Sensor Web Enablement

1
Sensor Web Enablement

• ??a?e?t???????t?ta t?? ???p??? a?s??t???? µe t??
  te???????e? t?? ?a???sµ??? ?st??

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???p??? ??s??t??e?

• ??s??t??e? - ß??s???ta? pa?t??!
• ???p??? a?s??t??e? a?s??t????? ??µß???
  ef?d?asµ???? µe epe?e??ast??? ?s??
• ???at?t?te? epe?e??as?a? µet??se??
• ???at?t?te? d??t??s??
• ?p?st????? a??µa ?a? µ????? ?e?t????????
  s?st?µ?t??
• Internet of Things ??aµa ?at? t? ?p??? ???e
  s?s?e?? ?s?d?p?te µ???? ?a e??a? e? d???µe?
  d?e????s??d?t?s?µ? (addressable) st? Internet
• Sensor Web S?µp?a?? ?p?d?µ?? a?s??t???? µe t??
  te???????e? t?? Web ??a t?? pa???? GIS ?a? LBS
  (Sensor data ?? p???? t?? Web)

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Sensor Web Enablement

• ???t?ß????a t?? Open Geospatial Consortium (OGC)
  ??a d?µ??????a a????t?? p??t?p??
  d?a?e?t???????t?ta? (interoperability)
• ?p?ped? afa??es?? (abstraction layer) µeta??
  ete???e??? a???te?t?????? a?s??t???? ?a? t?? Web
• G??sse? s?µa?s?? (Markup Languages)
• OM (Observations and Measurements)
• SensorML (Sensor Markup Language)
• TML (Transducer Markup Language)
• ?p??es?e? ?st?? (Web Services)
• SOS (Sensor Observation Service)
• SAS (Sensor Alert Service)
• SPS (Sensor Planning Service)
• WNS (Web Notification Service)
• ?????aµµat?st???? ??epaf?? ?fa?µ???? (API)
• ????p???s? ?p?????t?? te????????? XML, HTTP, SOAP

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?as??? ???????a GIS ?a? SWE

• Feature of interest (Ge???af??? ?????sµa
  e?d?af????t??) ??t?t?ta t?? p?a?µat???? ??sµ??
• Spatial Database (??s? ??????? ?ed?µ????)
• Phenomenon (Fa???µe??) ?,t? µp??e? ?a
  pa?at????e?
• Observed Property (?a?at????µe?? ?d??t?ta)
• Observations Measurements (?a?at???se?? ?a?
  ?et??se??)
• Procedure (??ad??as?a) ?????? afa??es? e???
  a?s??t??a, ????sµ????, ??????? p?? pa???e?
  µet??se??
• Sensor (??s??t??a?) ???f?t??p?a? (transducer)
  p?? µet?at??pe? e??te???? e?e??sµata se ??e?t????
  s?µa
• ?s??µat?? a?s??t??a? a?s??t??a? ????? e?s??µat?
  s??des? µe p??? ?e?µat??, e?de??µ???? µe as??µat?
  d?epaf? ep????????a?

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???t?a ?s??µat?? ??s??t???? (WSN)

• ?p????? ?a t?p??et????? se d?s???a s?µe?a ?a?
  ?????? p??ß??µata ????ta??a?
• ?e?????sµ??a e?e??e?a?? ap???µata s??ep????ta?
• ????? eµß??e?a
• ?e??µ??? epe?e??ast??? ?s??
• ?????? ??a a??pt??? e?d???? energy-aware
  p??t??????? d??µ?????s?? (routing)
• ???s? s???e?t??t?? (Sinks) ??a
• S?ss??e?s? / S???????s? ded?µ???? (data
  aggregation)
• ???? p??? ete???e?? d??t?a (Gateway)
• ?ata??µ? e?e?d??e?µ???? a?s??t????, p.?. GPS

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?p??es?e? t?? SWE - SOS

• Sensor Observation Service (?p??es?a ?a?at???se??
  ??s??t????)
• Data-Pull model epe??t?se?? ??a µet??se??
  a?s??t???? ?a??? ?a? ??a µetaded?µ??a a?s??t?????
  ??µß??
• ?as???? ?e?t?????e?
• RegisterSensor ?ata????s? a?s??t????? ??µß??
• InsertObservation ??sa???? µ?t??s??
• GetCapabilities ????t?s? µetaded?µ???? ?p??es?a?
  ?a? d?a??s?µ?? e?d?? µet??se??
• GetObservation ?pe??t?s? ??a µet??se??

