Smartphone-based solutions to monitor and reduce fuel consumption and CO2 footprint : final report.
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2016-06-01
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Edition:Final report, Jan 1, 2014 - Jan 31, 2016
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Abstract:Smartphones equipped with GPS and several low-energy sensors (e.g., gyroscope, compass, and accelerometer) can provide ; a medium to collect probe data. As smartphone users navigate the transportation networks, their travel modes and ; trajectories can be inferred to estimate fuel consumption and CO2 footprint. The specific goals of the proposed research are: ; (i) Develop new algorithms to estimate the mode of travel (walking, biking, train, car, bus, etc.) and operating mode of a ; vehicle (e.g., idling) based on low-energy sensors available within smartphones; (2) Evaluate the effectiveness of FC and ; CO2 estimation from probe vehicles at various market penetration levels; and (3) Develop shortest paths algorithms for ; finding eco-friendly routes. To achieve these goals, various methodologies are developed and tested with both simulation ; and field data. For example, machine learning algorithms (e.g., support vector machines) are developed to predict the travel ; mode and to detect whether a vehicle has stopped. The results show that the travel mode can be detected accurately, about ; 94% on average, when considering all five travel modes within the sample data. Using the accelerometer data only, the ; results show that the models can accurately detect the times at which the vehicle stops and moves during its journey. To ; predict the impacts of probe vehicle market penetration on estimating fuel consumption, simulation data are created for an ; intersection. Lastly, the shortest path (SP) algorithm for static networks are modified so that the algorithm can find the SP ; for minimizing both the travel time and fuel consumption for a given network. Together, the models and algorithms ; developed in this study can be integrated to support various mobility and environmental applications.
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Main Document Checksum:urn:sha-512:3a786a1759e8df3b42c11a77bf516f271422adab67c1d6cdb2eea6234ce972cf06f4022e8857d32f8dc57df7e496a89aadaf2f8db7ababacd4d9f2de25b465a2