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zigbee技术简介

zigbee技术简介

zigbee技术简介【正文】ZigBee是一种短距离无线通信技术,广泛应用于物联网、家庭自动化、工业自动化等领域。

它以低功耗、低复杂度和低数据传输速率为特点,是一种非常适合于传感器网络的通信协议。

ZigBee技术的出现源于对传统无线通信技术的不足之处的认识。

之前的无线通信技术大多对功耗要求较高,难以应用于需要长期运行的低功耗设备。

而ZigBee技术则专注于解决此类问题,使得各种传感器和移动设备能够通过无线网络进行低耗能的通信。

ZigBee技术采用了IEEE 802.15.4标准,利用2.4GHz频段进行通信。

这一频段已经被工业、科学和医疗(ISM)设备广泛使用,因此ZigBee能够与其他设备共享频谱,提高了通信的灵活性和可靠性。

ZigBee的网络结构非常简单灵活,可以根据应用的需求组成不同类型的网络。

它采用星型拓扑结构,其中一个设备充当协调器的角色,其他设备则作为终端节点进行通信。

这种结构使得网络的建立和维护非常方便,能够适应复杂环境中的通信需求。

另外,ZigBee还采用了分散式的时间频率分割多址(CSMA/CA)机制,用于协调网络中各个设备的通信。

这种机制能够有效减少冲突和碰撞,提高数据传输的可靠性和稳定性。

由于ZigBee技术的特点和优势,它在物联网领域得到了广泛的应用。

在家庭自动化中,ZigBee可用于实现智能家居控制系统,例如灯光控制、温度调节、安防监控等。

其低功耗和低复杂度的特点使得设备能够长时间运行,并且与其他无线设备无缝集成。

在工业自动化中,ZigBee技术也具备适应复杂环境的能力。

它可以用于监测温度、湿度、压力等参数,并将数据传输到上位机进行处理和分析。

同时,ZigBee技术的数据传输速率虽然不高,但足以满足大部分传感器网络的需求。

尽管ZigBee技术具有众多的优点,但也存在一些局限性。

由于其低数据传输速率,不适用于高带宽的应用场景。

此外,2.4GHz频段的使用会受到其他设备的干扰,造成通信质量下降。

ZigBee Wireless Networks and Transceivers中文翻译 第一章 ZigBee基础

ZigBee Wireless Networks and Transceivers中文翻译 第一章 ZigBee基础

由于国内暂时还没有该文献的中文版本,而ZigBee Wireless Networks and Transceivers又是ZigBee界的葵花宝典,为了自己更好的学习,所以决定将比较多的蛋疼的时间拿出来做点有意义的事,虽然翻译水平不是很高,但是在翻译的过程中肯定能得到进步,最关键的就是检验自己的毅力,看看能否坚持。

在这个过程中,如果还能帮到一些正在入门ZigBee的朋友那就更好了。

废话不多说,开始ZigBee Wireless Networks and TransceiversZigBee无线网络和收发器1第一章ZigBee基础本章主要介绍了短距离无线网络通信的ZigBee标准,本章的主要目的就是对ZigBee的基础特性进行一下简单的概述,包括它的网络拓扑、信道访问机制和每个协议层所扮演的角色,在后续章节中对本章所讨论的内容有详细的解释。

1.1 什么是ZigBee?ZigBee是为低数据速率、短距离无线网络通信定义的一系列通信协议标准。

基于ZigBee的无线设备工作在868MHZ, 915MHZ和2.4Z频带。

其最大数据速率是250Kbps. ZigBee技术主要针对以电池为电源的应用,这些应用对低数据速率、低成本、更长时间的电池寿命有较高的需求。

在一些ZigBee应用中,无线设备持续处于活动状态的时间是有限的,大部分时间无线设备是处于省电模式(也称休眠模式)的。

因此,ZigBee设备在电池需要更换以前能够工作数年以上。

ZigBee的其中一个应用就是室内病人监控。

例如,一个病人的血压,心率可以通过可穿戴设备测量出来,病人戴的ZigBee设备来周期性的收集血压等健康相关的信息,然后这些数据被无线传送到当地服务器,例如病人家中的一台个人电脑,电脑再对这些数据进行初始分析,最后重要的信息通过互联网被发送到病人的护士或者内科医生那里做进一步的分析。

另一个ZigBee的应用例子就是大型楼宇结构安全的监控。

Zigbee概述

Zigbee概述

第1节Zigbee的产生与发展2000年12月IEEE成立了IEEE802.15.4工作组。

这个工作组将致力于定义一种提供廉价的固定、便携或移动设备使用的极低复杂度、低成本、低功耗、低速率的无线技术。

ZigBee正是这种技术的商业化命名,在中国被译为"紫蜂",它与蓝牙相类似。

这个名字来源于蜂群使用的赖以生存和发展的通信方式,蜜蜂通过跳ZigZag形状的舞蹈来分享新发现的食物源的位置、距离和方向等信息。

简而言之,ZigBee就是一种便宜的,低功耗的近距离无线组网通讯技术。

2002年8月,ZigBee Alliance成立,由英国Invensys公司、日本三菱电气公司、美国摩托罗拉公司以及荷兰飞利浦半导体公司组成,如今已经吸引了上百家芯片公司、无线设备公司和开发商的加入。

Zigbee联盟负责制定网络及上层协议。

同时,IEEE802.15.4标准也引起了其他标准化组织的注意力,比如IEEE1451工作组正在考虑在IEEE802.15.4标准基础上实现无线传感网络。

第2节Zigbee的功能及其特点ZigBee技术是一种具有统一技术标准的短距离无线通信技术。

它是为低速率控制网络设计的标准无线网络协议,依据 IEEE802.15.4标准,在数千个微小的传感器之间相互协调实现通讯。

这些传感器只需要很少的能量,就能以接力的方式通过无线电波将数据从一个节点传到另一个节点,从而实现在全球2.4GHz免费频带范围内的高效、低速率的通讯功能。

而zigBee设备则具有能量检测和链路质量指示的功能,并采用了碰撞避免机制,以避免发送数据时产生数据冲突。

在网络安全方面,ZigBee设备采用了密钥长度为128位的加密算法,对所传输的数据信息进行加密处理,从而保证了数据传输时的高可靠性和安全性。

到目前为止,ZigBee技术在国外己经在家庭网络、控制网络和手机移动终端等领域有了一定的应用,但是现在由zigBee技术构成的网络都仅限于无线个域网拓扑结构,每个接入点所能接纳的传感器的节点数远远低于协议所规定的节点数,为了达到传感器网络密集覆盖的目的,就必须进行复杂的组网,这不但增加了网络的复杂性,而且还增加了网络整体的功耗和成本,传感器节点的寿命也将降低。

