Publications
Conference Contributions | PhD Theses | Technical Reports
Conference Contributions
Jürgen Jessen, Marcus Venzke and Volker Turau. Design Considerations for a Universal Smart Energy
Module for Energy Harvesting in Wireless Sensor Networks. In Proceedings of the Ninth Workshop on Intelligent
Solutions in Embedded Systems (WISES 2011), July 2011, pp. 35–40. Regensburg, Germany.
@InProceedings{Telematik_JVT_SmartSupply,
author = {Jürgen Jessen and Marcus Venzke and Volker Turau},
title = {Design Considerations for a Universal Smart Energy
Module for Energy Harvesting in Wireless Sensor Networks},
booktitle = {Proceedings of the Ninth Workshop on Intelligent
Solutions in Embedded Systems (WISES 2011)},
pages = {35-40},
day = {07-08},
month = jul,
year = 2011,
location = {Regensburg, Germany},
}
Abstract:
This paper presents the design of a universal energy
module for nodes in wireless sensor networks. It supports a wide
range of energy harvesters and energy storage systems. The
focus is on
the efficient conversion and storage of energy and
to provide a smart
platform for higher level energy management
functions. The module
provides maximum power point tracking
and supports hybrid harvesters.
Marcus Venzke, Mikko Jania and Volker Turau. VoIP over WLAN: Replacing Professional Mobile Radio on
Airports. In Proceedings of the Second International Workshop on
Aircraft System Technologies (AST'09), March 2009. Hamburg, Germany.
@InProceedings{Telematik_VJT_2009_VoIP,
author = {Marcus Venzke and Mikko Jania and Volker Turau},
title = {VoIP over WLAN: Replacing Professional Mobile Radio on
Airports},
booktitle = {Proceedings of the Second International Workshop on
Aircraft System Technologies (AST'09)},
day = {26-27},
month = mar,
year = 2009,
location = {Hamburg, Germany},
}
Abstract:
This paper proposes and analyses the idea of
replacing professional
mobile radio for airport ground handlers by
VoIP systems based on
WLAN. The proposed communication scheme is
adjusted to business
processes at airports. It provides push-to-talk
unicast and group
messages (determined by business tasks or location)
with priorities,
encrypted transmission, and mailboxes. The resulting
architecture and
proof-of-concept prototype consists of a server and
software clients
reusing already installed hardware and WLAN
infrastructure, and uses
peer-to-peer RDP voice streams. Bandwidth
considerations estimate a
maximum of 72 concurrent streams per access
point on WLAN for IEEE
802.11g (54 Mbit/s) and 13 streams for IEEE
802.11b (11 Mbit/s),
enhanced with a factor 3 to 5 if IEEE 802.11e is
used as quality of
service support.
Arne Bosien, Marcus Venzke and Volker Turau. A rewritable RFID environment for AGV navigation. In Proceedings of the 5th International Workshop on
Intelligent Transportation (WIT'08), March 2008, pp. 87–92. Hamburg, Germany.
@InProceedings{Telematik_BVT_2008_AVG_RFID_Environment,
author = {Arne Bosien and Marcus Venzke and Volker Turau},
title = {A rewritable RFID environment for AGV navigation},
booktitle = {Proceedings of the 5th International Workshop on
Intelligent Transportation (WIT'08)},
pages = {87-92},
day = {18-19},
month = mar,
year = 2008,
location = {Hamburg, Germany},
}
Abstract:
The paper analyses potentials, challenges, and
applications of using
rewritable, stationary RFID tags for marking
routes for autonomous
vehicles in manufacturing environments. This
approach promises to be
flexible, robust, and inexpensive. Two
algorithms are proposed also
considering additional sensors.
Steffen Loth, Marcus Venzke, Dietmar Möller, Axel Husfeldt, Volker Turau and Christoph Meier. Car Management on Aprons (CARMA) - Developing
Integrated Solutions for Vehicle Management at Mid-Size Airports. In Proceedings of the First International Workshop on
Aircraft System Technologies (AST'07), March 2007, pp. 257–266. Hamburg, Germany.
@InProceedings{Telematik_LVMHTM_2007_CARMA,
author = {Steffen Loth and Marcus Venzke and Dietmar Möller and Axel Husfeldt and Volker Turau and Christoph Meier},
title = {Car Management on Aprons (CARMA) - Developing
Integrated Solutions for Vehicle Management at Mid-Size Airports},
booktitle = {Proceedings of the First International Workshop on
Aircraft System Technologies (AST'07)},
pages = {257-266},
day = {29-30},
month = mar,
year = 2007,
location = {Hamburg, Germany},
}
Abstract:
The paper investigates the development of systems for
vehicle management on airport aprons, using current A-SMGCS
experiences, with a focus on fleet management and turn around
processes of mid-size airports. An architecture is proposed that is
derived from A-SMGCS, reducing cost by only supporting cooperative
targets and off-the-shelf hardware. Available candidate technologies
for implementing the architecture_s components are discussed,
pointing out criteria for selection. Systems for vehicle management
on aprons are important, because the continuous reductions of
aircraft turn-around times increase the pressure on airports and
ground handling companies to optimize infrastructure and resources.
Volker Turau, Matthias Witt and Marcus Venzke. Field Trials with Wireless Sensor Networks: Issues and
Remedies. In Proceedings of the Second International Conference
on Wireless and Mobile Communications (ICWMC'06), July 2006, pp. 86. Bucharest, Romania.
@InProceedings{Telematik_TWV_2006_FieldTrialsWSN,
author = {Volker Turau and Matthias Witt and Marcus Venzke},
title = {Field Trials with Wireless Sensor Networks: Issues and
Remedies},
booktitle = {Proceedings of the Second International Conference
on Wireless and Mobile Communications (ICWMC'06)},
pages = 86,
day = {29-31},
month = jul,
year = 2006,
location = {Bucharest, Romania},
}
Abstract:
Extensive field trials are essential to evaluate
protocols and algorithms for wireless sensor networks. The high costs
of such trials demand for a systematic approach. This paper discusses
the issues of setting up a field trial such as packaging, logging,
and deployment. Details about a concrete field trial to evaluate a
topology discovery algorithm are presented.
Marcus Venzke, Peng Kong and Volker Turau. A Generic Java Interface for Vertical Integration of
Wireless Sensor Networks. In Proceedings of the Fourth Workshop on Intelligent
Solutions in Embedded Systems
(WISES'06), June 2006. Vienna, Austria.
@InProceedings{Telematik_VKT_2006_VerticalIntegrationSensorNet,
author = {Marcus Venzke and Peng Kong and Volker Turau},
title = {A Generic Java Interface for Vertical Integration of
Wireless Sensor Networks},
booktitle = {Proceedings of the Fourth Workshop on Intelligent
Solutions in Embedded Systems
(WISES'06)},
day = {30},
month = jun,
year = 2006,
location = {Vienna, Austria},
}
Abstract:
The paper presents a generic, high-level Java
interface for the vertical integration of wireless sensor networks.
The intuitive interfaces are implemented in a framework that is easy
to use. The classes of the framework can be extended to meet the
requirements of a wide range of applications. In particular, the
framework supports sending packets to and receiving packets from
nodes of the sensor network. Packet types are represented as Java
classes generated from meta-data based on XML Schema. This approach
fosters short development cycles and provides the productivity needed
in vertical integration applications. The ScatterWeb platform is used
as a sample platform for sensor networks.
Volker Turau, Christian Renner, Marcus Venzke, Sebastian Waschik, Christoph Weyer and Matthias Witt. The Heathland Experiment: Results And Experiences. In Proceedings of the Workshop on Real-World Wireless
Sensor Networks (REALWSN'05), June 2005. Stockholm, Sweden.
@InProceedings{Telematik_TRVWWW_2005_Heathland,
author = {Volker Turau and Christian Renner and Marcus Venzke and Sebastian Waschik and Christoph Weyer and Matthias Witt},
title = {The Heathland Experiment: Results And Experiences},
booktitle = {Proceedings of the Workshop on Real-World Wireless
Sensor Networks (REALWSN'05)},
day = {20-21},
month = jun,
year = 2005,
location = {Stockholm, Sweden},
}
Abstract:
This paper reports on the experience gained during a
real-world
deployment of a sensor network based on the ESB platform in
the
heathlands of Northern Germany. The goal of the experiment was to
gain a deeper insight into the problems of real deployments as
opposed to simulated networks. The focus of this report is on the
quality of radio links and the influence of the link quality on
multi-hop routing.
Volker Turau, Dietrich Fahrenholtz and Marcus Venzke. Online Assessment for University Admission: Goals,
Problems, and Experience. In Proceedings of the 9th International Computer
Assisted Assessment Conference (CAA'05), June 2005, pp. 457–467. Loughborough, UK.
@InProceedings{Telematik_TFV_2005_OnlineAssessment,
author = {Volker Turau and Dietrich Fahrenholtz and Marcus Venzke},
title = {Online Assessment for University Admission: Goals,
Problems, and Experience},
booktitle = {Proceedings of the 9th International Computer
Assisted Assessment Conference (CAA'05)},
pages = {457-467},
day = {5-6},
month = jun,
year = 2005,
location = {Loughborough, UK},
}
Abstract:
This paper reports on the experience gained during
the implementation and
operation of an online assessment system for
recruitment of
engineering and computer science students. We
identified problems
that have to be solved to make online assessment a
worthwhile
building block of university admission. The presented work
includes
techniques for evaluating and monitoring online assessment
processes.
