基于单片机的温控风扇设计

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