A hardware and software platform for characterization and prototyping of a low-power energy-harvesting SoC (original) (raw)
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2018 IEEE 24th International Symposium for Design and Technology in Electronic Packaging (SIITME), 2018
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An Optimized Energy Harvesting Circuit for Low-Power IoT Applications
MIST INTERNATIONAL JOURNAL OF SCIENCE AND TECHNOLOGY
The concept and development of an independent energy harvesting mechanism functioning intermittently are described in this paper. A power management circuit (PMC) that is self-regulating, an energy scavenging module, a circuit for charging batteries, as well as an electronic load are all a component of the system that has been proposed. This proposed circuit is designed to attain a fixed output power with a diverse input range. In the unavailability of an additional voltage supply, the PMC can react, maintain, and smartly control the electronic load's power supply. The self-powered energy accumulating technique is expected to be used in situations when supplied power is inadequate to drive the load properly, such as Internet of Things (IoT) applications. IoT is a dispersed architecture of reduced-power, limited-storage, lightweight, and nodes that are adaptive. The majority of embedded IoT devices and low-power IoT sensors are driven by short-life batteries that must be replaced...
IEEE Circuits and Devices Magazine, 2006
S uccessful deployment of wireless sensor and actuator networks (WSNs) in numbers large enough to provide true ambient intelligence requires the confluence of progress in several disciplines, including distributed computing, networking, wireless communications, and, most importantly, ultra-low-power design. The latter is an essential cornerstone to the ultimate success of this innovative and paradigm-shifting concept for a number of reasons. Foremost, physical access to nodes in a deployed network may be difficult, and the sheer number of nodes makes changing batteries or manual refueling unrealistic. Hence, nodes should be energy self-contained for the lifetime of the application. In addition, node size is dominated by the energy storage and generation modules. Improved energy scavenging and lower power consumption result in smaller nodes, opening the door for a wider range of applications. Finally, energy storage and generation is responsible for a sizable fraction of the cost of a node. Ubiquitous deployment of large networks requires node costs substantially below what is available today.
Energy-Efficient Low-Power Circuits for Wireless Energy and Data Transfer in IoT Sensor Nodes
ArXiv, 2017
In this paper, we present techniques and examples to reduce power consumption and increase energy efficiency of autonomous Wireless Sensor Nodes (WSNs) for the Internet of Things. We focus on the RF Energy Harvester (RFEH), the data receiver and the transmitter, all of which have a large impact on the device cost, lifetime and functionality. Co-design of the antenna and the electronics is explored to boost the power conversion efficiency of the RF-DC converter. As a proof of principle, a charge pump rectifier is designed, and its measurement results are presented. To boost the rectifier output voltage, a DC-DC converter that employs maximum power point tracking has been designed. A prototype circuit is also presented that can accommodate an input power level range of 1 {\mu}W to 1 mW and offers peak efficiencies of 76.3% and 82% at 1 {\mu}W and 1 mW, respectively. The co-design principle is also used at the receiver side where the antenna-electronics interface is optimized. It is sh...
Smart Ultra Low Power Energy Harvesting System
International Journal of Adaptive, Resilient and Autonomic Systems, 2000
Small embedded systems operating in unattended conditions do need to be perpetually powered if a truly pervasive paradigm is envisaged. Harvesting energy from the surrounding environment seems to be the best option. For that, a set of systems has been proposed featuring interesting solutions but not yet capable of overcoming some issues like performance and flexibility. The authors propose a novel design for an environmental energy harvesting power supply that not only can work with multiple energy sources but also can extract the maximum possible energy from them. Additionally, it can provide important information concerning the energy resources of the system. Focusing particularly on the system’s design, the authors present results from a reference implementation that highlight the low wasted power and high efficiency characteristics of the system.
Energy harvesting technologies for lowpower electronics
2012
Power consumption is one of the most critical issues when designing low-cost electronic devices, such as sensing nodes in wireless sensor networks. To support their operation, such systems usually contain a battery; however, when the battery has consumed all its energy, the node (e.g. the sensor) must be retrieved and the battery replaced. If the node is located in a remote and non-accessible placement, battery replacement can become an expensive (and even impossible) task. This way, energy harvesting has emerged as a suitable alternative to supply low-power electronic systems, by converting ambient energy into electric power. Scavenged energy can be used to directly supply the circuits, or stored to be used when needed. This paper summarises the power needs of a general wireless sensor node and describes the main principles of most representative energy harvesting technologies.
2017
In this paper, we present techniques and examples to reduce power consumption and increase energy efficiency of autonomous Wireless Sensor Nodes (WSNs) for the Internet of Things. We focus on the RF Energy Harvester (RFEH), the data receiver and the transmitter, all of which have a large impact on the device cost, lifetime and functionality. Codesign of the antenna and the electronics is explored to boost the power conversion efficiency of the RF-DC converter. As a proof of principle, a charge pump rectifier is designed, and its measurement results are presented. To boost the rectifier output voltage, a DC-DC converter that employs maximum power point tracking has been designed. A prototype circuit is also presented that can accommodate an input power level range of 1μW to 1mW and offers peak efficiencies of 76.3% and 82% at 1μW and 1mW, respectively. The co-design principle is also used at the receiver side where the antenna-electronics interface is optimized. It is shown how this ...
IEEE Systems Journal, 2019
In this paper, we present the design of a new sensor node, named Multipurpose EnerGy-efficient Adaptable lowcost sensor Node (MEGAN), with all the desired features such as reconfigurability, flexibility, energy-efficiency, and low-cost required to build the Internet of Things (IoT). Apart from the ability to interface a maximum of 32 different sensors and actuators, MEGAN allows a user to choose the desired communication module, depending on the required range of communication. We design a novel power management circuit to extend the lifetime of the resource-constrained sensor node. Additionally, it has an integrated recharging circuit on board, which can use the energy harvested from any unregulated energy source. MEGAN combats a major drawback of applicationspecific sensor nodes, because of the integration of switches and a programming port. The flexibility of MEGAN, with respect to the integration of any sensor or actuator, makes it a multipurpose adaptable sensor node. The analysis of the lifetime, received signal strength indicator, packet delivery ratio, adaptability, and reliability of MEGAN under different operating conditions establish the energy efficiency and superiority of its hardware design.