SENSYS

Solar harvest prediction is used in energy-harvesting sensor networks to achieve perpetual node operation. Existing approaches only exploit local knowledge and thus fail in unforeseeable, changing weather conditions. We investigate the benefit of ...

The key motivation for this work is the fact that modeling energy storage devices such as supercapacitors (SCs) for wireless sensor networks (WSNs) is important for the design and performance assessment of harvesting-aware routing protocols of the ...

Power management of mobile embedded devices remains important with the slow growth of battery energy density relative to computing power. Estimating the state of charge (SOC) of battery is key for scheduling power intensive tasks, yet current approaches ...

The notion of perpetual operation using energy harvesting sensor networks are usually crippled by the limited cycle life of the rechargeable batteries (RB). Though the idea of complementing the operation of RBs by using supercapacitors (SCs) is not ...

This working paper introduces a multi-source energy harvesting powered acoustic emissions (AE) monitoring system for the applications of rotating machine fault detections. This wireless sensor prototype records the AE signal at approximately 200KHz ...

The architecture of air-flow energy harvesters generally consists of a first rectifying stage followed by a DC-DC regulator to convert and to store the incoming energy. This paper presents a circuit designed to improve the efficiency of the rectifying ...

The emergence of energy-scavenging techniques for powering networks of embedded devices is raising the need for dedicated simulation frameworks that can support researchers and developers in the design and performance evaluation of harvesting-aware ...

We present an energy harvesting solution for a wireless sensor network for indoor environmental monitoring in data centers. The energy that supplies the nodes is harvested from the heat generated by the server microprocessors using Thermo Electric ...

We present the modeling, implementation, and evaluation of a single wireless sensor network that executes energy-harvesting algorithms and sensing applications. The network energy-management is modeled as a feedback control system. An asynchronous ...

To extend the system lifetime of WSN, energy harvesting techniques have been considered as potential solutions for long-term operations. Instead of minimizing the consumed energy as for the case of battery-powered systems, the harvesting node is adapted ...

Wireless sensor networks are increasingly using energy harvesting to extend their lifetime and avoid battery replacement. However, ambient energy sources typically exhibit temporal-spatial variation, and complex power management algorithms have been ...

In spite of the availability of ultra-low-power microcontrollers and radio transceivers, the power consumption of an active sensor node is much higher than the power provided by state-of-the-art harvesters of suitable size and cost. Hence, the ...

There are two simple methods of supplying power to a wireless, low-power sensor in an aircraft: a battery, or direct access to the aircraft power line. In the former, the battery will eventually need to be replaced whilst the latter option, which is ...

The majority of Wireless Sensor Networks (WSNs) applications requires long-term and unattended operation for each wireless sensor node. Scavenging energy from the surrounding environment has become an established technique to match the power demand of ...

We present the design of a Wireless Electrical Energy Metering node (WEM) for the integration in a wireless sensor network. The node has energy harvesting capability for long lasting monitoring, and measures the power consumption, of residential and ...

A novel approach to achieve long term system operation is using hydrogen fuel cells, which feature much higher energy density if compared with standard batteries. In this demonstrator we show a power unit which activates the hydrogen flow through an ...

In this demo, we explore the critical role that power plays in the development of a mm-scale system. We argue that any practical deployment of a mm-scale system must have a significant energy harvesting component. We demo the newest M3 system, a self-...

Machinery condition monitoring is an established application for wireless sensor networks and energy harvesting technologies. However, vibration energy harvesters are generally applicable only to fixed-frequency vibration sources, as commercial ...

In this paper, a multi-source power manager (PM) is applied using different types of energy harvesting WSN. Specifically, this PM is embedded in both thermal and solar-powered WSN in order to adapt the consumed energy of the node by changing its wake-up ...

In this paper, a wireless temperature measurement system powered by energy harvesting from human motion is presented. The user force exerted on the hand-crank ElectroMagnetic (EM) device is converted into electricity. The electrical energy is stored ...