DZ214單片機控制制冷機來達到控制溫度,dz214,單片機,控制,節(jié)制,制冷機,達到,到達,溫度
長春工業(yè)大學畢業(yè)論文摘要制冷機是我國目前各行業(yè)技術改造和進行設備引進所急需的配套設備,也是提高產(chǎn)品質(zhì)量,企業(yè)升級的重要設備。而傳統(tǒng)的測控方法由于從測量到顯示采用模擬方式,數(shù)據(jù)采集速度慢,不具備實時性,抗干擾能力差。測量精度完全依賴與硬件特性。自單片機問世以來,與其相關的測控儀器也應運而生,尤其是數(shù)字測試技術于單片機的結合。單片機技術更是以其高效率,高精度,多功能的優(yōu)勢逐漸取代傳統(tǒng)的測控方法。本文就是利用單片機控制制冷機從而達到溫度控制的目的。在本設計中利用溫度傳感器 AD590 可實現(xiàn)溫度采集。經(jīng) A/D 轉(zhuǎn)換器 ADC0809 實現(xiàn)模擬-數(shù)字轉(zhuǎn)換。送單片機來實現(xiàn)整個設計的要求,可以實現(xiàn)時間,溫度,故障代碼顯示等功能。本系統(tǒng)具有高精度,高靈敏性,高可靠性等特點。可以高速采集數(shù)據(jù),具有實時性,并且具有很強的抗干擾能力和自動循環(huán)及自動診斷能力。關鍵詞:制冷機,AT89C51,AD590,溫度控制長春工業(yè)大學畢業(yè)論文Title Temperature control system of refrigeration machineAbstractRefrigeration plane our country every profession and trade technological transformation carry on corollary equipment that equipment's introducing need badly at present, Improve product quality , the important equipment which enterprises upgraded too. And the traditional one observes and controls the method and adopt the simulation way from measurement to showing, the data are gathered slowly, does not possess real-time character , anti-interference ability is bad. Measure the precision and totally rely on with the characteristic of the hardware. Since the one-chip computer comes out , arise at the historic moment too instead of relevant observing and controlling the instrument, especially the figure tests the combination of the one-chip computer of technology. The technology of the one-chip computer is with its high efficiency even more, high accuracy, the multi-functional advantage replaces the traditional method of observing and controlling gradually.This text utilize one-chip computer control refrigeration plane to purpose to achieve temperature control. Utilize temperature sensor AD590 to realize temperature is gathered in this design. Realized simulation- the figure is changed by converter ADC0809 of A/D. Give it comes to be whole without being realized demand that design to one-chip computer,can time, temperature now not real, such functions as the trouble code shows.This system has high accuracy, high sensitivity, such characteristics as high dependability ,etc.. Can gather the data at a high speed , have real-time character, and have very strong anti-interference ability and automatic circulation and diagnose ability automatically.Keyword: Refrigeration machine, AT89C51, AD590,Temperature control長春工業(yè)大學畢業(yè)論文目 錄第一章 緒論 ………………………………………………………………………………11.1 選題背景………………………………………………………………………………11.2 壓縮機的分類和工作原理……………………………………………………………41.2.1 空氣壓縮機的分類…………………………………………………………41.2.2 空壓機的組成及工作原理 ………………………………………………51.3 制冷機溫度控制要求 ………………………………………………………………6第二章 方案論證 …………………………………………………………………………8第三 章 單片機 …………………………………………………‥………‥…………103.1 AT89C51 單片機簡介 ………………………………‥… ……‥…………………103.2 主要性能參數(shù) ………………………………………‥……………………………103.3 主要功能特性概述 …………………………………‥……………………………113.4 引腳功能說明 ………………………………………‥……‥‥‥‥……………113.5 時鐘震蕩器 ……………………………………‥……‥‥‥‥‥………………13第四章 硬件電路設計………………………………………‥……‥‥……‥………144.1 溫度測量環(huán)節(jié)的設計 ………………………………………………‥‥…………144.1.1 集成溫度傳感器 AD590 …………………………………………………144.1.2 電壓跟隨器-通用運放 UA741……………………………………………154.1.3 運算放大器 0P-07 ………………………………………………………164.1.4 A/D 轉(zhuǎn)換器 ADC0809…………………………………………‥‥………174.2 可編程并行接口 8255 設計………………………………‥………………………204.2.1 并行通信與接口 …………………………………………………………204.2.2 8255A 的編程結構……………………………………‥…………………204.2.3 8255A 的引腳功能…………………………………………………………224.2.4 8255A 的工作方式…………………………………………………………234.3 顯示電路設計 ………………………………………‥‥…………………………25長春工業(yè)大學畢業(yè)論文4.3.1 鍵盤部分設計 ……………………………………………………………254.3.2 顯示環(huán)節(jié)設計 ……………………………………………………………254.4 復位及看門狗電路設計…………………………………………‥‥‥…………264.4.1 DS1232 的結構及特點 ……………………………………………………264.4.2. DS1232 的功能 …………………………………………………… ……274.4.3 使用注意事項……………………………………………………………284.5 時鐘電路設計 ………………………………………………………………………284.5.1 DS1307 實時時鐘簡介………………………………………………………294.6 電源系統(tǒng)設計 ………………………………………………………………………324.7 驅(qū)動器的選用 ………………………………………………………………………344.8 光電隔離 ……………………………………………………‥……………………354.9 控制電路的分析與設計……………………………………………………………374.9.1 電磁繼電器 ………………………………………………………………374.9.2 壓力繼電器的選擇 ………………………………………………………374.9.3 熱繼電器 …………………………………………………………………37第五 章程序設計…………………………………………………………………………395.1 主程序:主要實現(xiàn)制冷機的溫度控制工藝 ………………………………………405.2溫度控制子程序………………………………………………………………………445.3 將顯示緩沖區(qū)中的溫度值送顯示子程序…………………‥………………………455.4壓力,負載消斗子程序………………………………………………………………475.5鍵值子流程……………………………………………………………………………485.6 排水測試處理子程序…………………………………………………………………495.7 是否有鍵按下判斷子程序 …………………………………………………………50第六章軟件設計部分 ………………………………………………‥…………………51結束語 ………………………………………………………‥‥‥‥‥………………63致謝 …………………………………………………………………‥…………………64參考文獻 …………………………………………………………………………………65
鏈接地址:http://italysoccerbets.com/p-146720.html