为满足无线网络技术具有低功耗、节点体积小、网络容量大、网络传输可靠等技术要求,设计了一种以MSP430单片机和CC2420射频收发器组成的无线传感节点。通过分析其节点组成,提出了ZigBee技术中的几种网络拓扑形式,并研究了ZigBee路由算法。针对不同的传输要求形式选用不同的网络拓扑形式可以尽大可能地减少系统成本。同时针对不同网络选用正确的ZigBee路由算法有效地减少了网络能量消耗,提高了系统的可靠性。应用试验表明,采用ZigBee方式通信可以提高传输速率且覆盖范围大,与传统的有线通信方式相比可以节约40%左右的成本。 Abstract: To improve the proposed technical requirements such as low-ower, small nodes, large capacity and reliable network transmission, wireless sensor nodes based on MSP430 MCU and CC2420 RF transceiver were designed. This paper provided network topology of ZigBee technology by analysing the component of the nodes and researched ZigBee routing algorithm. Aiming at different requirements of transmission mode to choose the different network topologies form can most likely reduce the system cost. And aiming at different network to choose the correct ZigBee routing algorithm can effectively reduced the network energy consumption and improved the reliability of the system. Results show that the communication which used ZigBee mode can improve the transmission rate, cover more area and reduce 40% cost compared with traditional wired communications mode.
上传时间: 2013-10-09
上传用户:robter
针对大型工程机械各类信号与驾驶操控室仪表异地显示的通信问题,提出了基于射频收发器nRF2401实现无线数据通信的设计方案,详细介绍了射频芯片nRF2401的工作原理及特点, 并给出了无线通信平台硬件结构、接口电路及相应程序框图。经过测试,该通信平台上通信速率高、质量好,空旷处的传输距离可达100 m。
上传时间: 2013-12-27
上传用户:love_stanford
藤楼庄园USB工具箱藤楼庄园USB设备检测工具箱为免费软件,集成了10个网上流行的USB设备的检测工具,能够对大多数USB接口的U盘、移动硬盘、MP3播放器等设备进行检测或修复。本软件所采用的10款工具均来源于网络,其版权归原作者所有,本软件只进行聚合与推广,方便大家对USB设备的应用。
上传时间: 2013-10-21
上传用户:38553903210
藤楼庄园USB工具箱藤楼庄园USB设备检测工具箱为免费软件,集成了10个网上流行的USB设备的检测工具,能够对大多数USB接口的U盘、移动硬盘、MP3播放器等设备进行检测或修复。本软件所采用的10款工具均来源于网络,其版权归原作者所有,本软件只进行聚合与推广,方便大家对USB设备的应用。
上传时间: 2013-11-13
上传用户:familiarsmile
This application note contains a reference design consisting of HDL IP and Xilinx AdvancedConfiguration Environment (ACE) software utilities that give designers great flexibility increating in-system programming (ISP) solutions. In-system programming support allowsdesigners to revise existing designs, package the new bitstream programming files with theprovided software utilities, and update the remote system through the JTAG interface using theEmbedded JTAG ACE Player.
上传时间: 2013-10-22
上传用户:gai928943
MP3 portable players are the trend in music-listening technology. These players do not includeany mechanical movements, thereby making them ideal for listening to music during any type ofactivity. MP3 is a digital compression technique based on MPEG Layer 3 which stores music ina lot less space than current CD technology. Software is readily available to create MP3 filesfrom an existing CD, and the user can then download these files into a portable MP3 player tobe enjoyed in almost any environment.
上传时间: 2013-11-23
上传用户:nanxia
VB课程设计,很不错的,播放器实验报告
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上传时间: 2013-12-22
上传用户:agent
利用FLASH SDK直接生成的FLASH作品,控制 标记来操纵这些动画元素和动画流程,播放器在控制标记的操纵下播放动画。
上传时间: 2014-01-06
上传用户:tfyt
利用FLASH SDK直接生成的FLASH作品,控制 标记来操纵这些动画元素和动画流程,播放器在控制标记的操纵下播放动画。..
上传时间: 2015-03-13
上传用户:SimonQQ
利用FLASH SDK直接生成的FLASH作品,控制 标记来操纵这些动画元素和动画流程,播放器在控制标记的操纵下播放动画。..
上传时间: 2014-11-23
上传用户:gtzj