PDF《面向汽车应用的电容式触摸开关》

7 所示. 图图图图7:采用车型专用按键的数字车窗锁 :采用车型专用按键的数字车窗锁 :采用车型专用按键的数字车窗锁 :采用车型专用按键的数字车窗锁 L S x

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5 警告!当您向管理层推荐这种功能时,将会有人(最有可能来自市场部门)表示担心,就是当车窗被摇 下时人们就无法打开车锁. CapSense 开关的应用并不局限于汽车的内部.车门把手传感器就是一个理想的实例.对于该应用而 言,金属把手被用作传感器.使该传感器具有极高的灵敏度,以便用作一个靠近探测器.当检测到有一 只手逐渐靠近车门时,电源将被加至需要高得多的功率的安全硬件上.作为汽车报警系统的一部分,可 以把该结果记录下来,并通知车主有人反复尝试接近汽车的车门把手.(甚至有可能拨打车主的手 机.) 由于没有机械部件,而且可以很容易地与各种曲面相吻合,触摸感应电容器开关因而堪称面向当今汽车 应用的理想技术.它们是传统开关的成本-效益型替代方案,并使得设计师能够实现具有新颖性和创新性 的客户面板功能. Cypress Semiconductor

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