Method for measuring radius of curvature and thickness of coiling machine based on depth camera

Abstract

The invention discloses a method for measuring the radius of curvature of a coiling machine based on depth camera, comprising of: obtaining a front image of the coiling machine not performing coilingby a first depth camera; obtaining a front image of the coiling machine performing coiling by the first depth camera; performing difference between the two images to obtain the front image of the current coil; through the coordinate system conversion, obtaining the representation of the front image of the current coil in the world coordinate system; filtering out the points on the x=x0 plane in the world coordinate system; selecting any three points to obtain the center coordinates of the coil; and obtaining the radius of curvature of the coil according to the coordinates of the center of thecircle and the coordinates of any selected points. Therefore, it is no longer necessary to manually measure the radius of curvature of the coil, and the automatic intelligent detection of the radius of curvature of the coil is achieved, and the accuracy and detection efficiency of detecting the radius of curvature of the coil are improved. The invention also discloses a method for measuring the thickness of a coiling machine based on depth camera.

Description

technical field [0001] The invention relates to the technical field of plate bending radius and thickness detection, in particular to a method for measuring the radius of curvature of a plate bending machine based on a depth camera and a method for measuring the plate thickness of a plate bending machine based on a depth camera. Background technique [0002] The traditional plate rolling machine measures the radius of curvature and thickness of the rolled steel plate manually, which not only cannot guarantee the accuracy, but also slows down the efficiency and is more likely to cause personal injury. Among them, the device with the application number 201710723436.7 designs a new mechanical device to measure the radius of curvature of the steel plate, avoiding the inconvenience of traditional measurement with a ruler. However, this method still requires manual measurement, and each roll requires a person to take the device to measure it, which is not efficient and can easily ...

AI Technical Summary

Problems solved by technology

This method uses the image method, which can take a full view of the entire steel plate at one time, but uses the color image method, which is greatly affected by ambient light. At the same time, when the machine is used for a long time, various stains on the surface of the machine will It also affects the measurement accuracy

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