zigbee无线传感器网络英文文献

zigbee无线传感器网络英文文献

zigbee无线传感器网络英文文献兰州交通大学毕业设计(英文文献)Zigbee Wireless Sensor Network in Environmental MonitoringApplicationsI. ZIGBEE TECHNOLOGYZigbee is a wireless standard based on IEEE802.15.4 that was developed to address theunique needs of most wireless sensing and control applications. Technology is low cost, low power, a low data rate, highly reliable, highly secure wireless networking protocol targeted towards automation and remote control applications. It’s depicts two keyperformance characteristics – wireless radio range and data transmission rate of the wireless spectrum. Comparing to other wireless networking protocols such as Bluetooth, Wi-Fi, UWB and so on, shows excellent transmission ability in lower transmission rate and highly capacity of network.A. Zigbee FrameworkFramework is made up of a set of blocks called layers. Each layer performs a specificset of services for the layer above. As shown in Fig.1. The IEEE 802.15.4 standard definesthe two lower layers: the physical (PHY) layer and the medium access control (MAC) layer. The Alliance builds on this foundation by providingthe network and security layer and the framework for the application layer.Fig.1 FrameworkThe IEEE 802.15.4 has two PHY layers that operate in two separate frequency ranges: 868/915 MHz and 2.4GHz. Moreover, MAC sub-layer controls access to the radio channel using a CSMA-CA mechanism. Its responsibilities may also include transmitting beacon frames, synchronization, and providing a reliable transmission mechanism. B. Zigbee’s TopologyThe network layer supports star, tree, and mesh topologies, as shown in Fig.2. In a startopology, the network is controlled by one single device called coordinator. The coordinator1兰州交通大学毕业设计(英文文献)is responsible for initiating and maintaining the devices on the network. All other devices, known as end devices, directly communicate with the coordinator. In mesh and tree topologies, the coordinator is responsible for starting the network and for choosing certain key network parameters, but the network may be extended through the use ofrouters. In tree networks, routers move data and control messagesthrough the network using a hierarchical routing strategy. Mesh networks allow full peer-to-peer communication.Fig.2 Mesh topologiesFig.3 is a network model, it shows that supports both single-hopstar topology constructed with one coordinator in the center and the end devices, and mesh topology. In the network, the intelligent nodes are composed by Full Function Device (FFD) and Reduced Function Device (RFD). Only the FFN defines the full functionality and can become a network coordinator. Coordinator manages the network, it is to say that coordinator can start a network and allow other devices to join or leave it. Moreover, it can provide binding and address-table services, andsave messages until they can be delivered.Fig.3 Zigbee network model2兰州交通大学毕业设计(英文文献)II. THE GREENHOUSE ENVIRONMENTAL MONITORINGSYSTEM DESIGNTraditional agriculture only use machinery and equipment which isolating and no communicating ability. And farmers have to monitor crops’ growth by themselves. Even ifsome people use electrical devices, but most of them were restricted to simple communication between control computer and end devices like sensors instead of wire connection, which couldn’t be strictly defined as wireless sensor network. Therefore, bythrough using sensor networks and, agriculture could become more automation, more networking and smarter.In this project, we should deploy five kinds of sensors in the greenhouse basement. By through these deployed sensors, the parameters such as temperature in the greenhouse, soil temperature, dew point, humidity and light intensity can be detected real time. It is key to collect different parameters from all kinds of sensors. And in the greenhouse, monitoring the vegetables growing conditions is the top issue. Therefore, longer battery life and lower data rate and less complexity are very important. From the introduction about above, we know that meet the requirements for reliability, security, low costs and low power.A. System OverviewThe overview of Greenhouse environmental monitoring system, which is made up by one sink node (coordinator), many sensor nodes, workstation and database. Mote node and sensor node together composed of each collecting node. When sensors collect parameters real time, such as temperature in the greenhouse, soil temperature, dew point, humidity and light intensity, these data will be offered to A/D converter, then by through quantizing and encoding become the digital signal that is able to transmit by wireless sensor communicating node. Each wireless sensor communicating node has ability of transmitting, receiving function.In this WSN, sensor nodes deployed in the greenhouse, which can collect real time data and transmit data to sink node (Coordinator) by the way of multi-hop. Sink node complete the task of data analysis and data storage. Meanwhile, sink node is connected with GPRS/CDMA can provide remote control and data download service. In the monitoring and controlling room, by running greenhouse management software, the sink node can periodically receives the data from the wireless sensor nodes and displays them on monitors.3兰州交通大学毕业设计(英文文献)B. Node Hardware DesignSensor nodes are the basic units of WSN. The hardware platform is made up sensor nodes closely related to the specific application requirements. Therefore, the most important work is the nodes design which can perfect implement the function of detecting and transmissionas a WSN node, and perform its technology characteristics. Fig.4 shows the universal structure of the WSN nodes. Power module provides the necessary energy for the sensor nodes. Data collection module is used to receive and convert signals of sensors. Data processing and control module’s functions are node device control, task scheduling, and energy computing and so on. Communication module is used to senddata between nodes and frequency chosen and so on.Fig.4 Universal structure of the wsn nodesIn the data transfer unit, the module is embedded to match the MAC layer and the NET layer of the protocol. We choose CC2430 as the protocol chips, which integrated the CPU,RF transceiver, net protocol and the RAM together. CC2430 uses an 8 bit MCU (8051), andhas 128KB programmable flash memory and 8KB RAM. It also includesA/D converter, some Timers, AES128 Coprocessor, Watchdog Timer, 32K crystal Sleep mode Timer, Poweron Reset, Brown out Detection and 21 I/Os. Based on the chips, many modules for theprotocol are provided. And the transfer unit could be easily designed based on the modules.As an example of a sensor end device integrated temperature, humidity and light, the design is shown in Fig. 5.4兰州交通大学毕业设计(英文文献)Fig.5 The hardware design of a sensor nodeThe SHT11 is a single chip relative humidity and temperature multi sensor module comprising a calibrated digital output. It can test the soil temperature and humidity. The DS18B20 is a digital temperature sensor, which has 3 pins and data pin can link MSP430directly. It can detect temperature in greenhouse. The TCS320 is a digital light sensor.SHT11, DS18B20 and TCS320 are both digital sensors with small size and low powerconsumption. Other sensor nodes can be obtained by changing the sensors.The sensor nodes are powered from onboard batteries and the coordinator also allows to be powered from an external power supply determined by a jumper.C. Node Software DesignThe application system consists of a coordinator and several end devices. The general structure of the code in each is the same, with an initialization followed by a main loop.The software flow of coordinator, upon the coordinator being started, the first action of the application is the initialization of the hardware, liquid crystal, stack and application variables and openingthe interrupt. Then a network will be formatted. If this net has been formatted successfully, some network information, such as physical address, net ID, channel number will be shown on the LCD. Then program will step into application layer and monitor signal. If there is end device or router want to join in this net, LCD will shown this information, and show the physical address of applying node, and the coordinator will allocate a net address to this node. If the node has been joined in this network, the data transmitted by this node will be received by coordinator and shown in the LCD.The software flow of a sensor node, as each sensor node is switched on, it scans all5兰州交通大学毕业设计(英文文献)channels and, after seeing any beacons, checks that the coordinatoris the one that it is looking for. It then performs a synchronizationand association. Once association is complete, the sensor node enters a regular loop of reading its sensors and putting out a frame containing the sensor data. If sending successfully, end device will step into idle state; by contrast, it will collect data once again and send to coordinator until sending successfully.D. Greenhouse Monitoring Software DesignWe use VB language to build an interface for the test and this greenhouse sensor network software can be installed and launched on any Windows-based operating system. It has 4dialog box selections: setting controlling conditions, setting Timer, setting relevant parameters and showing current status. By setting some parameters, it can perform the functions of communicating with port,data collection and data viewing.6兰州交通大学毕业设计(英文文献)无线传感器网络在环境监测中的应用Zigbee技术I. Zigbee是一种基于802.15.4的无线标准上被开发用来满足大多数无线传感ZigbeeIEEE和控制应用的独特需求。

