Sensor Web Enablement SWE

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Sensor Web Enablement (SWE)
Presentation to WGISS China, 2008
Wyn Cudlip BNSC/QinetiQ wcudlip_at_qinetiq.com
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Introduction

• Open GeoSpatial Consortium (OGC) is working on
  the development of interface standards to support
  the development of Sensor Webs.
• Referred to as SWE
• A Sensor Web is more than just interfaces.
• True Sensor web includes intelligence or at
  least a degree of automation so that it offers
  changing behaviour.

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SWE Provides Standard Interfaces
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OGC SWE Components

• Observations Measurements (OM)
• XML Encoding compliant with OGC Best Practices
  Document 05-087r4
• Subset of encoding to handle the following
  observations
• Temperature, Rainfall, Wind Speed/Direction,
  Humidity, Air Pressure
• Sensor Modelling Language (SensorML)
• XML Encoding compliant with OGC Implementation
  Specification 05-086r2
• Subset of encoding to describe the following
  sensors
• Weather Station (WS-2300)
• WebCam (e.g. Logitech QuickCam Messenger)
• Transducer Markup Language (TML)
• XML Encoding compliant with OGC Implementation
  Specification 06-010r2
• -

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OGC SWE Components

• Sensor Observation Service (SOS)
• XML Encoding compliant with OGC Implementation
  Specification 06-009r1
• A web service for describing Sensors and
  obtaining their Observations

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OGC SWE Components

• Sensor Planning Service (SPS)
• XML Encoding compliant with OGC Implementation
  Specification 05-089r3
• A web service for tasking a sensor

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OGC SWE Components

• Sensor Alert Service (SAS)
• XML Encoding compliant with OGC Discussion Paper
  06-028
• A web service that allows a sensor to be
  monitored for an alarming condition, e.g.
  temperature exceeds a given value
• A user may subscribe to receive alerts

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OGC SWE Components

• Web Notification Service (WNS)
• XML Encoding compliant with OGC Best Practices
  Document 06-095
• Web Service for mediating asynchronously between
  web services, e.g.
• Confirmation of a tasking request from an SPS
• Issuing an alert from an SAS when an alarming
  condition occurs

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Conclusion

• OGC SWE Interface Standards are at an early stage
  of development.
• Good time to test interfaces in real
  applications.
• Provide feedback to developers.
• A Sensor Web is more than just interfaces.
• Need to consider full end-to-end system.
• OSCAR-SWE Demonstrator available at
• http//81.29.75.200/oscar