This article describes the composition of multi-temperature distributed temperature measurement system based on AT89C52 microcontroller and temperature sensor DS18b20 and Designed its system structure and software programs. The system's actual needs, set DS18b20 temperature range 0 ℃ ~ 100 ℃, as to display rich content and two-line display with LCD1602 chips, respectively, show that the temperature sensor temperature measurement, temperature measurement of the maximum upper limit and the time default.
The practical application shows. The system is simple, anti-interference ability, suitable for harsh environments the scene temperature measurement.The system can be used in many fileds such as the temperature measurement system of warehouse,the air conditioning control of building and the monitor of productive process.
Key word: DS18b20, distributional, 1602
