fpraus.bib
@mastersthesis{PrausDipl2005,
author = {Friedrich Praus},
title = {A versatile networked embedded platform for {KNX/EIB}},
school = {Vienna University of Technology, Institute of Computer Aided Automation,
Automation Systems Group},
year = {2005},
abstract = {{The deployment of home and building automation systems allows to
increase comfort, safety and security and reduce operational cost.
Today such systems typically follow a hierarchical distributed approach.
While control networks interconnect smart sensors and actuators,
a backbone network provides the infrastructure for management tasks.
Devices interconnecting these networks have a strategic role. Especially
in the home domain, the integration of various control and data networks
is essential for maximum benefit.
The European Installation Bus (KNX/EIB) is a popular control network
designed to enhance electrical installations in buildings. It uses
a proprietary twisted pair (TP) medium to interconnect devices like
smart light switches and dimmers. The objective of this thesis is
to design an embedded and versatile platform for ongoing development
in the area of home and building automation systems with a focus
on KNX/EIB TP. Besides two KNX/EIB TP interfaces, it provides RS-232,
USB and Ethernet connectivity. The platform moreover has sufficient
processing power and storage, enabling it to act as a ``smart router''
or gateway.
The thesis first presents a classification of control network devices.
It then discusses the hardware and software requirements for the
desired platform. A detailed presentation of its design, implementation
and operation with respect to hardware and software follows.}},
url = {http://www.praus.at/dl.php?url=diplomarbeit_fpraus_printed.pdf}
}
@inproceedings{Praus2008,
author = {Praus, Fritz and Flanitzer, Thomas and Kastner, Wolfgang},
title = {Secure and customizable software applications in embedded networks},
booktitle = {Proc. 13th IEEE International Conference on Emerging Technologies
and Factory Automation (ETFA 2008)},
year = {2008},
pages = {1473--1480},
abstract = {Improved technology and economically feasible costs allow a widespread
deployment of embedded systems in various application domains - ranging
from integration into cars, industrial automation up to building
automation. A sophisticated security architecture considering the
challenging constraints on these systems and providing secure communication,
secure software as well as physical security is needed. This paper
presents an approach to allow untrusted, possible (intentional) malicious
software to be executed securely on a low end embedded system. A
proof of concept and an evaluation for a building automation system
is given.},
doi = {10.1109/ETFA.2008.4638590},
owner = {fritz},
timestamp = {2008.10.24},
url = {http://www.praus.at/dl.php?url=etfa2008_fpraus_secapp_final.pdf}
}
@inproceedings{PrausETFA2007,
author = {Fritz~Praus and Wolfgang~Granzer and Georg~Gaderer and Thilo~Sauter},
title = {{A Simulation Framework for Fault-Tolerant Clock Synchronization
in Industrial Automation Networks}},
booktitle = {Proc. 12th IEEE International Conference on Emerging Technologies
and Factory Automation (ETFA 2007)},
year = {2007},
pages = {1465--1472},
month = {September},
abstract = {Many applications such as distributed measurements or real-time networks
benefit from a common notion of time. Protocols providing high precision
and simple clock synchronization are necessary to achieve such a
common time base. However, most of the available protocols are lacking
with regard to fault tolerance and performance in case of a fault.
The project IMAGINE (Introduction of Master Group Based Industrial
Ethernet) overcomes these limitations by introducing a fault-tolerant
IEEE 1588 master group. A proof of concept for a largeor even medium-
scale network is, however, very difficult to obtain under laboratory
conditions. Therefore, a simulation framework has been developed,
which is presented in this paper.},
owner = {fritz},
timestamp = {2007.08.30},
url = {http://www.praus.at/dl.php?url=ETFA07_Simulation.pdf}
}
@inproceedings{PrausINDIN2009,
author = {Fritz Praus and Wolfgang Granzer and Wolfgang Kastner},
title = {{Enhanced Control Application Development in Building Automation}},
booktitle = {{Proc. 7th IEEE International Conference on Industrial Informatics
(INDIN 2009)}},
year = {2009},
pages = {390--395},
month = {jun},
abstract = {Building Automation Systems (BAS) lack a common application model.
Thus, the development of control applications (CAs) is not a very
straightforward task and requires profound expertise. When in addition
security has to be considered, inexperienced developers are overwhelmed
by the manifold demands and constraints. This paper presents an approach
to ease the CA development and at the same time to provide security
for their execution. The main idea is to base the application model
on a generic ontology and to provide a sandbox for the execution
environment. The programming concept, configuration and management
issues as well as the workflow are described in detail. Finally,
a proof of concept for BACnet and KNX is given.},
owner = {fritz},
timestamp = {2009.04.09},
url = {http://www.praus.at/dl.php?url=indin2009_fpraus_controlapp_final.pdf}
}
@inproceedings{PrausINDIN2010,
author = {Fritz Praus and Wolfgang Kastner},
title = {{Secure Control Applications in Building Automation using Domain
Knowledge}},
booktitle = {{Proc. 8th IEEE International Conference on Industrial Informatics
(INDIN 2010)}},
year = {2010},
pages = {52--57},
month = {jul},
abstract = {When security-critical applications are considered to be integrated
into the building automation domain, two requirements need to be
fulfilled: providing security features at the network level and support
for security mechanisms at the application level. This paper tackles
the second goal using domain knowledge based on existing and related
international application level standards. After the demands for
secure applications and an underlying security policy are stated,
a system model is derived that allows specifying security attributes
for data points, function blocks, embedded applications, and, finally,
distributed control applications. In conclusion, the applicability
of the model is demonstrated for selected use cases.},
owner = {fritz},
timestamp = {2010.04.26},
url = {http://www.praus.at/dl.php?url=indin2010_fpraus_policy_final.pdf}
}
@inproceedings{Praus2008a,
author = {Fritz~Praus and Wolfgang~Kastner},
title = {User applications development using embedded Java},
booktitle = {Proc. Konnex Scientific Conference},
year = {2008},
month = {November},
abstract = {Building Automation Systems (BAS) aim at improving control and management
of mechanical and electrical systems in buildings. It is the task
of Sensors, Actuators and Controllers (SACs) to interact with the
physical environment and perform measurement and control tasks. In
building automation networks they, typically, consist of a network
interface and a microcontroller (MCU) where an application specific
hardware is attached. In a similar way, the software may be split
into a system software part providing basic functionality and a (customizable)
user application (UA) dealing with the attached hardware. Within
KNX this concept is well known, as customized application modules
are connected via the physical external interface to standardized
bus attachment units. However, KNX UA development traditionally required
profound hardware knowledge.
