摘要：智能燃?xì)獗硎且环N根據(jù)用戶IC卡購氣量實(shí)現(xiàn)自動計量收費(fèi)，自動控制用氣的民用高技術(shù)產(chǎn)品，它具有傳統(tǒng)人工抄表收費(fèi)式燃?xì)獗頍o可比擬的優(yōu)越性，實(shí)現(xiàn)了燃?xì)馐召M(fèi)管理系統(tǒng)的電子化，信息化和網(wǎng)絡(luò)化，智能燃?xì)獗砑捌涫召M(fèi)管理系統(tǒng)已經(jīng)呈現(xiàn)出廣闊的應(yīng)用前景。
燃?xì)獗硎窃诔Ｒ?guī)家用模式燃?xì)獗眢w上安裝智能測控系統(tǒng)而構(gòu)成的，本文詳細(xì)介紹了該測控系統(tǒng)，本文以AT89S52單片機(jī)為核心，通過流量傳感器測得的燃?xì)饬拷?jīng)過信號放大電路進(jìn)行A/D 轉(zhuǎn)換，轉(zhuǎn)換后的數(shù)字信號經(jīng)過單片機(jī)處理控制微功耗電閥門，最后將燃?xì)獾睦鄯e數(shù)、燃?xì)獾目捎脭?shù)及IC卡中余額等信息通過LED顯示器模塊進(jìn)行顯示，本文還對燃?xì)獗淼碾娫幢O(jiān)控系統(tǒng)、射頻卡模塊、掉電存儲系統(tǒng)、聲光報警系統(tǒng)進(jìn)行了設(shè)計。
關(guān)鍵字： 單片機(jī) 燃?xì)獗?預(yù)付費(fèi)

Abstract：Intelligent gas meter is a according to user IC card gas for the realization of automatic meterage, automatic control of high technology using gas civil products, it has a traditional artificial copy meter charge type gas meter incomparable advantage and realize the charge of fuel gas management system, electronic information and network, IC card gas meter and its charge management system appears to have a broad application prospect.
Gas meter is in conventional household model gas meter installed on the body of the intelligent measurement system consists of, the article introduces the measurement and control system, this paper to AT89S52 SCM as the core, the flow sensor measurement of gas quantity after amplification circuit A/D conversion, after converting digital signal of the single chip micro control valve and will last electric power consumption of gas, the fuel gas of the cumulative number of available Numbers and IC card balance of information through the LED display module, this paper also shows the power of the gas meter of monitoring system, radio frequency card module, power lost storage system, sound and light alarm system design
Key words： Single-Chip Microcomputer Gas meter prepaid

目 錄
摘 要 ...........................................................................................I
Abstract............................................................................................II
第1章 緒 論.......................................................................................1
1.1課題研究的目的與意義.......................................................................1
1.2 IC卡燃?xì)獗淼陌l(fā)展現(xiàn)狀.......................................................................2
1.3 IC 卡燃?xì)獗淼陌l(fā)展趨勢.....................................................................3
第2章 主電路的選擇與設(shè)計.....................................................................5
2.1 整體方案論述................................................................................5
2.1.1 IC智能燃?xì)獗砜梢詫?shí)現(xiàn)的功能..........................................................5
2.1.2 IC 智能燃?xì)獗淼脑O(shè)計方案及系統(tǒng)組成.................................................5
2.1.3系統(tǒng)總體的控制過程.......................................................................6
2.2 IC卡燃?xì)獗碇饕骷x擇................................................................6
第3章 硬件系統(tǒng)的設(shè)計...........................................................................7
3.1 主控系統(tǒng)的設(shè)計...............................................................................7
3.1.1 主控芯片的介紹............................................................................7
3.1.2 主控電路...................................................................................10
3.3 射頻卡模塊..................................................................................11
3.4電源監(jiān)控系統(tǒng)................................................................................12
3.5電磁閥驅(qū)動系.................................................................................14
3.6燃?xì)饬髁總鞲衅?..............................................................................15
3.7 A/D轉(zhuǎn)換器 ....................................................................................16
3.7.1 ADC0809概述 ..............................................................................16
3.7.2 ADC0809內(nèi)部結(jié)構(gòu).........................................................................16
3.7.3 ADC0809轉(zhuǎn)換原理.........................................................................18
3.8 燃?xì)庑孤﹫缶娐?..........................................................................18
3.9 聲光報警電路.................................................................................19
3.10 LED顯示系統(tǒng)................................................................................20
3.11 擴(kuò)展存儲器的設(shè)計.........................................................................21
3.12 電源電路設(shè)計..............................................................................24
3.12.1電路工作原...理.........................................................................24
3.12.2電源電路調(diào)試 ...............................