自动门禁系统在图书馆管理中的应用及“硬件插件化”提出

摘要

In order to solve the gates can not be quickly closed, we can take advantage of through-beam photoelectric sensors：the most before the start of a credit card when the gates open,this person walked into the gates;this time the speed of light blocked off, the sensor can quickly identify and access to remain open;when out of the access control system, which will immediately shut down.%为了解决门闸不能快速关闭，我们可以利用对射式光电传感器：最开始前一个人刷卡这时候门闸打开，此人走进门闸；这时候人把光速挡着，传感器能迅速识别并使门禁持续开放；当人走出门禁系统的时候，这时候就会立刻关闭。