溫度計的制作
摘要：單片機在日用電子產(chǎn)品中的應(yīng)用越來越廣泛，溫度則是人們?nèi)粘Ｉ钪谐３Ｐ枰獪y量和控制的一個量。本文采用AT89S51單片機、溫度傳感器DS18B20和液晶顯示器1602A從硬件和軟件兩方面介紹了一款簡易數(shù)字溫度計的設(shè)計過程， 并對硬件原理圖和程序流程圖作了簡潔的描述，同時本文介紹了DS18B20和1602A內(nèi)部結(jié)構(gòu)及工作時序，實踐證明，該數(shù)字式溫度計的測溫范圍為-55℃——+125℃，可精確到0.0625℃，具有測溫精確度高，控制性能良好等特點。該溫度計完全適用于一般的應(yīng)用場合，也可以在高級溫報警，遠距離多點測溫控制等方面進應(yīng)用。
關(guān)鍵詞：溫度傳感器；單片機；液晶顯示器
The thermometer
Abstract: the microcomputer in daily electronic products is widely used, the temperature is in daily life, people often need measurement and control of a quantity. Based on AT89S51 and temperature sensor DS18B20 and LCD 1602A from two aspects of hardware and software are introduced a simple digital thermometer design process, and the hardware diagram and program flow chart for a simple description, the paper introduces DS18B20 and internal structure and working 1602A sequence, and proved that the digital temperature range for the thermometer c + + - 55-125 ° c, accurate to 0.0625 degrees Celsius temperature measurement precision, good performance, high control etc. The thermometer completely suitable for general applications, also can be in high temperature alarming, distance etc temperature control points into application.
Key words: temperature sensor; SCM; LCD display
目 錄
1 溫度計的制作 ...................................................................1
1.1 主控制器........................................................................1
1.2 傳感器DS18B20 ..............................................................2
1.3 液晶顯示器 ...................................................................6
1.4 溫度計設(shè)計 .....................................................................8
參考文獻 ...........................................................................10
謝辭 .................................................................................11
附錄
1. 成績評定表 ........................................................................12