本科学位论文-居民用电远程抄表系统设计.doc

摘 要 随着电网的信息化改造，传统人工抄表方式已经不能满足现在的抄表需求。居民用电远程抄表作为一种智能抄表方式，将逐渐替代原有的人工抄表。 远程抄表系统包括智能电能表设计和RS485通信方式设计。智能电表利用AT89S52单片机作为微控制器，并且加入电量采集模块、RS485通信模块、LCD显示模块、数据存储模块以及时钟模块。单片机利用I/O口模拟IIC总线，实现与存储模块的通信。运用单片机的串行口与上位机进行数据传输。RS485通信设计主要包括通信线路的架构和抗干扰保护设计，保证通信渠道稳定畅通。 设计出的居民用电远程抄表系统，能够分别累计不同时间段的总用电量。当断电时，数据可以存储到片外数据存储器中。可以将数据实时传送至上位机。 远程抄表系统实现了抄表过程的智能化，简化了抄表流程，提高了抄表精度，减少了人力资源的浪费。 关键字：AT89S52；远程抄表；RS485通信 ABSTRACT With the information technology of the grid, the traditional manual meter reading has been unable to meet the current meter reading needs. Residential electricity meter as an intelligent remote meter reading, will gradually replace the existing manual meter reading. Remote meter reading system includes a smart meter design and RS485 communication design. Smart meters use AT89S52 microcontroller as the microcontroller, and added power collection module, RS485 communication module, LCD display module, data storage module and a clock module. Use microcontroller I/O port simulation IIC bus to communicate with the memory module. Use SCM serial interface with the host computer for data transfer. RS485 communication architecture and design includes anti-jamming protection design communication lines, to ensure stable channels of communication open. Design of residential electricity remote meter reading system, capable of respectively the cumulative total electricity consumption in different periods. When a power failure, data can be stored off-chip data memory. Data can be transmitted in real time first bit machine. Remote meter reading system to achieve intelligent meter reading process, simplifying the process of meter reading, meter reading to improve the accuracy and reduce the waste of human resources. Key words：AT89S52；remote meter reading；RS485 communication 目录 1 绪论 1 1.1 课题背景与意义 1 1.2 设计的主要工作 1 1.3 本文各章主要安排 1 2 方案选择 3 2.1 设计要求 3 2.2 通信方式选择 3 2.2.1 电力线载波远程抄表系统 3 2.2.2 基于GPRS远程抄表系统 3 2.2.3 红外线通信方式 4 2.2.4 RS4