Stephan Rottmann

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— Future requirements for drastic reduction of CO2 production and energy consumption will lead to significant changes in the way we see mobility in the years to come. However, the automotive industry has identified significant barriers to the adoption of electric vehicles, including reduced driving range and greatly increased refueling times. Automated cars(More)
We present PotatoNet, an outdoor testbed for Wireless Sensor Networks (WSNs). Its primary focus is robustness, reliability and flexibility. PotatoNet is designed to operate without on-site maintenance for extended periods of time. It can withstand heat, dust and rain and has already been tested running outside for several months.
The deployment and especially the long-term operation of outdoor Wireless Sensor Network (WSN) testbeds is still a challenging task. If different monitoring tasks with significantly varying demands have to be performed, the handling of scarce resources like energy becomes difficult and might lead to questions about the reliability of the testbed. In this(More)
—Localization is an important challenge for all applications with autonomous navigating devices. Systems like GPS solve this challenge for most outdoor applications but such systems are not able to operate indoors. Indoor localization therefore is an active research topic. When it comes to locating nodes that travel from indoors to outdoors most systems are(More)
It is a well-known fact that Wireless Sensor Networks (WSNs) that are exposed to real environmental conditions suffer from harsh temperatures. Yet, the temperature does not only have negative impact as the energy efficiency of processing units benefits from higher temperatures. The minimal voltage for correct operation of CMOS circuits is bounded by the(More)