微机在热电偶标定实验中的应用

The Application of Microcomputer in Experiment on Demarcating Thermocouple

对热电偶标定实验的传统方法进行了分析，指出其不足之处，提出采用微机改进实验装置。数据采集采用实时时钟定时的方法进行，然后通过Ａ／Ｄ转换器将模拟信号转变成数字信号，最后将标定实验结果用图形的方式直观地显示在屏幕上。

A traditional method of experiment on demarcating thermocouple is analyzed and its shortcoming is indicated.It is proposed that the experimental device for demarcating thermocouple should be advanced through application of a microcomputer.The timing for data sampling is carried out in a real time clock way and then the analogue signal is converted into digital information through a A/D converter.Finally, the results of demarcating thermocouple are audio-visually displayed on the screen in a graphic mode.