opensensor overview - Mobile Devices

3/11/2008

opensensor - information material version 1.0

Aalborg University, Mobile Device Group

opensensor Part 1 opensensor motivation Frank H.P. Fitzek Anders Grauballe Gian Paolo Perrucci Ben Kroeger

Stephan Rein Technical University of Berlin

Aalborg University

overview opensensor - information material


• Wireless Sensor Networks

Fitzek/Rein/Grauballe/Perrucci/Kroeger

Aalborg University and Technical University of Berlin

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wireless sensor networks opensensor - information material


• 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 Fitzek/Rein/Grauballe/Perrucci/Kroeger




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



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• 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

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• Literature for WSN Protocols and Architectures for Wireless Sensor Networks Holger Karl, Andreas Willig ISBN: 978-0-470-09510-2 Hardcover 526 pages April 2005 Fitzek/Rein/Grauballe/Perrucci/Kroeger


wsn and mobile phones opensensor - information material


• 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 Fitzek/Rein/Grauballe/Perrucci/Kroeger


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• 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 opensensor - information material




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gateway approach opensensor - information material


• Python implementation • Some screenshots • • • •

ACTION = {DISPLAY, SPEECH, SMS, MMS, ALARM} BODY = {any} KEYVALUE = {any} SMSHello World!+123



example opensensor - information material


• Sensor placement at car • Park situation • Communication architecture



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• 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



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integrated sensors opensensor - information material


• 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 opensensor - information material


• 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.



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• 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 Fitzek/Rein/Grauballe/Perrucci/Kroeger




• 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 Fitzek/Rein/Grauballe/Perrucci/Kroeger


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contact opensensor - information material


Frank H.P. Fitzek Anders Grauballe Gian Paolo Perrucci Ben Kroeger

Stephan Rein Technical University of Berlin

Aalborg University

[email protected] http://mobiledevices.kom.aau.dk/opensensor/



publication opensensor - information material

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



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