基于单片机的触摸屏多小点状目标触点识别

为了提高触摸屏多小点状目标触点识别精准度与效率,提出基于单片机的触摸屏多小点状目标触点识别方法。通过通道驱动、触摸屏处理器、接收通道、存储器和扫描控制逻辑对多小点状目标触点识别芯片进行设计。依据触摸屏菱形结构和单点定位原理,计算触摸屏中所有矩阵块的小点状目标触点坐标。采用MiniGUI方法对全部小点状目标出点坐标进行校准计算,得到全部触点的准确坐标,实现触摸屏的多小点状目标触点识别。实验结果表明,所提方法可在较短的时间内精准找到全部小点状目标触点的坐标,识别效率高且识别精准度高。

In order to improve the accuracy and efficiency of touch screen multi-dot target contact recognition,a single-chip microcomputer based touch screen multi-dot target contact recognition method is proposed.Through the channel drive,touch screen processor,receiving channel,memory and scan control logic,the multi-small dot target contact recognition chip is designed.According to the diamond structure of touch screen and the principle of single point positioning,the coordinates of all matrix blocks in touch screen are calculated.The MiniGUI method is adopted to calibrate and calculate the point coordinates of all small point objects,obtains the exact coordinates of all contacts,and realizes the recognition of multi-small point objects on the touch screen.The experimental results show that the proposed method can accurately find the coordinates of all contact points in a short time,with high identification efficiency and accuracy.