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Currently the appearance of really low power wireless transceivers is motivating the use of renewable energies to power embedded wireless sensor nodes in many applications. Nevertheless, energy storage and its degradation still keep on being the main issues in the design of any battery powered device. We present an autonomous power source based on a new system architecture, which uses the energy scavenging...
In this paper, we discuss the feasibility of extracting energy from broadcast RF signals, mainly from TV or radio emissions. This method would avoid the dedicated RF energy suppliers that use some wireless sensor networks, which would be especially useful in ultra-low power stand-alone nodes (outdoor). The energy flow is uninterrupted and a capacitor can be slowly charged by means of a rectifier and...
Currently the appearance of really low power wireless transceivers at very low prices is motivating the development of many wireless applications out of the industrial field, which up to now turn to be large in size and expensive. We present the design of a tiny and low cost Wireless Weather Station to measure accurate temperature (plusmn0.1degC), relative humidity (plusmn3%), light intensity and...
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