Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Josef Schalk"'
Publikováno v:
Electronic Journal of Structural Engineering, Iss 01 (2009)
Many Media Access Control (MAC) protocols for Wireless Sensor Networks (WSN) use varia-tions of the popular Carrier Sense Multiple Access (CSMA) protocol due to its simplicity and its high perfor-mance in low traffic scenarios. However, CSMA does not
Externí odkaz:
https://doaj.org/article/0a9766e4b34c4e65a66d519f397ea90b
Autor:
Th. Becker, Josef Schalk, Ulrich Hilleringmann, T. Otterpohl, C. Paget, Martin Kluge, K. Tiplady
Publikováno v:
IEEE Sensors Journal. 9:1589-1595
The current trend towards the use of novel materials and design concepts for aircraft structures may demand structural health monitoring (SHM) systems in the future. Wireless sensor networks (WSNs) could fulfill the required monitoring tasks concerni
Autor:
Josef Schalk, Wilhelm Ficker, Helmut Seidel, U. Prechtel, Karin Bauer, M. Aikele, F. Neubauer
Publikováno v:
Sensors and Actuators A: Physical. 92:161-167
A new resonant accelerometer is presented consisting of a doubly clamped beam coupled to a seismic mass. The beam is thermally excited by an implanted resistor and its vibration is sensed piezoresistively. An acceleration which deflects the seismic m
Autor:
Josef Schalk, Stefan Sassen, Ralf Voss, Matthias Rose, Erwin Stenzel, Winfried Kupke, R. Gruenberger, T. Gleissner, Wilhelm Ficker, F. Neubauer, Karin Bauer
Publikováno v:
Sensors and Actuators A: Physical. 83:80-84
This paper reports on a silicon angular rate sensor designed for automotive applications like overroll protection and electronic skidding protection. The sensor is based on a tuning fork principle with the tines being piezoelectrically excitated perp
Autor:
N. Schmitt, D. Marinos, T. Pistner, C. Vassilopoulos, Josef Schalk, Jirka Klaue, Pavlos Kouros, C. J. Aidinis
Publikováno v:
2010 International Symposium on Information Technology.
One of the major tasks in the future of aircraft inflight entertainment is to provide wireless connectivity throughout the cabin. In this work an optical OFDM modulation scheme for cellular network architecture is investigated in comparison to other
Publikováno v:
IEEE 5th International Symposium on Wireless Pervasive Computing 2010.
The state of development of optical devices has led to increased interest in high data rate wireless optical communication schemes that today constitute a viable alternative to conventional wireless technologies for information exchange. In this work
Publikováno v:
2008 IEEE Sensors.
In modern aeronautics and aerospace industry there is a great demand for wireless sensors in order to improve efficiency, reliability and to reduce the costs. They are the key enablers for improved system concepts like e.g. condition based maintenanc
Publikováno v:
2008 IEEE Sensors.
Energy harvesting for wireless sensors and sensor networks becomes more and more popular in recent years. Many different energy scavengers have been discussed; however their deployment depends strongly on the environmental conditions. This paper desc
Publikováno v:
SPIE Proceedings.
This paper describes asynchronous MAC (Medium Access Control) strategies based on the IEEE 802.15.4 physical layer for wireless aeronautical applications where low power and low latency are important requirements as well as security and data integrit
Publikováno v:
Architecting Dependable Systems IV ISBN: 9783540740339
The trend for more flexible communication architectures, in particular for safety critical aeronautic applications, reflects the growing need for an optimized design approach. Customer requirements for additional functionality and changes caused by u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::657ca87eeb622f59694dbadd2f2fb10b
https://doi.org/10.1007/978-3-540-74035-3_14
https://doi.org/10.1007/978-3-540-74035-3_14