zigbee简介_pptZigBee是一组基于IEEE 802.15.4无线标准研制开发的,有关组网、安全和应用软件方面的技术,I

zigbee简介_pptZigBee是一组基于IEEE 802.15.4无线标准研制开发的,有关组网、安全和应用软件方面的技术,I

ZigBee和简单无线通讯之间 最大区别
• 简单的点到点,点到多点通讯(目前很多这样的 数传模块),包装结构比较简单,主要为同步序 言,数据,校验几部分组成。而ZigBee是采用数 据帧的概念,每个无线帧包括了大量无线包 装, 包含了大量时间,地址,命令,同步等信息,真 正的数据信息只占很少部分,而这正是ZigBee可 以实现网络组织管理,实现高可靠传输的关键。 • 同时,ZigBee采用了MAC技术和DSSS (直扩 序列调制)技术,能够实现高可靠,大规模网络 传输。
应用ZigBee可组成多种网络拓扑结构 最重要的是网状网络(Mesh)
ZigBee节点类型
节点工能介绍
• 1.协调器 • 上电启动和配置网络(例如设定网络标示符 ,选择信道), 一旦完成后相当于路由器功能。 • 2.路由器 • (1)允许其他网络设备加入 (2)多路跳由 (3)协助电池供电的子节点通信 (4)自己作为终端节点应用 3 终端节点 向路由节点传递数据,可选择睡眠与唤醒。 (路由因不断转发数据需电池供电,终端节点电池供电)
Zigbee是IEEE 802.15.4的扩展
• ZigBee不仅只是IEEE802.15.4的名字。 IEEE仅处理低级MAC层和物理层协议,而 ZigBee联盟对其网络层协议和API进行了 标准化。 • ZigBee联盟还开发了安全层。
Zigbee技术的表现形式
• 由各种软件代码,分层次 组成的软件协议栈。 • 代码分类:应用层, 应用安全层,网络层, MAC层等等。 • 代码形式:源代码和库文件。
协议栈核心—网络层
• ZigBee协议栈的核心部分在网络层。网络 层主要实现节点加入或离开网络、接收或 抛弃其他节点、路由查找以及传送数据等 功能,支持Cluster-Tree,AODVjr, Cluster-Tree+AODVjr等多种路由算法, 支持星形(Star)、树形(ClusterTree)、网格(Mesh)等多种拓扑结构

Zigbee

Zigbee

consist
central database Zigbee RF Vehicle tags RF tag Reader RF tag Writer. Zigbee:Microchip micro-controller PIC18F4620 RF tags:Chipcon CC2420 RF transceiver
Keywords
Intelligent Transportation Systems, ZigBee, Wireless Sensor Networks.
INTRODUCTION
The state of Qatar has been experiencing phenomenal growth. As a result, traffic is increasingly becoming a serious problem in Doha ITS adds information and communications technology to the transport infrastructure and vehicles to help manage traffic and improve safety, transportation times and fuel costs.
硬件实现
CC2420是Chipcon As公司推出的首款符 合2.4GHz IEEE802.15.4标准的射频收发 器。该器件包括众多额外功能,是第一款 适用于ZigBee产品的RF器件。
系统示意图
Methods
Outdoor wireless communication channels as used in this work are inherently unreliable and the effect of packet loss cannot be neglected. Here, the basic idea is to use arrival of packets as the only indicator for classifying nodes as being within or outside the gateway communication range. Packets disseminated by each sensor node contained the identification number (node ID) of the node. The packet arrival time was registered by the gateway and indicated the presence of the node within the communication range of the gateway at that time instant. In order to minimize misclassification due to packet loss in the presence of obstacles, a moving average window was applied to packet arrival sequence. An optimization problem was set up to find the optimal window length and the optimal threshold for classification.

Zigbee简介

Zigbee简介

Zigbee简介ZigBee(紫蜂)技术是一种低复杂度、低耗电、低数据传输速率、低成本、高可靠且便于组网的双向短距无线通讯技术。

早期曾被称“HomeRF Lite”、“RF- EasyLink”或“fireFly”无线电技术,现统称为ZigBee技术。

它是基于IEEE批准通过一个无线个人区域网标准研制开发的,主要适合用于自动控制和远程控制领域,可以嵌入各种设备。

ZigBee协议栈是基于IEEE802.15.4的无线网络标准的,将IEEE 802.15.4与ZigBee技术对比,IEEE802.15.4定义了物理层(PHY)和介质访问层(MAC),而ZigBee联盟则在IEEE 802.15.4的基础上定义了网络层(NWK)和应用层(API)。

其中,PHY层主要功能是启动和关闭无线收发器、信道选择、能量监测、链路质量监测、清除信道评估以及通过物理介质对数据包进行发送和接收。

MAC层是信标管理、行道接入、时隙管理、发送确认帧、发送连接及断开请求。

并且,MAC层还为应用合适的安全机制提供了一些方法。

网络层主要用于建立和维护网络连接。

它独立处理传入数据的请求、关联、解除关联和孤立通知请求。

应用层主要为ZigBee技术的实际应用提供一些应有框架模型等,以便对ZigBee技术进行开发应用。

ZigBee无线网络根据不同的需要可采用星状、串状、网状三种不同类型的网络配置,每种配置是由一个协调器(Coordinator)、多个路由器(Router)和多个终端设备节点(End device)组成。

