低功耗射频唤醒无线传感器网络设计

针对无线传感器网络采用睡眠/唤醒机制来实现低功耗时,不可避免地引起网络响应时延的问题.在波束供电技术的基础上提出了无线传感器网络低功耗射频唤醒机制,给出了低功耗射频唤醒无线传感器网络节点的硬件结构和详细设计.节点通过从电磁波中获取能量来及时地唤醒自己,以达到提高实时性的目的.性能分析表明低功耗射频唤醒无线传感器网络节点比采用传统睡眠/唤醒机制的节点具有更高的实时性和更低的功耗.

Design of a low power RF wake-up wireless sensor networks

The sleep/wake-up method is usually used for reducing energy consumption in wireless sensor networks. However, the sleep/wake-up method will results in the long delay of event response. We propose the low power RF (Radio Frequency) wake-up mechanism instead of the sleep/wake-up method to improve energy efficiency and fast response capability by collecting the energy from radio frequency wave. We also describe RF wake-up scheme and the architecture of the sensor node in detail. Analyze of energy consumption and delay of nodes shows that the network with RF wake up module has the low power consumption and short delay capability.