Title :
Design of Power Supply System for Field Wireless Sensor Network Nodes
Author :
Zheng Jie ; Yang Bo
Author_Institution :
Sch. of Autom. Sci. & Electr. Eng., Beihang Univ., Beijing, China
Abstract :
A simple power supply solution with solar energy photovoltaic cells is put forward for low-power field devices like wireless sensor network (WSN) nodes for environmental surveillance. In order to reduce the system´s power loss and improve the efficiency of solar energy photovoltaic cells, the battery´s output characteristics and the leakage current of supercapacitor (SC) are investigated and the power system with matching SCs and solar cells is designed. Then the two-stage energy storage structure including SCs and NIMH batteries are used to store electric power, and the output voltages and currents of power supply are analyzed. The experimental results show that the system can reserve enough energy and meet the long-term power supply requirements of wireless sensor network nodes in the field.
Keywords :
power supplies to apparatus; secondary cells; solar cells; supercapacitors; wireless sensor networks; field WSN nodes; field wireless sensor network nodes; leakage current; low-power field devices; power supply system; solar energy photovoltaic cells; supercapacitor; two-stage energy storage structure; Batteries; Leakage current; Maximum power point tracking; Photovoltaic cells; Power demand; Wireless sensor networks; Photovoltaic cells; Power supply; Supercapacitor; Wireless sensor network node;
Conference_Titel :
Instrumentation, Measurement, Computer, Communication and Control (IMCCC), 2012 Second International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4673-5034-1
DOI :
10.1109/IMCCC.2012.16
