microsoft research faculty summit 2008. liqian luo networked embedded computing microsoft research
TRANSCRIPT
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Microsoft Research Faculty Summit 2008
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SenseWeb and SensorMap
Liqian LuoNetworked Embedded ComputingMicrosoft Research
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Overview
SenseWeb is a peer-produced sensor network to enable sharing of sensors and data across the globe
Sensor registration and metadata managementData publication and global sharingSpatio-temporal data exploration
SwissEx: weather stations
Taiwan: rain sensors
Citysense: urban sensor network
Asia-Pacific Environmental
Sensor Grid
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Challenges
HeterogeneitySensor hardwareResource capability: bandwidth, power, computationWillingness to shareMeasurement accuracy
ScalabilityStreaming all raw data from all sensors to all applications not feasible
Security and PrivacyData Verifiability, Trust
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SenseWeb Features (1/3)
User contributed sensors and dataEach scientist deploys at small scale; everyone can use shared instrumentationLarger spatio-temporal coverage than any single systemCosts amortized over multiple experimentsSame datasets used for multiple analysesFeatures:
Flexibility in creating new sensor types/schemersFlexibility in registering sensors and data sources
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SenseWeb Features (2/3)
Real-time data presentationEnable real-time monitoring of sensorsFeatures:
Snapshot data view to inspect the latest data entryTime series chart to observe data trend in real-time
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SenseWeb Features (3/3)
In-situ data analysisDiscover data correlations, dependencies, and distributions via one clickFeatures:
Comparison chart to view correlations of multiple sensors (such as temperature, humidity)Contour maps overlaid on top of terrain maps to view spatial distributionsVisualize spatio-temporal distribution by overlaying data from different times
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System Architecture of SenseWeb
Coordinator
Application Manager
Sensor Manager
User Manager
Sensor Gateway:
GSN (EPFL)
Transformer: Iconizer
Transformer: Graph
Generator
Sensor Gateway: DataHub
(MSR)
Transformer:Map
Generator
Transforme X Application XD
ata
Tran
sformers
Co
ordina
tor
Sen
sor
Ga
tew
ays
Sen
sors
App
lications
Transforme Y Application Y
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RFP ProjectsSwissEx
demo