Abstract
The goal of the implemented system is to provide useful tools to monitor in real time the positions of the vehicles that share the Green Move system. Data can be accessed in two different ways: by the Green Move WebGIS, for browsers; by the geoweb service that delivers the data accordingly to the Web Map Service and Web Feature Service standards that are defined by Open Geospatial Consortium (OGC), for OGC Web Services clients. Static information, like vehicles identifiers or registrations numbers, is published. Moreover, real-time data are published and updated every 5 s: vehicles positions or other data from onboard Global Navigation Satellite System as well as useful data from others sensors, like speed and battery charge level and static information, like vehicle identifier, registration number. Furthermore, delivered vehicles positions are processed to correctly georeference them in correspondence of roads. Free and open-source software has been used to implement the service: MapServer, OpenLayers, and PostGIS/PostgreSQL provide the GeoDB, and OpenStreetMap service is used for road maps.
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Notes
- 1.
The map service of Regione Lombardia public administration: http://www.geoportale.regione.lombardia.it/.
- 2.
National map service: http://www.pcn.minambiente.it.
- 3.
INSPIRE (Infrastructure for Spatial Information in Europe—Directive 2007/2/EC) is an initiative launched by the European Commission, and it aims to ensure that the spatial data infrastructures of the Member States are compatible and usable in a Community and transboundary context.
- 4.
GML, or rather Geography Markup Language, is an XML encoding to represent geographic information; it is defined in ISO 19136:2007 standard.
- 5.
Environmental Systems Research Institute.
- 6.
EPSG Geodetic Parameter Dataset is a collection of definitions of reference systems and coordinates with the reciprocal transformations; there is also an online registry: http://www.epsg-registry.org/.
- 7.
Carta Tecnica Regionale: regional topographic map.
- 8.
Google Street View provides panoramic views from positions along many streets in the world. It was launched in 2007 with images only from cities in the USA, but it grew quickly and now it includes images from many cities and rural areas worldwide, including Milan.
- 9.
This event happens when a new position has been sent from the GNSS receiver installed on the Green Move car to the database table.
- 10.
If the car position is farther than 20 m from any road segment, we assume that there could be an error in the road map and we avoid to make a so great correction.
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Brovelli, M., Negretti, M., Biagi, L. (2017). Information System: Georeferenced Database. In: Bignami, D., Colorni Vitale, A., Lué, A., Nocerino, R., Rossi, M., Savaresi, S. (eds) Electric Vehicle Sharing Services for Smarter Cities. Research for Development. Springer, Cham. https://doi.org/10.1007/978-3-319-61964-4_13
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