Hybrid Distributed Stochastic Addressing Scheme for ZigBee/IEEE 802.15.4 Wireless Sensor Networks

This paper proposes hybrid distributed stochastic addressing (HDSA), which combines the advantages of distributed addressing and stochastic addressing, to solve the problems encountered when constructing a network in a ZigBee‐based wireless sensor network. HDSA can assign all the addresses for ZigBee beyond the limit of addresses assigned by the existing distributed address assignment mechanism. Thus, it can make the network scalable and can also utilize the advantages of tree routing. The simulation results reveal that HDSA has better addressing performance than distributed addressing and better routing performance than other on‐demand routing methods.     

基于IEEE 802.15.4的无线传感器网络的设计与实现

利用基于IEEE 802.15.4的IP-Link1200模块,设计并实现了能够实时接入现有蜂窝网络的无线传感器网络的验证系统。该方案工作于900 MHz或1 800 MHz的GSM(全球移动通信系统)网络的SMS(短消息业务)平台,把从目标区域采集到的温湿度参数传送给位于远程的任务管理中心。用户只需用普通的支持短消息的手机,向任务管理中心发送固定格式的短消息,就可以实时地获得任意一指定节点的温湿度参数。另外,也可以通过Internet打印历史报表。     

基于ZigBee技术的无线传感器网络构建与应用

对新的短距离、低速率无线网络技术Z igBee及其相关标准IEEE 802.15.4进行了分析和研究,着重探讨了基于Z igBee的无线传感器网络构建和ZigBee网络的应用,研究利用Siemens、旭昂等公司的通信模块和MSP430微控制器构建基于ZigBee技术的无线传感器网络,在GSM(全球移动通信系统)网络、CDMA(码分多址)网络或者以太网中实现大范围内的数据的传输与控制,达到更广泛的工业应用的目的。     

基于ZigBee/IEEE 802.15.4的低成本辅助驾驶系统

本文提出一个完整的基于ZigBee的驾驶辅助系统解决方案,该方案充分利用了具有低成本、低功耗和安全无线网络功能等特性的ZigBee协议。     

基于ZigBee的无线网络技术及应用

ZigBee是一组基于IEEE批准通过的802.15.4无线标准研制开发的组网、安全和应用软件方面的技术标准.首先介绍了ZigBee技术的概念、特点及协议框架,在此基础上探讨了ZigBee技术的应用,最后对其发展趋势做了展望.     

对无线传感器网络寻址方式的研究

寻址方式是影响WSN(无线传感器网络)工作效率的重要因素,如何根据WSN的业务特点,设计低开销、低存储、低计算复杂度的高效寻址方式,是值得深入研究解决的问题.本文在深入分析WSN一般业务类型和寻址特点的基础上,重点对当前WSN中的一些主要寻址方式做了系统、深入的分析,并得出了几点重要结论.     

基于ZigBee技术的无线传感器网络构建与应用

本文对国际上新出现的短距离、低速率无线网络技术ZigBee及其相关标准IEEE802．15.4进行了分析和研究．着重探讨了基于ZigBee的无线传感器网络（WSN）构建和ZigBec网络的应用。     

基于802.15.4/ZigBee无线传感器网络节点的物理层设计

无线传感网络和ZigBee都是目前研究的热门对象.本文简要介绍了基于IEEE 802.15.4/ZigBee的无线传感网络的主要优势,重点介绍了基于IEEE 802.15.4/ZigBee的传感器节点模型以及可供选择的几款传输模块芯片,并给出了一个实际的节点设计方案.     

On the Use of IEEE Std. 802.15.4 to Enable Wireless Sensor Networks in Building Automation

IEEE 802.15.4 is a new standard that addresses the need of low-rate wireless personal area networks or LR-WPAN with a focus on enabling pervasive wireless sensor networks for residential, commercial and industrial applications. The standard is characterized by maintaining a high level of simplicity, allowing for low cost and low power implementations. This paper presents a brief technical introduction of the IEEE 802.15.4 standard and analyzes its applicability for building automation applications.

ZigBee和6LowPan--基于IEEE 802.15.4的两种新技术

IEEE 802.15.4是一种新兴的低速率、短距离无线标准,基于它可以产生许多令人激动不已的新技术.其中,ZigBee和6LowPan就是典型的代表.在详细分析了IEEE 802.15.4标准、ZigBee和6LowPan这两种新技术各自的特点之后,重点介绍了这两种技术互联互通时需要考虑的因素,并探讨了两种可行的互通方案.最后,还对这两种技术在工业、家庭及办公自动化等领域的应用前景做了分析和展望,指出二者的融合是一个必然的趋势.     

Wireless Communication over ZigBee for Automotive Inclination Measurement

With the ongoing development of microsystem technologies,sensors become smaller and smarter.ZigBee is a low rate and low power WPAN for short range communication,which is particularly aimed at sensing and control applications.Measured data from many sensors can be read via ZigBee wireless communication for monitoring.Related actors might be driven via ZigBee as well.In this paper,a microcontroller HCS08 from Freescale gathers the inclination sensor's data through interface adaptation.And then the MCU contro...     

