5 Ways to Use GIS in Smart City Projects

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Nursinem Handan ŞAHAN
Graduated from Yıldız Technical University, Department of Geomatics Engineering in 2018 as an honour student. During her undergraduate education, she studied at the Warsaw University of Technology with the Erasmus + program. Currently continuing her education at Istanbul Technical University, Department of Geographical Information Technologies.

The successful implementation of a smart city project requires the development of a digital system that can manage and visualise the geospatial data in a user-friendly environment. The geographic information system (GIS) offers advanced and user-friendly capabilities for smart city projects.

Check out more: Biophilic Design Within Smart Cities

The implementation of smart city projects is based on a number of steps including the construction of the urban digital model, data collection using the sensing layer, then data analysis, interactive data visualization and system control. GIS plays a role in these steps, as described below.

Construction Of The Urban Digital Model

The first step in the implementation of smart city projects concerns the construction of the urban digital model that describes the components of the urban built and natural environments. For each urban component, the digital model provides the geolocalisation and characteristics (attributes). GIS is generally used for the construction of the digital model of urban ‘horizontal components’ such as urban networks, transport facilities and natural environment while building information modelling (BIM) is used for the description of ‘vertical components’ such as buildings. The combination of GIS and BIM provides a powerful tool for the construction of the urban digital model with georeferenced data and the visualization of this data in a user-friendly environment.

Sensing Layer

The second step in smart city projects concerns the construction of the sensing layer that transfers urban operating data to the smart city information system. This layer includes sensors used for monitoring urban networks and infrastructures. Data could also be enhanced by images, videos and audio files resulting in the construction of urban big data. GIS offers the possibility to visualize the monitoring system as well as the sensors’ characteristics and status. It also provides the possibility to visualize real-time and historical data on GIS maps.

Data Analysis

The third step in implementing a smart city project concerns the development of the analytic environment, which converts real-time and historical data into operational data that improve the security, efficiency and quality of urban systems. The analytic environment includes engineering, management and safety software for urban systems as well as advanced digital tools such as artificial intelligence (AI). In smart city projects, GIS provides tools for (i) geospatial data analysis (distance and directional analysis, geometrical processing, grid models), (ii) spatiotemporal analysis, (iii) spatial statistics (spatial autocorrelation and regression), (iv) surface analysis (surface form and flow analysis, gridding and interpolation methods) and, (v) location analysis (shortest path calculation, facility location).

Interactive Data Visualization

Interactive data visualization allows users to interact with the smart city’s components and the stakeholders in a user-friendly environment. Web applications are used to create this interactive environment. The use of HTML popups enables users to access web-based content such as graphics referenced by URLs. The interactive GIS graphic environment allows the visualization of urban components and sensors maps. Users and managers can utilize these maps to access static and dynamic data concerning urban systems as well as to update the data.

Control Layer

Data analysis of historical and real-time data results in commands for the optimal and safe management of urban systems. These commands are transmitted to the control layer, which includes different electronic devices such as smart valves, pumps, motors, switches, breakers and locks. The GIS system allows real-time visualization of these devices as well as their status. It could also visualise faults in device commands.

Source: Use of GIS in Smart City Projects

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