A laser profile sensor calibration system and method based on intersection points

Abstract

The present invention provides a laser profile sensor calibration system and method based on intersections, including: a calibration object, a two-dimensional worktable, a laser profile sensor, a positioning mechanism and a computer, and the calibration object is fixed on the two-dimensional workbench And can move with the two-dimensional workbench, the laser profile sensor is located on the positioning mechanism and fixed, the calibration object has two intersecting planes, and the intersection line of the two intersecting planes is facing the laser A profile sensor; the computer is connected to the two-dimensional workbench and the laser profile sensor. The calibration object of the present invention has two intersecting planes, and the intersection point of the straight line formed by the line laser on the two planes is used as a spatial point, and the displacement method is used to calibrate the laser profile sensor, which has the advantages of simple calibration object, easy manufacture, and calculation of spatial point coordinates With outstanding advantages such as high precision and no influence of deformation, it is suitable for any type of contour calibration.

Description

technical field [0001] The present invention relates to a calibration system and method in the field of measurement technology, in particular to a laser profile sensor calibration system and method based on intersection points. Background technique [0002] Contour measurement not only plays an important role in the industrial manufacturing process, but is also widely used in optical precision engineering, aerospace, robotics, chip manufacturing, automobile manufacturing, underwater detection and other fields, and has become a growing number of industrial applications. Function realization, equipment data acquisition, parts data acquisition, precision analysis, quality inspection and other essential links. [0003] With the increasing precision of manufacturing, non-contact contour measurement has gradually become the mainstream trend. Among them, the laser profile sensor based on the line structured light method has gradually become a hot spot. This method has outstanding...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems of low precision, poor efficiency, and difficulty in making physical calibration objects in the existing laser profile sensor calibration methods, the present invention proposes a laser profile sensor calibration system and method based on intersections, by setting two intersecting planes The calibration object uses the intersection of the straight lines formed by the line laser on two planes as the calibration space point, and uses the displacement method to calibrate the laser profile sensor

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