Marcus Venzke, Christoph Weyer and Volker Turau. Application Specific vs. Standard Web Service
Interfaces for the Vertical Integration of Fieldbus Systems. In Proceedings of the Third Workshop on Intelligent
Solutions in Embedded Systems (WISES'05), May 2005, pp. 153–162. Hamburg, Germany.
@InProceedings{Telematik_VWT_2005_WebService,
author = {Marcus Venzke and Christoph Weyer and Volker Turau},
title = {Application Specific vs. Standard Web Service
Interfaces for the Vertical Integration of Fieldbus Systems},
booktitle = {Proceedings of the Third Workshop on Intelligent
Solutions in Embedded Systems (WISES'05)},
pages = {153-162},
day = {20},
month = may,
year = 2005,
location = {Hamburg, Germany},
}
Abstract:
The paper compares two approaches for developing Web
service interfaces
for the vertical integration of TTP/A fieldbus
systems. High-level
abstractions are provided by application specific
interfaces,
generated from metadata describing fieldbus systems. In
contrast
standardised interfaces such as OPC XML DA only allow lower
levels of
abstractions. But these enable accessing the fieldbus system
from a
broad range of standard clients, while high-level abstractions
reflecting the application programmer's view on the system facilitate
the development of more specific clients and workflows.
Marcus Venzke. Specifications using XQuery Expressions on Traces. In Proceedings of the First International Workshop on
Web Services and Formal Methods (WS-FM'04), December 2004. Pisa, Italy. Published in: Electronic Notes in Theoretical Computer
Science, Volume 105, p. 109-118, 10 December 2004.
@InProceedings{Telematik_Venzke_2004_Specifications,
author = {Marcus Venzke},
editor = {Mario Bravetti and Gianluigi Zavattaro},
title = {Specifications using XQuery Expressions on Traces},
booktitle = {Proceedings of the First International Workshop on
Web Services and Formal Methods (WS-FM'04)},
month = dec,
year = 2004,
location = {Pisa, Italy},
note = {Published in: Electronic Notes in Theoretical Computer
Science, Volume 105, p. 109-118, 10 December 2004},
}
Abstract:
This paper contributes to the interoperability of web
services by proposing the flexible specification technique SXQT in
conjunction with the automatic validation, a straightforward approach
for detecting non-conformance. SXQT allows different levels of
abstraction by specifying individual requirements on a web service's
protocol, i.e. its SOAP messages and behaviour including SOAP
modules. The automatic validation detects non-conformance by
comparing occurring message sequences with the protocol's
specification.
Volker Turau, Marcus Venzke, Christoph Weyer and Yesenia Vigil. Vertical Integration of TTP/A Fielbus Systems Using Web
Services. In Proceedings of the First International Conference
on Informatics in Control, Automation and Robotics (ICINCO'04), August 2004, pp. 390–393. Setubal, Portugal.
@InProceedings{Telematik_TVW_2004_VerticalIntegration,
author = {Volker Turau and Marcus Venzke and Christoph Weyer and Yesenia Vigil},
title = {Vertical Integration of TTP/A Fielbus Systems Using Web
Services},
booktitle = {Proceedings of the First International Conference
on Informatics in Control, Automation and Robotics (ICINCO'04)},
pages = {390-393},
month = aug,
year = 2004,
location = {Setubal, Portugal},
}
Abstract:
This paper presents a generic technique to expose
data and control of
fieldbus systems to applications located at the
level of operational
management. To provide a high degree of
interoperability between the
operational level and different fieldbus
systems we utilize
standardized techniques such as XML, HTTP, and Web
services which can
be deployed independently of the platform. The
proposed service is
based on the interface file system for TTP/A smart
transducers. The
defined interface provides high level abstractions
appropriate for
the integration into business applications and
considers the latency
introduced by the internet protocols.
Volker Turau, Marcus Venzke and Christoph Weyer. A Web Service for TTP/A Fieldbus Systems based on
Meta-Data. In Proceedings of the Second Workshop on Intelligent
Solutions in Embedded Systems (WISES'04), June 2004, pp. 159–168. Graz, Austria.
@InProceedings{Telematik_TVW_2004_MetaData,
author = {Volker Turau and Marcus Venzke and Christoph Weyer},
title = {A Web Service for TTP/A Fieldbus Systems based on
Meta-Data},
booktitle = {Proceedings of the Second Workshop on Intelligent
Solutions in Embedded Systems (WISES'04)},
pages = {159-168},
month = jun,
year = 2004,
location = {Graz, Austria},
}
Abstract:
This paper is concerned with the vertical integration
of fieldbus
systems. It presents a generic technique to expose data
and control
of fieldbus systems in a semantically rich way to
applications
located at the level of operational management. To
provide a high
degree of interoperability between the operational
level and
different fieldbus systems we utilize standardized
techniques such as
XML, HTTP, and Web services which can be deployed
independently of
the platform. The proposed service is based on the
interface file
system for TTP/A smart transducers. The defined
interface provides
high level abstractions appropriate for the
integration into business
applications and considers the latency
introduced by the internet
protocols. The operations of the service
are automatically generated
from meta-data descriptions of the smart
transducers and their
combination into larger clusters.
