一种基于光电识别的插卡式电子开关的设计

Design of a Card Switcher Based Photoelectric Recognition

介绍了利用光电识别原理来制作的"基于光电识别的插卡式电子开关",是在原有宾馆客房IC卡的任一面,设定好规定的位置上,印制上反射光线的白点和吸收光线的黑点的图案,IC卡插入开关的相应位置有两只反射和接受红外线的器件,读取相应的高低电平,经过逻辑电路的处理,和原来开关一样驱动继电器而输出电压。改制后的插卡取电开关具有只能用宾馆提供的钥匙IC卡来开门并务必用它开通客房的用电开关,才能正常点灯或使用电器;改变了原来进门后用名片或其它物品来打开用电开关,出门时又不关电源带着钥匙卡就走的现状;既节省了电能又消除了安全隐患,用于宾馆的客房,真正做到一卡通。有一定的使用、推广价值和发展前景。

In this paper, card shape electrical switch based on photo-electricity detect theory are introduced. In the one face of the hotel IC card, with given place, printed the pattern with white and dark point which can reflect or absorb light. The place of switch inserting IC card owns two infrared devices which can reflect or absorb infrared light. So the device output high or low voltage and under the logic circuit process. The switch introduced in this paper make sure that the door and the light indoor should only be open by the same IC card. It changes the condition that the light indoor can be open with other cards, or go out without turning the light off. It can not only save the energy but also cut off the safety problem. It makes sure realize one card only. It has bright market future.