Geoinformation for Disaster and Risk Management - ISPRS

Figure 4: Kronos user interface showing a live-map situation of
Budapest city with monitoring points in alarm status while two
tunnel boring machines are excavating underground.
Figure 5: Thessaloniki Metro overview map
Their monitoring data are transferred periodically
from Budapest to the Geodata office in Graz
(Austria), where the Kronos database server is
located. There, all data are stored and an automatic
alarm service is operating. The service manages and
executes 260 alarm rules at 3 alarm levels (warning,
alert, alarm) that permanently check all data and in
the case of a potential emergency immediately and
automatically sends alarms to about 31 different
alarm receivers on site. As the system not only
captures monitoring data but also integrates further
project data (e.g. TBM progress), all data can be
linked and used for alarms and interpretation. Fig. 4
shows an example where monitoring points on the
surface (some indicating an alarm) are displayed
live, together with the actual positions of the two
operating TBMs so that their influence on the
monitored deformations can be better interpreted.
Kronos can also use the TBM data to dynamically
change the current alarm levels of the monitoring
sensors and points and/or even automatically
increase their measuring frequency. In this way, a
dynamic monitoring and alarm notification can be
performed. A unique characteristic of this project is
that the system installation follows a modern server
hosting concept where data is not stored locally onsite,
but transferred over hundreds of kilometres
(including across a state border) to a remote, subcontracted
data processing centre that is accessed
and distributes data via the internet.
Figure 6: Measurement data transferred monthly to Kronos at Thessaloniki Metro
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