WinCE下基于Zigbee技术的短距离无线搜寻器的设计

在Zigbee多节点的应用场合中,为了能够方便快捷的查找某个节点,或者监测周围移动节点在一个范围内的情况．提出了无线搜寻的概念。本设计是一种在WinCE下基于Zigbee短距离无线搜寻系统。可以对几十米内遵循ZigBee协议的产品进行搜寻．用于搜寻的模块使用串口与装有WinCE操作系统的手持设备进行数据通信,并通过WinCE上的软件将周围设备与手持设备的大概距离显示出来。     

煤矿机电设备闭环点检信息采集系统设计

提出了一种基于Zigbee无线传感器网络的煤矿机电设备闭环点检信息采集系统设计方案,重点介绍了该系统中多星型网络拓扑结构的设计及无线传感器网络节点和智能手持设备的软硬件设计。测试结果表明,该系统有效地完成了不同区域内若干无线传感器网络节点数据的采集功能,且具有较好的稳定性。     

基于S133L05的Zigbee网络控制器的设计

本项目设计了一款用于管理Zigbee无线网络设备的手持控制设备,该控制器选用Epson的32位单片机SlC33L05为主控处理器,以基于IEEE 802.15.4的Zigbee技术作为无线标准的网络控制器(Commander)的设计,实现了对智能家居设备的控制。     

基于S133L05的Zighee网络控制器的设计

本项目设计了一款用于管理Zigbee无线网络设备的手持控制设备,该控制器选用Epson的32位单片杌SlC33L05为主控处理器,以基于IEEE 802.15.4的Zigbee技术作为无线标准的网络控制器(Commander)的设计,实现了对智能家居设备的控制.     

基于ARM-WinCE5.0的嵌入式Wi-Fi商品快速定位系统

手持设备在工业和移动产品领域得到广泛应用并使得ARM处理器与WindowsCE操作系统紧密耦合。采用ADOCE作为WindowsCE操作系统下访问数据库提供的策略性高级接口．由OLEDB数据接口实现SQL Server CE的快速数据访问．而利用远程数据访问（KDA）和无线局域网（Wi—Fi）技术支持手持移动设备与SQL Serve服务器之间无线数据同步功能。通过综合分析并结合各自特点．在ARM—WinCE5．0平台上成功实现无线商品快速定位系统．并验证了其可操作性和有效性．产生了良好的经济效益。     

海信HPC预览

现在国际上正兴起一股PDA与手持PC的热潮。3Com的PalmPilot走俏欧美;微软下大力气开发适合手持PC(HPC)及其它小型电子设备使用的操作系统WinCE;诸多厂商宣布推出采用WinCE的手持PC设备,其中包括康柏、惠普、NEC、飞利浦、卡西欧,最近,微处理器巨头英特尔也宣布推出由StrongArm芯片为处理器采用WinCE的手持PC原型机。     

农田远程数据采集系统的设计与实现

讨论了一种农田远程数据采集系统,在农田数据采集现场采用基于Zigbee技术的无线传感网络节点作为采集终端,将作物生理、形态传感器以及环境传感器的数据通过无线传感节点采集并存储。数据中心通过INTERNET网、GPRS网与监测现场进行通讯,完成农田数据的记录、曲线显示、查询,同时数据中心可对现场检测设备远程操作。     

基于SimpliciTI协议的电源管理器的设计

为了方便地管理电器,降低待机能耗,提出了一种基于SimpliciTI协议无线传感器网络的电源管理方案.该方案采用射频芯片CC1110作为系统核心,结合外围极少的元件组成射频片上系统,拥有成本低、功耗小、可靠性高的特点.系统分为手持遥控设备和无线传感器网络两部分,手持遥控设备以S3 C2440微处理器为核心,负责与各节点的通信、电器状态的显示及接受远程控制;无线传感器网络各节点负责监测电器工作状态并将数据发送至手持设备,在待机和故障时及时做出动作.在系统安装时,为每个节点分别编码并进行自学习设置.实验表明,系统通信可靠,控制距离远,节省电能,使电器管理更为方便.     

基于ZIGBEE的环境监测预警系统网络节点的设计与实现

Zigbee作为新兴的无线通讯协议在国防军事、工业控制等方面得到大力发展。本文主要介绍基于Zigbee协议标准的环境监测预警系统中无线传感器节点的设计与实现。     

基于无线传感器网络的水情监测数据传输的设计

提出一种将基于Zigbee的无线传感器网络应用于水环境检测的系统,该系统将Zigbee网络与GPRS无线通信网络结合,在传感器终端,采用ZigBee无线传输系统,能够将多样化的测量变量进行收集。然后通过ZigBee网络传送到协调器节点,然后协调器节点通过GPRS模块发送,经过GPRS协议与TCP／IP协议转换,完成与Internet的连接,监控中心可以通过Internet网络进行信号的收集,完成数据的远程采集与传输过程。     

