期刊名称：International Journal of Computer Technology and Applications
电子版ISSN：2229-6093
出版年度：2011
卷号：2
期号：4
页码：790-797
出版社：Technopark Publications
摘要：Sensor networks are highly distributed networks of small, light weight wireless sensor nodes, deployed in large numbers to monitor the environment or system by the measurement of physical parameters such as temperature, pressure, or relative humidity, sound,vibration, motion or pollutants, at different locations. A WSN [1] is composed of a large number of low-costsensor nodes (SNs) and one or several base stations(BS) or destination nodes. SNs are typically small wireless devices with limited computational power,equipped with a radio transceiver or other wireless communications device, radio transmission range, storage size, a small microcontroller, battery power.Sink nodes or destination nodes are distinguishing devices with powerful computation capacity, large memory size, high power energy and long communication range so as to collect data from SNs.Sink nodes act as the gateway between WSNs and the end user