This paper presents an approach to leverage user application development.
With limited hardware resources of SACs in mind, an embedded virtual
machine provides a lean environment for Java based user applications.
Interfacing to KNX and the specific hardware is done by a well-defined
Java user application programming interface. In addition, a management
interface allows to download and configure UAs inside the virtual
machine. The programming concept, configuration and management issues
as well as the workflow are described in detail. As proof of concept
for SACs supporting our approach two hardware platforms have been
chosen: a stripboard equipped with an ATMega168 MCU and KNX connection
via the Freebus project, and KNXcalibur, a Fujitsu MCU based board
connected to KNX via TP-UART. The contribution is rounded up by a
first performance analysis.},
url = {http://www.praus.at/dl.php?url=knx08_embeddedjava_final.pdf}
}
@inproceedings{PrausJSC2006,
author = {Fritz~Praus and Wolfgang~Kastner},
title = {{A versatile networked embedded platform for KNX/EIB}},
booktitle = {{Junior Scientific Conference}},
year = {2006},
pages = {{59-60}},
month = {April},
abstract = {{The deployment of home and building automation systems (BAS) allows
to increase comfort, safety and security and to reduce operational
cost. Today such systems typically follow a hierarchical distributed
approach. While control networks interconnect smart sensors and actuators,
a backbone network provides the infrastructure for management tasks.
Devices interconnecting these networks play a strategic role. Especially
in the home domain, the integration of various control and data networks
is essential for maximum benefit.}},
url = {http://www.praus.at/dl.php?url=jsc06_fritz_praus_final.pdf}
}
@inproceedings{PrausKNX2004,
author = {Fritz~Praus and Wolfgang~Kastner and Oliver~Alt},
title = {Yet Another All-purpose {EIBNet/IP} Gateway},
booktitle = {Proc. Konnex Scientific Conference},
year = {2004},
month = {October},
abstract = {{Currently, we are designing a universal-applicable gateway to KNX
systems. The hardware is based on an Fujitsu 16bit micro-controller
with 24 MHz, 24Kbyte RAM, 384Kbyte flash memory, full USB support,
4 UARTs, 3 channels for I2C bus communication and an external bus
interface. Our gateway will support EIBnet/IP (tunneling and routing)
with an embedded web-server facilitating HEAD, GET and POST requests
and CGI scripts.
The gateway is intended as universal platform for ongoing development
concerning integration of other fieldbus and multimedia bus systems
to KNX, as well as gateway for remote IP services. In addition, it
serves as a base for work in progress regarding the development of
a set-top box for integration into the OSGi environment and plug
and play networks.
The paper presents the design of the hardware interfaces and interesting
parts of the software implementation.}},
url = {http://www.praus.at/dl.php?url=Multipurpose%20EIB%20Gateway.pdf}
}
@inproceedings{PrausKNX2006a,
author = {Fritz~Praus and Wolfgang~Kastner and Georg~Neugschwandtner},
title = {{A versatile networked embedded platform for KNX/EIB}},
booktitle = {Proc. Konnex Scientific Conference},
year = {2006},
month = {November},
abstract = {{The deployment of building automation systems (BAS) allows to increase
comfort, safety and security and reduce operational cost at the same
time. Today such systems typically follow a twolayered hierarchical
approach. While control networks interconnect distributed sensors,
actuators and controllers, a backbone provides the necessary infrastructure
for management tasks hosted by configuration and management devices.
In addition, devices interconnecting the control network with the
backbone on the one hand and the backbone with further networks (e.g.,
the Internet) on the other hand play a strategic role. According
to their particular functionality and the resulting demands on the
necessary hardware and software support, BAS devices can be categorized
in three distinct device classes. Based upon this classification
the paper presents a generic hardware and software framework whose
flexible design fits all these classes. Devices for a particular
purpose (i.e., class) can be derived from the universally applicable,
generic framework, easing development. This process is demonstrated
for a multi-purpose hardware platform applicable to multiple device
classes. Moreover, three case studies for this platform are presented
which illustrate how software applications from all classes make
use of this universally applicable platform. }},
url = {http://www.praus.at/dl.php?url=praus-versatile_platform-knxsci06-website.pdf}
}
@inproceedings{PrausKNX2010,
author = {Fritz Praus and Christian Reinisch and Paul Leitner and Wolfgang
Kastner},
title = {{Open Source Approaches to Integrate KNX into Media Centers}},
booktitle = {{Proc. Konnex Scientific Conference}},
year = {2010},
month = nov
}