基于WSN的温室温度分布式事件触发控制系统研究  

Research on distributed event-triggered control system based on WSN for greenhouse temperature

作　　者：李富强[1,2] 郑宝周[1] 豆根生[1] 林爱英[1] 

机构地区：[1]河南农业大学理学院,河南郑州450002 [2]上海大学机电工程与自动化学院,上海200072

出　　处：《现代电子技术》2015年第15期15-17,21,共4页Modern Electronics Technique

基　　金：国家级大学生创新创业训练计划项目(201310466025);河南农业大学科技创新项目(KJCX2015A19;KJCX2015A17)

摘　　要：在温室温度控制系统中,针对无线传感器网络的通信带宽及节点资源受限问题,提出分布式事件触发控制方案。在分布式事件触发机制下,各传感器节点基于自身信息,仅在系统有控制需求时发送状态采样值,有效地节约了系统资源。因为算法简单且能改善早熟收敛问题,采用基于混沌变异的粒子群算法计算最优控制量,仿真表明,分布式事件触发机制下节点数据发送率大大降低,系统仍能达到满意的控制效果。In greenhouse temperature control system,since communication bandwidth and node resources in wireless sensor network(WSN)are constrained,a distributed event?triggered control scheme is proposed. In the scheme,each sensor node in combination with its own information transmits state sampling values only when system has control requirements,which saves sys?tem resources effectively. Particle swarm optimization(PSO)based on chaos variation was adopted to calculate optimum control quantity,which is simple and can improve premature convergence. Simulation results show that data transmission rate of sensor nodes is reduced greatly under distributed event?triggered control mechanism,but system still achieves satisfied control effect.

关 键 词：无线传感器网络 分布式事件触发 粒子群 混沌变异 

分 类 号：TN876.334[电子电信—信息与通信工程] TP273.5[自动化与计算机技术—检测技术与自动化装置]