【正文】 組態(tài)軟件 King View 具有強(qiáng)大的數(shù)據(jù)采集、處理功能和友好的人機(jī)界面， 故基于單片機(jī)和組態(tài)王的溫度控制系統(tǒng)， 可以理想地實(shí)現(xiàn)對(duì)相關(guān)設(shè)備的實(shí)時(shí)監(jiān)控。 關(guān)鍵詞 ： AT89S52； DS18B20； 溫度控制 ； 組態(tài)王； RS232 河南理工大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書 Abstract In industrial and agricultural production and daily life,all sectors are closely related to Measurement and Control occupy a very important position. At present,temperature measurement and control equipment has bee normal working majority of the premise that and the temperature requirements more stringent. Therefore,the temperature measurement and control method of attracting increasing attention. The paper introduces a temperature control system,the detection and control of the controlled objects are acplished by slave puters,and the supervision of the controlled objects and slave puters is implemented in the host puter based on King and Microprocessor AT89S52 build up sensor works,which ac hieve the design of hardware and software for multiple spots temperature detected and control Paper describes the DS18B20 temperature measurement method and application of incremental PID loop control algorithm and mode of PWM power by controlling the solid state relay must cycle on/off duty cycle, and ultimately to electric oven temperature entire temperature detected and control system is capable of detecting and controlling multiplepoint temperature for accurate measurement,the controlling range from the room temperature to 120℃ ， control error is less than ℃ .The munication between PC and microprocessor based on RS2332 is described in detail in the View software supports a powerful platform for real time detection supports powerful function for data acquisition and management and manmachine state detection for temperature detected and control system based on Microprocessor and King View software is designed to detect the devices and make sure the devices work in a reliable,effective and secure way. With low cost,high reliability and convenience of operators,the system can be used in many fields such as the temperature measurement system of warehouse,the air conditioning control of building and the monitor of productive process. Keywords: AT89S52。 Temperature control。 RS232 河南理工大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書 目錄 1 緒論 ............................................................. 1 課題背景及現(xiàn)狀 ...................................................... 1 溫度測(cè)量方面 ..................................................... 1 溫度控制方面 ..................................................... 2 研究意義 ............................................................ 2 課題要求 ............................................................ 3 2 方案論證與主要器件選型 ............................................. 4 方案比較與選擇 ...................................................... 4 溫度測(cè)量方案選擇 ................................................. 4 溫度控制方案的選擇 ............................................... 5 主要器件的選擇 ...................................................... 6 傳感器 ........................................................... 6 主控元件 ......................................................... 8 顯示器件 ......................................................... 9 控制模塊 ......................................................... 9 通信模塊 ........................................................ 11 上位機(jī)組態(tài)監(jiān)控 ..................................................... 12 系統(tǒng)總體設(shè)計(jì)框圖 ................................................... 12 3 系統(tǒng)硬件電路設(shè)計(jì) ................................................. 14 系統(tǒng)硬件電路框圖 ................................................... 14 單片機(jī)最小系統(tǒng)設(shè)計(jì) ................................................. 14 多點(diǎn)測(cè)量電路設(shè)計(jì) ................................................... 16 ............................................. 16 ............................................. 16 DS18B20 使用中注意事項(xiàng) .......................................... 18 河南理工大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書 2 顯示和鍵盤電路設(shè)計(jì) ................................................. 18 顯示和鍵盤電路圖 ................................................ 18 顯示部分設(shè)計(jì) .................................................... 19 鍵盤電路設(shè)計(jì) .................................................... 20 控制模塊電路設(shè)計(jì) ................................................... 21 控制執(zhí)行電路 .................................................... 21 報(bào)警電路 ........................................................ 21 串口通訊電路 ....................................................... 22 4系統(tǒng)軟件部分設(shè)計(jì) .................................................. 23 軟件總體設(shè)計(jì) ....................................................... 23 DS18B20 的測(cè)溫程序 ................................................. 24 DS18B20 常用指令 ................................................ 24 初始化子程序 ................................................... 24 讀子程序 ....................................................... 25 寫子程序 ....................................................... 25 顯示和鍵盤掃描程序 ................................................. 26 顯示掃描程序流程圖 .............................................. 26 鍵盤掃描程序流程圖 .............................................. 26 控制執(zhí)行程序 ....................................................... 27 控制思路及其流程圖 .............................................. 27 PID 控制算法 .................................................... 28 PID 參數(shù)的整定 .................................................. 29 PWM 波的設(shè)計(jì) .................................................... 30 通訊程序 ........................................................... 30 組態(tài)王監(jiān)控界面設(shè)計(jì) ................................................. 34 5 系統(tǒng)調(diào)試 ......................................................... 36 硬件部分調(diào)試 ....................................................... 36 軟件部分調(diào)試 ....................................................... 37 河南理工大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書 3 6 總結(jié) ........................................................