نتایج جستجو برای: harvesting efficiency
تعداد نتایج: 413220 فیلتر نتایج به سال:
Wearable electronics require a sustainable electrical power supply to operate. Energy harvesting techniques can be used to convert available nonelectrical energy sources into electrical energy. This paper presents WE-Harvest, a new wearable energy harvesting system that combines the piezoelectric and electromagnetic energy harvesters for wearable devices. Regular human body motions, such as mov...
Sensor nodes and other ultra-low power devices can be powered with micro energy harvesting. In case of low environmental power thermo generators, solar cells, inductive generators or radio frequency (RF) energy harvesting circuits provide an extremely low output voltage that needs to be increased to generate a suitable power supply. This paper presents a DC-DC converter that starts operation at...
The paper introduces the notion of “entropy harvesting” in physical and biological systems. Various physical and natural systems demonstrate the ability to decrease entropy under external stimuli. These systems, including stretched synthetic polymers, muscles, osmotic membranes and suspensions containing small hydrophobic particles, are called “entropic harvesters”. Entropic force acting in the...
Wireless sensor networks are event-based systems based on the collaboration of several micro sensor nodes. Due to the limited supply of power at sensor nodes, power efficient configuration of wireless sensor network has become a major design goal to improve the lifetime of the network. The cluster-based wireless sensor network can enhance the whole network lifetime by aggregating the collected ...
In today's world, there is a huge demand for portable electronic systems such as RFID cards, PDA, watches, calculators, cell phones, flash memories, MEMS, LCD drivers etc. The limited battery lifetime is the main concern of many portable systems. Energy harvesting system overcomes these problems by converting non-conventional energy into useful energy. The power converter plays an importan...
This study focuses on the numerical analysis of a high efficiency Energy Harvesting device, based on piezoelectric materials, for the sustainability of smart buildings, structures and infrastructures. Before that, a comprehensive literature review on the topic takes place. The device consists in an aerodynamic fin attached to a piezoelectric element that makes use of the air flow to harvest ene...
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 no...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید