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根据点阵液晶显示模块显示点地址的特点,对点阵液晶屏幕进行了规划,推导出显示点地址与(x,y)坐标点之间的映射关系。在对曲线进行分段拟合的逐点比较法分析的基础上,提出了用“水平、垂直、±45°方向”进行曲线数据拟合的插补算法。论述了其插补的基本原理,给出了插补算法表,用简单的算法实现曲线和实时采集数据曲线的拟合与显示。
According to the dot-matrix LCD display module address characteristics, the dot-matrix LCD screen is planned to derive the display point address and (x, y) coordinate point between the mapping. Based on the point by point comparison analysis of the curve fitting, the interpolation algorithm of curve data fitting with “horizontal, vertical and ± 45 ° directions” is proposed. The basic principle of the interpolation is discussed. The table of interpolation algorithm is given, and the fitting and display of curves and real-time acquisition data curves are realized by a simple algorithm.