High-speed laser contourgraph

Abstract

The high-speed laser contourgraph comprises a laser transmitter, a lens unit, a scanner, an angle feedback device, an algorithm control unit, an imaging lens, a photoelectric detector, a master controller, a timing module and a laser pulse control unit, laser is projected to the lens unit and then is projected to the swinging scanner to scan the contour of an object, and the scanning precision is improved. The angle feedback device feeds back the swing angle of the scanner to the algorithm control unit, and the algorithm control unit controls the swing angle of the scanner and controls the driving current of the laser transmitter through the laser pulse control unit. The laser is projected to an object through the scanner, is projected to the photoelectric detector through the imaging lens after being reflected, is subjected to photoelectric conversion and is transmitted to the master controller; and the timing module receives the initial time of the laser transmitter and the receiving time of the single-point detector and transmits a time interval to the master control to complete phase solving and calculation functions. The invention has the advantages of compact structure, high responsivity, unlimited wavelength, low assembly difficulty and low cost.

Description

technical field [0001] The invention belongs to the technical field of non-contact three-dimensional measurement and the technical field of machine vision, and in particular relates to a high-speed laser profiler. Background technique [0002] In the field of three-dimensional measurement, its measurement methods are divided into contact measurement and non-contact measurement. Non-contact measurement has the advantages of no damage to the surface of the object and no measurement deviation that varies from person to person. It has attracted much attention in the field of 3D measurement. Non-contact measurement methods can be divided into optical methods and non-optical methods. The commonly used optical methods are structured light method and laser method. The laser method is to irradiate a beam of laser light from the light source on the object to be measured, and image it on the detector after reflection. When the surface of the object changes, the image formed by the det...

AI Technical Summary

Problems solved by technology

The high-speed array detector used in this series of cameras is HSE 3 -CMOS, which can measure the surface of the target object stably and at ultra-high speed; however, its complex structure, relatively expensive price, large array area, and high calculation cost make it not fully popular in many application fields

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