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Summary: CarTel: A Distributed Mobile Sensor Computing System
Bret Hull, Vladimir Bychkovsky, Yang Zhang, Kevin Chen, Michel Goraczko,
Allen Miu, Eugene Shih, Hari Balakrishnan and Samuel Madden
MIT Computer Science and Artificial Intelligence Laboratory
cartel@nms.csail.mit.edu
Abstract
CarTel is a mobile sensor computing system designed to
collect, process, deliver, and visualize data from sensors lo-
cated on mobile units such as automobiles. A CarTel node
is a mobile embedded computer coupled to a set of sensors.
Each node gathers and processes sensor readings locally be-
fore delivering them to a central portal, where the data is
stored in a database for further analysis and visualization. In
the automotive context, a variety of on-board and external
sensors collect data as users drive.
CarTel provides a simple query-oriented programming in-
terface, handles large amounts of heterogeneous data from
sensors, and handles intermittent and variable network con-
nectivity. CarTel nodes rely primarily on opportunistic wire-
less (e.g., Wi-Fi, Bluetooth) connectivity--to the Internet,
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