苏州市职业大学毕业设计学号苏州市职业大学毕业设计题目基于单片机的温控风扇设计学生姓名：专业班级：18级智能控制技术班学院（部）：电子信息工程学院校内指导教师：(副教授)校外指导教师：(高级工程师)完成日期：2021年5月苏州市职业大学毕业设计摘要现代社会中，众多的工业生产、日常生活都离不开温控风扇的应用，其在工程建设的散热系统、手提电脑处理器降温等有着突出的作用。本研究对温控风扇系统进行分析设计，单片机为其核心构成部分，通过温度传感器DS18B20获取温度信息，输入至单片机内部，单片机与系统设置的温度做比较，发出相应的控制信号，通过ULN2803控制风扇系统对元件进行散热处理，同时能通过判断设定温度与采集温度的温差大小，来确定风扇系统的转速，采用LED八段数码管实现温度显示功能。动态显示当前所处的环境温度和设定温度，并可以通过键盘按钮设定当前温度。键盘部位则可以自主调节设定温度而DS18B20可以测定外部环境温度，然后记录环境温度和设定温度并将其连续及时显示。关键词：单片机、DS18B20、温控、LED苏州市职业大学毕业设计AbstractIn modern society,many industrial production and daily life are inseparable from theapplication of temperature control fan,which plays a prominent role in the cooling system ofengineering construction and the cooling of portable computer processor.In this study,thetemperature control fan system is analyzed and designed.The single-chip microcomputer isthe core component.The temperature information is obtained by the temperature sensorDS18B20 and input to the single-chip microcomputer.The single-chip microcomputercompares with the temperature set by the system and sends out the corresponding controlsignal.The components are cooled by the ULN2803 control fan system,At the same time,thespeed of the fan system can be determined by judging the temperature difference between theset temperature and the collected temperature,and the LED eight segment nixie tube is usedto realize the temperature display function.Dynamic display of the current environmenttemperature and set temperature,and through the keyboard button to set the currenttemperature.The keyboard part can adjust the setting temperature independently,and theDS18B20 can measure the external environment temperature,then record the environmenttemperature and setting temperature,and display them continuously and timely.Key words:MCU,DS18B20,temperature control,LED