Abstract
This document explains how to determine the power supply programs of WSN in environmental monitoring. The power consumption of Wireless sensor networks node in environmental monitor is estimated. The characteristics of several battery and super capacitor are analyzed; feasibility of long-term and stable power supply to the node is proofed. Different power supply programs are given according to the requirements of the working time and cost performance. The program which uses solar cells with maximum power point tracking technology, and use super-capacitor to store energy, is probed mainly. The circuit is design .It is tried in field.
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