Aiming at the defects of the nodes in the low energy adaptive clustering hierarchy （LEACH） protocol, such as high energy consumption and uneven energy consumption, a two-level linear clustering protocol is built. Th...Aiming at the defects of the nodes in the low energy adaptive clustering hierarchy （LEACH） protocol, such as high energy consumption and uneven energy consumption, a two-level linear clustering protocol is built. The protocol improves the way of the nodes distribution at random. The terminal nodes which have not been a two-level cluster head in the cluster can compete with the principle of equivalent possibility, and on the basis of the rest energy of nodes the two-level cluster head is selected at last. The single hop within the cluster and single hop or multiple hops between clusters are used. Simulation experiment results show that the performance of the two-level linear clustering protocol applied to the Hexi corridor agricultural field is superior to that of the LEACH protocol in the survival time of network nodes, the ratio of success, and the remaining energy of network nodes.展开更多
为提高农田环境下的传感器网络传输效率,减少非电力网络供电状态下的传感器网络系统耗电和延长网络系统使用寿命,采用Anycast多基站网络通信系统服务技术,为每个农田环境传感器基站搭建一个Anycast通信服务,优化无线传感器数据节点间通...为提高农田环境下的传感器网络传输效率,减少非电力网络供电状态下的传感器网络系统耗电和延长网络系统使用寿命,采用Anycast多基站网络通信系统服务技术,为每个农田环境传感器基站搭建一个Anycast通信服务,优化无线传感器数据节点间通过最小网桥间距离的生成树协议(Spanning Tree Protocol,STP)度量,实现不同服务质量要求的数据时延应用。通过仿真实验,采用Anycast多基站网络通信系统服务技术能有效改善农田环境无线传感器网络多基站的通信服务,延长传感器网络系统的使用周期,为农田环境下的无线传感器网络系统搭建提供一种节能、有效的方法。展开更多
为满足农业现代化、智能化和信息化的需要,提出一种基于物联网(Internet Of Things,IOT)的农田环境监控系统,通过无线传感器网络(Wireless Sensor Network,WSN)技术,实现农田温度、光照等环境信息的自动化采集与存储。农田现场环境信息...为满足农业现代化、智能化和信息化的需要,提出一种基于物联网(Internet Of Things,IOT)的农田环境监控系统,通过无线传感器网络(Wireless Sensor Network,WSN)技术,实现农田温度、光照等环境信息的自动化采集与存储。农田现场环境信息的采集作为系统最基本功能,必须保证信息采集的完整性、可靠性和实时性,设计并实现一种既能进行网内数据聚合,又能满足超限数据紧急处理的农田现场数据汇聚机制,并针对数据汇聚过程中可能出现的超时和超限等问题,分别采取相应的应对措施。最后针对不同传感节点配备的传感器类型可能不同,设计统一的数据收集方案。结果表明,采用提出的现场数据汇聚机制的农田环境监控无线传感器网络能够正常稳定地工作,并能实时可靠地传输数据。展开更多
基金supported by the Foundation Projects in Gansu Province Department of Education under Grant No.2015A-163
文摘Aiming at the defects of the nodes in the low energy adaptive clustering hierarchy （LEACH） protocol, such as high energy consumption and uneven energy consumption, a two-level linear clustering protocol is built. The protocol improves the way of the nodes distribution at random. The terminal nodes which have not been a two-level cluster head in the cluster can compete with the principle of equivalent possibility, and on the basis of the rest energy of nodes the two-level cluster head is selected at last. The single hop within the cluster and single hop or multiple hops between clusters are used. Simulation experiment results show that the performance of the two-level linear clustering protocol applied to the Hexi corridor agricultural field is superior to that of the LEACH protocol in the survival time of network nodes, the ratio of success, and the remaining energy of network nodes.
文摘为提高农田环境下的传感器网络传输效率,减少非电力网络供电状态下的传感器网络系统耗电和延长网络系统使用寿命,采用Anycast多基站网络通信系统服务技术,为每个农田环境传感器基站搭建一个Anycast通信服务,优化无线传感器数据节点间通过最小网桥间距离的生成树协议(Spanning Tree Protocol,STP)度量,实现不同服务质量要求的数据时延应用。通过仿真实验,采用Anycast多基站网络通信系统服务技术能有效改善农田环境无线传感器网络多基站的通信服务,延长传感器网络系统的使用周期,为农田环境下的无线传感器网络系统搭建提供一种节能、有效的方法。
文摘为满足农业现代化、智能化和信息化的需要,提出一种基于物联网(Internet Of Things,IOT)的农田环境监控系统,通过无线传感器网络(Wireless Sensor Network,WSN)技术,实现农田温度、光照等环境信息的自动化采集与存储。农田现场环境信息的采集作为系统最基本功能,必须保证信息采集的完整性、可靠性和实时性,设计并实现一种既能进行网内数据聚合,又能满足超限数据紧急处理的农田现场数据汇聚机制,并针对数据汇聚过程中可能出现的超时和超限等问题,分别采取相应的应对措施。最后针对不同传感节点配备的传感器类型可能不同,设计统一的数据收集方案。结果表明,采用提出的现场数据汇聚机制的农田环境监控无线传感器网络能够正常稳定地工作,并能实时可靠地传输数据。
