基于单片机的无接触温度测量系统设计

AbstractMost of the traditional body temperature measuring instruments are designed based on thephysical principle,most of them are designed according to the property principle of mercuryand so on.The temperature value can be judged by reading the scale value.This method is notvery convenient to operate,the scope of use is limited,and the measurement takes a long time.Especially since the outbreak of COVID-19,in order to implement the epidemic preventionand control policy,it is necessary to measure the temperature of the crowd in public places,andthe non-contact temperature measuring device has played an important role.Based on this,thispaper proposes a design scheme of non-contact temperature measurement system based onSTC89C52 MCU.This paper first describes the background and significance of the research,and combs the research status at home and abroad,introduces the main research content;thenanalyzes the principle of infrared temperature measurement and the selection of system designscheme;secondly puts forward the system hardware design scheme,mainly including theminimum system of single-chip microcomputer,power module,infrared temperaturemeasurement module,a/D signal control module,keyboard display module and alarm module;finally The system software program is designed,and the effectiveness of the system is verifiedby testing.The non-contact measurement is completed by infrared temperature measurement,which not only improves the measurement accuracy,but also greatly promotes the efficiency ofepidemic prevention and control.Key words:STC89C52 single chip microcomputer;contactless temperature measurementsystem;infrared temperature measurement;system design