technique [0002] Due to its small size, high frequency, high precision, and strong environmental adaptability, laser displacement sensors are widely used in various industries as high-precision measurement. The rope drive has the characteristics of large working space, fast movement speed, strong bearing capacity and good flexibility. For the contour data acquisition of large-scale and complex special-shaped component detection, although the hand-held detection equipment is flexible, it is inefficient and labor-intensive; using other customized detection equipment such as gantry is costly and the cycle is long. Patent No. 201610865363.0 discloses a line laser scanning measurement system and method combining industrial robots and linear guide rails...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the problems of low detection efficiency and high equipment development cost of large-size components, especially complex and special-shaped components, and provide a method for collecting contour point cloud coordinates, which improves the efficiency of contour point cloud coordinate data collection and reduces system development. cost

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