geoss adc architecture workshop: sensor web ingo simonis igsi [email protected]
TRANSCRIPT
The Sensor Web
• What is the Sensor Web?
Slide by NASA
OGC: Sensor Web
Scientific View: Sensor Web
Sensor
Sensor System
Sensor Network
Sensor Web
Communication
Communication
Communication
Communication
Applications
The Sensor Web: A Meta-System
SensorSensorSensor
observe
Environment
EffectorEffectorEffector
EffectorEffectorActor
Sensor Web Services
Human Software
affect
stimulate respond / activate
Sensor Web Services Sensor Web Services
SensorSensorSensor
observe
Environment
EffectorEffectorEffector
EffectorEffectorActor
Sensor Web Services
Human Software
affect
stimulate respond / activate
Sensor Web Services Sensor Web Services
Describe Sensors
SensorSensorSensor
observe
Environment
EffectorEffectorEffector
EffectorEffectorActor
Sensor Web Services
Human Software
affect
stimulate respond / activate
Sensor Web Services Sensor Web Services
Discover Sensors
SensorSensorSensor
observe
Environment
EffectorEffectorEffector
EffectorEffectorActor
Sensor Web Services
Human Software
affect
stimulate respond / activate
Sensor Web Services Sensor Web Services
Request Sensor Data
SensorSensorSensor
observe
Environment
EffectorEffectorEffector
EffectorEffectorActor
Sensor Web Services
Human Software
affect
stimulate respond / activate
Sensor Web Services Sensor Web Services
Access Sensor Data
SensorSensorSensor
observe
Environment
EffectorEffectorEffector
EffectorEffectorActor
Sensor Web Services
Human Software
affect
stimulate respond / activate
Sensor Web Services Sensor Web Services
Task Sensors
SensorSensorSensor
observe
Environment
EffectorEffectorEffector
EffectorEffectorActor
Sensor Web Services
Human Software
affect
stimulate respond / activate
Sensor Web Services Sensor Web Services
Subscribe to Sensor Data
SensorSensorSensor
observe
Environment
EffectorEffectorEffector
EffectorEffectorActor
Sensor Web Services
Human Software
affect
stimulate respond / activate
Sensor Web Services Sensor Web Services
Receive Sensor Alerts
Summary
• Describe Sensors and Sensor Capabilities• Discover Sensors• Request Sensor Data• Access Sensor Data• Task Sensors• Subscribe to Sensor Data• Receive Alerts from Sensors
What is Required?
• Sensor-related vocabularies– Sensor types– Observed properties
• Sensor-related ontologies?– Classes of Sensors– Sub-types, relationships, …
What is Required?
• Sensor-related standards– Content standards (model, encoding)– Services– Transports
Example: Marine Metadata Interoperability
Sensor Web Related Tasks
• CL-06-02 (Key Climate Data from Satellite Systems)• CL-07-01 (Seamless Weather and Climate Prediction
System)• DA-07-04 (Sensor Web Enablement for In-Situ
Observing Network Facilitation)• DA-07-05 (Higher Level Data Product Tools)• DI-06-04 (Tsunami Early Warning System of
Systems)
Sensor Web Related Tasks
• DI-06-13 (Implementation of a Wildland Fire Warning System at Global Level)
• WE-06-02 (Space-based Global Observing System for Weather)
• CEOS WGISS Committee on Earth Observation Satellites, Working Group onInformation Systems and Services)
GEOSS Sensor Web Workshop
• Organized by task DA-07-04• May 15-16, 2008• @GEO Secretariat, Geneva, Switzerland• No fees, but registration required• Invitation and agenda online:
http://www.earthobservations.org/meetings
Discussion I
• the vast majority of sensor data is unstructured, poorly described, difficult to be accessed. BUT: no metadata/structure will be provided for this data
• how to consume and use sensors that have no standardized way of access/transport/etc. (unstructured world)?
• current GEOSS Architecture focuses on structured data, well defined service interfaces etc. and blocks out most sensor data
Discussion II
• sensor data is often produced on the fly, other GEOSS data is mostly archived
• educate sensor developers/providers• encourage users to use standards for data data
transport/encoding/description• make a start and show how it works: Provide some
basic IOC, including things like unique identifier, URN-resolver, dictionaries, vocabularies etc. .Step away from simple end-to-end showcases. IOC has to support aspects like traceability
Discussion III
• talk to sensor manufactures (?) – better convince various communities that then talk to manufactures (chicken/egg problem)
• coordinate with other tasks, in particular DA07-04 (Sensor Web for in-situ sensors)