一种触摸屏数据采集系统的设计  

Design of a data acquisition system for touch screen

作　　者：艾凯旋 刘云婷 刘洋[2] Ai Kaixuan;Liu Yunting;Liu Yang(Metrology and Testing Center,China Academy of Engineering Physics,Mianyang 621999,China;School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China)

机构地区：[1]中国工程物理研究院计量测试中心,四川绵阳621999 [2]电子科技大学电子科学与工程学院,四川成都610054

出　　处：《电子技术应用》2022年第4期122-126,共5页Application of Electronic Technique

摘　　要：触摸屏作为人机交互的主流方式之一,具有十分重要的研究价值,其中重要方向之一是自电容式触摸屏的研制。但目前自电容式触摸屏数据采集电路的电容通道数量最多只有13个,严重限制了自电容式触摸屏研制过程中触摸点数量的拓展。针对触摸屏数据采集电路电容通道数量少的问题,设计了一种由Arduino控制的触摸屏数据采集系统,包括硬件和软件两部分,硬件部分为触摸检测电路,可以检测最多24个电容通道,软件部分为图形化界面,可以对自电容式触摸屏中触摸点的工作状态进行实时检测,并以图形化界面的形式动态显示触摸点的工作状态。As one of the mainstream ways of human-computer interaction,touch screens have very important research value.One of the important directions is the development of self-capacitive touch screens.However,the current self-capacitive touch screen data acquisition circuit has only 13 capacitive channels at most,which severely limits the expansion of the number of touch points in the development of self-capacitive touch screens.In view of the problem of the small number of capacitive channels in the touch screen data acquisition circuit,a touch screen data acquisition system controlled by Arduino is designed,including hardware and software.The hardware part is a touch detection circuit,which can detect up to 24 capacitance channels,and the software part is a graphical interface.It can detect the working status of the touch point of the self-capacitive touch screen in real time,and dynamically display the working status of touch points in the form of graphical interface.

关 键 词：触摸检测电路 触摸屏 数据采集系统 图形化界面 

分 类 号：TN41[电子电信—微电子学与固体电子学]