為了提高觸摸屏多小點狀目標觸點識別精準度與效率,提出基于單片機的觸摸屏多小點狀目標觸點識別方法。通過通道驅動、觸摸屏處理器、接收通道、存儲器和掃描控制邏輯對多小點狀目標觸點識別芯片進行設計。依據觸摸屏菱形結構和單點定位原理,計算觸摸屏中所有矩陣塊的小點狀目標觸點坐標。采用MiniGUI方法對全部小點狀目標出點坐標進行校準計算,得到全部觸點的準確坐標,實現觸摸屏的多小點狀目標觸點識別。實驗結果表明,所提方法可在較短的時間內精準找到全部小點狀目標觸點的坐標,識別效率高且識別精準度高。

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.

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