【正文】 l information remotely. Consider a patient who is staying at his home but for whom it is important that his physician monitor his heart rate and blood pressure continuously. In this system, an IEEE work can be used to collect data from various sensors connected to the patient. The standard uses 128bit Advanced Encryption Standard (AES) technology to securely transfer data between ZigBee devices and other works. Figure is a simplified diagram of a remote monitoring system. A patient wears a ZigBee device that interfaces with a sensor, such as a blood pressure sensor, that gathers the information on a periodic basis. Then this information is transmitted to a ZigBee gateway. A ZigBee gateway provides the interface between a ZigBee work and other works, such as an Inter Protocol (IP) work. The patient information is then transmitted over the Inter to a personal puter that the physician or nurse uses to monitor the patient. This system could help hospitals improve patient care and relieve hospital overcrowding by enabling them to monitor patients at home. Other Applications Hotel Guest Room Access ZigBeebased systems can replace the magic key card systems used in hotels to access guest rooms. The traditional room access plastic cards have a magic strip on their back。中文 3480 字 英文資料翻譯 ZigBee/IEEE Networking Examples ZigBee working 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 working capability. However, if the application is simple, it might be possible to implement only IEEE layers. Home Automation Home automation is one of the major application areas for ZigBee wireless working. In this section, a number of these use cases are reviewed. The typical data rate in home automation is only 10Kbps. Figure shows some of the possible ZigBee applications in a typical residential building. Most of the applications shown in Figure are briefly reviewed in this chapter. Security Systems A security system can consist of several sensors, including motion detectors, glassbreak sensors, and security cameras. These devices need to municate with the central security panel through either wire or a wireless work. ZigBeebased 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. MeterReading 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 ZigBeebased automatic meterreading (AMR) system can create selfforming wireless mesh works across residential plexes that link meters with utilities’ corporate offices. AMR provides the opportunity to remotely monitor a residence’s electric, gas, and water usage and eliminate the need for a human visiting each resid