Temperature measuring and the controlling are very common in the project practice and are widely adopted in the industry production . In view of development direction of this domain, this paper introduces a temperature measuring system which take the AT89C51 single chip microcontroller as an controlling unit and the digital temperature sensor --DS18B20, as temperauture measuring transducer. The collected temperature signals of the digital temperature transducer--DS18B20 are processed by the single chip microcontroller. The processed temperature signals are displayed on the LCD.This system has achieved prompt and precise temperature measuring and the super warnning function by sound and light .This paper has finished the design of hardware curcuit and compiled related software program..
Key word: Temperature measuring；Sensor；Single Chip Microcontroller ；LCD Display