Marcus Venzke. Automatic Validation of Web Services. In Proceedings of the 8th CaberNet Radicals Workshop, October 2003. Ajaccio, Corsica.
@InProceedings{Telematik_Venzke_2003_Validation,
author = {Marcus Venzke},
editor = {Witold Abramowicz},
title = {Automatic Validation of Web Services},
booktitle = {Proceedings of the 8th CaberNet Radicals Workshop},
day = {5-8},
month = oct,
year = 2003,
location = {Ajaccio, Corsica},
}
Marcus Venzke and Stefan Pitzek. Accessing Fieldbus Systems via Web Services. In Proceedings of the First Workshop on Intelligent
Solutions in Embedded Systems (WISES'03), June 2003. Vienna, Austria.
@InProceedings{Telematik_VP_2003_WebServices,
author = {Marcus Venzke and Stefan Pitzek},
title = {Accessing Fieldbus Systems via Web Services},
booktitle = {Proceedings of the First Workshop on Intelligent
Solutions in Embedded Systems (WISES'03)},
day = {27},
month = jun,
year = 2003,
location = {Vienna, Austria},
}
PhD Theses
Marcus Venzke. Spezifikation von interoperablen Webservices mit XQuery. PhD Thesis, Hamburg University of Technology, Hamburg, Germany, December 2003.
@PhdThesis{Telematik_Venzke_2003_Spezifikation,
author = {Marcus Venzke},
title = {Spezifikation von interoperablen Webservices mit XQuery},
school = {Hamburg University of Technology},
address = {Hamburg, Germany},
month = dec,
year = 2003,
}
Abstract:
The thesis solves interoperability issues regarding
Web Services. The W3C standard for the specification of their
interfaces (WSDL) is made more precise. This is done by developing a
specification technique (SXQT), that allows specifying interfaces
using expressions of first order logic (in XQuery). Compliance with
such specifications is checked with the automatic validation.
Technical Reports
Jürgen Jessen, Marcus Venzke and Volker Turau. Smart Energy Module for Wireless Sensor Nodes. In Proceedings of the 9th GI/ITG KuVS Fachgespräch
"Drahtlose Sensornetze" (FGSN'10), September 2010, pp. 9–12. Würzburg, Germany.
@InProceedings{Telematik_JVT_SmartEnergyModule,
author = {Jürgen Jessen and Marcus Venzke and Volker Turau},
title = {Smart Energy Module for Wireless Sensor Nodes},
booktitle = {Proceedings of the 9th GI/ITG KuVS Fachgespräch
"Drahtlose Sensornetze" (FGSN'10)},
pages = {9-12},
day = {16-17},
month = sep,
year = 2010,
location = {Würzburg, Germany},
}
Abstract:
This paper presents the design of a universal energy
module for wireless
sensor nodes, which supports a wide range of
energy harvesters and
energy storages. The focus is on the efficient
conversion and storage
of energy and to provide hardware support for
higher level management
functions. The module facilitates maximum
power point tracking to
improve the harvester efficiency. By
supporting hybrid harvesters,
the module can make better use of the
time-dependent availability of
environmental energy sources.
Lars Niemann, Marcus Venzke, Christian Renner and Volker Turau. Clock Synchronization of TinyOS-based Sensor Networks
with DCF77. In Proceedings of the 8th GI/ITG KuVS Fachgespräch
"Drahtlose Sensornetze" (FGSN'09), August 2009, pp. 45–46. Hamburg, Germany.
@InProceedings{Telematik_NVRT_2009_DCF77,
author = {Lars Niemann and Marcus Venzke and Christian Renner and Volker Turau},
title = {Clock Synchronization of TinyOS-based Sensor Networks
with DCF77},
booktitle = {Proceedings of the 8th GI/ITG KuVS Fachgespräch
"Drahtlose Sensornetze" (FGSN'09)},
pages = {45-46},
day = {13-14},
month = aug,
year = 2009,
location = {Hamburg, Germany},
}
Abstract:
The paper presents an approach of applying DCF77 time
radio signals to
provide a clock with global time in sensor
networks
based on TinyOS. Some nodes containing DCF77 receiver hardware
reliably decode time signals even if these are
distorted to some
extent. The clock with global time is provided by
compensating clock
drift. Time is distributed in
the network with a protocol generating
timestamps on the MAC layer.