低成本分布式驱动大型特殊传感器网络[外文翻译].rar

低成本分布式驱动大型特殊传感器网络[外文翻译]



摘要

在传感器网络中分布式驱动是一种主要的手段，它是依靠传感器提供的信息和执行器的能力来精确地达到所要期望的条件。在大型特殊式传感器执行器网络中，传统的集中控制形式已不在受欢迎，因为比例精度、对信息迟滞和能量消耗量等因素的限制。把分布式驱动的问题放在无线传感器网络中，传感器和执行器组首先可以得到有效地匹配，这样问题的讨论和解决方法都可以在局部方式中进行。

在本次讨论中，我们给出一组传感器和可控制的多重输入源（如光、热等要改变的想象），要解决这个问题我们可以用公式来简单地描述这传感执行器系统从而用二次方程组设计出其数学模型。这样我们便可以局部化地探索式研究调整来得到近似理想的状态，而这个理想的结果是信息的相互交换和能量消耗都能精确、迅速地完成。我们也可以简单地讨论把类似的运算法则应用于传感器间、执行器间等匹配问题甚至于传感器与每一个执行器间的匹配问题。光敏传感器和环境输入是本篇文章讨论的重点。

Abstract

Distributed actuation is a major application of sensor

networks that relies on the iniformation provided by the sen-

sors and the ability of the actuators to change the environ-

ment, to try to achieve a set of desired conditions. In large

scale ad hoc distributed sensor-actuator networks, tradi-

tional centralized control algorithms are undesirable due

to limiting factors such as scalinig, delays associated with

collectinig informnation, and energy conslumption. To tackle

distributed actuation problems in wireless sensor networks,

groups of sensors anid actuators canfirst be matched (clus-

tered) efficiently and then the problem posed and solved in

localized manners.

In this paper givena a set of sensors and control-

lable sources of superposable phetnomena (e.g. light and

heat), we first formulate and optintally solve the distrib-

uted sensor-actuator problem as an instance of central-

ized quadratic programming. We then investigate localized

heuristics that can achieve near optimal results while trad-

ing off message exchanges and energy consumption for ac-

curacy and latency in obtaining the results. We also briefly

discuss the clustering algorithm used as a heuristicfor solv-

itng the matching problem associated with matching the seni-

sors to the proper actuators. Light sensors and sources are

utsed throughout the paper as an illustrating application.