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Dr Alex Weddell

Academic Staff

Alex Weddell was awarded his MEng degree by the University of Southampton in 2005 and studied for his PhD (awarded in 2010), entitled 'A Comprehensive Scheme for Reconfigurable Energy-Aware Wireless Sensor Nodes', at the same institution. He contributed to the Data Information Fusion Defence Technology Centre (DIF DTC) 'Adaptive Energy-Aware Sensor Networks' project and worked under the EPSRC platform grant 'New Directions for Intelligent Sensors'. He has experience with a range of energy harvesting devices and has developed a platform which supports a mix of energy sources to power an energy-aware wireless sensor node. He worked on the 'Next Generation Energy-Harvesting Electronics: Holistic Approach' project, looking at energy device modelling and system-level design approaches. He was appointed as a lecturer in February 2013.

Research

Professional

Qualifications

PhD Electronic & Electrical Engineering (Southampton), 2010
MEng Electronic Engineering (Southampton), 2005

Professional activities

IEEE Student Branch Chairman - 2007-2008
IEEE Student Branch Secretary - 2006-2007
IEEE Student Branch Publicity Rep - 2006

Conferences attended

ICALT 2013 - International Conference on Advanced Logistics and Transport, 29-31 May 2013, Sousse, Tunisia.
PowerMEMS 2012 - The 12th International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, 2-5 December 2012, Atlanta, USA.
S2K 2012 - Micro and Nanofabrication for Energy Harvesting Applications Workshop (invited speaker), 19 June 2012, Southampton, UK.
DATE 2011 - Design, Automation and Test in Europe, 14-18 March 2011, Grenoble, France.
Energy Harvesting for Wireless Automation, 24-25 March 2010, Munich, Germany.
Technology World 2009, 23-24 November 2009, Coventry, UK.
IEEE SECON 2009 - Sensor, Mesh and Ad Hoc Communications and Networks, 22-26 June 2009, Rome, Italy.
Wireless VITAE 2009 - Wireless Communication, Vehicular Technology, Information Theory and Aerospace & Electronic Systems Technology, 17-20 May 2009, Aalborg, Denmark.
DIF DTC Final Conference, 24-25 March 2009, Shrivenham, UK.
Eurosensors 2008, 7-10 September 2008, Dresden, Germany.
ESTC 2008 - Electronics System-Integration Technology Conference, 1-4 September 2008, Greenwich, UK.
IEEE I2MTC 2008 - International Instrumentation and Measurement Technology Conference, 12-15 May 2008, Victoria, Canada.
Fraunhofer Symposium on Micro-Energy Technology, 10 October 2006, Berlin, Germany.

Duties

Senior Admissions Tutor for Electronics
Leader of Pt II Labs (Electronics and EEE)
EEE Lab Manager

Publications

Merrett, Geoff V., Weddell, Alex S., Harris, Nick R., White, Neil M. and Al-Hashimi, Bashir M. (2006) The Unified Framework for Sensor Networks: A Systems Approach. , University of Southampton

Weddell, Alexander S., Merrett, Geoff V., Harris, Nick R. and Al-Hashimi, Bashir M. (2008) Energy Harvesting and Management for Wireless Autonomous Sensors. Measurement + Control, 41, (4), 104-108.

Weddell, Alex S., Harris, Nick R. and White, Neil M. (2008) Alternative Energy Sources for Sensor Nodes: Rationalized Design for Long-Term Deployment. At International Instrumentation and Measurement Technology Conference, Victoria, British Columbia, Canada, 12 - 15 May 2008. IEEE, 1370-1375.

Maunder, R. G., Weddell, A. S., Merrett, G. V., Al-Hashimi, B. M. and Hanzo, L. (2008) Iterative Decoding for Redistributing Energy Consumption in Wireless Sensor Networks. In, International Conference on Computer Communications and Networks, St. Thomas, U.S. Virgin Islands, 03 - 07 Aug 2008. IEEE.

Merrett, Geoff V., Weddell, Alexander S., Lewis, Adam P., Harris, Nick R., Al-Hashimi, Bashir M. and White, Neil M. (2008) An Empirical Energy Model for Supercapacitor Powered Wireless Sensor Nodes. In, 17th International IEEE Conference on Computer Communications and Networks, St Thomas, Virgin Islands (), USA, 03 - 07 Aug 2008. IEEE.

