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A Novel Self-calibrating Laser Scanning Projection Method

A laser scanning and self-calibration technology, applied in the direction of optical devices, instruments, complex mathematical operations, etc., can solve the problems of lower assembly efficiency, complicated operation, and long operation time, and achieve the effect of fast and efficient laser scanning projection

Active Publication Date: 2021-04-30
中山荔威光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The calibration operation is time-consuming, complicated, and reduces assembly efficiency and product quality
[0005] The more serious problem is that when the projected target object has a change in the pose relationship, human intervention is required to use the remote control device to carry out the above-mentioned guidance and calibration process on the cooperative target, and re-establish the coordinates between the laser scanning projection instrument and the projected target object conversion relationship

Method used

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  • A Novel Self-calibrating Laser Scanning Projection Method
  • A Novel Self-calibrating Laser Scanning Projection Method
  • A Novel Self-calibrating Laser Scanning Projection Method

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Embodiment 1

[0067] Such as figure 1 , in an embodiment, a novel self-calibrating laser scanning projection system, specifically comprising: an optical camera 1, a two-axis turntable 3, an ambient light source 4, a laser scanning projector 5, a No. 1 cooperation target 6, a projected target object 7, No. 2 cooperation target 8, computer 9, lens 2 are installed on the optical camera 1.

[0068] In this embodiment, the projected target object 7 refers to the object that finally accepts the projected graphics. For example, if a certain component on the chassis of the car is to be installed on the chassis, the chassis is the projected target object. A laser scanning projector is required The position and shape of the component is projected on the chassis.

[0069] In this embodiment, the coordinate system of the optical camera 1 is C-XYZ, the lens 2 is installed on it, the optical camera 1 is connected with the biaxial turntable 3, and the biaxial turntable 3 drives the optical camera 1 to ro...

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Abstract

The invention discloses a novel self-calibration laser scanning projection method, comprising the following steps: sequentially calibrate the coordinate system of the first image acquisition device and the coordinate system of the projected object, and calculate the coordinate system of the first image acquisition device and the coordinate system of the projected object coordinate transformation relationship; rotate the image acquisition device, calibrate the coordinate system of the second image acquisition device and the coordinate system of the laser scanning projector; calculate the coordinate transformation relationship between the coordinate system of the second image acquisition device and the coordinate system of the laser scanning projector; through the first image Coordinate transformation relationship between the coordinate system of the acquisition device and the coordinate system of the second image acquisition device, and solve the coordinate transformation relationship between the coordinate system of the laser scanning projector and the coordinate system of the projected object; Search and scan independently, and finally the laser scanning projection instrument reads the CAD mathematical model of the part to be projected and projects it.

Description

technical field [0001] The invention belongs to the field of advanced photoelectric testing instruments, and in particular relates to a novel self-calibrating laser scanning projection method, which is specifically applied to intelligent auxiliary assembly positioning in the field of advanced manufacturing and assembly. Background technique [0002] The laser scanning projector is mainly used in the field of advanced intelligent manufacturing assembly. The instrument can drive the two-axis scanning galvanometer for high-precision deflection according to the three-dimensional CAD digital model of the parts to be processed or assembled, so that the light emitted by the laser is quickly deflected, thereby At the target projection position in the three-dimensional space, the contour line frame of the part outline formed by the rapid circular scanning of the laser light is displayed. The laser outline frame is bright, clearly visible, and can accurately display the three-dimensio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/25G06F17/16
CPCG01B11/2522G06F17/16
Inventor 侯茂盛刘智超陈雨情李丽娟林雪竹郭丽丽刘涛
Owner 中山荔威光电科技有限公司
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