基于IrSock模式的红外通信方法的设计与实现

为了满足工作在嵌入式系统下的无线通信设备,譬如移动电话、掌上电脑和PDA等进行各种数据信息交流的需要,文中利用嵌入式开发工具eMbedded Visual C 4.0设计出一种基于IrSock模式进行红外通信的方法,最终实现在两台ETEN P300掌上电脑上通过红外收发器端口进行字符传送。由于Windows CE的APIs是Win32 APIs的子集,所以文中所设计的基于IrSock模式的红外通信的方法可以很方便地移植到带红外通信硬件的以Windows为操作系统的各种移动设备上。     

基于加速度传感器的建筑工地广域无线防盗系统

针对目前建筑工地上存在的建筑材料及机械设备频繁被盗事件,论文提出利用加速度传感器对各物体的振动进行监测,通过分析加速度信号的标准差对偷盗事件作出判断;结合Zigbee无线传感器网络和GPRS构建了以移动手持终端、本地和远程两级控制中心组成的广域无线分簇式监测网络。论文给出了详细的系统结构和软硬件设计。实验表明,系统可有效排除偶然扰动和周期扰动,无线网络传输稳定,准确性高。系统稍加改进即可应用于其他广域防盗监测环境中。     

Mobile agents in wireless devices

The networks that connect handheld wireless devices such as cell phones and PDAs suffer from low bandwidth and a high incidence of network errors. By employing mobile agents, such devices could provide a reliable technology for message transport over wireless links. Mobile agents are inherently distributed software entities that reduce the load on the network when they move. Mobile agents can be employed in wireless handheld devices in two ways: An agent platform could be installed on the device, enabling mobile agents to run directly on it, or devices could access and use remote mobile agents running on wired networks. Each approach is viable and has its own advantages and domain-specific applications. Some high-end devices would benefit from running a mobile agent platform that lets agents run locally, but this would not be beneficial to others because of processing power and memory constraints or for security reasons.     

To implement positive feedback adiabatic logic (PFAL)—NAND technique on low power Zigbee applications for processor applications

In recent years, field of Microprocessor and system world, where Zigbee is one of most important device for collect and transmitting the information from patient body and particular place to remote stations with efficient way. Power consumption is most important one for wireless devices. In present, most of the wireless devices are designed and developed by various design methodologies. Where logical system is complex for designing the wireless devices. In this paper, we propose a novel method of positive feedback adiabatic logic (PFAL) NAND technique for low power Zigbee applications for processor field. Here to implement positive feedback adiabatic logic – NAND technique on low power Zigbee applications is to be proposed. It employs the concept of adiabatic charge recovery. The circuit design has the less power consumption for the application of Zigbee low power mode this become critical concern. The adiabatic logic refers to a system in which a transition may occur without energy that is in the form of heat. It is the low power circuits which help to use reversible logic to conserve energy. The adiabatic circuits are operating on the principle of adiabatic charging and discharging process. It is to be used for partial energy recovery circuit and it has the lowest energy consumption which is compared to similar relatives. It is the best robustness which is against technological parameter variations.     

OPNET-based modeling and simulation of mobile Zigbee sensor networks

Modeling and simulation can help to validate and evaluate the performance of wireless sensor networks (WSNs) within specific applications. In order to resolve the issue of the restriction on node mobility in existing Zigbee WSN simulation models, this paper proposes a Zigbee compliant new simulation model using the OPNET simulator. Based on the Zigbee MAC layer model in OPNET Modeler, we develop a network layer model and propose an improved AODV routing algorithm to support node mobility, both of which are compatible with Zigbee protocols. We further present in details the structure of the network layer process model and the implementation procedures of its kernel functions. Comprehensive performance comparisons are performed between the proposed model and the Zigbee model in OPNET standard libraries. In order to evaluate the effectiveness of the proposed model in the aspect of node mobility support, time intervals between route failure occurrence and route recovery are measured as well. The experimental results show that the proposed simulation model achieves better performance, compared to the original one. In addition, when node mobility causes routing failures, alternative routes can be established quickly by the proposed model.     

基于Zigbee技术的起重机远程监控系统

为提高起重机安全监控的效率,文中给出了一种基于Zigbee无线通信技术的起重机智能远程监控系统。该系统将Zigbee无线通信技术与起重机监控技术相结合,采用三级式的网络分布策略,可实现不同用户对起重机工作状态的远程监控,并针对不同的现场环境给出了不同的通信方式,同时引入了超帧调度算法避免网络节点之间的信标帧冲突,保证了起重机监控器通信节点的网络同步。该系统CPU采用MC9S12DG128,使用CC2530实现Zigbee通信,实验证明对加强起重机安全有一定的作用。