基于AT89C52的太陽(yáng)能熱水器控制系統(tǒng)

包括開題報(bào)告，任務(wù)書，中期檢查表，論文

目  錄
目錄 I
摘要 II
Abstract III
第一章 緒論 1
1.1  開發(fā)背景及意義 1
1.2  本文研究的內(nèi)容 2
第二章 系統(tǒng)硬件設(shè)計(jì) 3
2.1  系統(tǒng)總體功能概述 3
2.2  核心芯片選擇 4
2.3  液位檢測(cè) 5
2.3.1  液位傳感器 5
2.3.2  AD轉(zhuǎn)換電路 6
2.4  溫度檢測(cè) 8
2.5  顯示電路 9
2.5.1  溫度顯示電路 9
2.5.2  液位顯示電路 10
2.6  電源電路 12
第三章 系統(tǒng)軟件設(shè)計(jì) 13
3.1  軟件功能概述 13
3.2  主程序設(shè)計(jì) 13
3.3  定時(shí)器T0中斷程序 14
3.4  定時(shí)器T1中斷程序 15
3.5  A/D轉(zhuǎn)換及液位顯示程序 15
3.6  溫度采集程序 16
3.7  LED顯示程序 17
結(jié)論 19
參考文獻(xiàn) 20
附錄 21

摘  要
當(dāng)前能源緊缺，用電緊張，太陽(yáng)能是綠色能源，得到廣大用戶的喜愛。本文介紹了用液位檢測(cè)集成芯片LM1042、溫度傳感器DS18B20和A/D轉(zhuǎn)換芯片ADC0804,以AT89C52 單片機(jī)作為主控元件的太陽(yáng)能熱水器液位和溫度顯示及控制系統(tǒng)。對(duì)太陽(yáng)能熱水器的控制系統(tǒng)進(jìn)行了全新的智能設(shè)計(jì),可以實(shí)現(xiàn)：水箱中水位、水溫的智能控制與顯示；自動(dòng)排空水箱至淋浴器間管道(也是上水管道) 中的存水；智能處理再利用管道排空的水等。使太陽(yáng)能熱水器操作性能、利用功能、擴(kuò)展范圍、產(chǎn)品檔次等諸多方面得到提高。解決了普通太陽(yáng)能熱水器上水時(shí)水滿益出；上(下) 水管道需要保溫；使用前需要放出水管中大量冷水等問(wèn)題。

關(guān)鍵詞：太陽(yáng)能；液位控制；溫度控制；水管排空
 
Abstract
    With the current energy and power shortage, solar energy which is green energy is becoming more and more popular with the majority of users. This article describes the control system of solar energy water-heater based on a liquid level detection LM1042, temperature sensor DS18B20, A / D conversion chip ADC0804 and AT89C52 microcontroller as a master device .Carried on an all new intelligence design to the control system, it can carry out: Intelligence controlling and manifestation of water level, water temperature in the water tank; Automatic emptying pipe line row between tank and shower machine to save water; The intelligence processing and making use of the water again. These improve the performance of the solar energy water-heater greatly. The system solves some problems which a common solar energy water –heater exists such as, overflowing when the tank is full; the pipe line need a heat preservation ;Need to let out in great quantities cold water in the pipe line before use.

Key words: solar energy; liquid control; temperature display; pipe line row empty