利用小波分析进行心电图的自动分析，包括QRST的识别等，QT间期计算(Automatic analysis of electrocardiogram by wavelet analysis, including identification of QRST, etc.)

心电图绘制主思想是利用QtCharts自带的函数和方法，先初始化心电图网格线，绑定数据，然后开启定时器进行绘制。在绘制到最右边的时候，使用Qtcharts数据集series进行已有数据替换可以了。(The main idea of ECG drawing is to use QtCharts's own functions and methods to initialize the ECG gridlines, bind the data, and then open the timer to