电容式触摸感应从异国情调到日常

　　电容式触摸感应从异国情调到日常

　　本文介绍了触摸传感和开关技术的发展。电容传感技术。产品被包括独立的电容传感控制器IC和微控制器（MCU），包括触摸感应作为外设功能。

　　电容式触摸感知经历了爆炸式的增长，成为几类消费产品的默认人机界面。平板电脑、智能手机、便携式媒体播放器和GPS系统的用户现在都希望有一个先进而灵敏的触摸界面。反过来，这也改变了用户对智能设备和家用电器市场的期望；现在消费者开始使用TAP、拖动、刷卡和捏的语言进行预编程。高端产品不提供用户交互模式的风险被“酷”。

　　2012推出的Windows 8只增强了触摸界面的扩散，促使平板电脑和个人电脑制造商在便携式计算领域尝试新的格式。那些将触摸现象视为从智能手机/数字助理空间演变而来的人认为微软的Surface产品是一种相对大的屏幕格式；然而其他PC制造商正在用更大的平板式产品测试市场。从它唯一的接口——智能手机——进入键盘不可或缺的空间的角度来看，很可能会看到消费者与技术交互方式的进一步发展。

　　In fact， the touch paradigm appeared in the PC market early in its development. Hewlett-Packard offered a product in the 1980s that used a touch interface， although that used infrared sensing to detect the presence and location of a finger. The first mentions of touch interfaces associated with screens date back decades earlier， with historical accounts quoting an early capacitive-touch system conceived as a means of interfacing with a radar system.

　　Prior to the current upswing in deployment of touch technology， most consumers‘ experience of the technology was limited to a small number of applications， largely in areas such as vending kiosks/ATMs. Those mostly used resistive touch technology， or occasionally infrared （where an X/Y matrix of IR beams is placed immediately above the screen） and were invariably single-point detection systems.