ABB PP846A觸摸屏單價(jià)

ABB PP846A觸摸屏單價(jià)

ABB PP846A觸摸屏單價(jià)

ABB PP846A觸摸屏原理圖

ABB PP846A觸摸屏說明書

ABB PP846A觸摸屏接線圖

PP846A原理概述

PP846A電容屏要實(shí)現(xiàn)多點(diǎn)觸控，靠的就是增加互電容的電極，簡單地說，就是將屏幕分塊，在每一個(gè)區(qū)域里設(shè)置一組互電容模塊都是獨(dú)立工作，所以電容屏就可以獨(dú)立檢測到各區(qū)域的觸控情況，進(jìn)行處理后，簡單地實(shí)現(xiàn)多點(diǎn)觸控。 

PP846A電容技術(shù)觸摸面板CTP（Capacity Touch Panel）是利用人體的電流感應(yīng)進(jìn)行工作的。電容屏是一塊四層復(fù)合玻璃屏，玻璃屏的內(nèi)表面和夾層各涂一層ITO（納米銦錫金屬氧化物），·外層是只有0.0015mm厚的矽土玻璃保護(hù)層，夾層ITO涂層作工作面，四個(gè)角引出四個(gè)電極，內(nèi)層ITO為屏層以保證工作環(huán)境。

PP846A當(dāng)用戶觸摸電容屏?xí)r，由于人體電場，用戶手指和工作面形成一個(gè)耦合電容，因?yàn)楣ぷ髅嫔辖佑懈哳l信號，于是手指吸收走一個(gè)很小的電流，這個(gè)電流分別從屏的四個(gè)角上的電極中流出，且理論上流經(jīng)四個(gè)電極的電流與手指頭到四角的距離成比例，控制器通過對四個(gè)電流比例的精密計(jì)算，得出位置。

PP846A可以達(dá)到99%的·確度，具備小于3ms的響應(yīng)速度。

IMDSI142

NTDI21-A 2

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