用于水下网络节点的超低功耗远程接入系统

Remote Access System of Ultra-low Power for Underwater Network Nodes

论文提出了一种用于水下传感器网络节点的超低功耗远程接入系统的设计方案。并设计了高灵敏度、低噪声的接收机带通滤波器,提高了系统对微弱信号的检测能力,实现了超低功耗、窄带滤波。该系统将设计的高性能、超低功耗滤波器与抗干扰能力强的直接序列扩频(DS-SS)技术和低功耗的"sleep-wake"工作模式相结合,实现了0.5μV水下特定频带内微弱信号的检测,可用于远程配置水下传感器网络,为水下传感器网络提供一个安全的、可靠的信息交互途径。完成的系统样机性能可靠、功耗低,并经过湖试验证,性能满足实际要求。

A design of a sensor network node underwater for ultra low power consumption remote access system was presented in the paper. A band pass filter receiver with high sensitivity and low noise was designed, which improved the detection ability of the system to the weak signal and got ultra low power, narrow band filter. The weak signal detection of underwater specific frequency band in 0. 5uV was real- ized by combined the direct sequence expansion technique which has high performance, ultra low power filter and strong anti-interference ca- pacity with low power ＂sleep wake＂ operation mode. The design can be used for remote configuration of underwater sensor networks, to pro- vide a safe, reliable information interactive approach for underwater sensor networks. The performance of prototype of the system with performance reliable and low power consumption which has passed the lake test certificate meet the practical requirement.