| Citation: | SHANG K，ZHANG Y L，ZHANG F Z. Architecture of smart parking lot based on digital twin technology[J]. Journal of Beijing University of Aeronautics and Astronautics，2023，49（8）：2029-2038 （in Chinese） doi: 10.13700/j.bh.1001-5965.2021.0624
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In the research on the construction of large and medium-sized parking lots in cities, the current focus is mainly on hardware upgrades and simple human-computer interactions. However, neither the low use of big data nor the divergence between digital simulation and actual things has been resolved. Based on digital twin technology, a general idea of digital simulation and physical mapping for factors of the parking lot was advanced to established a 4-layer theoretical architecture for a digital twin parking lot. It includes the all elements physical entity of the parking lot, physical integration of the parking lot’s information, digital twin model of the parking lot, and intelligent service platform of the parking lot’s application. Real-time mapping between physical objects in physical space and virtual objects in virtual space is realized through real-time information transmission; real-time decision-making and simulation predictions in the physical domain is realized through continuous simulation iteration in the digital twin domain, providing services for users and administrators, such as parking allocation, parking guidance, and risk assessment. According to this framework, 4 key points were analyzed, including the precision modeling of all elements in the parking lot, short-time parking prediction, parking space allocation and alternate parking, and parking guidance. The feasibility of constructing a digital twin parking lot is preliminarily verified by the three-dimensional spatial structure modeling of an underground parking lot, and simulation and visualization of the parking guidance path planning using tools such as ThingJS and MATLAB.
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