摘要
信号随着时间的变化是众多应用领域的测量要求。传统的传感器连续采样模式功耗大,不适用于无线传感器节点。文章提出一种无线传感器节点动态采样策略DSI,通过分析当前和历史采样数据引入负反馈调节的方法来动态确定传感器节点的采样间隔,以较低的采样频度、数据上传频度满足测量要求,从而降低能耗提高传感器节点寿命。仿真结果表明,与周期采样策略、SOD采样策略相比,DSI采样策略显著降低了传感器节点能耗。
Signal change with time is a measurement requirement for many application fields. Traditional continuously sampling strategy is not suitable for wireless sensor nodes because of its high energy consumption. The dynamic sampling control strategy DSI was proposed for wireless sensor nodes. By analyzing current and historical sampling data to dynamically determine the sampling interval of sensor nodes under negative feedback regulation. A lower sampling frequency and a lower data uploaded frequency are taken to meet the measurement requirements.Thereby energy consumption is reduced to improve the life of the sensor nodes. The simulation results demonstrate that the DSI strategy is obviously effective in comparison to the periodic strategy and the SOD strategy in saving energy consumption of sensor nodes.
出处
《电子测量与仪器学报》
CSCD
北大核心
2016年第2期249-255,共7页
Journal of Electronic Measurement and Instrumentation
基金
国家自然科学基金(61370088)
国家国际科技合作专项(2014DFB10060)
安徽省高等学校省级自然科学研究(KJ2012A224)项目资助
关键词
无线传感器节点
动态采样策略
采样间隔
wireless sensor nodes
dynamic sampling control strategy
sampling interval
