An Event Driven Architecture for Decision Support

An Event Driven Architecture for Decision Support Thomas Everding & Theodor Foerster Geoinformatik 2011, Münster, Germany

GENESIS
GENeric European Sustainable Information Space for environment
FP-7 Project
2008 – 2011
Building generic collaborative information networks
Based on ISO, OGC, W3C and OASIS standards
http://www.genesis-fp7.eu/

Problem
Decision making relies on (environmental) monitoring
Public health affected
Pure information access not sufficient
Phenomena have to be detected and processed as fast as possible
Event Driven Architecture
data acquisition
pre-processing
dissemination

Use Case
Water quality monitoring
Drinking water supply and recreational area
Cyanobacterial blooming in Summer

Villerest reservoir, France Images: Google Maps

Bloom Detection
Cyanobacterial bloom is detected using remote imagery
Indicator: variation of pH value in 24 hours
modified from GENESIS D3100.3, p. 62f. Number Name Origin Units Data values Threshold 3 pH Local measurement pH units 0 to 14 See below 3b pH variation Internal pH units / day -14 to 14 Abs(pH variation) >= 0.5 3c pH status Internal Normal | abnormal If (3b >= 0.5) -> abnormal, else normal

Architecture Gateway Integration Layer Event Processing Raster Processing Raster Data Store Decision Maker pH values Sensor Alert Service Enterprise Service Bus Sensor Event Service Web Processing Service Web Coverage Service

Indicator: pH value variation >= 0.5 within 24 h
ESP Algorithm Sensor Event Service 24h max - min low  high >= 0.5 < 0.5 pH value max min dif dif high low critical pH variation

Benefits
On the fly processing
Measurements are processed as soon as they arrive
Decision makers are notified
Pluggable architecture
Data & processes
Enterprise Service Bus

Thanks for your attention!
Thomas Everding & Theodor Foerster
{everdingt; theodor.foerster}@uni-muenster.de
ifgi.uni-muenster.de
swsl.uni-muenster.de
www.genesis-fp7.eu

http://swsl.uni-muenster.de	245
http://sensorweb.uni-muenster.de	3
http://opennoisemap.org	1
http://swsl	1

An Event Driven Architecture for Decision Support

by Theodor Foerster

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