Design of a New Type of Single-chip Programmable Digital Temperature Measurement System Based on AT89S52

Measurement and control of temperature are widely applied in the use of laser,fiber grating,other industrial and agricultural production and scientific research.Traditional temperature elements include thermocouple and thermal resistance,but the results these elements determined are generally the voltages,which are transformed into correspondent temperature.So,the traditional elements need more external hardware.While the electric circuit and the software debugging are complex,the manufacture cost is high.This article introduces that a new programmable temperature sensor DS18B20,which can replace the simulation temperature sensor and the signal processing electric circuit,communicate directly with the monolithic integrated circuit and complete temperature gathering and data processing.This system,simple in structure and powerful in anti-jamming,fits for measuring temperature on the scene in adverse circumstance and has a broad application prospect.