ZigBee无线网络与传输器深度探索 - CSDN文库

经典学习资料

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"ZigBee经典学习资料，包括国外原版书籍，适合深入学习ZigBee无线网络和收发器技术。" ZigBee是一种基于IEEE 802.15.4标准的低功耗、短距离无线通信技术，常用于物联网(IoT)设备间的通信。它在智能家居、工业自动化、医疗健康等领域有着广泛应用。《ZigBee Wireless Networks and Transceivers》这本书可能是深入理解ZigBee技术的关键资源。书中的内容可能涵盖了以下几个重要知识点： 1. **ZigBee标准**：解释ZigBee如何遵循IEEE 802.15.4标准，包括网络层、数据链路层和物理层的具体规范。物理层定义了传输速率、频率范围和调制方式等，而网络层则处理设备的连接、路由和网络管理。 2. **ZigBee网络架构**：介绍ZigBee网络的星型、网状和簇树型三种拓扑结构，以及它们各自的优点和应用场景。例如，星型网络适用于简单的一对多通信，而网状网络则能提供更好的网络覆盖和容错能力。 3. **ZigBee协议栈**：详述ZigBee协议栈的各个组成部分，如网络层的ZigBee网络协议(ZNP)、应用框架的ZigBee设备对象(ZDO)和ZigBee应用支持子层(ZAS)等。 4. **ZigBee设备角色**：包括协调器、路由器和终端设备的角色与功能。协调器负责创建和管理网络，路由器负责数据转发，终端设备则是网络中的数据源或接收点。 5. **ZigBee安全**：探讨ZigBee网络的加密机制，如AES-128加密，以及如何确保数据在传输过程中的安全性和隐私保护。 6. **ZigBee无线收发器**：详细讲解ZigBee无线模块的工作原理，包括射频(RF)设计、调制解调技术和能量检测等。可能会提到特定的ZigBee芯片，如Microchip Technology Inc.的产品，因为书中部分材料得到了Microchip的许可。 7. **应用案例**：通过实际案例分析ZigBee技术在智能家居、智能能源、资产追踪等领域的应用，帮助读者理解ZigBee技术的实际应用价值。 8. **开发和调试**：可能包含如何使用ZigBee开发工具和软件进行设备编程和网络调试，这对于实际项目开发非常有帮助。 9. **网络优化和故障排查**：讨论如何优化ZigBee网络性能，以及在遇到网络问题时的诊断和解决策略。《ZigBee Wireless Networks and Transceivers》这本书对于想要深入理解和掌握ZigBee技术的读者来说是一份宝贵的资源，无论你是初学者还是经验丰富的开发者，都能从中受益。

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Foreword

ZigBee

®

Wireless Technology is the leading global standard for implementing low-cost,

low-data-rate, short-range wireless networks with extended battery life. The ZigBee

Alliance is an association of companies working together to enable reliable, cost-

effective, low-power, wirelessly networked monitoring and control products based on an

open global standard. The specification documents released by the ZigBee Alliance and

IEEE 802.15 WPAN Working Group are the official sources for implementing ZigBee

and IEEE 802.15.4-based wireless networks. However, these lengthy documents can be

overwhelming for people with time constraints or technical backgrounds that are more

product-focused. Therefore, there is a need for a comprehensive resource that not only

contains the in-depth technical information but also provides high-level overviews of

the fundamentals of ZigBee wireless networking. This book, by Dr. Shahin Farahani,

addresses this need with a concise tutorial on ZigBee technology.

This book provides a complete picture of ZigBee wireless networking, from radio

frequency (RF) and Physical layer (PHY) considerations up to Application layer

development. The book is very well organized and the materials are easy to follow, with

well-balanced coverage of the protocol. In addition, Chapter 3 of this book contains the

frequently used IEEE 802.15.4 and ZigBee tables and frame formats and can act as a

quick reference for these standards.

This book serves as an introduction to IEEE 802.15.4, the ZigBee standard and its

applications. Just as important, the content is sufficiently thorough to provide deep

understanding of the practical considerations of implementing any size ZigBee wireless

network. For example, one of the more interesting potentials for the technology within

the “ intelligent RFID ” space is to allow the ability to estimate the location of objects

or personnel. Chapter 7 of this book is a good introduction to various approaches that

xviii Preface

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the fundamentals of the ZigBee and IEEE 802.15.4 standard are reviewed. Chapter 2 is

brief and provides a number of ZigBee wireless networking examples, including home

automation, consumer electronics, and healthcare.

