ZigBeeIEE802.15.4网络应用实例毕业论文外文翻译.doc

英文资料翻译 ZigBee/IEEE 802.15.4 Networking Examples ZigBee networking has a diverse range of applications, including but not limited to home automation, inventory tracking, and healthcare. This chapter reviews a number of the application scenarios in which ZigBee devices can increase efficiency and/or reduce cost. Full ZigBee protocol implementation has the advantage of reliable mesh networking capability. However, if the application is simple, it might be possible to implement only IEEE 802.15.4 layers. 2.1 Home Automation Home automation is one of the major application areas for ZigBee wireless networking. In this section, a number of these use cases are reviewed. The typical data rate in home automation is only 10Kbps. Figure 2.1 shows some of the possible ZigBee applications in a typical residential building. Most of the applications shown in Figure 2.1 are briefly reviewed in this chapter. 2.1.1 Security Systems A security system can consist of several sensors, including motion detectors, glass-break sensors, and security cameras. These devices need to communicate with the central security panel through either wire or a wireless network. ZigBee-based security systems simplify installing and upgrading security systems. Despite ZigBee’s low data rate, it is still possible to transfer images wirelessly with acceptable quality. For example, ZigBee has been used in a wireless camera system that records videos of visitors at a home’s front door and transmits them to a dedicated monitor inside the house. 2.1.2 Meter-Reading Systems Utility meters need to be read on a regular basis to generate utility bills. One way to do so is to read the meters manually at homeowners’ premises and enter the values into a database. A ZigBee-based automatic meter-reading (AMR) system can create self-forming wireless mesh networks across residential complexes that link meters with utilities’ corporate offices. AMR provides the opportunity to remotely monitor