摘要
网络供电是EPA的关键技术之一,简要介绍了IEEE802.3af标准,系统分析了以太网供电设备的功能需求和总体设计,选用MSP430F148单片机和TPS2383A以太网供电电源管理器,基于I2C-BUS通信规范,开发了符合IEEE802.3af标准的以太网供电设备,着重论述了该以太网供电设备的软件实现过程,最后给出了该供电设备在EPA系统中的应用实例,具有良好的使用效果。
Power over Ethernet is one of the key technologies in EPA system. In this paper, the standard IEEE802.3af was briefly introduced, and the function demands and the collective design were described. Based on 12 C-BUS criterion, the authors adopted MSP430 MCU and TPS2383APSEPM to design PSE complying with IEEE802.3af standard. The methods of software design were emphasized in this thesis. Finally, an application example of this device used in EPA system was given, and it runs in high efficiency.
出处
《重庆邮电学院学报（自然科学版）》
2006年第5期665-668,共4页
Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)
基金
国家"863"计划项目资助(2004AA412020)
