PDF: BACnet Europe Journal 11 - 10/09

Luftaufnahme des Zentrums für Operative Medizin des Universitätsklinikums Würzburg.
Bird’s eye view on the Centre for Operative Medicine of the Würzburg University Hospital.
Gleichzeitig wurden Schnittstellen
zum eingesetzten SAP
R/3 System sowie zu Energiemanagementsystemenrealisiert.
Dank der innovativen
MPlus Technik können die
Betreiber mit einem einheitlichen
Adressschlüssel über
alle Datenpunkte arbeiten,
haben aber auch die Möglichkeit,Ursprungsadress-Schlüssel
zu verwenden, die noch
auf einigen älteren Unterlagen
zu finden sind. Damit gelingt
es, die getätigten Investitionen
zu schützen und in
eine BACnet-fähige Managementebene
einzubinden.
Bis Mitte 2009 wurden im
Rahmen der Errichtung des
Zentrums für Innere Medizin
weitere Systeme mit insgesamt
37.000 Datenpunkten via
BACnet aufgeschaltet, so dass
das Gesamtsystem heute mehr
als 100.000 Datenpunkte umfasst.
Gegenwärtig werden
mehr als 6.000 Datenpunkte
über die Trendfunktionalität
historisiert. Damit verfügt
das Universitätsklinikum in
Würzburg über ein zukunftsfähiges
System, das die Bewirtschaftung
der Gebäude
sicherer und wirtschaftlicher
macht.
Würzburg is one of Germany‘s
oldest university cities,
alongside Heidelberg,
Cologne and Erfurt. It also
plays a leading role when it
comes to building automation,
following a decision
taken in the early stages to
use only the standardised
BACnet Protocol for all new
construction projects.
It was as early as in 1996
that Johnson Controls introduced
a management level
with a Metasys N1 network
and OWS work stations,
connecting up more than
25,000 data points by 2003.
In 2004, Johnson Controls
technicians then connected
up further BACnet controllers
by Siemens in the Centre
for Operative Medicine with
20,000 data points, followed
in 2006 by installation of the
MPlus management system
with N1 and BACnet OPC
servers to warrant the viable
sustainability of the system.
In doing so, the new management
level combined the
homogeneous DDC system
with the very latest BACnet
technology, also integrating
the 25,000 data points of the
historically evolved N1 network
in the building auto-
mation system. At the same
time, the experts installed a
second MPlus server as fallback
level for performing
generation or maintenance
work without affecting ongoing
operation.
Easy control
and monitoring
During the implementation
phase, Johnson Controls
equipped the building automation
system with Metasys
® Web Access including an
SQL database server, together
with five stationary and
twenty mobile workstations.
The integrated software
package of the MPlus system
permits easy to operate
central control of the system,
and a modern SQL database
archives alarm and trend data.
In addition, whenever an
alarm is triggered the system
also generates a dynamic
document with a detailed description,
in addition to the
datapoint description and
alarm status. This gives the
operating staff access to all
important information at all
times so that they can react
to faults quickly and appropriately
without losing any
time.
Anwendungen Solutions
Universal building
automation system
In 2007, archiving of the dynamic
plant diagrams, data
back-up and dynamic IP allocation
was automated using
the DNS server. In addition,
MPlus was integrated
as a component of the hospital’s
IT domain for better
use of the IT infrastructure.
At the same time, interfaces
were provided to the hospital’s
SAP R/3 system and
energy management system.
The innovative MPlus technology
lets users work with a
uniform address code for all
data points, while also giving
them the possibility of using
original address codes still
featured on some older documents.
This protects the capital
expenditure invested in
the system while integrating
a BACnet-capable management
level.
By mid 2009, setting up the
Centre for Internal Medicine
brought about the connection
of additional systems
with a total of 37,000 data
points via BACnet so that today
the entire system encompasses
more than 100,000
data points. Currently the
trend functionality keeps historical
records of more than
6,000 data points. And so
Würzburg University Hospital
has a viable, sustainable
system for a more reliable
and profitable facility management
for its buildings.
Stefan Bosch
Manager System Product
Support & Engineering
Johnson Controls Systems
& Service GmbH
Stefan.bosch@jci.com
www.jci.com
BACnet Europe Journal 11 10/09
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