【正文】 it circuit choose different devices. So, this paper will first from the whole framework of the choice of hardware to set the overall circuit, then will describe each unit circuit feasible ponents, in contrast to determine a priority. According to the design to after software program design. Are determined already AT89C51 singlechip microputer as the core of the system design, the strong function of AT89C51 will plete the signals received keyboard, accept data collection of chip to collect data in real time, to deal with that is to be revea LED after the part is sent to a display screen, , and based on the need to control speech output, according to the predetermined mand control realization circuit temperature adjustment. Speech broadcast of the integrated chip, for voice foreign transmission, choose ISD4004 largely optimizes the system, ISD4004 USES is the direct simulation amount storage technology, this technology can directly to the advantage of the simulation data entry, namely speech broadcast content can direct input part, without modulus outfit change, storage, and mathematical model with change, not only simplify the process, and minimize distortion, output effect is good. Data acquisition chip will use DS18B20, DS18B20 outstanding characteristic is no mathematical model with change, can directly access microcontroller, reduce signal distortion. Control realize part will use the relay, the number of single chip microputer by small electric current flows through to relay to control. Rely on the above design, the system will be efficient, stable realize data acquisition, processing, output, and realize the speech broadcast, temperature control and constant. Key words: speech broadcast ， water temperature control ， singlechip microputer， chip， relay目 錄 III 目錄 摘 要 ....................................................... I ABSTRACT .................................................... II 目錄 ....................................................... III 第一章 引 言 ............................................... 1 課題背景及意義 ................................................1 主要設(shè)計(jì)技術(shù)指標(biāo)與 參數(shù) ........................................2 基本要求 ..................................................2 主要性能指標(biāo) ..............................................2 主要設(shè)計(jì)內(nèi)容 ..............................................2 第二章 系統(tǒng)總體框圖和方案對比論證 .............................. 3 總體方案的對比論證 ............................................3 系統(tǒng)框圖 ......................................................3 單元電路方案的對比論證 ........................................4 數(shù)采集模塊 ................................................4 語音播報(bào)模塊 ..............................................5 控制實(shí)現(xiàn)模塊 ..............................................6 第三章 硬件單元電路設(shè)計(jì)及相關(guān)參數(shù) .............................. 9 單片機(jī) AT89C51 模塊 ............................................9 主要性能參數(shù)： ............................................9 功能特性概述 : .............................................9 引腳功能說明 : ...........................................10 按鍵模塊 .....................................................12 數(shù)據(jù)采集模塊 .................................................13 DS18B20 主要特性 .........................................13 封裝及引腳排列、功能 .....................................13 單片機(jī)訪問 DS18B20 流程 ...................................14 DS18B20 測溫原理 .........................................15 單片機(jī)與 DS18B20 的連接 ...................................16 LED 顯示模塊 .................................................16 語音播報(bào)模塊 .................................................17 ISD4004 外部引腳 .........................................18 工作參數(shù) .................................................19 語音播放單元電路 .........................................19 目 錄 IV 執(zhí)行模塊 .....................................................20 固態(tài)繼電器 SSR工作原理 ...................................20 固態(tài)繼電器 SSR的特點(diǎn) .....................................21 繼電器控制電路圖 .........................................22 時(shí)鐘和復(fù)位電路 ...............................................22 時(shí)鐘 .....................................................22 復(fù)位電路 .................................................23 主電源電路 ...................................................24 第四章 系統(tǒng)各單元模塊程序設(shè)計(jì) ................................. 23 主程序流程圖 .................................................23 鍵盤模塊程序流程圖 ...........................................24 數(shù)據(jù)采集模塊程序流程圖 .......................................24 顯示模塊程序流程圖 ...........................................25 語音播報(bào)模塊程序流程圖 .......................................26 執(zhí)行模塊程序流程圖 ...........................................27 結(jié)論 ........................................................ 28 參考文獻(xiàn) ..................................................... 29 致謝及聲明 ................................................... 30 附錄 ........................................................ 31 附錄一：整機(jī)電路圖 ...............................................31 附錄二：部分程序 .................................................33 第一章 引言 1 第一章 引 言 課題背景及意義 水溫控制系統(tǒng) 起源于早期的溫度控制，而溫度控制最早的應(yīng)用是在大工業(yè)生產(chǎn)時(shí)期的工廠中，例如鋼鐵生產(chǎn)，鋼材的等級、型 號 等技術(shù)指標(biāo)的區(qū)分在于對不同溫度鋼水控制來實(shí)現(xiàn)。 畢業(yè)設(shè)計(jì) 具有語音播報(bào)功能的水溫控制系統(tǒng) 學(xué) 院： 專 業(yè)： 學(xué)生姓名 ： 學(xué) 號： 指導(dǎo)教師 ： 2021 年 6 月 摘 要 I 摘 要 本文 所描述的具有語音播報(bào)功能的水溫控制系統(tǒng)是以成熟的框架為基礎(chǔ)進(jìn)行設(shè)計(jì) 的 ,當(dāng)前系統(tǒng)框架下 ,設(shè)計(jì)之中的區(qū)別主要在于系統(tǒng)各個(gè)部分單元電路選用的器件的不同 .因此 ,本 文將首先從 整體框架中硬件的選擇來確定總體電路 ,之后將描述各單元電路可行的元器件 ,在對比中確定優(yōu)先項(xiàng)。之后在隨著技術(shù)的革新進(jìn)步，生產(chǎn)活動(dòng)的擴(kuò)大，越來越多的行業(yè)開始應(yīng)用溫度控制， 而溫度控制也不再