Laser contour sensor calibration system and method based on cross point

Abstract

The invention provides a laser contour sensor calibration system and method based on a cross point. The system comprises a calibration object, a two-dimensional workbench, a laser contour sensor, a positioning mechanism and a computer; the calibration object is fixed on the two-dimensional workbench and can move along with the two-dimensional workbench; the laser contour sensor is located on the positioning mechanism and is fixed; the calibration object has two intersecting planes; an intersection line of the two intersecting planes directly faces the laser contour sensor; and the computer isconnected with the two-dimensional workbench and the laser contour sensor. The calibration object has the two intersecting planes; an intersection point of a straight line formed on the two planes byline laser serves as a spatial point; a displacement method is adopted to calibrate the laser contour sensor; and the system has the outstanding advantages of being simple in calibration object, easyto manufacture, high in spatial point coordinate calculation accuracy, free of deformation influence and the like, and 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

Images