手持式无线智能抄表系统的设计与实现

随着电子产业的逐步发展及人们生活水平的不断提高，密集的居住区为手持式智能抄表系统的推广提供了必要条件。本文介绍了手持式智能抄表系统在国内外的发展状况后，针对人们最常用的单相电子式电能表设计手持式无线智能抄表系统。

本文首先针对课题进行研究后确定研究方案及软硬件设备，硬件电路包括电表电路和抄表电路两部分；两部分电路主要包括数据采集、红外通讯、数码管显示、键盘、存储、串口六大模块。根据整体方案对各个模块的功能进行介绍及对硬件电路进行原理图设计和PCB板设计。软件主要应用Altium Designer进行PCB板制作和Keil C软件进行程序编写。

本方案用STC89C52单片机作为主控单元，对其针对各个功能分别进行串口扩充。电表电路与抄表电路之间应用ZiLOG公司的ZHX1010芯片进行数据传输。实现了数据之间传输无线化，而且大大提高了工作效率。本设计具有使用方便、适应性强、操作简单的优点。相信今后无线化及小型化的抄表系统将逐步推广。

关键字：智能抄表 电表电路 STC89C52 红外通讯

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ABSTRACT

With the development of the electronic industry and people's improving living standards, it is necessary for the intensive residential area to promote hand-held intelligent meter reading system. The development of this system is described in the article, including domestic and overseas. Moreover, we will discuss the most commonly used handheld wireless intelligent meter reading system which is designed by the single-phase electronic energy meter.

After the discussing of this issue, the research programs and the devices of hardware and software are determined. The hardware circuits are composed of two parts, including meter circuit and reading meter circuit; two parts of the circuit include six modules, which is data acquisition, infrared data association, LED digital display, keyboard, memory, serials . According to the overall program, the function of each module is described and schematic of the hardware circuit and PCB is designed. The software mainly uses the PCB by Altium Designer and software programming by the Keil C.

T he main control unit of this program is MCU STC89C52, whose serial port expansion is based on each separate function. The ZHX1010 chip of ZiLOG Company is applied for data transmission between the meter circuit and the meter reading circuit. It not only achieves a wireless transformation between the data, but also improves the working efficiency. The design has many advantages, such as easy to use, flexible to adapt, simple to operate. I believe that the meter reading system for wireless and miniaturization will be gradually extended in the future.

Keywords: intelligent meter reading system; meter circuit ;STC89C52;infrared data association

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