Analysis of the Power Consumption for Wireless Sensor Network Node Based on Zigbee

Study the prominent characteristics of ZigBee technology on wireless sensor networks, especially on the power consumption of the nodes. In order to reduce the power consumption of wireless sensor network node, this paper simulate the relation between the power consumption and the signal to noise ratio for the communications modulation, the relation between the power consumption and the transmission delay for the sleep mechanism, and the relation between the power consumption and the network throughput for MAC, by hardware structure and MAC protocols of the physical layer of the wireless sensor network node. And analyse the power consumption of the wireless sensor network node further. The modulation of PSK consumes the least power in all of the modulations of the wireless sensor network node obviously; the power consumption of EEMAC is the lowest in the MAC. The results show that the algorithm of EEMAC and the modulation of PSK are very compatible with the cooperations of many nodes. These results are very helpful to the structure optimization of the wireless sensor network node of ZigBee and the reducing of the power consumption of transfer data. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Harbin University of Science and Technology