Temperature Monitored System Based On AT89S52 Single-chip Computer and DS18B20 Temperature Sensor

In this paper, a new remote temperature monitored control system is introduced. In this system, a AT89S52 single-chip computer is applied as a control unit and a Dallas chip DS18B20 is applied too as a digital temperature sensor. The system possess of many excellences, including its novel structure, simple circuit and expedient control. The upper and lower limit value of the temperature controlled by this system can be set discretionarily and an alarm will be given by system if the temperature exceeds the limits.