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題 目 基于單片機(jī)的燃?xì)鈭?bào)警器的設(shè)計(jì) 英文并列題目 The design of gas alarm system based on singlechip microputer 院 系 控制技術(shù)學(xué)院 班 級(jí) 自動(dòng)化控制 21035 學(xué)生姓名 王 澄 學(xué) 號(hào) 2020103526 所在團(tuán)隊(duì) 指導(dǎo)老師( 1) 單 正 婭 職 稱 講 師 指導(dǎo)老師( 2) 職 稱 答辯委員會(huì)主任 主答辯人 二 零 一 三 年 四 月專科畢業(yè)設(shè)計(jì)說明 書 摘 要 全國(guó)燃?xì)庑袠I(yè)發(fā)展迅猛,液化氣、天然氣、煤制氣等城市燃?xì)庾鳛榍鍧嵞茉匆言诠ど虡I(yè)和城鎮(zhèn)居民用戶中得到廣泛應(yīng)用,特別是隨著“西氣東輸”工程的快速進(jìn)展,燃?xì)庑袠I(yè)發(fā)展?jié)摿薮?。但是隨著燃?xì)獾膹V泛應(yīng)用,由于燃?xì)庑孤┧l(fā) 的爆炸、中毒和火災(zāi)事故也時(shí)有發(fā)生,這在某種程度上增加了城市的不安全和不穩(wěn)定因素。為了使燃?xì)飧玫卦旄S诿瘢旄S谏鐣?huì),減少并杜絕各種因燃?xì)庑孤┒l(fā)的爆炸及火災(zāi)事故,各燃?xì)馐褂脝挝患熬用裼脩暨x擇一種適合的室內(nèi)煤氣泄露報(bào)警器實(shí)為必要之舉。 燃?xì)鈭?bào)警器的核心是氣體傳感器。當(dāng)氣體傳感器遇到燃?xì)鈺r(shí),傳感器電阻隨燃?xì)鉂舛榷兓?,隨之產(chǎn)生電信號(hào),供燃?xì)鈭?bào)警器后級(jí)線路處理。經(jīng)過電子線路處理變成濃度成比例變化的電壓信號(hào),由線性電路加以補(bǔ)償,使信號(hào)線性化,經(jīng)微機(jī)處理、邏輯分析,輸出各種控制信號(hào),即當(dāng)燃?xì)鉂舛冗_(dá)到報(bào)警設(shè)定值時(shí),燃 氣報(bào)警器發(fā)出聲光報(bào)警信號(hào)并可顯示燃?xì)鉂舛然騿?dòng)外部聯(lián)運(yùn)設(shè)備。 本文正是通過分析目前燃?xì)鈭?bào)警器的現(xiàn)狀,設(shè)計(jì)制作室內(nèi)故障監(jiān)測(cè)報(bào)警系統(tǒng),保障人們的生命財(cái)產(chǎn)安全。 關(guān)鍵詞 : 氣體傳感器; 煤氣泄漏 ;煤氣報(bào)警 無(wú) 錫 職 業(yè) 技 術(shù) 學(xué) 院 畢 業(yè) (說明) 設(shè) 計(jì) 說 明 書 II Abstract The rapid development of the national gas industry, liquefied gas, natural gas, coal gas and other city gas as a clean energy business and urban residents in users has been widely used, and gas industry has great potential. But with the extensive use of gas, due to gas leak caused an explosion, poisoning and fire accidents have also occurred to some extent, increased the city39。s insecurity and instability. In order for gas to better benefit the people, the benefit of the munity, to reduce and eliminate all due to gas leak caused the explosion and fire, the gas unit and residential customers use to select a suitable indoor gas leak alarm is actually necessary move. Gas sensor is the core of bustible gas. When the gas face gas sensor, the sensor resistance change with gas concentration, the resulting electrical signal for processing of bustible gas line after the class. After dealing with electronic circuit into a voltage proportional to the concentration change signal to be pensated by the linear circuit, the signal linearization, by puter processing, logical analysis, the output of various control signals, that is, when the gas concentration alarm set value , bustible gas audible alarm signal can display gas concentration or start an external transport equipment. It is through this analysis of the current status of bustible gas, indoor design fault monitoring alarm system to protect people39。s lives and property. Keywords: Gas sensor; Gas Leak ; Gas Alarm 無(wú) 錫 職 業(yè) 技 術(shù) 學(xué) 院 畢 業(yè) (說明) 設(shè) 計(jì) 說 明 書 第 1 頁(yè) 共 31 頁(yè) 目 錄 第一章 概 述 .......................................................... 3 課題背景 ........................................................ 3 燃?xì)鈭?bào)警器的概述 ................................................ 4 課題研究的目的及意義 ............................................ 4 第二章 系統(tǒng)方案設(shè)計(jì) .................................................. 5 系統(tǒng) 設(shè)計(jì)要求 .................................................... 5 系統(tǒng)設(shè)計(jì)內(nèi)容 .................................................... 6 系統(tǒng) 方案 框圖 ..................................................... 8 第三章 硬件電路設(shè)計(jì) .................................................. 7 主控模塊 ......................................................... 8 電源的設(shè)計(jì) ..................................................... 9 三端固定式集成穩(wěn)壓器 ........................................ 9 +5V 電源電路的設(shè)計(jì) ......................................... 10 信號(hào)采集放大電路的設(shè)計(jì) ......................................... 11 氣敏傳感元 件特性 ............................................ 12 信號(hào)采集放大電路的設(shè)計(jì) ..................................... 12 A/D 轉(zhuǎn)換電路的設(shè)計(jì) .............................................. 13 ADC0809 的介紹 .............................................. 14 顯示器電路的設(shè)計(jì) ............................................... 15 顯示模塊 LCD1602 ............................................ 16 電路設(shè)計(jì)方法 ............................................... 16 聲音 報(bào)警器電路的設(shè)計(jì) ........................................... 17 鍵盤電路的設(shè)計(jì) ................................................. 17 鍵盤的工作原理 ............................................. 18 鍵盤的識(shí)別方法 ............................................. 18 鍵盤的工作方式 ............................................. 19 第四章 軟件設(shè)計(jì) ..................................................... 19 無(wú) 錫 職 業(yè) 技 術(shù) 學(xué) 院 畢 業(yè) (說明) 設(shè) 計(jì) 說 明 書 第 2 頁(yè) 共 31 頁(yè) 軟件設(shè)計(jì)重要性 ................................................. 20 程序框圖 ....................................................... 21 第五章 實(shí)驗(yàn)調(diào)試 ...................................................... 21 硬件調(diào)試 ....................................................... 21 軟件調(diào)試 ....................................................... 22 調(diào)試結(jié)果 ....................................................... 23 小結(jié) ..........................................................23 第六章 總結(jié) ................................................. 24 致 謝 ........................