Coordinator和Router均为实现了一组很多服务的全功能设备(Full Function Device,FFD),终端设备可以为FFD或简化功能设备(RFD)。

一个网络配置仅有一个唯一的协调器负责与所控制的子节点通信,汇集数据和管理发布控制,路由器主要起到通信路由和网络扩展的功能。

其中Coordinator节点是发起网络的,它等待着Router和End —device节点的加入。

ZigBee技术简介

ZigBee技术简介

①低功耗。在低耗电待机模式下,2 节 5 号干电池可支持 1 个节点工作 6~24 个月,甚至更长。这是 ZigBee 的突出优势。
②低成本。通过大幅简化协议(不到蓝牙的 1/10) ,降低了对通信控制器的要求,按预测分析,以 8051 的 8 位微控制器测算,全功能的主节点需要 32KB 代码,子功 能节点少至 4KB 代码,而且 ZigBee 免协议专利费。每块芯片的价格大约为 2 美元。
MAC Layer
IEEE 802.15.4
2.4GH
PHY Layer
868/915
Silicon
麓源电子科技有限公司
第5页
ZigBee Stack
Application

Lustech
四、 ZigBee 联盟
ZigBee 联盟是一个高速增长的非牟利业界组织, 制定网络、安全和应用软件层;提供不同产品的协调性及互通性测试规格;在世界各地推广 ZigBee 品牌并争取市场的关 注;管理技术的发展。ZigBee 联盟的主要目标是以透过加入无线网络功能,为消费者提供更富弹性、更易用的电子产片。ZigBee 技术能融入各类电子产品,应用范围横跨 全球民用、商用、公用及工业用等市场。生产商终于可以利用 ZigBee 这个标准化无线网络平台,设计简单、可靠、便宜又省电的各种产品。成员包括国际著名半导体生产 商、技术提供者、代工生产商以及最终使用者。成员正制定一个基于 IEEE802.15.4、可靠、高性价比、低功耗的网络应用规格。目前超过 200 家成员公司正积极进行 ZigBee 规格的制定工作。 当中包括 7 位推广委员, 半导体生产商、 无线技术供应商及代工生产商。 7 位推广委员分别为: Honeywell, Invensys, Mitsubishi, Motorola, Philips, Samsung。

zigbee技术简介

zigbee技术简介

zigbee技术简介第一篇:ZigBee技术简介ZigBee技术是一种基于IEEE 802.15.4标准的低功耗、短距离、无线网络技术,它可以支持广泛的应用场景,例如智能家居、智能城市、工业自动化、医疗保健等。

相比于传统的无线网络技术,如WiFi和蓝牙,ZigBee技术具有以下优势:1. 低功耗:ZigBee设备的电池寿命通常可以达到数月甚至数年,这使其非常适合那些无法方便更换电池的应用场景。

2. 短距离:ZigBee技术适用于局部网络,其通信距离通常在10-100米之间,这减少了通信延迟和能量损耗,同时也提高了通信安全性。

3. 开放标准:ZigBee技术是一个开放的标准,许多公司都可以使用相同的标准来开发和生产设备,这降低了开发成本和市场风险,同时也促进了设备互操作性。

ZigBee技术可以支持多种网络拓扑结构,包括星型、树型和网状结构,其中网状结构最为常见。

在网状结构中,所有设备都可以互相通信,这提高了网络的可扩展性和可靠性。

另外,ZigBee设备也可以进行自组网,这意味着设备可以自动加入网络,让用户部署和管理网络变得更加容易。

除了标准的ZigBee技术,还有一些衍生的协议和标准,例如ZigBee Pro、ZigBee IP、ZigBee Light Link等。

这些协议和标准可以满足不同的应用场景需求,例如ZigBee Pro主要用于工业自动化和安防系统,ZigBee IP用于IPv6网络,ZigBee Light Link用于智能家居照明控制。

总的来说,ZigBee技术是一种非常适合物联网应用的无线网络技术,它具有低功耗、短距离、开放标准等优势,可以帮助用户快速连接物联网设备,实现智能化控制和管理。

第二篇:ZigBee和蓝牙的区别ZigBee和蓝牙都是无线技术,它们之间有什么区别呢?以下是一些常见的区别:1. 适用场景不同蓝牙技术适用于需要高速传输和连接范围较小的场景,例如音频传输、手机、平板电脑和笔记本电脑等,它的通信距离通常在10米左右。

外文翻译英文文献中英版ZigBee:无线技术-低功耗传感器网络-2教案资料

外文翻译英文文献中英版ZigBee:无线技术-低功耗传感器网络-2教案资料

ZigBee:无线技术,低功耗传感器网络加里莱格美国东部时间2004年5月6日上午12:00技师(工程师)们在发掘无线传感器的潜在应用方面从未感到任何困难。

例如,在家庭安全系统方面,无线传感器相对于有线传感器更易安装。

而在有线传感器的装置通常占无线传感器安装的费用80%的工业环境方面同样正确(适用)。

而且相比于有线传感器的不切实际甚至是不肯能而言,无线传感器更具应用性。

虽然,无线传感器需要消耗更多能量,也就是说所需电池的数量会随之增加或改变过于频繁。

再加上对无线传感器由空气传送的数据可靠性的怀疑论,所以无线传感器看起来并不是那么吸引人。

一个低功率无线技术被称为ZigBee,它是无线传感器方程重写,但是。

一个安全的网络技术,对最近通过的IEEE 802.15.4无线标准(图1)的顶部游戏机,ZigBee的承诺,把无线传感器的一切从工厂自动化系统到家庭安全系统,消费电子产品。

与802.15.4的合作下,ZigBee提供具有电池寿命可比普通小型电池的长几年。

ZigBee设备预计也便宜,有人估计销售价格最终不到3美元每节点,。

由于价格低,他们应该是一个自然适应于在光线如无线交换机,无线自动调温器,烟雾探测器和家用产品。

(图1)虽然还没有正式的规范的ZigBee存在(由ZigBee联盟是一个贸易集团,批准应该在今年年底),但ZigBee的前景似乎一片光明。

技术研究公司In-Stat/MDR 在它所谓的“谨慎进取”的预测中预测,802.15.4节点和芯片销售将从今天基本上为零,增加到2010年的165万台。

不是所有这些单位都将与ZigBee结合,但大多数可能会。

世界研究公司预测的到2010年射频模块无线传感器出货量4.65亿美量,其中77%是ZigBee的相关。

从某种意义上说,ZigBee的光明前途在很大程度上是由于其较低的数据速率20 kbps到250 kbps的,用于取决于频段频率(图2),比标称1 Mbps的蓝牙和54的802.11g Mbps的Wi - Fi的技术。