Chapter 3 is a detailed description of IEEE 802.15.4 and ZigBee protocol layers,

including security features. This chapter acts as a summary of the IEEE 802.15.4 and

ZigBee standard documents. Chapter 3 provides information regarding the 2007 edition

of the ZigBee standard, whenever needed, along with the 2006 edition. Appendix D

summarizes some of the differences between ZigBee-Pro (2007) and ZigBee-2006. If the

level of detail in Chapter 3 exceeds your interest or background, you can skip that chapter

and continue with Chapter 4 as long as you have read Chapter 1.

Basic information regarding transceivers developed for the IEEE 802.15.4 standard is

provided in Chapter 4. An IEEE 802.15.4-compliant transceiver must meet specific

requirements outlined in the standard itself. This chapter helps in understanding these

requirements and in comparing and contrasting performance of various transceivers.

In a wireless sensor network (WSN), the sensor output is an analog signal and must

be converted to digital. The basics of analog-to-digital to converters (ADCs) and their

performance metrics are provided in Chapter 4.

Chapter 5 studies the effect of environment on a ZigBee wireless network. In reality,

the performance of a wireless network can be affected by the environment. Chapter 5

provides a number of techniques that can be used to mitigate performance degradation

due to environment. Range estimation and the methods that can be used to improve

the range are also covered in Chapter 5. The antenna can be designed specifically for

each application scenario and may greatly affect the performance of a wireless node.

Fundamental properties of antennas and some of the basic antenna shapes used in short-

range wireless networks are provided in Chapter 5. Regulatory requirements in North

America, Europe, and Japan are also reviewed in this chapter.

A battery-powered node developed for ZigBee wireless networking may operate for

several years before its battery must be replaced. The expected battery life depends on the

application scenario, and Chapter 6 provides a simple way of calculating the estimated

battery life. Battery life is not only a function of hardware-level performance of each

node but also depends on the operation efficiency of the network. Chapter 6 reviews both

hardware- and network-level battery life extension methods.

One of the applications of short-range wireless networking is estimating the location of

moving objects. Chapter 7 provides a number of methods that can be used for location

Preface xix

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estimation using a ZigBee network. In contrast to a global positioning system (GPS), the

short-range location-estimation methods rely solely on the information gathered locally

from other nearby nodes to estimate the location of a moving object.

ZigBee networks operate in an unlicensed band, shared by many other wireless networks

such as WiFi™ for wireless Internet access. Chapter 8 provides an introduction to a

coexistence mechanism and reviews some of the methods used in IEEE 802.15.4 wireless

networking to increase the robustness of the network to interferences. Chapter 9 reviews

some of alternative short-range wireless networking standards, including IPv6 over IEEE

802.15.4 and WirelessHART™. This book contains five appendices. The summary of

the differences between ZigBee-Pro/2007 and ZigBee-2006 is provided in appendix D.

Appendix E reviews the building blocks inside a transceiver using a tutorial approach.

Appendix E is not a prerequisite for Chapter 4.

Supplements

This book comes with a dedicated Website ( www.LearnZigBee.com ) instead of a

companion CD. The applications of short-range wireless networking are growing and

the associated standards and regulations may change over time. A dedicated Website for

the book allows us to provide up-to-date information to readers even after the book is

published. You can also post questions or comments on the LearnZigBee.com Website.

The content of the Website includes, but is not limited to, the following:

●

A simple spreadsheet (calculator) for range and battery life analysis

●

Links to useful tools and additional materials

●

Links to standard documents, including the latest versions of IEEE 802.15.4 and

ZigBee standards

●

Links to regulatory requirements documents, including FCC and ETSI

●

Links to related datasheets (e.g., IEEE 802.15.4 transceivers)

●

Additional references for short-range wireless networking

The simple spreadsheet (calculator) we mentioned was created based on the materials

discussed in this book. For example, you can use this spreadsheet to calculate the

expected battery life of a node or estimate the range improvement if an external power

amplifier (PA) is added to a node. Although the spreadsheet is simple and

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