一種觸摸屏數(shù)據(jù)采集系統(tǒng)的設(shè)計
2022年電子技術(shù)應(yīng)用第4期
艾凱旋1,,2,劉云婷1,劉 洋2
1.中國工程物理研究院 計量測試中心,,四川 綿陽621999,;2.電子科技大學(xué) 電子科學(xué)與工程學(xué)院,,四川 成都610054
摘要: 觸摸屏作為人機交互的主流方式之一,,具有十分重要的研究價值,其中重要方向之一是自電容式觸摸屏的研制,。但目前自電容式觸摸屏數(shù)據(jù)采集電路的電容通道數(shù)量最多只有13個,,嚴重限制了自電容式觸摸屏研制過程中觸摸點數(shù)量的拓展。針對觸摸屏數(shù)據(jù)采集電路電容通道數(shù)量少的問題,,設(shè)計了一種由Arduino控制的觸摸屏數(shù)據(jù)采集系統(tǒng),,包括硬件和軟件兩部分,硬件部分為觸摸檢測電路,,可以檢測最多24個電容通道,,軟件部分為圖形化界面,,可以對自電容式觸摸屏中觸摸點的工作狀態(tài)進行實時檢測,,并以圖形化界面的形式動態(tài)顯示觸摸點的工作狀態(tài)。
中圖分類號: TN41
文獻標識碼: A
DOI:10.16157/j.issn.0258-7998.211903
中文引用格式: 艾凱旋,,劉云婷,,劉洋. 一種觸摸屏數(shù)據(jù)采集系統(tǒng)的設(shè)計[J].電子技術(shù)應(yīng)用,2022,,48(4):122-126.
英文引用格式: Ai Kaixuan,,Liu Yunting,Liu Yang. Design of a data acquisition system for touch screen[J]. Application of Electronic Technique,,2022,,48(4):122-126.
文獻標識碼: A
DOI:10.16157/j.issn.0258-7998.211903
中文引用格式: 艾凱旋,,劉云婷,,劉洋. 一種觸摸屏數(shù)據(jù)采集系統(tǒng)的設(shè)計[J].電子技術(shù)應(yīng)用,2022,,48(4):122-126.
英文引用格式: Ai Kaixuan,,Liu Yunting,Liu Yang. Design of a data acquisition system for touch screen[J]. Application of Electronic Technique,,2022,,48(4):122-126.
Design of a data acquisition system for touch screen
Ai Kaixuan1,2,,Liu Yunting1,,Liu Yang2
1.Metrology and Testing Center,China Academy of Engineering Physics,Mianyang 621999,,China,; 2.School of Electronic Science and Engineering,,University of Electronic Science and Technology of China,Chengdu 610054,,China
Abstract: 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.
Key words : touch detection circuit;touch screen,;data acquisition system,;graphical interface
0 引言
隨著移動設(shè)備和5G時代的到來,大到機械設(shè)備操作界面,,小到人們?nèi)粘J褂玫囊苿与娮釉O(shè)備,,觸摸屏都因其方便快捷的操作方式而被廣泛使用。
觸摸屏作為人機交互的媒介之一,,具有十分重要的研究價值,。隨著人們對觸摸屏功能需求提高,可折疊和柔性觸摸屏的設(shè)計制備是觸摸屏研發(fā)的主要方向之一[1-5],。同樣,,伴隨觸摸屏功能屬性的豐富,基于觸摸屏的應(yīng)用擴展也是重要方向之一,,例如電子皮膚和可穿戴設(shè)備等[6-11],。但在研究過程中,觸摸屏往往需要外部觸摸檢測電路對觸摸屏的功能進行驗證,。Sarwar等人提出了一種基于AD7146的觸摸檢測電路[12],,可實現(xiàn)16個觸摸點工作狀態(tài)的檢測,但只能檢測互電容觸摸屏,。而針對自電容觸摸屏的檢測,,Liu等人和Ye等人分別以AD7147和MPR121為核心設(shè)計了一種觸摸檢測電路[13-14],但限于芯片本身的電容通道數(shù)目約束,,Liu等人設(shè)計的觸摸檢測電路只能檢測12個電容通道的自電容觸摸屏,,而Ye等人設(shè)計的觸摸檢測電路只能檢測最多13個電容通道的自電容觸摸屏,均無法應(yīng)對超過13個電容通道檢測數(shù)量的自電容觸摸屏功能驗證,。
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作者信息:
艾凱旋1,2,,劉云婷1,,劉 洋2
(1.中國工程物理研究院 計量測試中心,四川 綿陽621999,;2.電子科技大學(xué) 電子科學(xué)與工程學(xué)院,,四川 成都610054)
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