Zigbee详细介绍

Zigbee详细介绍

Zigbee详细介绍在蓝牙技术的使用过程中,人们发现蓝牙技术尽管有许多优点,但仍存在许多缺陷。

对工业,家庭自动化控制和遥测遥控领域而言,蓝牙技术显得太复杂,功耗大,距离近,组网规模太小等,而工业自动化对无线通信的需求越来越强烈。

Zigbee是什么?Zigbee 是一个由可多到65000个无线数传模块组成的一个无线数传网络平台,十分类似现有的移动通信的CDMA网或GSM网,每一个Zigbee网络数传模块类似移动网络的一个基站,在整个网络范围内,它们之间可以进行相互通信;每个网络节点间的距离可以从标准的 75 米,到扩展后的几百米,甚至几公里;另外整个 Zigbee 网络还可以与现有的其它的各种网络连接。

例如,你可以通过互联网在北京监控云南某地的一个Zigbee 控制网络。

不同的是,Zigbee网络主要是为自动化控制数据传输而建立,而移动通信网主要是为语音通信而建立;每个移动基站价值一般都在百万元人民币以上,而每个Zigbee基站却不到1000元人民币;每个Zigbee网络节点不仅本身可以与监控对对象,例如传感器连接直接进行数据采集和监控,它还可以自动中转别的网络节点传过来的数据资料;除此之外,每一个Zigbee网络节FFD还可在自己信号覆盖的范围内,和多个不承担网络信息中转任务的孤立的子节点RFD 无线连接。

每个 Zigbee 网络节点(FFD 和 RFD)可以可支持多到31个的传感器和受控设备,每一个传感器和受控设备终可以有8种不同的接口方式。

可以采集和传输数字量和模拟量。

Zigbee技术的应用领域Zigbee技术的目标就是针对工业,家庭自动化,遥测遥控,汽车自动化、农业自动化和医疗护理等,例如灯光自动化控制,传感器的无线数据采集和监控、油田、电力、矿山和物流管理等应用领域。

另外它还可以对局部区域内移动目标:例如城市中的车辆进行定位。

通常,符合如下条件之一的应用,就可以考虑采用 Zigbee 技术做无线传输:1.需要数据采集或监控的网点多;2.要求传输的数据量不大,而要求设备成本低;3.要求数据传输可性高,安全性高;4.设备体积很小,不便放置较大的充电电池或者电源模块;5.电池供电;6.地形复杂,监测点多,需要较大的网络覆盖;7.现有移动网络的覆盖盲区;8.使用现存移动网络进行低数据量传输的遥测遥控系统。

ZigBee原理、技术和应用

ZigBee原理、技术和应用

ZigBee Mesh 网络
Slide Courtesy of
Source: /en/resources/#SlidePresentations
ZigBee Mesh 网络
Slide Courtesy of
Source: /en/resources/#SlidePresentations
Application / Profiles Application Framework Network / Security Layers MAC Layer PHY Layer ZigBeeTM
IEEE® STD 802.15.4
– Designed to supply the radio and protocol, allowing the designer to concentrate on the application and their customers’ needs
ZigBee – 应用领域
保安系統 大型空調系統 自動讀表系統 照明控制 門禁系統 電視 錄像機 DVD/CD 无线遙控器
樓宇自動化 電子消費產品
ቤተ መጻሕፍቲ ባይዱ
ZigBee
病人監護系統 健身監察系統
保健
简单有效的无线控制手段
電腦設備
資產监控管理 生產過程監控 環境及能源管理
工業自动控制 车辆监控
ZigBee – 应用
ZigBeePRO: Mesh & Many-to-One routing as a special case of Mesh
PHY layer
This standard provides 2 PHY options with frequency band as fundamental difference. 2.4 GHz band has worldwide availability and provides a transmission rate of 250 kb/s. The 868/915 MHz PHY specifies operation in the 868 MHz band in Europe and 915 MHz ISM band in the United States and offer data rates 20 kb/s and 40 kb/s respectively. Different transmission rates can be exploited to achieve a variety of different goals.

ZigBee概述

ZigBee概述
– Companies include semiconductor manufacturers, wireless IP providers, OEMs, and end users
• ZigBee's membership continues to grow as additional companies realize the market need for and benefits of standards-based interoperable wireless products
• Simple wire replacement • Direct Connection between devices • Limited communication
Point to Multi-Point Point to Multi-Point
• Centralized routing and control point • Examples include: Wi-Fi, GSM, Bluetooth • All data must flow through “base station”
– Node device database – Transaction table – Pairing table
Month Year
Copyright 2003 The ZigBee Alliance, Inc. 15
APPLICATION/PROFILES APPLICATION FRAMEWORK NETWORK/SECURTIY LAYERS MAC LAYER PHY LAYER Application ZigBee Platform Stack Silicon IEEE
Month Year

ZigBee技术介绍

ZigBee技术介绍

什么是ZigBee?Zigbee是 IEEE 802.15.4协议的代名词。

根据这个协议规定的技术是一种短距离、低功耗的无线通信技术。

这一名称来源于蜜蜂的八字舞,由于蜜蜂 (bee)是靠飞翔和“嗡嗡”(zig)地抖动翅膀的“舞蹈”来与同伴传递花粉所在方位信息,也就是说蜜蜂依靠这样的方式构成了群体中的通信网络。

其特点是近距离、低复杂度、自组织、低功耗、低数据速率、低成本。

主要适合用于自动控制和远程控制领域,可以嵌入各种设备。

简而言之,ZigBee就是一种便宜的,低功耗的近距离无线组网通讯技术。

Zigbee的起源Zigbee, 在中国被译为"紫蜂",它与蓝牙相类似.是一种新兴的短距离无线技术.用于传感控制应用(sensor and control).此想法在IEEE 802.15工作组中提出,于是成立了TG4工作组,并制定规范IEEE 802.15.4.2002年,zigbee Alliance成立.2004年,zigbee V1.0诞生.它是zigbee的第一个规范.但由于推出仓促,存在一些错误.2006年,推出zigbee 2006,比较完善.2007年底,zigbee PRO推出zigbee的底层技术基于 IEEE 802.15.4.物理层和MAC层直接引用了IEEE 802.15.4在蓝牙技术的使用过程中,人们发现蓝牙技术尽管有许多优点,但仍存在许多缺陷。

