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本文阐述了为测量面积而开发的电子系统。采用一台带有光笔的X-Y标准记录仪,当测试时给出一个变化状态的TTL逻辑信号,在通过环面积的任何时候扫描面积。根据如上信息,微机用编制好的程序,按辛普逊法则计算出面积,并用七段显示器显示其结果。本文还研究了在测量中和它本身固有误差的来源和系统减少误差的改进措施。另外,本系统也可以用于测定物体的周界和矩心。
This article describes the electronic system developed for measuring area. A X-Y standard recorder with a light pen is used to give a TTL logic signal of varying state while testing, scanning the area any time it passes through the annulus. According to the above information, the computer uses a programmed program to calculate the area according to Simpson’s law and display the result with a seven-segment display. This paper also studies the sources of error and its inherent error in measurement and its improvement measures to reduce errors. In addition, the system can also be used to measure the perimeter and centroid of objects.