AB变频器驱动器20AD011A3AYANC0
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从技术原理来区别触摸屏，可分为五个基本种类：矢量压力传感技术触摸屏、电阻技术触摸屏、电容技术触摸屏、红外线技术触摸屏、表面声波技术触摸屏。其中矢量压力传感技术触摸屏已退出历史舞台；红外线技术触摸屏价格低廉，但其外框易碎，容易产生光干扰，曲面情况下失真；电容技术触摸屏设计构思合理，但其图像失真问题很难得到根本解决；电阻技术触摸屏的定位准确，但其价格颇高，且怕刮易损；表面声波触摸屏解决了以往触摸屏的各种缺陷，清晰不容易被损坏，适于各种场合，缺点是屏幕表面如果有水滴和尘土会使触摸屏变的迟钝，甚至不工作。

按照触摸屏的工作原理和传输信息的介质，把触摸屏分为四种，它们分别为电阻式、电容感应式、红外线式以及表面声波式。每一类触摸屏都有其各自的优缺点，要了解哪种触摸屏适用于哪种场合，关键就在于要懂得每一类触摸屏技术的工作原理和特点。下面对上述的各种类型的触摸屏进行简要介绍一下：

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五线电阻技术触摸屏的基层把两个方向的电压场通过精密电阻网络都加在玻璃的导电工作面上，我们可以简单的理解为两个方向的电压场分时工作加在同一工作面上，而外层镍金导电层只仅仅用来当作纯导体，有触摸后分时检测内层ITO接触点X轴和Y轴电压值的方法测得触摸点的位置。五线电阻触摸屏内层ITO需四条引线，外层只作导体仅仅一条，触摸屏得引出线共有5条。

特点：解析度高，高速传输反应。表面硬度高，减少擦伤、刮伤及防化学处理。同点接触3000万次尚可使用。导电玻璃为基材的介质。一次校正，稳定性高，永不漂移。五线电阻触摸屏有高价位和对环境要求高的缺点。

3、电阻屏的局限

不管是四线电阻触摸屏还是五线电阻触摸屏，它们都是一种对外界完全隔离的工作环境，

不怕灰尘和水汽，它可以用任何物体来触摸,可以用来写字画画，比较适合工业控制领域及办公室内有限人的使用。电阻触摸屏共同的缺点是因为复合薄膜的外层采用塑胶材料，不知道的人太用力或使用锐器触摸可能划伤整个触摸屏而导致报废。不过,在限度之内，划伤只会伤及外导电层，外导电层的划伤对于五线电阻触摸屏来说没有关系，而对四线电阻触摸屏来说是致命的。

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