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?????aµµa ???? ????µ?t?? ?a?a????? ?ed?µ???? SOS
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?????aµµata ???? ????µ?t?? ?ata?a??t? ?ed?µ????
SOS
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?p??es?e? t?? SWE - SAS

• Sensor Alert Service (?p??es?a S??a?e?µ??
  ??s??t????)
• Data-Push model p?????s? ded?µ???? /
  e?d?p???se?? st?? pe??t? ap? t? d??t?? ?at?p??
  s??d??µ?? (subscribe alert)
• ?as???? ?e?t?????e?
• Advertise / CancelAdvertisement ??af?µ?s? ??a
  d?a??s?µe? µet??se?? µe d??at?t?ta ?p?st??????
  e?d?p???se??
• Publish ??µ?s?e?s? µet??se?? se ??a XMPP
  conference
• GetCapabilities ????t?s? µetaded?µ???? ?p??es?a?
  ?a? d?a??s?µ?? d?af?µ?se??
• Subscribe / Cancel Subscription ??t?s? s??d??µ??
  ap? t?? pe??t? ??a e?d?p???se?? µe ß?s? ???t???a
  s??a?e?µ??
• SASAlert ??d?p???s? ?at?stas?? s??a?e?µ?? ap? t?
  SAS

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?????aµµa ???? ????µ?t?? SAS

• ?a?a?????
• Advertise d????e? d??at?t?ta pa?a?????
  e?d?p???se?? ??a ??p??? e?d?? µ?t??s??
• AdvertiseResponse ????e? XMPP Multi User Chat
  (MUC1) ??a d?µ?s?e?s? µet??se??
• ?et??se?? d?µ?s?e???ta? (Publish) se XMPP st?
  MUC1, ??at?? st? SAS

• ?e??t??
• GetCapabilities ep?st??fe? d?a??s?µe? d?af?µ?se??
• Subscribe p??sd?????e? s?????? s??a?e?µ??
• SubscribeResponse ????e? XMPP MUC2 ??a
  e?d?p???se?? s??a?e?µ??
• SAS ap?st???e? st? MUC2 SASAlert a? ??a??p????e?
  ? s??????, ??at? st?? pe??t?

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?p??es?e? t?? SWE SPS ?a? WNS

• Sensor Planning Service (?p??es?a ?????aµµat?sµ??
  ??s??t????)
• ??t???d?t?s? (tasking) a?s??t???? ???? µet??se??
  ?at? ß????s?
• ?s??????? e?d?p???s? µet? t? p??a? t?? ap?st????
• Web Notification Service (?p??es?a ??d?p???se??
  ?st??)
• ?p?st????? as???????? e?d?p???s?? µ?s? SMS,
  email, IM ?a? ????? µe??d??

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???p???se?? ?p??es??? SWE

• NASA
• Northrop PulseNet
• 1Spatial Group Ltd
• Compusult Limited
• SANY Consortium
• Geomatys
• ?a?ep?st?µ?a, p.?. Melnourne ?.?.
• 52North Initiative for Geospatial Open Source
  Software GmbH
• ???p???s? ?a? t?? 4 ?p??es??? (SOS, SAS, SPS,
  WNS)
• ?????t?? ??d??a (Open source)
• ?de?a GPL

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?e??t? ?e??pt?s??

• Se?????
• ?a?a???????s? ?e?µ???as?a? se ???? f??a??? a?a???
  p.?. ap?????
• ?pa?t?se??
• ???at?t?ta epe??t?s?? ??a µet??se?? ?e?µ???as?a?
  µe ??????? ???t???a ? ??a s???e???µ??? a?s??t??a
• ?a???s?as? µet??se?? ep?pt???, p.?. µe ??af???
  pa??stas?
• ???at?t?ta e?d?p???s?? µe ?pt??? t??p? ??a
  s?????e? ?e?µ???as?a? p?? ?epe????? ep???µ?t?
  ???t???a
• ???d?a??af??
• ???s? p??t?p?? ???p???se?? SOS ?a? SAS ap? t?
  52North
• ?s??µat?? p????aµµat???µe??? ??µß?? SunSPOT
• ???p???s? se Java, µe ???s? Swing ??a ??af????
  d?epaf??

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SunSPOTs

• Sun Microsystems Small Programmable Object
  Technology
• 32-bit ARM920T, 180MHz, 512K RAM, 4MB Flash
• ?s??µat? d??t??s? IEEE 802.15.4, d??µ?????s? AODV
  / LQRP
• ??s??µat? s??des?µ?t?ta µ?s? USB ?a? serial
• 2 e?d?
• Sta?µ?? ß?s?? (Basestation)
• Free range SunSPOTs
• ??s??t??e?
• Te?µ???as?a?
• F?te???? ??tas??
• ?p?ta???s??µet?? 3 a?????
• ?µes? e?t??es? ????????? ???a??? Java, µe t?
  ???µa Squawk VM
• ?p?st????? CLDC / MIDP Profile t?? Java Micro
  Edition
• ????e? SDK ap? t? Sun, t?????sa ??d?s? 5.0,
  pe???aµß??e? e??a?e?a p??s?µ???s??

