A digital twin system for a production line

Abstract

The invention discloses a digital twin system of a production line. The system creates a digital twin production line through the instantiation of an industrial information model module, and writes communication and motion control programs based on the Unity3D physics engine to construct a human-computer interaction module of the twin system of the production line; the data acquisition module collects in real time , Analyze the actual state data of the production line, and write a communication program based on the MQTT protocol to realize the data synchronization between the twin system and the physical production line. At the same time, the state data of the production line is managed and forwarded to the production line performance evaluation module; the production line performance evaluation module analyzes the production line operation data, Calculate the performance index of the production line in real time; the production line control service module realizes the control of the production line equipment in the workshop by sending numerical control instructions to the equipment in the system. The invention simplifies the simulation process of the manufacturing execution process of the production line, improves the design efficiency of the simulation system of the production line, and improves the integrated management level of workshop production.

Description

technical field [0001] The invention relates to the technical field of intelligent manufacturing, in particular to a digital twin system of a production line. Background technique [0002] Digital twin is to digitally create a virtual model of a physical entity, use data to simulate the behavior of the physical entity in the real environment, and add or expand new capabilities for the physical entity through means such as virtual-real interactive feedback, data fusion analysis, and decision-making iterative optimization. For the field of manufacturing, digital twin can also be defined as "a digital description of manufacturing elements such as people, products, equipment, and processes, and is updated synchronously with changes in object display status, working conditions, product geometry, and resource status." Dynamic model", this digital description provides the dynamic characteristics of the operation of elements and physical world "things", and exists in the whole life ...

AI Technical Summary

Problems solved by technology

[0003] The simulation of the manufacturing execution process of the workshop production line is a complicated process. At present, some 3D simulation software can be used to perform virtual simulation of the layout of the production line, the manufacturing process path, and the logistics plan. However, this virtual simulation is based on the theory in the design process. Data, lack of effective use of actual data, the obtained simulation results also have certain deviations from the actual

For the monitoring of the production process of the production line, at present, through the installation of surveillance cameras, video recording and storage of the production screen of the production line can realize real-time monitoring of the production process of the production line. The technical difficulty of installation and deployment is relatively low, but the cost is high and the storage capacity Large volume, high management difficulty, high maintenance cost

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