【正文】 remote Collecting,this design pleted the AT89C51 as control core, and a detailed analysis of the data acquisition scheme and microcontroller and PC munication system hardware design and software design. This paper described the working principle of the residential remote meter reading, the hardware part of the design and the software part of the design. Hardware ponents include: signal acquisition and working principle, LCD, keyboard control and data system used a microcontroller for water, electricity, gas and other signal acquisition, analysis, control, processing, display driver could achieve remote meter reading for water, electricity, gas volume measurement,which had better dynamic performance, accurate and reliable measurement results. The hardware circuit the structure is relatively simple pared to the traditional using single chip microputer software to reduce the plexity of hardware circuit design, the system had strong data processing ability and good stability and accuracy. Because the system has simple structure and low cost advantages, it has a very broad market promotional value. Key words： MCU； remote meter reading； AT89C51 III 目錄 摘 要 ........................................................................................................................ I ABSTRACT .......................................................................................................................II ........................................................................................................................... 1 遠(yuǎn)程抄表的研究背景及其意義 .................................................................... 1 遠(yuǎn)程抄表的國內(nèi)外現(xiàn)狀及其發(fā)展趨勢(shì) ........................................................ 1 單片機(jī)系統(tǒng)的優(yōu)點(diǎn)和應(yīng)用 ............................................................................ 2 ............................................................................................... 4 遠(yuǎn)程抄表的總體功能 .................................................................................... 4 遠(yuǎn)程抄表的總體結(jié)構(gòu) .................................................................................... 4 ............................................................................................... 6 下位主控機(jī) ................................................................................................... 6 下位主控機(jī)芯片選擇 ........................................................................ 6 主控機(jī) AT89c51 最小系統(tǒng)構(gòu)成 ........................................................ 6 信號(hào)采集模塊 ............................................................................................. 10 電表 ................................................................................................. 10 水表、煤氣表 ................................................................................. 11 顯示模塊 ..................................................................................................... 12 功能概述 ......................................................................................... 12 引腳功能簡介 ................................................................................. 12 顯示模塊引腳連接 ......................................................................... 13 鍵盤模塊 ..................................................................................................... 14 存儲(chǔ)模塊 ..................................................................................................... 15 管腳 ................................................................................................. 15 存儲(chǔ)模塊電路 ................................................................................. 16 通信模塊 ..................................................................................................... 16 RS232 接口標(biāo)準(zhǔn) ............................................................................ 17 RS485 接口標(biāo)準(zhǔn) ............................................................................ 17 ......................................................................................... 19 主程序設(shè)計(jì) .................................................................................................. 19 顯示子程序設(shè)計(jì) ......................................................................................... 20 鍵盤子程序設(shè)計(jì) ......................................................................................... 22 通信子程序設(shè)計(jì) ......................................................................................... 23 IV 結(jié) 論 ........................................................................................................................... 24 參考文獻(xiàn) ..................................................................................................................... 25 附錄一 外文譯文 ....................................................................................................... 26 附錄二 外文原文 ....................................................................................................... 30 附錄三 系統(tǒng)硬件電路設(shè)計(jì)原理圖 ........................................................................... 31 附錄四 系統(tǒng)仿真圖 ................................................................................................... 32 附錄五 部分程序代碼 ............................................................................................... 33 致 謝 ........................................................................................................................... 53 大連大學(xué)學(xué)位論文版權(quán)使用授權(quán)書 ......................................................................... 54 小區(qū)遠(yuǎn)程抄表系統(tǒng)的設(shè)計(jì) 1 遠(yuǎn)程抄表的研究背景及其意義 隨著人民生活水平地逐步提高，資源消費(fèi)的計(jì)量、管理及收費(fèi)的工作日益復(fù)雜，以往耗能表的抄收主要靠工作人員親自來抄表，這不僅不能保證信息 的實(shí)時(shí)性，也會(huì)造成錯(cuò)抄和估抄的現(xiàn)象，最主要是會(huì)引起人力、物力和時(shí)間的浪費(fèi)。 本系統(tǒng)采用單片機(jī)對(duì)水、電、煤氣等信號(hào)的采集、 分析、控制 、處理、驅(qū)動(dòng)顯示進(jìn)行控制 ，能夠達(dá)到遠(yuǎn)程抄表對(duì)水量、電量、煤氣量具有較好的動(dòng)態(tài)測(cè)量性能，測(cè)量結(jié)果準(zhǔn)確可靠，硬件電路結(jié)構(gòu)較之傳統(tǒng)的系統(tǒng)相對(duì)簡單。此系統(tǒng)設(shè)計(jì)綜合地運(yùn)用通信技術(shù)、傳感器技術(shù)和單片機(jī)技術(shù)，實(shí)現(xiàn)了對(duì)水 、電、煤氣的數(shù)據(jù)