Digital Twin-Based Three-Dimensional Visual and Global Monitoring of Assembly Shop-Floor

Aiming at the requirements of rapid response and production efficiency improvement in the assembly shop-floor, a three-dimensional (3D) visual and global monitoring method for the assembly shop-floor based on the digital twin is proposed. The paper analyzes the monitoring objectives, objects, and methods of assembly shop-floor, and constructs a global monitoring framework of digital twin-based assembly shop-floor. Then, three key technologies of realizing global monitoring shop-floor are described: current-time data perception and collection, current-time information-driven digital twin generation, and state monitoring and optimization based on digital twin. Finally, a global monitoring prototype system is designed and developed to verify the effectiveness of the proposed method.