对工业,家庭自动化控制和工业遥测遥控领域而言,蓝牙技术显得太复杂,功耗大,距离近,组网规模太小等,而工业自动化,对无线数据通信的需求越来越强烈,而且,对于工业现场,这种无线数据传输必须是高可靠的,并能抵抗工业现场的各种电磁干扰。

因此,经过人们长期努力,Zigbee协议在2003年正式问世。

另外,Zigbee使用了在它之前所研究过的面向家庭网络的通信协议Home RF Lite。

长期以来,低价、低传输率、短距离、低功率的无线通讯市场一直存在着。

ZigBee中英文翻译 本科毕业设计

ZigBee中英文翻译 本科毕业设计

ZigBee: Wireless Technology for Low-Power Sensor Networks Technologists have never had trouble coming up with potential applications for wireless sensors. In a home security system, for example, wireless sensors would be much easier to install than sensors that need wiring. The same is true in industrial environments, where wiring typically accounts for 80% of the cost of sensor installations. And then there are applications for sensors where wiring isn't practical or even possible.The problem, though, is that most wireless sensors use too much power, which means that their batteries either have to be very large or get changed far too often. Add to that some skepticism about the reliability of sensor data that's sent through the air, and wireless sensors simply haven't looked very appealing.A low-power wireless technology called ZigBee is rewriting the wireless sensor equation, however. A secure network technology that rides on top of the recently ratified IEEE 802.15.4 radio standard (Figure 1), ZigBee promises to put wireless sensors in everything from factory automation systems to home security systems to consumer electronics. In conjunction with 802.15.4, ZigBee offers battery life of up to several years for common small batteries. ZigBee devices are also expected to be cheap, eventually selling for less than $3 per node by some estimates. With prices that low, they should be a natural fit even in household products like wireless light switches, wireless thermostats, and smoke detectors.Figure 1: ZigBee adds network, security, andapplication-services layers to the PHY and MAC layers of theIEEE 811.15.4 radioAlthough no formal specification for ZigBee yet exists (approval by the ZigBee Alliance, a trade group, should come late this year), the outlook for ZigBee appears bright. Technology research firm In-Stat/MDR, in what it calls a "cautious aggressive" forecast, predicts that sales of 802.15.4 nodes and chipsets will increase from essentially zero today to 165 million units by 2010. Not all of these units will be coupled with ZigBee, but most probably will be. Research firm ON World predicts shipments of 465 million wireless sensor RF modules by 2010, with 77% of them being ZigBee-related.In a sense, ZigBee's bright future is largely due to its low data rates—20 kbps to 250 kbps, depending on the frequency band used (Figure 2)—compared to a nominal 1 Mbps for Bluetooth and 54 Mbps for Wi-Fi's 802.11g technology. But ZigBee won'tbe sending email and large documents, as Wi-Fi does, or documents and audio, as Bluetooth does. For sending sensor readings, which are typically a few tens of bytes, high bandwidth isn't necessary, and ZigBee's low bandwidth helps it fulfill its goals of low power, low cost, and robustness.Figure 2: ZigBee's data rates range from 20 kbps to 250kbps, depending on the frequency usedBecause of ZigBee applications' low bandwidth requirements, a ZigBee node can sleep most of the time, thus saving battery power, and then wake up, send data quickly, and go back to sleep. And, because ZigBee can transition from sleep mode to active mode in 15 msec or less, even a sleeping node can achieve suitably low latency. Someone flipping a ZigBee-enabled wireless light switch, for example, would not be aware of a wake-up delay before the light turns on. In contrast, wake-up delays for Bluetooth are typically around three seconds.A big part of ZigBee's power savings come from the radio technology of 802.15.4, which itself was designed for low power. 802.15.4 uses DSSS (direct-sequence spread spectrum) technology, for example, because the alternative FHSS (frequency-hopping spread spectrum) would have used too much power just in keeping its frequency hops synchronized.ZigBee nodes, using 802.15.4, can communicate in any of several different ways, however, and some ways use more power than others. Consequently, ZigBee users can't necessarily implement a sensor network any way they choose and still expect the multiple-year battery life that is ZigBee's hallmark. In fact, some technologists who are planning very large networks of very small wireless sensors say that even ZigBee is too power hungry for their uses.A ZigBee network node can consume extra power, for example, if it tries to keep its transmissions from overlapping with other nodes' transmissions or with transmissions from other radio sources. The 802.15.4 radio used by ZigBee implements CSMA/CA (carrier sense multiple access collision avoidance) technology, and a ZigBee node that uses CSMA/CA is essentially taking a listen-before-talk approach to see if any radio traffic is already underway. But, as noted by Venkat Bahl, marketing vice president for sensor company Ember Corp. and vice chairman of the ZigBee Alliance, that's not a preferred approach. "Having to listen burns power," says Bahl, "and we don't like to do that."Another ZigBee and 802.15.4 communications option is the beacon mode, in which normally sleeping network slave nodes wake up periodically to receive a synchronizing "beacon" from the network's control node. But listening for a beaconwastes power, too, particularly because timing uncertainties force nodes to turn on early to avoid missing a beacon.In-Your-Face CommunicationTo save as much power as possible, ZigBee employs a talk-when-ready communication strategy, simply sending data when it has data ready to send and then waiting for an automatic acknowledgement. According to Bob Heile, who is chairman of both the ZigBee Alliance and IEEE 802.15, talk-when-ready is an "in-your-face" scheme, but one that's very power efficient. "We did an extensive analysis that led to the best power-saving strategy in various kinds of environments from quiet to noisy," Heile says. "We discovered that, hands down, we were better off just sending the packet and acknowledging it. If you don't get an ack, it just means you got clobbered, so send it again. You wind up having much better power management than if you listen and determine if it's quiet before you talk."Fortunately, this in-your-face strategy leads to very little RF interference. That's largely because ZigBee nodes have very low duty cycles, transmitting only occasionally and sending only small amounts of data. Other ZigBee nodes, as well as Wi-Fi and Bluetooth modules, can easily deal with such small, infrequent bursts. ZigBee's talk-when-ready scheme doesn't suit all purposes, however. For example, in a network of thousands of tiny sensors dropped into a war zone to monitor enemy troop movements, the power savings provided still might not be enough. With each network node sending data periodically—and with transmissions repeated numerous times through other nearby nodes of a mesh network configuration in order to reach a network controller—large numbers of packet collisions and retransmissions could waste power and significantly shorten sensor node battery life. If the sensor batteries are very small and power-limited, that's especially problematic.Although contention for airwave access isn't generally a problem for ZigBee, it can be. Sensor-network company Dust Networks, in fact, says contention issues are keeping the company from turning to ZigBee—for now, at least—even though Dust remains a member of the ZigBee Alliance. "Each ZigBee device needs to contend for airspace with its neighbors," says Dust director of product management Robert Shear, "so there's inevitably some contention and some inefficiency." To avoid ZigBee's access contention, Dust uses contention-free TDMA (time division multiple access) technology. ZigBee, through the 802.15.4 MAC layer, provides guaranteed time slots in a scheme that somewhat resembles TDMA, but only as part of an optional "superframe" that's more complex and less power-efficient than TDMA.ZigBee has still more power-saving tricks up its sleeve, however. For example, it reduces power consumption in ZigBee components by providing for power-saving reduced-function devices (RFDs) in addition to more capable full-function devices (FFDs). Each ZigBee network needs at least one FFD as a controller, but most network nodes can be RFDs (Figure 3). RFDs can talk only with FFDs, not to other RFDs, but they contain less circuitry than FFDs, and little or no power-consuming memory.Figure 3: ZigBee networks can contain as many as 65,536nodes in a variety of configurationsZigBee conserves still more power by reducing the need for associated processing. Simple 8-bit processors like an 8051 can handle ZigBee chores easily, and ZigBee protocol stacks occupy very little memory. An FFD stack, for example, needs about 32 kbytes, and an RFD stack needs only about 4 kbytes. Those numbers compare with about 250 kbytes for the far more complex Bluetooth technology.From ZigBee's relatively simple implementations, cost savings naturally accrue. RFDs, of course, reduce ZigBee component costs by omitting memory and other circuitry, and simple 8-bit processors and small protocol stacks help keep system costs down. Often, an application's main processor can easily bear the small additional load of ZigBee processing, making a separate processor for ZigBee functions unnecessary. But the main strategy for keeping ZigBee prices low is to have big markets and high volumes. The ZigBee Alliance, by making ZigBee an open standard and by vigorously promoting interoperability among ZigBee devices, expects that ZigBee will be very big in applications such as home and building automation. The alliance is currently working on interoperability procedures for those particular applications, which it expects to complete later this year along with ZigBee Specification 1.0.One reason for optimism about ZigBee adoption for home automation and security is its ease of use. ZigBee networks are self-forming, making it easy even for consumers to set them up. "In the residential space, there's no configuration involved," says the ZigBee Alliance's Heile. "You take something out of the box, put the batteries in, and maybe do something as simple as button-press security—bring two devices close together, push the buttons until the green lights come on, and you're done."ZigBee networks can also self-form in commercial and industrial settings, but professional installers will have tools that provide additional control, particularly for security. ZigBee security is flexible, says Heile, to give both consumer and professional users what they need. "You don't have to have 128-bit public-key encryption for a smoke detector," he says, "but if I'm in a high-rise office complex, that's exactly the level of security I'm going to have for my fluorescent light fixtures. If you're in a high-rise building on Fifth Avenue, you don't want someone going downthe street and turning your lights off."Proprietary CompetitionCompetition for ZigBee comes almost entirely from proprietary technologies. Sensor company Dust, as noted, is sticking with its own technology, and Ember, although pushing strongly into the ZigBee arena, plans to keep offering its proprietary EmberNet as well. In addition, Zensys is providing its Z-Wave technology to customers. Sylvania, for example, is already using Z-Wave for lighting control, while ZigBee systems remain at least several months away.By offering interoperability, however, ZigBee adds capabilities that proprietary products can't. For example, says Ember's Bahl, interoperability allows the ZigBee nodes of a lighting system to work with the ZigBee network of an HV AC system, or vice versa. "Philips Lighting is really excited about this," Bahl, says, "because it turns them from a ballast manufacturer into the infrastructure backbone of a building-automation system."Needless to say, many of the major semiconductor companies, and especially those that are big in embedded systems, are eagerly anticipating ZigBee's entry into mass markets. Freescale Semiconductor (until recently known as Motorola's Semiconductor Products Sector) is already providing ZigBee-ready technology to select customers. Other semiconductor companies, including AMI, Atmel, Microchip, Philips, and Renesas, are members of the ZigBee Alliance.ZigBee will likely be slow to penetrate the industrial market for wireless sensors, however. According to market research firm ON World, it will take five to seven years to convince industrial customers of the reliability, robustness, and security of wireless-sensor systems. ON World does predict significant long-term growth of ZigBee in industry, though. By 2010, the company projects, RF modules used in industrial monitoring and control will reach 165 million units, up from 1.9 million in 2004. About 75% of those, ON World predicts, will be based on ZigBee and 802.15.4. Eventually, ZigBee could go into a wide variety of applications. In household appliances, it could help monitor and control energy consumption. In automotive applications, it could provide tire-pressure monitoring and remote keyless entry. ZigBee could also be used in medical devices or even in computer peripherals, such as wireless keyboards or mice.Concern is increasing, though, that ZigBee could turn into a one-size-fits-all technology that doesn't fit any application particularly well. Some skeptics, for example, worry that an attempt to make ZigBee all-encompassing could make the ZigBee protocol stack too large for ZigBee's twin goals of very low power consumption and very low cost. If that happens, then ZigBee's low-power, low-data-rate niche—narrow as it is—will have proven to be too broad. And then, perhaps, we'll need yet another wireless standard to go with the burgeoning number we already have.ZigBee:无线技术,低功耗传感器网络技师(工程师)们在发掘无线传感器的潜在应用方面从未感到任何困难。

