International Journal of Photoenergy (Jan 2012)

Optimized Solar Energy Power Supply for Remote Wireless Sensors Based on IEEE 802.15.4 Standard

  • Ondrej Krejcar,
  • Miroslav Mahdal

DOI
https://doi.org/10.1155/2012/305102
Journal volume & issue
Vol. 2012

Abstract

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Powering of intelligent wireless sensors without a permanent electric connection is a general problem which is often solved by adopting alternative power sources. One of the most commonly used sources is solar energy in the form of solar panel and charging circuits. However, it is not possible to find a solution in the markets for operation in changeable weather conditions, where sun intensity is not so high. This fact leads us to the development of optimized solar panel and all circuits for reliable power supply of wireless sensors. A special charging circuit for Li-ION battery and DC-DC adapter circuit for stabilization of wireless sensor working voltage were developed and optimized for very low energy consumption and high efficiency.