Two Papers Accepted for Publication in IEEE Transactions26th September 2011
We have recently had two papers related to our work on Energy Harvesting electronics accepted for publication in the IEEE Transactions on Circuits and Systems. Both publications are a result of the EPSRC project on 'Holistic Energy Harvesting'.
Our paper on supercapacitor modelling
The first paper, 'Accurate Supercapacitor Modeling for Energy-Harvesting Wireless Sensor Nodes' investigates supercapacitors, often used in energy-harvesting wireless sensor nodes (EH-WSNs) to store harvested energy. Until now, research into the use of supercapacitors in EH-WSNs has considered them to be ideal or over-simplified, with non-ideal behavior attributed to substantial leakage currents. In this brief, we show that observations previously attributed to leakage are predominantly due to redistribution of charge inside the supercapacitor. We confirm this hypothesis through the development of a circuit-based model which accurately represents non-ideal behavior. The model correlates well with practical validations representing the operation of an EH-WSN, and allows behavior to be simulated over long periods..
The second paper, 'Photovoltaic Sample-and-Hold Circuit Enabling MPPT Indoors for Low-Power Systems' presents an ultra low-power maximum power point tracking (MPPT) circuit with a novel sample-and-hold and cold-start arrangement, enabling efficient indoor MPPT (which has not been reported, or considered possible, before). The circuit is validated in practice, and the sample-and-hold behaviour analysed using real light data.
For more information, click here.
Davide's App Featured in BBC Wildlife Magazine29th August 2013
Davide's New Forest Cicada app - available for both Android and iPhone platforms - has been featured in BBC Wildlife Magazine (Summer Edition) as one of the 'three things they love'.
The app uses the microphone of your smartphone to capture the sound in the surrounding environment. This sound is analysed on the phone itself to provide you with immediate feedback on whether the cicada is there or not. In both cases, if you complete a survey (by tapping on the cicada image in the detector page)... [more]
PRiME: Fully Funded PhD Studentships1st December 2014
The PRiME Project at the University of Southampton is offering 2x 3.5 year fully-funded PhD Studentship. Candidates with an excellent qualification in Computer Engineering, Computer Science, Electronics or a related discipline are encouraged to apply. Applications must be received by the end of June 2015; however, you are encouraged to apply early, as we will award the scholarship as soon as a suitable candidate has been found).
PRiME (www.prime-project.org) is a high-profile UK funded inter... [more]