ZigBee简介

ZigBee简介

1.概述:ZigBee译为"紫蜂",它与蓝牙相类似,是一种新兴的短距离无线通信技术,用于传感控制应用(Sensor and Control)。

Zigbee是基于IEEE802.15.4标准的低功耗个域网协议,根据这个协议规定的技术是一种短距离、低功耗的无线通信技术。

ZigBee这一名称来源于蜜蜂的八字舞,由于蜜蜂(bee)是靠飞翔和“嗡嗡”(zig)地抖动翅膀的“舞蹈”来与同伴传递花粉所在方位信息,也就是说蜜蜂依靠这样的方式构成了群体中的通信网络。

2.ZigBee发展历程:在蓝牙技术的使用过程中,人们发现蓝牙技术尽管有许多优点,但仍存在许多缺陷。

对工业,家庭自动化控制和遥测遥控领域而言,蓝牙技术显得太复杂,功耗大,距离近,组网规模太小等,而工业自动化对无线通信的需求越来越强烈。

2000年12月,IEEE成立了802.15.4工作组,制定了Zigbee的物理层(PHY)和MAC协议层。

2001年8月,ZigBee Alliance成立。

2002年下半年,英国Invensys公司、日本三菱电气公司、美国摩托罗拉公司以及荷兰飞利浦半导体公司共同宣布加入ZigBee联盟,研发名为“ZigBee”的下一代无线通信标准,这一事件成为该技术发展过程中的里程碑。

