A5018121736- Innovative Energy Harvesting Technologies
- Energy Harvesting in Wireless Networks
- Smart Grid Energy Management
- Electric Power System Optimization
- Advanced Sensor and Energy Harvesting Materials
- Advanced Battery Technologies Research
- Smart Grid Security and Resilience
- Energy Efficient Wireless Sensor Networks
- Integrated Energy Systems Optimization
- Bluetooth and Wireless Communication Technologies
- Wireless Power Transfer Systems
- Advanced Thermoelectric Materials and Devices
- Power Systems and Renewable Energy
- Renewable energy and sustainable power systems
- Real-Time Systems Scheduling
- IoT and Edge/Fog Computing
- Power System Optimization and Stability
- Smart Grid and Power Systems
- Parallel Computing and Optimization Techniques
- Distributed and Parallel Computing Systems
- Gaze Tracking and Assistive Technology
- Embedded Systems Design Techniques
- Wireless Networks and Protocols
- Energy Efficiency and Management
- Power System Reliability and Maintenance
Comillas Pontifical University
2024
ETH Zurich
2015-2020
École Polytechnique Fédérale de Lausanne
2019
Energy harvesting is generally seen to be the key power cyber-physical systems in a low-cost, long term, efficient manner. However, has traditionally been coupled with large energy storage devices mitigate effects of source's variability. The emerging class transiently powered avoids this issue by performing computation only as function harvested energy, minimizing obtrusive and expensive element. In work, we present an Management Unit (EMU) supply generic loads when average much smaller...
With the appearance of wearable devices and IoT, energy harvesting nodes are becoming more important. The design evaluation these small standalone sensors actuators, which harvest limited amounts energy, requires novel tools methods. Fast accurate measurement systems required to capture rapidly changing scenarios characterize leakage currents efficiencies. need for real-world experiments creates a demand compact portable equipment perform in-situ power measurements environmental logging....
In this article, we introduce an energy harvesting system capable of converting bipolar thermal gradients to electrical energy. An active rectification circuit, impedance matching, and commodity thermoelectric generators are used efficiently extract from very small temperature found at the natural ground-to-air boundary. The full is modeled in detail radiation load. This end-to-end model enables dimensioning meet specific application requirements. A multiyear deployment supplying a wireless...
In this work, we present a formal study on optimizing the energy consumption of harvesting embedded systems. To deal with uncertainty inherent in solar systems, propose Stochastic Power Management (SPM) scheme, which builds statistical models harvested based historical data. The proposed stochastic scheme maximizes lowest across all time intervals while giving strict probabilistic guarantees not encountering battery depletion. For situations where data is available, use (i) Finite Horizon...
We report on a self-sustainable, wireless accelerometer-based system for wear detection in band saw blade. Due to the combination of low power hardware design, thermal energy harvesting with small thermoelectric generator (TEG), an ultra-low wake-up radio, management and complexity algorithm implemented, our solution works perpetually while also achieving high accuracy. The onboard processes sensor data, extracts features, performs classification needed blade's detection, sends wirelessly....
Energy harvesting is finding widespread use as a long-term energy supply for the Internet of Things (IoT). The dependency these devices on spatially and temporally variable environment further complicates reliable application design. We present indoor solar dataset to support modeling, analysis, calibration evaluation systems. More than 2 years joint high accuracy power ambient condition traces were collected at 6 diverse locations. provides solid foundation design validation prediction,...
While energy harvesting is generally seen to be the key power cyber-physical systems in a low-cost, long-term, efficient manner, it has required large storage devices mitigate effects of source’s variability. The emerging class transiently powered embrace this variability by performing computation proportion harvested, thereby minimizing obtrusive and expensive element. By using an Energy Management Unit (EMU), small bursts can buffered optimally sized capacitor used supply generic loads,...
Multicore systems are being increasingly used for embedded system deployments, even in safety-critical domains. Co-hosting applications of different criticality levels the same platform requires sufficient isolation among them, which has given rise to mixed-criticality scheduling problem and several recently proposed policies. Such policies typically employ runtime mechanisms monitor task execution, detect exceptional events like overruns, react by switching mode. Implementing such...
Sensing systems for long-term monitoring constitute an important part of the emerging Internet Things. In this domain, energy harvesting and infrastructure-less communication enable truly autonomous maintenance-free operation sensor nodes gathering environmental data. Due to nature communication, receivers are not always available. The variable provided by environment receiver’s mobility lead non-deterministic node availability. work, we study data transmission schemes optimize when both...
We demonstrate the RocketLogger, a mobile data logger designed for prototyping energy harvesting IoT devices. Novel applications require new dataloggers with highly increased dynamic range current measurement to accommodate both ultra-low sleep currents of few nanoamperes as well wireless communication in hundreds milliamperes. In parallel and high measurements, novel measurements easy in-situ characterization or wearable device testing. The RocketLogger is solution that fulfills these...
In this paper, a novel approach to define the optimal bidding of renewable-only virtual power plants (RVPPs) in day-ahead, secondary reserve, and intra-day markets is proposed. To aim, robust optimization algorithm developed account for asymmetric nature uncertainties that characterize market prices, as well energy production RVPP stochastic sources flexible demand consumption. Simulation results show increased benefits compared other existing solutions demonstrate potential renewable...
State-of-the-art wearable systems are typically performance-constrained, battery-based devices which can, at most, reach self-sustainability using energy harvesting and aggressive duty-cycling. In this work, we present a vision sensor node can reliably execute computationally-intensive computer-vision algorithms in an energy-opportunistic fashion. By leveraging burst-generation scheme, the proposed system efficiently provide guarantees required for tasks with temporal dependencies, even...
Energy harvesting systems strongly depend on the nondeterministic behavior of environment. Systematic and thorough evaluation these demands for tools that consistently reproduce conditions allow closely integrating highly dynamic applications. To this end, a testbed is introduced allows us to precisely repeatedly force an energy system under test using thermal radiative sources in controlled environment while allowing sinking arbitrary current profiles. The coordinated control boundary input...
Wearable technologies are flooding the consumer market, and have massively entered market of electronic consumers people now surrounded by an increasing number "smart" objects to wear. The main issue that limits success these devices is limited battery lifetime. Energy-neutral operation, which does not require recharging or replacement (similar automatic quartz watches) highly desirable in this context. In paper, we present first energy-neutral wearable device, equipped with ultra low power...