1. What is a digital twin?
Digital Twin (Digital Twin) is an important technology that depicts, simulates, optimizes, and visualizes the physical world in the information world. It provides digital transformation, intelligence (such as smart cities, smart manufacturing), and services. It provides an effective way to global industrial and social development trends such as globalization, green sustainability and so on.
2. What is the digital twin recognized by the industry?
In the process of theoretical research and application practice of digital twins, people in different fields, different needs, and different levels have different understandings and understandings of digital twins.
Sight Machine Company believes that digital twins are dynamic, virtual representations of physical assets, products, processes or systems, mainly showing their current working status.
Glaessgen and others believe that in addition to displaying the current status of the physical entity, digital twins can also further predict the future status of the physical entity such as its health status, remaining lifespan, and mission success rate.
Tobe believes that the digital twin model is a three-dimensional simulation model.
Wong believes that the digital twin model does not need to be a three-dimensional simulation model, but can also be a two-dimensional model.
Leiva believes that digital twins include model data and operating data of physical entities, while Rosen et al. believe that digital twins can include all data involved in the entire life cycle of physical entities.
GAVS believes that digital twins should include artificial intelligence data, software analysis data, machine learning data, etc.
3. Standard system for digital twins
The team proposed a five-dimensional digital twin model, which provides a reference for the implementation of digital twin technology from the five dimensions of physical entity, virtual entity, connection, twin data, and service, and has received widespread attention from academia and industry.
3.1 Digital twin standard system framework
3.2 Digital twin standard architecture
3.3 Common standards related to the basics of digital twins
3.4 Key technical standards for digital twins
3.5 Physical entity standards
3.6 Virtual entity related standards
3.7 Twin Data Standard
3.8 Connection and integration standards
3.9 Related service standards
Information: Tao Fei, Ma Xin, Hu Tianliang, et al. Digital twin standard system [J]. Computer Integrated Manufacturing Systems, 2019, 25(10): 2405-2418. DOI: 10.13196/j.cims.2019.10.001.