Performance evaluation of IEEE 802.15.4 sensor networks in industrial applications

Wireless sensor networks have been widely applied in industrial applications especially since the release of IEEE 802.15.4 standard. By participating in an automobile project in which an IEEE 802.15.4 based sensor and actuator network is deployed to measure and control the vibrations of an automotive system, we need to study many metrics of IEEE 802.15.4 sensor networks (e.g., packet delivery rate, latency, and energy consumption) under various sampling rates. In order to provide detailed modeling of hardware and software as well as network behaviors on each sensor node, we conduct plenty of experiments on a SystemC‐based wireless sensor networks simulator IDEA1, which supports the hardware and software co‐simulation of sensor nodes with certain flexibility of abstraction level. Compared with the existing works on performance evaluation of IEEE 802.15.4 protocols, the main contributions of this paper are the comprehensive studies of both beacon‐enabled and nonbeacon‐enabled modes under various parameter settings and the beacon tracking synchronization mechanism in the IEEE 802.15.4 standard, which is ignored in most previous works. Additionally, the in‐depth analysis of simulation results enables us to find the best parameter configurations to different traffic loads and application requirements, which can be used as general experiences for other applications.Copyright © 2014 John Wiley & Sons, Ltd.     

能量感知路由协议在无线传感器网络中的应用与研究

本文主要围绕ZigBee协议中的能量感知路由协议进行分析和研究,重点分析和探讨了能量路由原理,能量多路径路由原理。在此基础上文中针对能量多路径路由协议提出了一种简单完整的处理方法。     

A WiSN node SoC with real-time image compressor and IEEE 802.15.4 MAC accelerator

This article presents a wireless image sensor node SoC (system-on-a-chip) for low-power wireless image sensor network (WiSN), in which camera chip interface, high-quality image compression and IEEE 802.15.4 compliant acceleration modules are integrated on chip. The proposed SoC contains a hardware-implemented real-time lossless JPEG (JPEG-LS) compression engine for Bayer Color Filter Arrays (Bayer CFA), reaching a 3.5 bits/pixel with peak signal to noise ratio (PSNR) greater than 46.3 dB and achieving a maximum 5 frames/s @16 MHz for VGA (640 × 480) colour images. The proposed hardware accelerator for IEEE 802.15.4 media access control (MAC) layer covers crucial protocol defined functions and algorithms, and reduces 45% software code in the host processor. This SoC has been fabricated in UMC 0.18 µm 1P6M CMOS process. The average power of the prototype chip is 18.2 mW at 3.0 V power supply and 16 MHz clock rate.     

一种针对IEEE 802.15.4a网络监听仪的设计

针对最新国际标准IEEE802.15.4a的工业无线网络环境,提出了一种应用于该网络的监听仪(即sniffer)。首先介绍了它的工作原理,并与传统网络中监听仪作简要对比;其次设计了系统的软硬件结构;最后该监听仪在基于IEEE802.15.4a标准平台的CSMA/CA协议和WICN-Z协议的无线传感器网络中实现了对节点之间数据的嗅探监听,经实验测试,结果表明:监听仪能有效检测网络的运行状态。     

Cross-layer network formation for energy-efficient IEEE 802.15.4/ZigBee Wireless Sensor Networks

In IEEE 802.15.4/ZigBee Wireless Sensor Networks (WSNs) a specific node (called the PAN coordinator or sink) controls the whole network. When the network operates in a multi-hop fashion, the position of the PAN coordinator has a significant impact on the performance: it strongly affects network energy consumption for both topology formation and data routing. The development of efficient self-managing, self-configuring and self-regulating protocols for the election of the node that coordinates and manages the IEEE 802.15.4/ZigBee WSN is still an open research issue. In this paper we present a cross-layer approach to address the problem of PAN coordinator election on topologies formed in accordance with the IEEE 802.15.4. Our solution combines the network formation procedure defined at the MAC layer by the IEEE 802.15.4 standard with a topology reconfiguration algorithm operating at the network layer. We propose a standard-compliant procedure (named PAN coordinator ELection – PANEL) to self-configure a IEEE 802.15.4/ZigBee WSN by electing, in a distributed way, a suitable PAN coordinator. A protocol implementing this solution in IEEE 802.15.4 is also provided. Performance results show that our cross-layer approach minimizes the average number of hops between the nodes of the network and the PAN coordinator allowing to reduce the data transfer delay and determining significant energy savings compared with the performance of the IEEE 802.15.4 standard.     

无线传感器网络功率自适应研究

在一些随机组网的应用场合,一方面要求每个传感器节点的数据必须被准确获得,另一方面又很难保证节点间的分布距离都在通讯距离范围内,这种情况下直接使用基于IEEE802.15.4协议的无线传感器网络存在问题。针对该问题,提出了一种功率自适应传感器网络解决方案,包括功率自适应协议及其软硬件实现方案。基于该方案,利用Crossbow公司的MICAz节点构建了一个通信距离自适应、低功耗、高可靠性的传感器网络,并进行了实际测试与验证。     

基于ZigBee技术的电解质分析仪的设计

本文采用TI公司生产的CC2530片上系统,使用ZigBee无线传感器网络协议,设计了基于ZigBee无线传感器网络协议的电解质分析仪,满足了远距离、大范围溶液离子浓度检测的需求。该系统以CC2530片上系统作为采集模块和接收模块的控制芯片,通过上位机软件控制整个系统的采集、发送和接收。上位机通过RS232串口与数据接收模块通信。上位机软件主要基于Ncurses系统库开发,运行在Linux操作系统环境下。主要介绍了电解质分析仪的硬件设计原理和软件流程,并给出了实验结果。     

Design of electrolyte analyzer using ZigBee technology

本文采用TI公司生产的CC2530片上系统,使用ZigBee无线传感器网络协议,设计了基于zigBee无线传感器网络协议的电解质分析仪,满足了远距离、大范围溶液离子浓度检测的需求。该系统以CC2530片上系统作为采集模块和接收模块的控制芯片,通过上位机软件控制整个系统的采集、发送和接收。上位机通过RS232串口与数据接收模块通信。上位机软件主要基于Ncurses系统库开发,运行在Linux操作系统环境下。主要介绍了电解质分析仪的硬件设计原理和软件流程,并给出了实验结果。