基于单片机温度检测系统说明书设计____论文.doc

长春大学 课程设计纸 第 第 PAGE \* MERGEFORMAT 12 页 共 NUMPAGES \* MERGEFORMAT 22 页 摘要 随着现代信息技术的飞速发展和传统工业改造的逐步实现，温度自动检测和显示系统在很多领域得到广泛应用。人们在温度检测的准确度、便捷、快速等方面有着越来越高的要求。而传统的温度传感器已经不能满足人们的需求，其渐渐被新型的温度传感器所代替。? 本文设计并制作了一个简易温度计。本设计采用了单片机STC89C52和温度传感器DS18B20组成了温度自动测控系统，可根据实际需要任意设定温度值，并进行自动控制。在此设计中利用了STC89C52单片机作为主控制器件，DS18B20作为测温传感器通过LCD数码管串口传送数据，实现温度显示。通过DS18B20直接读取被测温度值，进行数据转换，能够设置温度上下限来设置报警温度。并且在到达报警温度后，系统会自动报警。? 本文设计是从测温电路、主控电路、报警电路等几个方面来分析说明的。该器件可直接向单片机传输数字信号，便于单片机处理及控制。另外，该温度计还能直接采用测温器件测量温度。从而简化数据传输与处理过程。此设计的优点主要体现在可操作性强，结构基础简单，拥有很大的扩展空间等。? ? 关键词：单片机；温度传感器；温度计；报警  Abstract With?the?rapid?development?of?modern?information?technology?and?the?gradual?transformation?of?traditional?industries?to?achieve,?automatic?temperature?detection?and?display?systems?are?widely?used?in?many?fields.?People?in?the?temperature?measurement?accuracy,?convenient,?rapid,?and?has?a?growing?demand.??This?article?was?designed?and?produced?a?simple?thermometer.?This?design?uses?a?microcontroller?STC89C52?and?temperature?sensor?DS18B20?automatic?temperature?control?system?formed?can?be?arbitrarily?set?the?temperature?according?to?the?actual?value?and?for?automatic?control.?In?this?design?using?the?STC89C52?microcontroller?as?the?main?control?device,?DS18B20?as?an?LCD?digital?temperature?sensor?tube?through?the?serial?transmission?of?data,?to?achieve?temperature?display.?DS18B20?measured?by?direct?reading?temperature?values,?data?conversion,?to?set?the?temperature?to?set?the?alarm?on?the?lower?temperature.?And?the?temperature?reaching?the?alarm,?the?system?will?automatically?alarm.??This?design?is?from?the?temperature?measurement?circuit,?main?control?circuit,?alarm?circuit,?and?several?other?aspects?of?the?note.?The?device?can?transmit?digital?signals?directly?to?the?microcontroller,?easy?to?handle?and?control?MCU.?In?addition,?the?thermometer?temp