Merrett, Geoff V, Weddell, Alex S., Harris, Nick R, Al-Hashimi, Bashir M and White, Neil M (2008) A Structured Hardware/Software Architecture for Embedded Sensor Nodes. In, 17th International Conference on Computer Communications and Networks, St Thomas, Virgin Islands (), USA, 03 - 07 Aug 2008.

Merrett, Geoff V., Weddell, Alex S., Berti, Luca, Harris, Nick R., White, Neil M. and Al-Hashimi, Bashir M. (2008) A Wireless Sensor Network for Cleanroom Monitoring. In, Eurosensors 2008, Dresden, Germany, 07 - 11 Sep 2008. VDI, 1553-1556.

Weddell, A.S., Harris, N.R. and White, N.M. (2008) An efficient indoor photovoltaic power harvesting system for energy-aware wireless sensor nodes. At Eurosensors 2008, Dresden, DE, 07 - 11 Sep 2008. 4pp.

Weddell, Alex, Grabham, Neil, Harris, Nick and White, Neil (2008) Energy-Harvesting Sensor Nodes. At Wireless Sensing Demonstrator Showcase, NPL,

Weddell, Alex S., Merrett, Geoff V., Harris, Nick R. and White, Neil M. (2009) Energy Devices for Sensor Networks: Properties for Simulation and Deployment. In, Wireless Communications, Vehicular Technology, Information Theory and Aerospace & Electronic Systems Technology (Wireless VITAE); Special Session: Energy-Harvesting Wireless Sensor Networks, Aalborg, Denmark, 17 - 20 May 2009. IEEE, 26-30.

Weddell, A. S., Teacy, W. T. L., Grabham, N. J., Merrett, G. V., Harris, N. R., Rogers, A., White, N. M. and Jennings, N. R. (2009) Plug-and-Play Power Resources and Agent-Based Coordination for Energy-Aware Wireless Sensor Nodes. In, WiSIG Wireless Sensing Showcase 2009, National Physical Laboratory, Teddington, UK,

Merrett, Geoff, Weddell, Alex and Harris, Nick (2010) Wireless Devices and Sensor Networks. In, Beeby, Steve and White, Neil (eds.) Energy Harvesting for Autonomous Systems. , Artech House, 7-44.

Wang, Leran, Kazmierski, Tom, Al-Hashimi, Bashir, Weddell, Alex, Merrett, Geoff and Ayala Garcia, Ivo (2011) Accelerated simulation of tunable vibration energy harvesting systems using a linearised state-space technique. In, Design, Test and Automation in Europe (DATE 2011), Grenoble, France, 14 - 18 Mar 2011.

Weddell, Alex, Merrett, Geoff and Al-Hashimi, Bashir (2011) Ultra low-power photovoltaic MPPT technique for indoor and outdoor wireless sensor nodes. At Design, Automation and Test in Europe (DATE), Grenoble, France, 14 - 18 Mar 2011. 4pp.

Weddell, Alex, Merrett, Geoff V., Kazmierski, Tom and Al-Hashimi, Bashir (2011) Accurate supercapacitor modeling for energy-harvesting wireless sensor nodes. IEEE Transactions on Circuits and Systems II: Express Briefs, 58, (12), 911-915. (doi:10.1109/TCSII.2011.2172712).

Weddell, Alex S., Merrett, Geoff V. and Al-Hashimi, Bashir M. (2011) Photovoltaic sample-and-hold circuit enabling MPPT indoors for low-power systems. IEEE Transactions on Circuits and Systems I: Regular Papers, 59, (6), 1196-1204. (doi:10.1109/TCSI.2011.2173393).

Weddell, Alexander Stewart (2010) A comprehensive scheme for reconfigurable energy-aware wireless sensor nodes. University of Southampton, School of Electronics and Computer Science, Doctoral Thesis , 229pp.

