| 层次分簇的无线传感网络多级优化测量 |
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| 引用本文： | 王雪,丁梁,王晟,毕道伟.层次分簇的无线传感网络多级优化测量[J].机械工程学报,2009,45(4). |
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| 作者姓名： | 王雪 丁梁 王晟 毕道伟 |
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| 作者单位： | 清华大学精密测试技术及仪器国家重点实验室,北京,100084 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家自然科学基金 |
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| 摘 要： | 层次化的无线传感网络由骨干传感节点和普通传感节点组成.由于节点能量受限,无线传感网络跟踪测量目标时需同时考虑目标跟踪精度和跟踪方法的能效性.提出一种层次分簇的多级优化无线测量方法.将骨干节点作为簇首,采用粒子滤波算法预测运动目标位置,运用DELAUNAY三角剖分优化选择目标附近的节点作为测量节点,并根据测量节点地理位置判断是否转移簇首.在测量节点同步的感知目标后,簇首利用熵来逐次选择能效性最高的测量节点数据进行融合,实现目标定位测量.试验表明,该方法能满足目标跟踪精度,并可有效的减少网络能耗,提高无线传感网络测量使用寿命.
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| 关 键 词： | 无线传感网络 层次化 动态分簇 多级优化 |
Multi-step Optimized Measurement in Hierarchically Clustered Wireless Sensor Networks |
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| WANG Xue,DING Liang,WANG Sheng,BI Daowei.Multi-step Optimized Measurement in Hierarchically Clustered Wireless Sensor Networks[J].Chinese Journal of Mechanical Engineering,2009,45(4). |
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| Authors: | WANG Xue DING Liang WANG Sheng BI Daowei |
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| Affiliation: | State Key Laboratory of Precision Measurement Technology;Tsinghua University;Beijing 100084 |
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| Abstract: | Hierarchical wireless sensor networks(WSNs) consist of backbone nodes and normal sensor nodes.Because of limited energy resource, tracking targets in WSN should consider both the tracking accuracy and energy consumption.A multi-step optimized measurement approach based on dynamic clustering is proposed.The backbone node implements particle filter to predict target locations, and selects normal sensor nodes around the target to be measurement sensors based on DELAUNAY triangulation.It then judges whether the... |
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| Keywords: | Wireless sensor networks Hierarchical Dynamic clustering Multi-step optimization |
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