A real-time data compression wireless sensor network based on Lempel-Ziv-Welch encoding(LZW)algorithm is designed for the increasing data volume of terminal nodes when using ZigBee for long-distance wireless communica...A real-time data compression wireless sensor network based on Lempel-Ziv-Welch encoding(LZW)algorithm is designed for the increasing data volume of terminal nodes when using ZigBee for long-distance wireless communication.The system consists of a terminal node,a router,a coordinator,and an upper computer.The terminal node is responsible for storing and sending the collected data after the LZW compression algorithm is compressed;The router is responsible for the relay of data in the wireless network;The coordinator is responsible for sending the received data to the upper computer.In terms of network function realization,the development and configuration of CC2530 chips on terminal nodes,router nodes,and coordinator nodes are completed using the Z-stack protocol stack,and the network is successfully organized.Through the final simulation analysis and test verification,the system realizes the wireless acquisition and storage of remote data,and reduces the network occupancy rate through the data compression,which has a certain practical value and application prospects.展开更多
结合ZigBee技术和ARM技术的发展及无线数据传输系统的需求,提出了一种基于ZigBee和ARM技术的无线传感器网络设计方案,系统主要包括ZigBee节点和ZigBee基站节点,利用MSP430F149和CC2420架构ZigBee节点,用嵌入式ARM7芯片STR710FZ2T6和CC2...结合ZigBee技术和ARM技术的发展及无线数据传输系统的需求,提出了一种基于ZigBee和ARM技术的无线传感器网络设计方案,系统主要包括ZigBee节点和ZigBee基站节点,利用MSP430F149和CC2420架构ZigBee节点,用嵌入式ARM7芯片STR710FZ2T6和CC2420架构ZigBee基站节点,构成低功耗、低成本的硬件平台,并采用部分网状(PartialMesh)拓扑结构、Z-Stack协议栈开发软件和按需路由算法(Ad Hoc On-demand Distance Vector),嵌入TinyOS系统,实现基于ZigBee技术的无线数据传输系统。可实现一点对多点、两点间对等通信,快速组网自动配置、自动恢复,节点之间可相互协调实现数据通信。展开更多
针对农田数据采集系统有线传输方式常受到地形、安装环境等限制问题,提出了一种基于ZigBee数据采集传输系统。采用CC2530芯片为主搭建无线传感器网络,终端和协调器采用半开源的Z-Stack协议栈进行程序开发,上位机基于Visio Studio 2015...针对农田数据采集系统有线传输方式常受到地形、安装环境等限制问题,提出了一种基于ZigBee数据采集传输系统。采用CC2530芯片为主搭建无线传感器网络,终端和协调器采用半开源的Z-Stack协议栈进行程序开发,上位机基于Visio Studio 2015平台采用C#语言进行软件开发,并配合ACCESS数据库,共同实现了系统的远程检测与本地保存和动态显示。在玉米试验田进行实地测试,终端按采集需要暂时设定为每间隔1 h采集一次数据,其余时间处于休眠状态。经计算,终端预计工作时间为100 d左右;且经过测试,终端与协调器的有效传输距离能达到80 m,数据传输有效率达92%。结果表明:该系统具有低功耗、低成本、系统运行稳定、可扩展性强等特点,满足农业信息化的需求。展开更多
文摘A real-time data compression wireless sensor network based on Lempel-Ziv-Welch encoding(LZW)algorithm is designed for the increasing data volume of terminal nodes when using ZigBee for long-distance wireless communication.The system consists of a terminal node,a router,a coordinator,and an upper computer.The terminal node is responsible for storing and sending the collected data after the LZW compression algorithm is compressed;The router is responsible for the relay of data in the wireless network;The coordinator is responsible for sending the received data to the upper computer.In terms of network function realization,the development and configuration of CC2530 chips on terminal nodes,router nodes,and coordinator nodes are completed using the Z-stack protocol stack,and the network is successfully organized.Through the final simulation analysis and test verification,the system realizes the wireless acquisition and storage of remote data,and reduces the network occupancy rate through the data compression,which has a certain practical value and application prospects.
文摘结合ZigBee技术和ARM技术的发展及无线数据传输系统的需求,提出了一种基于ZigBee和ARM技术的无线传感器网络设计方案,系统主要包括ZigBee节点和ZigBee基站节点,利用MSP430F149和CC2420架构ZigBee节点,用嵌入式ARM7芯片STR710FZ2T6和CC2420架构ZigBee基站节点,构成低功耗、低成本的硬件平台,并采用部分网状(PartialMesh)拓扑结构、Z-Stack协议栈开发软件和按需路由算法(Ad Hoc On-demand Distance Vector),嵌入TinyOS系统,实现基于ZigBee技术的无线数据传输系统。可实现一点对多点、两点间对等通信,快速组网自动配置、自动恢复,节点之间可相互协调实现数据通信。
