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The SID Creator – A Visual Approach for Integrating Sensors with the Sensor Web Arne Bröring, Felix Bache, Thomas Bartoschek, Corné v. Elzakker AGILE, 20th April 2011
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The SID Creator –
A Visual Approach for Integrating Sensors with the Sensor Web
Arne Bröring, Felix Bache, Thomas Bartoschek, Corné v. Elzakker
AGILE, 20th April 2011
Sensor Layer
Problem: Interoperability Gap
Application Layer
Sensor Web Layer
Arne Broering - [email protected]
Sensor Interface Descriptors (SID)
Bridging Sensor Protocol <-> SWE Protocol
Model to declaratively describe sensor interface: Communication protocol Sensor commands Processing steps Metadata association
SID instances: re-usable and exchangeable
Generic SID Interpreter translates:Sensor protocol Sensor Web
protocol
Arne Broering - [email protected]
SID Model class SensorML6
_Process
System
InterfaceDefinition physicalLayer
dataLinkLayer
networkLayer
transportLayer
sessionLayer
presentationLayer
applicationLayer
DataOutputStream
DataInputStream
CommandDefinition
connections
CommandParameters
ResponseList
PostConditions
PreConditions
outputs
Encoder
Decoder
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Arne Broering - [email protected]
Use Case: School Weather Station
10 high school students 10 university students Task
Integrate weather station witha Sensor Observation Service
“Think Aloud” method
Arne Broering - [email protected]
Use Case: School Weather Station
Structure Separation: Block = #
Field = |Decimal Numbers = .
Data Block 1: Field 1 = Block_Identifier Value: Wind01 Field 2 = time Field 3 = wind_speed Field 4 = wind_direction:
Station|16.09.2010_12:56|10530Q|#
Status|16.09.2010_12:56|72|#
Wind01|16.09.2010_12:56|42.0|23.0|#
:
Creation of an SID
Sensor Data:
SID:
Block
Field
Association with Observation Metadata
Feature := „High School Havixbeck“ 23 m/s 16.9.2010 13:45
Result
Unit of measure
Observed Property := „Wind Speed“
Arne Broering - [email protected]
Observation Offering := Weather
Evaluation of Usability Study
Successful creation of SID: High School students: 2 / 10 University students: 6 / 10
Fully / partly / not understood SID? High School students: 4, 3, 3 University students: 9, 1, 0
SID creation easier than adapter implementation? 5 / 5 students: yes
Arne Broering - [email protected]
Conclusions & Outlook
SID Creator facilitates sensor integration
SID Creator does not yet support full SID model Not all sensor protocols can be described.
Vision: Sharing of SID instances among user
communities Creation of SIDs by sensor manufactures
Arne Broering - [email protected]
Questions?
Thank you!
Arne Broering
SID project @ 52°North: http://52north.org/sidSensor Web lab @ IfGI: http://swsl.uni-
muenster.de
