The Research On System Construction And Key Technologies Of Bridge Crane Simulator

With 3D graphics, multi-sensor interactive technology and high-resolution display, Virtual Reality(VR) enables users to immerse themselves in the virtual world, and to perceive and operate the various object to acquire an immersive experience and knowledge through hardware devices. Compared with any previous form of human-computer interaction, VR is hoped to fulfill the realization of "harmony and personification" of man-machine interface as a new form. At present, the application of VR simulator training device has become one important manner in the training of aircraft, automobiles, and ships etc.The continuous development of industrial production promotes the utility of bridge crane, so does the number of bridge crane operator, which pushes the issue of efficient training on the crest of a wave. In view of VR has been successfully used in various fields as training devices, this thesis, combining with VR, aims at efficient training and reducing costs, and researches ways to construct high-performance systems and some key points on training operators in virtual world.This thesis designs the software and hardware constructing the system, and depicts the various subsystem modules and human-computer interaction methods between hardware and software according to the bridge crane training requirements and characteristics. It also researches the realization in computer based on bridge crane training guidelines and training modes, and fulfills training through designing performance appraisal module to ultimately evaluate the performance of trainees. The system is characteristic of good immersion and real-time performance by studying physical processes in visual system.The thesis shows great theoretical meaning and practical value. Innovations are as follows:(1) Fulfilled semaphore training by sign decoding adopting data mapping between action characters and the data acquisition card; designed trainning mode of driving obstacle flow chart by defining "sensitive area" combing the layout of the scene and model movemnt features; (2) Combined the theory of FDH bounding box and OSG collision detection, a bounding box collision detection algorithm is designed based on the analysis of the model movement, which enhanced the system's performance of real-time and reality.(3)Analyzed gantry collision in LS-DYNA, and structure changes of stress and displacement in the accident, which enables users to understand the structural mechanism to enhance vigilance to prevent the accident.