Multi Point Temperature Measurement System Based on DS18B20

In this design, AT89C51 microcontroller is as the core ; KEIL is as the system development platform; The C51 language is used to design program. Multi-point temperature measurement system is designed with the DS18B20 intelligent temperature sensor. Under the Proteus platform simulation, the data results of the system actual operation is analyzed.This design did not use DS18B20's usual 1-wire bus structure, but use the parallel port of 51 single-chip computer. At the same time the temperature of 4 DS18B20 sensors are fast read. Therefore,it realized rapid accurate recognition and processingin in multi-point temperature measurement system of multiple sensors,and this kind of distributed temperature measurement system interface is simple, high precision, strong anti-jamming ability , stable work etc..