Abstract
The design is based on single chip microcomputer AT89S52 as the core of the temperature control system. The temperature sensor DS18D20 to collection temperature, and the way to digital signal transfer to the microcontroller. Heating process: through security circuit to set the heating temperature, and will set in the digital temperature display on the tube. And starting a heating heating circuit. If more than scheduled temperatures, the start is roaring an alarm. In order to prevent interference access the photoelectric isolating circuit. This paper mainly introduced the control system hardware part includes: temperature detection circuit, heating circuit, digital pipe display circuit, alarm circuit, keys of circuit and some interface circuit. Through the single chip microcomputer to signal processed, achieve the purpose of temperature control.
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