100kW微機控制單晶硅加熱電源設(shè)計

電子機電論文編號:JD1021  論文字數(shù):17537,頁數(shù):54

目 錄
 第1章 緒 論 1
1.1 加熱電源的背景 1
1.2 加熱電源的發(fā)展前景 1
1.3 加熱電源的功能特點 1
 第2章 系統(tǒng)總體設(shè)計方案 3
 第3章 硬件設(shè)計 5
3.1 主電路及其元件參數(shù)的選取 5
 3.1.1 變壓器的選擇 6
 3.1.2 可控硅的參數(shù)選擇 6
3.2 CPU系統(tǒng)設(shè)計 7
 3.2.1 單片機的選擇 7
 3.2.2 鍵盤/顯示接口 10
 3.2.3 片外RAM擴展 13
 3.2.4 復(fù)位電路設(shè)計 15
3.3 A/D轉(zhuǎn)換電路設(shè)計 16
 3.3.1 MAX197結(jié)構(gòu)及原理 17
 3.3.2 MAX197與單片機接口電路設(shè)計 19
3.4 數(shù)據(jù)采集電路設(shè)計 20
 3.4.1 電壓/電流測量電路設(shè)計 20
 3.4.2 4～20mA輸入電路設(shè)計 21
 3.4.3 溫度測量電路設(shè)計 22
 3.4.4 手動輸入電路設(shè)計 23
3.5 Ｄ/Ａ轉(zhuǎn)換電路設(shè)計 23
 3.5.1 D/A轉(zhuǎn)換器介紹 23
 3.5.2 MAX508結(jié)構(gòu)及原理 24
3.6 觸發(fā)電路的設(shè)計 26
3.7 聲光報警電路的設(shè)計 27
3.8 通信口的設(shè)計 28
3.9 控制電源的設(shè)計 29
 第4章 系統(tǒng)軟件設(shè)計 31
4.1 主程序 31
4.2 自檢程序 32
4.3 數(shù)據(jù)采集程序 33
4.4 數(shù)據(jù)處理程序 36
4.5 功率調(diào)節(jié)程序 42
4.6 鍵盤/顯示程序 44
 第5章 結(jié) 論 48
 參考文獻 49
 致 謝 50 

 摘 要
“100kW微機控制單晶硅加熱電源”運用先進的計算機控制技術(shù)實現(xiàn)低電壓大電流電源輸出的功率調(diào)節(jié)，實現(xiàn)單晶硅加熱電源的數(shù)字化控制。設(shè)計內(nèi)容包硬件設(shè)計和軟件設(shè)計兩大部分，其中硬件設(shè)計包括溫度設(shè)定值檢測電路、晶閘管控制電路、CPU系統(tǒng)、遠程通信接口、人機對話接口等部分，軟件設(shè)計包括程序流程圖以及具體程序設(shè)計。
 在硬件部分，主電源經(jīng)變壓器降壓后由六只可控硅組成的三相橋式全控電路；采用MAX197實現(xiàn)將模擬量信號變成數(shù)字量信號，由AT89C52和數(shù)據(jù)存儲器6264構(gòu)成CPU 系統(tǒng)，功率控制部分采用MAX508將數(shù)字量轉(zhuǎn)換為模擬量控制觸發(fā)電路，達到調(diào)節(jié)功率的目的；鍵盤、顯示電路采用專用的8279芯片，通訊接口電路采用MAX487構(gòu)成的485通信方式，與其他的儀器儀表作遠距離通信，實現(xiàn)遠程控制。
 在軟件設(shè)計部分，設(shè)計了主程序，自檢程序，數(shù)據(jù)采集程序，數(shù)據(jù)處理程序，鍵盤控制中斷服務(wù)程序，顯示程序，功率調(diào)節(jié)程序等部分。軟件設(shè)計采用了模塊化的設(shè)計方法。
 關(guān)鍵詞：單晶硅；可控硅；單片機；加熱電源

Abstract
 “The 100kW microcomputer control monocrystalline silicon heating power source” has utilization the advanced computer control technology that realized the power regulation of low voltage and big electric current power source outputs , and monocrystalline silicon heating power source numerical control . The design includes two major parts, which are hardware design and the software design .The hardware design includes electric design of the temperature setting value examination, thyristor control circuit, CPU systematic, long-distance parts correspondence connection, man-machine conversation part and so on. The software design includes the program flow diagram and the concrete program design.
 In the hardware part, the main power source voltage is dropped by transformer firstly, then used the all controls the electric circuit of the three-phase bridge type which is composed by six silicon-controlled;  Using the MAX197 realizes that the simulate signal is transformed into  the digital signal; the CPU system is consist of AT89C52 and the data-carrier storage 6264; Power control section uses MAX508 to transform the digital quantity into the simulation quantity control triggering electric circuit, and achieve the goal of regulating power; The keyboard and the display circuit use the special-purpose 8279 chips; The communication part electric circuit corresponds with other instrument measuring appliances by the 485 correspondence way that is make up MAX487, and up to the long-distance control.
 In the software design part, have designed the master routine, the self-checking procedure, the data acquisition procedure, the data reduction program, the keyboard control interrupt service, the demonstration procedure, power regulation procedure and so on. The software design has used the modularized design method.
 Key word: Monocrystalline silicon; Silicon-controlled rectifier; Monolithic integrated circuit; Heats up the power source