论文部分内容阅读
介绍了应用单片微机改造早期万能材料试验机的硬件和软件结构，给出了求和的数学模型和简捷的算法，阐述了提高数据采集分辨率和准确度的方法以及应用ＰＰ４０打印机作ｘ—Ｙ函数记录仪，实现智能打印和绘图的思路。转换电路中，用１片八位Ａ／Ｄ和Ｄ／Ａ芯片实现１６位Ａ／Ｄ转换。改造好的试验机提高测量效率数十倍，测量精度亦大大提高；仅投资几千元即可达进口几十万元设备的功能。
This paper introduces the hardware and software structure of early universal material testing machine based on single chip microcomputers, gives the mathematical model of summation and simple algorithm, expounds the methods of improving the resolution and accuracy of data acquisition and the application of PP40 printer as x- Y function recorder, intelligent printing and drawing ideas. Conversion circuit, with a 8-bit A / D and D / A chip to achieve 16-bit A / D conversion. Improved test machine to improve the measurement efficiency of dozens of times, the measurement accuracy is greatly improved; only a few thousand dollars to invest up to hundreds of thousands of yuan to import equipment functions.