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??p?????a ???t???
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S?stat??? ???p???s??

• ?pa?t??µe?a t? ?e?t?????a t?? SWE ?p??es???
• ???t?pe? ???p???se?? SOS ?a? SAS t?? 52North
• PostgreSQL Database Server, µe ??????? epe?t?se??
  (PostGIS Spatial Extentions)
• Openfire XMPP Server
• ???p???µ??a e?d??? ??a a?t?? t? µe??t?
• SunSPOT Connector Host Application
• SunSPOT Application
• Client GUI
• User Utility Libraries

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????sµ???, ??ß??????e? ?a? ???a?e?a

• Apache Tomcat Servlet Container
• Smack XMPP API
• Joda Time API (ISO8601 compliant)
• SUN Netbeans IDE
• Java Platform Standard Edition
• Java Platform Micro Edition
• Apache Ant ?a? Maven
• Apache XMLBeans
• SunSPOT API
• SUN Swing ?a? AWT
• JFreeChart ?a? JCommon

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???s? SunSpotMsg

• ??epaf? µeta?? Connector ?a? ??µß?? SunSPOT
• Custom µ???µa SunSpotMsg µe t?p???
• MSG_TYPE_REG_REQ
• MSG_TYPE_RE_RESP
• REGISTERED_OK
• REGISTER_FAIL
• MSG_TYPE_READING
• Of???µ?? ????? e??? de?ad???? d?p??? a???ße?a?
  (double) ??a t?µ?? µet??se??

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SunSPOT Connector

• ??ep?f? µeta?? t?? SunSPOTs ?a? t?? ?p??es??? SOS
  ?a? SAS
• ??a??te? p??sßas? st?? p???? ?e?t???????t?ta t??
  Java Standard Edition, ?a? se ??a ?p?s????? t??
  Micro Edition ??a t?? ep????????a µe ta SunSPOT
• ?et?f?as? t?? µ???µ?t?? ap? t? custom SunSpotMsg
  sta p??t?p?p???µ??a µ???µata XML RegisterSensor,
  InsertObservation, Advertise t?? SWE
• ???t?µ????e a?t?? ? ?e?t????p???µ???? s?ed?asµ??
  ???? a???µ???? ?p?????st???? ?s???? ?a? e?e????a?
  t?? ?p?????st? st?? ?p??? f????e?e?ta?, ??a?t?
  t?? pe?????sµ?? t?? SunSPOT
• ??????µ?t??? ???p???s? µe ??a ??µa PacketListener
  ?a? p???ap?? ??µata MessageHandler ??a t??
  epe?e??as?a ???e e?se???µe??? SunSpotMsg
• ?p?? d?epaf? ???st?

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SunSPOT Midlet

• Midlet ßas??? ???s? efa?µ???? t?? MIDP Profile
  t?? Java Micro Edition
• ?at? t?? e?????s? ap?st???eta? a?t?s?
  MSG_TYPE_REG_RESP p??? t?? Connector
• Se pe??pt?s? ep?t???a?, µet?ßas? se ?at?stas?
  de??µat?????a? a?? 30 de?te???epta ?a? ap?st????
  st?? Connector µ?s? SunSpotMsg µe t?p?
  MSG_TYPE_READING
• Se pe??pt?s? ap?t???a? e???af??, te?µat?sµ?? t??
  Midlet
• F?te???? e?de??e?? ap? ta LED e?d?p????? ??a ???e
  st?d?? ?e?t?????a?
• ?p?t???? e???af? p??s???
• ?p?t???? e???af? ???????
• ?e??µat?????a µp?e

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?fa?µ??? t?? pe??t?

