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本文在自制高阻抗转换器、线性放大器的基础上,通过A/D转换接口卡,成功地实现了电势测量系统的计算机化。研制的测量系统具有稳定性好、零点漂移小、测量范围宽且可调、测量精度高等特点。对该系统的采样方式、采样次数及采样结果的统计处理等也进行了研究。系统所涉及的程序均由BASIC语言编写而成。本文还调试了几种分析方法,结果令人满意。采用本系统具有操作简单、灵活、通用性强及自动处理数据、自动打印结果和图形等特点。
In this paper, based on homemade high-impedance converter, linear amplifier, through the A / D converter interface card, successfully realized the potential measurement system of computerized. The developed measuring system has good stability, small zero drift, wide measuring range and adjustable, high measuring accuracy. The system of sampling methods, the number of sampling and sampling results of statistical processing are also studied. The procedure that the system involves is written by BASIC language. This article also debugs several analytical methods, the results are satisfactory. The system has the advantages of simple operation, flexible, versatile and automatic processing of data, automatic print results and graphics and so on.