Kazmierski, Tom, Merrett, Geoff V., Wang, Leran, Al-Hashimi, Bashir, Weddell, Alex and Ayala Garcia, Ivo (2012) Modeling of Wireless Sensor Nodes Powered by Tunable Energy Harvesters: HDL-Based Approach. IEEE Sensors Journal, 12, (8), 2680-2689. (doi:10.1109/JSEN.2012.2196037).

Merrett, Geoff V. and Weddell, Alex S. (2012) Supercapacitor leakage in energy-harvesting sensor nodes: fact or fiction? In, International Workshop Algorithms and Concepts for Networked Sensing Systems Powered by Energy Harvesters 2012 (EnHaNSS'12), Antwerp, BE, 11 Jun 2012. 5pp.

Weddell, Alex S., Merrett, Geoff V., Barrow, Stuart and Al-Hashimi, Bashir M. (2012) Vibration-powered sensing system for engine condition monitoring. In, IET Wireless Sensor Systems 2012, London, GB, 18 - 19 Jun 2012. Institution of Engineering and Technology5pp.

Weddell, Alex S., Zhu, Dibin, Merrett, Geoff V., Beeby, S.P. and Al-Hashimi, B.M. (2012) A practical self-powered sensor system with a tunable vibration energy harvester. In, PowerMEMS 2012, Atlanta, US, 02 - 05 Dec 2012. 4pp.

Weddell, Alexander S., Magno, Michele, Merrett, Geoff V., Brunelli, Davide, Al-Hashimi, Bashir and Benini, Luca (2013) A Survey of Multi-Source Energy Harvesting Systems. In, Design, Automation and Test in Europe (DATE), Grenoble, France, 18 - 22 Mar 2013. 4pp. (doi:10.7873/DATE.2013.190).

Beeby, S.P., Wang, Leran, Zhu, Dibin, Weddell, Alex, Merrett, Geoff V., Stark, Bernard, Szarka, Gyorgy and Al-Hashimi, Bashir M. (2013) A comparison of power output from linear and non-linear kinetic energy harvesters using real vibration data. Smart Materials and Structures, 22, (7), 075022. (doi:10.1088/0964-1726/22/7/075022).

Weddell, Alex S., Zhu, Dibin, Merrett, Geoff V., Beeby, Stephen P. and Al-Hashimi, Bashir M. (2013) Tunable vibration energy harvester. In, 1st International Workshop on Energy Neutral Sensing Systems (ENSsys 2013), Rome, IT, 14 Nov 2013. (doi:10.1145/2534208.2534226).

Lau, Sei Ping, Merrett, Geoff V., Weddell, Alex S. and White, Neil M. (2014) StreetlightSim: a simulation environment to evaluate networked and adaptive street lighting. In, IEEE Asia Pacific Conference on Wireless and Mobile Technologies 2014, Bali, ID, 28 - 30 Aug 2014. 6pp.

Lau, Sei Ping, Weddell, Alex S., Merrett, Geoff V. and White, NM (2014) Energy-neutral solar-powered street lighting with predictive and adaptive behaviour. In, 2nd International Workshop on Energy Neutral Sensing Systems (ENSsys 2014), Memphis, US, 06 Nov 2014. New York, US, ACM, 13-18. (doi:10.1145/2675683.2675690).

Balsamo, Domenico, Weddell, Alex, Merrett, Geoff V., Al-Hashimi, Bashir M., Brunelli, Davide and Benini, Luca (2014) Hibernus: Sustaining Computation during Intermittent Supply for Energy-Harvesting Systems. IEEE Embedded Systems Letters

Lau, Sei Ping, Merrett, Geoff V., Weddell, Alex S. and White, Neil M. (2015) A Traffic-Aware Street Lighting Scheme for Smart Cities using Autonomous Networked Sensors. Computers & Electrical Engineering

Tinsley, Nick F., Witts, Stuart T., Ansell, Jacob M. R., Barnes, Emily, Jenkins, Simeon M., Raveendran, Dhanushan, Merrett, Geoff V. and Weddell, Alex S. (2015) Poster Abstract: Enspect—Simplifying the Design of Energy Harvesting Systems. At 13th ACM Conference on Embedded Networked Sensor Systems (SenSys 2015), Korea, Republic of, KR, 01 - 04 Nov 2015. ACM2pp. (doi:10.1145/2809695.2817887).