2004年,ZigBee V1.0诞生。

它是Zigbee规范的第一个版本。

由于推出仓促,存在一些错误。

2006年,推出ZigBee 2006,比较完善。

2007年底,ZigBee PRO推出。

2009年3月,Zigbee RF4CE推出,具备更强的灵活性和远程控制能力。

2009年开始,Zigbee采用了IETF的IPv6 6Lowpan标准作为新一代智能电网Smart Energy(SEP 2.0)的标准,致力于形成全球统一的易于与互联网集成的网络,实现端到端的网络通信。

ZigBee联盟现有的理事公司包括BM Group,Ember公司,飞思卡尔半导体,Honeywell,三菱电机,摩托罗拉,飞利浦,三星电子,西门子,及德州仪器。

Zigbee的介绍

Zigbee的介绍
gBee/IEEE 802.15.4主要应用于需要较低的资 料传输率的领域,相比于其他的无线通信技术, ZigBee/IEEE 802.15.4有以下一些优势:
• • • • • • • • • • ·低功耗 ·低成本 ·自组织 ·灵活,可靠并具备自愈功能 ·支持大量节点 ·配置快速便捷 ·使用安全 ·可以全球使用 ·产品相互相容 ·生产商互相独立
Zigbee的概念
ZigBee介绍
• ZigBee,这个名字来 源于蜂群使用的赖以 生存和发展的通信方 式:蜜蜂通过跳 ZigZag 形状的舞蹈来 分享新发现的食物源 的位置,距离和方向 等资讯。
ZigBee介绍
• ZigBee 是一种开放式的基于IEEE 802.15.4协 定的无线个人局域网(Wireless Personal Area Networks)标准。 IEEE 802.15.4定义了物理层 和媒体接入控制层,而ZigBee则定义了更高 层如网路层及应用层等。
ZigBee和其他两大主要无线网络科技的比较
ZigBee的应用范围
• ZigBee可以广泛的应用到 楼宇自动化,工业,医疗 及住宅的控制和监测以及 以下领域:
• • • • • • • • • • ·设备管理 ·灯光控制 ·自动抄表 ·无线烟雾及一氧化碳探测器 ·空调及通风设备控制 ·家居控制,如防入侵感测器, 玻璃破碎探测器,噪音探测器 等 ·环境控制 ·医疗监测 ·远程家居控制 ·工业及楼宇自动化
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BUILDING AUTOMATION
TV VCR DVD/CD Universal Remotes
Patient monitoring Fitness monitoring
PERSONAL HEALTH CARE TELECOM SERVICES
PC & PERIPHERALS
Mouse Keyboard Joystick
Open Day
14 – 16 October 2010, Barcelona
©2009 ZigBee Alliance. All rights reserved.
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ห้องสมุดไป่ตู้
The Role of Communications in a Smart World
Make data and information securely and readily available anytime anywhere cost effectively for both people and systems Enable systems and environments to adapt to achieve optimal performance Enable environments to tailor themselves to individual preferences Specific requirements vary dramatically from high bandwidth multi-media and large file transfer to low data rate sensor and control applications (aka M2M) Focus here is on the M2M challenge and opportunity.
©2010 ZigBee Alliance. All rights reserved.
3
Enabling the “Internet of Things”
The M2M Network is the basis of the “Internet of Things” While wired networks are important elements, wireless networks are the only way to achieve the cost targets and hence breadth of coverage for a true “Internet of Things” Applications span the gamut from automation to telecom and healthcare and everything in between ZigBee IS the “Internet of Things” and it is happening now not tomorrow
Rooftop Solar
provides renewable energy coincident with peak demand
©2010 ZigBee Alliance. All rights reserved.
2
The Challenge of M2M Communications
M2M Communications is not only about enabling the flow of data between machines and but also between people and machines. Regardless of the type of machine or data, information usually flows in the same general way
9 9
Reliability and security
– Improved measurement and control – Risk-based methodology
Source: George Arnold, NIST
©2010 ZigBee Alliance. All rights reserved.
Load
– Reduce peaking – Energy management – Plug in vehicles
Requires…
– Automated management, operation, control – 2-way flow of power and information – Interoperability at many levels – Standards
ZigBee Smart Energy & Home Automation
Urgent demand for Smart Energy + compatibility with mainstream Home Automation systems enables customer choice
Utility AMI Utility AMI Network Network
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©2010 ZigBee Alliance. All rights reserved.
ZigBee Declared “Mainstream Technology”
“Our research with more than 600 companies has found that the ZigBee market has "crossed the chasm" and is now a mainstream technology. This is further illustrated by several new ZigBee entrants such as BlueRadios, CEL, and SyChip (Murata), as well wireless sensor network pioneer Dust Networks. We have identified over 350 companies that offer, or are developing, products based on IEEE802.15.4 and ZigBee. These companies have combined annual revenues of more than $1 trillion. In fact, despite a challenging economy,15.4/ZigBee unit sales have increased at an average of 62% per year since 2007.”
The Internet of Things: How ZigBee Gives Voice to the Machines
Zhongguancun Forum 2010
October 20, 2010 Bob Heile Chairman, ZigBee Alliance Industrial
©2010 ZigBee Alliance. All rights reserved.
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ZigBee Alliance Overview
Organized as an independent, neutral, nonprofit corporation in 2002 for Wireless Sensor Network Standards Development Open and global
- Market Dynamics Report, electronics publications
©2010 ZigBee Alliance. All rights reserved.
7
How ZigBee Enables the Internet of Things
ZigBee Home Automation (ZHA) ZigBee Smart Energy (ZSE) ZigBee Building Automation (CBA) ZigBee Health Care (ZHC) ZigBee Telecom Services (ZTS) ZigBee Retail Services (ZRS) ZigBee Remote Control (ZRC)
5
Typical ZigBee Markets
Security HVAC AMR Lighting Control Access Control Demand Response Net Metering AMI, SCADA
ENERGY MGT. & EFFICIENCY
CONSUMER ELECTRONICS
Mobile Phone
©2010 ZigBee Alliance. All rights reserved.
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Where ZigBee Fits
Programmable Communicating Thermostats
respond to pricing signals and grid disturbances
+Future profiles proposed by member companies…
©2010 ZigBee Alliance. All rights reserved.
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Drivers for the Smart Grid
Achieving Changes in… Generation
– – – – Renewables Variability Storage Distributed resources
Asset Mgt Process Control Environmental Energy Mgt
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