Researchon Assembling And Human Factor Evaluation Based On Virtual Reality Technology

The virtual assembly can find out the procedural problems that may exist in the future production assembly during the initial stage of development.During the assembly process,various data collection is performed on the assembly workers,and the assembly and verification of the parts can be evaluated and verified through computer analysis.The various product problems that occurred during the process were passed back to the R&D department to make necessary improvements to the product.Most of the human factors are artificially detected,which is easy to cause people to deliberately delay the operation time and data distortion.Therefore,it is of great theoretical and practical value to explore the assembly and human factors evaluation based on virtual reality technology.Based on the research progress of virtual assembly,behavior recognition and human factors ergonomics evaluation at home and abroad,Unity3 D is used as the platform for environmental development,and KinectV2 and Leap Motion are selected as the interactive devices of virtual assembly.According to the assembly requirements,the research framework of this paper is based on assembly requirements.Analyze,complete the preliminary design of the secondary reducer assembly scene,and finally build the data transmission environment of KinectV2,Leap Motion and Unity3 D,use the corresponding interface to complete the data stream exchange,and verify the interaction reliability through experiments.Based on Unity3D’s collision detection,KinectV2’s bones and Leap Motion’s hand bones,basic part capture,movement,placement and assembly functions were developed to develop a basic UI interaction interface,completing the virtual assembly interaction design.Using the human bone coordinate points captured by the sensor,a DAR recognition method is designed,which uses the constraints of distance,angle and range to identify the upper limb movements,lower limb movements,other movements and rapid upper limb evaluation methods of the model values.The people were tested in the virtual assembly environment for the feasibility of the evaluation method.The results showed that the scene met the expected requirements.The findings provide an idea for future extended research in this area.