Opensensor - information material version 1.0Aalborg University, Mobile Device Group opensensor Part 1 opensensor motivation Frank H.P. Fitzek Anders Grauballe

opensensor - information material version 1.0 Aalborg University, Mobile Device Group

opensensor Part 1

opensensor motivation

Frank H.P. FitzekAnders GrauballeGian Paolo PerrucciBen Kroeger Aalborg University

Stephan ReinTechnical University of Berlin

opensensor - information material Aalborg University, Mobile Device Group

Fitzek/Rein/Grauballe/Perrucci/Kroeger Aalborg University and Technical University of Berlin

overview

• Wireless Sensor Networks



wireless sensor networks

• Wireless sensor networks (WSN) are currently an interesting research area

• The term sensor describes a battery driven small electronic system with wireless communication capabilities and the sensoric part (e.g. temperature, light, and many others)

• WSN consists out of many, sometime even thousands of sensors




• Field of application for WSN– Military (main source)– Intelligent households– Environmental scenarios– In-Car communication– Gaming– Health Care




• Research areas for WSN– Routing – Protocol design– Communication architectures– Energy efficient operations– Security– Information storage




• Pure WSN • Hierarchical WSN

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Cluster Head




• Literature for WSNProtocols and Architectures for

Wireless Sensor Networks

Holger Karl, Andreas Willig

ISBN: 978-0-470-09510-2

Hardcover

526 pages

April 2005



wsn and mobile phones

• One problem o WSN is the interface to users• No display due to battery constraints and

sometimes it just do not make sense to have displays.

• Information is gathered by multiple sensors so which sensor to look at

• Therefore, the optimal sink of information is the mobile phone for most WSN applications




• The convergence of mobile phones and wireless sensor networks has already started

• Integrated sensoric parts in mobile phones (accelerator, temperature, light, etc)

• External sensors connected to mobile phones



gateway approach



gateway approach

• Python implementation• Some screenshots

• ACTION = {DISPLAY, SPEECH, SMS, MMS, ALARM}

• BODY = {any}• KEYVALUE = {any}

• <ACTION>SMS<BODY>Hello World!<KEYVALUE>+123



example

• Sensor placement at car

• Park situation

• Communication architecture




• External sensors– Jogging equipment for iPod from Nike– External sensor placed in the shoe – Step counter conveys information to the iPod




• Integrated sensors– E.g. jogging equipment

from Nokia– Accelerator can be used

for other applications as well such as gaming

– Limited number of sensors



integrated sensors

• New applications for integrated sensors in mobile phones– Derive overall traffic flow for a whole city by

partial measurements of some phones (e.g. N95 with GPS)

– Weather information by retrieval of temperature of some phones.



motivation opensensor

• Integrated sensors are available with some phones already no problem

• External sensors are available too but not optimized for the communication with the mobile phone and way to expensive.

• Use open community to develop and improve the idea of opensensor.




• The main motivation to build the opensensor is to have a wireless sensor board with the following characteristica:– Low cost and easy to build/extend– Get the basic understanding of DSPs and their

programming– Build solid teaching material– Not just WSN but convergence with mobile

phones




• Furthermore the opensensor should be available for all researcher around the world– Hardware: The plans to build the opensensor are

freely available– Software: Basic functionality is offered already

and maintain in the future– Teaching: All slides are available, so that it should

be easy to integrated it into existing lectures or to build course from scratch



contact

Frank H.P. FitzekAnders GrauballeGian Paolo PerrucciBen Kroeger Aalborg University

Stephan ReinTechnical University of Berlin

[email protected]

http://mobiledevices.kom.aau.dk/opensensor/



publication

• F.H.P. Fitzek and F. Reichert. Mobile Phone Programming and its Application to Wireless Networking. 2007. Springer.

Documents

Opensensor - information material version 1.0Aalborg University, Mobile Device Group opensensor Part 1 opensensor motivation Frank H.P. Fitzek Anders Grauballe