System of Numeral Temperature Testing Based on ARM and DS18B20

The paper introduces a new system of temperature testing.It uses ARM S3C44BOX made by SAMSUNG as its microcontroller,with the single-bus-digital sensor DS18B20 as a temperature measurement component.The strongpoint of this system is described as: circuit-simplified,high dependability,easy-installing,and easy-maintenance.The contents of this paper include the introduction of DS18B20,the principle of the testing system,and the design of hardware and software.