Lau, Sei Ping, Weddell, Alex S., White, Neil M. and Merrett, Geoff V. (2015) Poster Abstract: Solar-Powered Adaptive Street Lighting Evaluated with Real Traffic and Sunlight Data. At 13th ACM Conference on Embedded Networked Sensor Systems (SenSys 2015), Korea, Republic of, KR, 01 - 04 Nov 2015. ACM2pp. (doi:10.1145/2809695.2817886).

Tinsley, Nick F., Witts, Stuart T., Ansell, Jacob M. R., Barnes, Emily, Jenkins, Simeon M., Raveendran, Dhanushan, Merrett, Geoff V. and Weddell, Alex S. (2015) Enspect: a Complete Tool using Modeling and Real Data to Assist the Design of Energy Harvesting Systems. In, 3rd International Workshop on Energy Neutral Sensing Systems (ENSsys 2015), Seoul, KR, ACM6pp. (doi:10.1145/2820645.2820648).

Savanth, Anand, Weddell, Alex, Myers, James, Flynn, David and Al-Hashimi, Bashir (2015) Photovoltaic cells for micro-scale wireless sensor nodes: measurement and modeling to assist system design. In, 3rd International Workshop on Energy Neutral Sensing Systems (ENSsys 2015), Seoul, KR, ACM6pp. (doi:10.1145/2820645.2820653).

Lidtke, Aleksander A., Rumpf, Clemens, Tatnall, Adrian, Lewis, Hugh G., Walker, Scott J., Taylor, Mia, Fear, Robert C., Weddell, Alex S., Maunder, Robert G. and Bantock, James R.B. (2015) Enhancing spaceflight safety with UOS3 cubesat. In, 1st Symposium on Space Educational Activities , Padova, Italy, 09 - 12 Dec 2015. European Space Agency.

Balsamo, Domenico, Das, Anup, Weddell, Alex, Brunelli, Davide, Al-Hashimi, Bashir M., Merrett, Geoff V. and Benini, Luca (2016) Graceful Performance Modulation for Power-Neutral Transient Computing Systems. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems

Balsamo , Domenico, Das, Anup, Weddell, Alex, Brunelli , Davide, Al-Hashimi, Bashir M., Merrett, Geoff V. and Benini, Luca (2016) Dataset supporting the article entitled “Graceful performance modulation for power neutral transient computing systems". doi:10.5258/SOTON/386876 [dataset]

Balsamo , Domenico, Weddell, Alex, Das, Anup, Rodriguez Arreola , Alberto, Brunelli , Davide, Al-Hashimi, Bashir M., Merrett, Geoff V. and Benini, Luca (2016) Data-set supporting the article entitled "Hibernus++: A Self-calibrating and Adaptive System for Transiently-Powered Embedded Devices". doi:10.5258/SOTON/389749 [dataset]

Balsamo, Domenico, Weddell, Alex S., Das, Anup, Rodriguez Arreola, Alberto, Brunelli, Davide, Al-Hashimi, Bashir M., Merrett, Geoff V. and Benini, Luca (2016) Hibernus++: a self-calibrating and adaptive system for transiently-powered embedded devices. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 1-13. (doi:10.1109/TCAD.2016.2547919).

Rumpf, Clemens, Lidtke, Aleksander, Weddell, Alex and Maunder, Rob (2016) Enhancing microelectronics education with large-scale student projects. In, 11th IEEE European Workshop on Microelectronics Education, Southampton, GB, 11 - 13 May 2016. IEEE6pp.

Rodriguez Arreola, Alberto, Balsamo, Domenico, Das, Anup, Weddell, Alex S., Brunelli, Davide, Al-Hashimi, Bashir and Merrett, Geoff (2015) Approaches to transient computing for energy harvesting systems - a quantitative evaluation. In, ENSsys '15 Proceedings of the 3rd International Workshop on Energy Harvesting Energy Neutral Sensing Systems, Seoul, KR, 01 - 04 Nov 2015. ACM Press, 3-8. (doi:10.1145/2820645.2820652).

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