• ?????? Java Standard Edition efa?µ??? µe ???s?
  Swing ?a? AWT ??a t? ??af??? d?epaf? ???st? (GUI)
• ??a????sµ?? se 2 tµ?µata
• SOS ?e?t???????t?ta
• Get SOS Capabilities ??a a???t?s? µetaded?µ????
  t?? SOS
• Get Observations ??a a???t?s? µet??se?? ?a?
  s?ed?asµ? s?et???? ??af???? pa??stas??
• ???at?t?ta p??sd????sµ?? ???????? pe???d?? ?????
  µet??se?? ?a? s???e???µ???? a?s??t??a ap? ??sta
  t?? d?a??s?µ??
• SAS ?e?t???????t?ta
• Get SAS Capabilities ??a a???t?s? µetaded?µ????
  t?? SAS
• ?e?t?????a Subscribe t? Alerts µe ???sµ?
  ???t????? s??a?e?µ??
• ??µa PacketListener pa?a??????e? t?? XMPP Server
  ??a e?d?p???se?? (alerts) ap? t? SAS
• ?pt??? e?d?p???s? µe µ???? Java pa??????
• ???at?t?ta Cancel Subscription

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G?af??? ??epaf? pe??t?
23
???s?µ???s?

• ? s???ta efa?µ???? t?? SUN ??a ta SunSPOTs
  pe???aµß??e? t? pe??ß????? p??s?µ???s?? Solarium.
• ???s?µ???s? ep?t??pe? t? ??????? epa???e?s?
  ??d??a p??? t? d???µ? se p?a?µat????? ??µß???.
• ??????? ???sµ?? t?? t?µ?? p?? µet???? ??
  a?s??t??e? µ?s? t?? ??af???? pe??ß?????t??,
  e??p??et???? ??a p?????s? s??????? s??a?e?µ??
  ?at? ß????s?.

24
?e??ß????? p??s?µ???s?? Solarium
25
G?af??? pa??stas? ap? d???µ?? µe e??????? SunSPOT
26
????µ?? µe p?a?µat??? SunSPOTs

• ????µ? µe p?a?µat??? SunSPOT de? pa???s???e? t??
  ?d?a e?e????a st? d?aµ??f?s? t?? ap?te?esµ?t??.
• Se f?s????????? s?????e? de? e??a? e????? ?a
  e?a?t??s??µe ta ?p?st?????µe?a ???a (ap? -40C
  ??? 60C).
• ? t?µ? ?e?µ???as?a? p?? ?ataµet??ta? de? e??a? ?
  p?a?µat??? e??te????, a??? ? ?e?µ???as?a t??
  e?s?µat?µ???? ADC.
• ??aµ????ta? µ???? e??? µetaß????, ??µa???µe?a
  ???? ap? t? ?e?µ???as?a t?? ADC
• ?p????se?? ap? t? µ?s? ?e?µ???as?a d?µ?????????a?
  µe t? ß???e?a
• ??eµ?st??a
• ??aµµ???? ?e????

27
G?af??? pa??stas? ap? d???µ?? µe p?a?µat???
SunSPOT
28
??d?p???se?? ?at?stas?? s??a?e?µ??

• ???s?µ???s?
• ?p??ßas? ??? ????? 22C
• ??a?µat??? SunSPOT
• ?p??ßas? ??t? ????? 33C

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?e?????sµ?? ??????sa? ???p???s??

• ??a µ??? d?af?µ?s? (advertisement) ap? t??
  pa?a????
• ??a t?????sa s??d??µ? (subscription) ap? t??
  pe??t?
• ????p??????e µ??? ? a?s??t??a? ?e?µ???as?a? t??
  SunSPOT
• ????p?? pa?aµet??p???s? ???s? a??et??
  p???a????sµ???? (hard-coded) pa?aµ?t???
• ?e??????a ??a ße?t??s? t?? ßa?µ?? pa?a?????a?
  a???µ??? ???s? ??µ?t??
• ?p?ß??t?st? a???p???s? p????

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?ate????se?? ??a t? µ?????

• ???p???se?? ap? pe??ss?te???? f??e??
• ????p?st?a ep?p?d?? pa?a????? (production /
  industrial strength)
• ??a?e?t???????t?ta µe s?µa?t??? ??a p??t?????a
• IEEE 1451 (Standards for a Smart Transducer
  Interface for Sensors and Actuators)
• ??t?pe????af? µ?sa ap? TEDS (Transducer
  Electronics Data Sheet)
• ??t??at?stas? SAS ap? SES (Sensor Event Service)
• ?e?t??µ??e? d??at?t?ta? f??t?a??sµat??
  ap?te?esµ?t??
• ??? µ??t??? ßas?sµ??? se s?µß??ta, pe????af? µ?s?
  ???ssa? s?µa?s?? EML (Event Pattern Markup
  Language)

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?pe?s??desµ??

• OGC Sensor Web Enablement Work Group
• http//www.opengeospatial.org/projects/groups/sens
  orweb
• 52North Initiative for Geospatial Open Source
  Software GmbH
• http//52north.org/
• SunSPOT Official Website
• http//www.sunspotworld.com