关键词：光机电；传感器；无线网络；能源效率
摘 要：Wireless sensor networks (WSNs) represent a new domain of distributed computing that has attracted great research interest over the last years. A WSN is composed of a large number of tiny battery-operated devices equipped with one or more sensing units, processor, memory, and wireless radio. The main goal of WSNs is to collect data about physical phenomena and deliver them to user applications through one or more exit points called sink nodes. Sink nodes are powerful devices, often a personal computer, that are in charge of gathering all the sensor-collected data, further processing them, and making them available to external networks such as the Internet.