Zhengzhou started digital city about 6,7 years ago, however, its data is still and 2D. Comparing with digital city, smart city needs to be measurable, analyzable, visible, an existed city driven by technologies like big data, etc.
Zhengzhou, capital city of Henan province, started construction of digital city at very early time. With the acceleration of construction smart city, smart Zhengzhou merged. On the internet, Zhengzhou as the trial city, has accomplished cable to village, download speed has reached No. 4 in China. In the recent years, with the advancement of smart city, Zhengzhou database on population, legal person, geographic database, the ‘internet + governance’ is in progress.
Digital city has some common problems, like data stillness, unreal information. Also there are some alerts in the future city planning, with development of technologies of cloud computation, big data, super calculation, there will be bottleneck data dynamic management, information sharing and measuring, visibility, making digital city has huge bottleneck.
The transformation from digital city to smart city needs the construction 3D city model.
This will bring evident advantages. 3D model is a general concept, through which bus lane can have 20 centimeter precision. 3D model recognition also realizes smart transportation, which requires poles, well lid to be real and have the unique location coordinate spatially and temporally.
In November, 2016, the program has been accepted. The experts believe that the platform realized interconnection application between city 3D model and 4 major basic databases. The platform has reasonable design, great performance, user-friendly interface, easy operation, stability, reliability and extensibility.
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