一种基于FPGA的趋势曲线快速连续化设计方法研究

A Fast Continuity Method of Trend Curve Based on FPGA

事故后监视系统是核电厂仪控系统的重要组成部分,它需要将监视的温度、液位等物理量以趋势图的形式展现给操纵员.本研究在常规分段线性插值法的基础上提出了显示采样点多、连续化运算简单的改进插值方法,同时采用减小更新运算数据量的图层平移法增长LCD屏幕显示的采样时间长度,实现趋势曲线快速连续化绘制.

The post-accident monitoring system is an important part of the nuclear power plant＇s instrument control system.It will provide the monitored physical quantities such as temperature and liquid level to operator in the form of trend charts to the operators.Based on the conventional piecewise linear interpolation method,this paper proposes an improved interpolation method with multiple sampling points and continuous operations.The layer shift method that reduces the amount of update operation data is used to increase the length of sampling time displayed on the LCD screen.The trend curve is drawn continuously and continuously.The article described how to use the FPGA to realize the improved interpolation method and shift the graphic layer in detail.The actual results show that the use of the trend curve of the rapid continuous method significantly improves the continuous speed and efficiency of the trend curve.