3D scanning and reconstruction of large objects based on PLC
An innovative and practical 3D reconstruction system was proposed to obtain 3D data of large objects, and the system composition, theory and method were researched.The system is composed by an infrared-based 3D scanner and two guide rails and a high-accuracy motion control system based on Programmable Logic Controller (PLC) module.First, the 3D scanner installed in the guide rail was controlled by the motion control system to move at a constant speed;then,the 3D scanner was used to project infrared ray towards the object and reconstruct the infrared segment projected;finally, based on constant motion speed of the 3D scanner, the system was used to merge the local reconstruction data, thus obtaining complete 3D reconstruction data of the large object.Experiment result indicates that compared with the method based on laser ranging, measuring speed achieved by using this proposed method is improved by approximately 7 times, with a measurement accuracy improved by about 2.5 times.The proposed method can basically satisfy the requirements, such as high reliability, high accuracy and high speed, for auto 3D reconstruction of large objects in industrial production.
国家科技期刊平台
NSTL
万方数据
维普
