基于Web和硬件可重构技术的远程抄表系统设计

Design of a Remote Reading System Based on Web and Hardware Reconfiguration Technologies

本文研究了当前常见的远程抄表系统的体系结构及实现技术,指出了这些系统之间的不兼容性和升级困难等问题,并在此基础上提出一种新的基于Web和硬件可重构技术的远程抄表系统结构。该系统采用标准公开的HTTP协议作为抄表程序与数据集中器的通信协议,从而解决系统之间的兼容性问题;同时利用硬件可重构技术和基于IP核的设计方法,在一个FPGA芯片上实现了抄表系统的关键部分———数据集中器,使系统能够灵活升级且不浪费已有硬件投资。此外,本文还对数据集中器的软硬件结构和设计方法、通信协议以及抄表中心批处理抄表程序进行了详细介绍。

This paper analyzes the architecture and implementation technologies of common remote meter reading systems, points out the incompatibility among them and the difficulty in upgrading, and then proposes a new system architecture based on Web and hardware reconfiguration technologies. It employs the open HTTP as the communication protocol between the meter reading program and the concentrator, which solves the compatibility problem. Hardware reconfiguration technologies and the IP-core-based design methodology are used to implement the concentrator, the most important part in this architecture, on a single FPGA chip, which makes it more flexible to be upgraded while saving the hardware investment. A detailed discussion is given on the software and hardware structures, the communication protocol and the batch meter reading program.