Design of Early Warning System for Stranded Children in Car Based on Single Chip Microcom-puter
The interior environment monitoring system of STC89C52 single chip microcomputer is introduced to monitor the real-time temperature and carbon dioxide concentration of the field environment,and its change trend is directly reflected.The digital temperature sensor DS18B20 is used to collect the field ambient temperature,and the Li SGP30 carbon dioxide sensor is used to monitor the carbon dioxide concentration in real time.After sending the signal to the single chip computer,the LCD1602 displays the real-time temperature and carbon dioxide concentration value,which realizes the real-time monitoring process of temperature and carbon dioxide concentration.The system has low cost and reliable operation,and the user can realize the environment monitor-ing by setting the temperature value and the carbon dioxide concentration value.
LCD1602 LCD screenSGP30 carbon dioxide sensorDS18B20 temperature sensorcar stranded children warning sys-tem
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