3、cessorSTC89C52isdesignedinthispaper.Inthissystem,one-wiredigitalthermometerDS18B20isusedtotransformanalogtemperaturesignaltodigitalsignal,throughfourreal-timedigitalofadigitalthermometertemperature.by setting the button,setthethermostattemperatureatthetime of operati
4、on, and digital display of the temperature.Single-chipMicrocomputerusedPIDcontrolalgorithmtoprocessthedatameasurementanddatasettings,andcalculatethePWMsignal,isoutputtedandmagnifiedtodriveasolidstaterelaysothatthepowerofheatcircuitisadjusted.Thusthetemperatureoftheob