【正文】 ............................................1 概述 ..........................................................................................................................................................................1 溫度測控技術(shù)的發(fā)展與現(xiàn)狀 ..................................................................................................................1 定值開關(guān)控溫法 ................................................................................................................................2 PID 線性控溫法 .................................................................................................................................2 智 能溫度控制法 .................................................................................................................................3 系統(tǒng)總體設(shè)計方案 ........................................................................................................................................3 系統(tǒng)性能要求及特點 .....................................................................................................................3 系統(tǒng)硬件方案分析 ...........................................................................................................................4 系統(tǒng)軟件方案分析 ...........................................................................................................................5 本文主要工作及章節(jié)安排 ........................................................................................................................6 本文主要工作 ......................................................................................................................................6 本文結(jié)構(gòu) 安排 ......................................................................................................................................6 第二章 系統(tǒng) 硬件設(shè)計 ..............................................................................................................................................7 系統(tǒng)硬件總體結(jié)構(gòu) .........................................................................................................................................7 主控模塊器件選型及設(shè)計 ........................................................................................................................7 單片機的選用 ......................................................................................................................................7 單片機介紹 ............................................................................................................................................8 主控模塊設(shè)計 ......................................................................................................................................9 輸入通道設(shè)計 ..................................................................................................................................................10 Pt100 溫度傳感器 ...........................................................................................................................10 A/D 轉(zhuǎn)換 ..................................................................................................................................................12 輸出通道設(shè)計 ..................................................................................................................................................14 溫控箱的功率調(diào)節(jié)方式 .............................................................................................................14 可控硅輸出電路 ..............................................................................................................................15 鍵盤電路設(shè)計 ..................................................................................................................................................17 顯示電路設(shè)計 ..................................................................................................................................................18 保護電路設(shè)計 ..................................................................................................................................................19 硬件抗干擾措施 ............................................................................................................................................20 河南城建學(xué)院本科畢業(yè)設(shè)計（論文） 目錄 IV 第三章 系統(tǒng) 軟件設(shè)計 ............................................................................................................................................21 軟件設(shè)計思想 ..................................................................................................................................................21 軟件組成 .............................................................................................................................................................22 主程序模塊 ........................................................................................................................................................22 數(shù)據(jù)采集模塊 ..................................................................................................................................................23 數(shù)據(jù)處理模塊 ..................................................................................................................................................24 數(shù)字濾波 ...............................................................................................................................................24 顯示處理 ...............................................................................................................................................26 軟件抗干 擾措施 ............................................................................................................................................26 第四章 系統(tǒng) 控制方案 ............................................................................................................................................27 PID 控制 .............................................................................................................................................