電加熱器溫控設(shè)計

測控論文編號:CK043   論文字數(shù):11159,頁數(shù):34

 目錄
摘要 II
abstract III
第一章 引言 1
第二章 系統(tǒng)總體設(shè)計 2
 2.1系統(tǒng)任務(wù)和框圖 2
2.2溫度控制系統(tǒng)結(jié)構(gòu)圖及總述  2
2.3溫度控制系統(tǒng)硬件設(shè)計 3
2.3.1單片機STC89C52RC 3
 2.3.2溫度傳感器DS18B20 7
2.3.3雙向可控硅TLC336A 11
 2.3.4數(shù)碼管LED顯示器 13
2.3.5狀態(tài)指示燈和開關(guān) 14
第三章 溫度控制系統(tǒng)軟件設(shè)計 15
 3.1單片機程序流程設(shè)計 15
3.2代碼編寫 16
第四章 設(shè)計過程中總結(jié)和心得 18
致謝 19
參考文獻 20
附錄1 21
附錄2 22
附錄3 23

摘  要
 溫度對于生活如此重要，因此設(shè)計一個具有高可靠性，靈活性,方便性的溫度控制系統(tǒng)是很有必要的。
 本課題介紹了以STC89C52RC單片機為核心的溫度控制系統(tǒng)的工作原理和設(shè)計方法。溫度信號由溫度芯片DS18B20采集，并以數(shù)字信號的方式傳送給單片機。文中介紹了該控制系統(tǒng)的硬件部分，包括：溫度檢測電路、溫度控制電路、溫度顯示電路和一些接口電路 。單片機通過對信號進行相應(yīng)處理，從而實現(xiàn)溫度控制的目的。文中還以圖文并茂的方式著重介紹了各部分的電路組成和軟件設(shè)計部分，在這里采用模塊化結(jié)構(gòu)，主要模塊有：主程序、數(shù)碼管顯示子程序、鍵盤掃描及按鍵處理子程序、溫度設(shè)定子程序、以及有關(guān)DS1820的程序。
 該系統(tǒng)能夠?qū)崿F(xiàn)實時環(huán)境溫度的測量并顯示在數(shù)碼管上,通過開關(guān)切換顯示當前溫度和設(shè)定溫度,調(diào)節(jié)溫度高低,當溫度低于設(shè)定溫度時LED1亮,高于設(shè)定溫度時LED2亮,同時開關(guān)繼電器實現(xiàn)對加熱器的溫度控制。
 
關(guān)鍵字：MCS-51單片機；DS18b20；溫度測量

Abstract
Temperature is so important for life, so designing a high reliability, flexibility, ease of temperature control system is necessary. This issue introduces to STC89C52RC MCU as the core principle of temperature control systems and design methods. Temperature signal from the temperature of chip DS18B20 acquisition, and digital signals transmitted to the microcontroller. In this paper, the control system hardware, including: temperature sensing circuit, temperature control circuit, the temperature display circuit, and some interface circuits. SCM signals through the corresponding treatment in order to achieve temperature control. The paper also illustrated the way in order to highlight the various parts of the circuit and software design, where the modular structure, the main module: the main program, digital display subroutine, keyboard scanning and key processing subroutine, the temperature setting child procedures, and procedures for the DS1820. The system can realize real-time temperature measurement and display of digital control, through switch displays the current temperature and set temperature, adjust the temperature level, when the temperature is below the set temperature LED1 on, LED2 light above the set temperature while switching relays on the heater temperature control. Keywords: MCS-51 microcontroller; DS18b20; temperature measurement