自动门从实际上了解应该是门的概念的延伸，是门的功用依据人的需求所停止的开展和完善。自动门曾经开展的十分成熟，自动门是指：可以将人接近门的举措(或将某种入门受权)辨认爲开门信号的控制单元，经过驱动零碎将门开启，在人分开后再将门自动封闭，并对开启和封闭的进程完成控制的零碎。
In fact, the automatic door should be the extension of the concept of the door. It is the development and perfection of the function of the door according to people's needs. Automatic doors have been developed very mature, automatic doors refer to: people can approach the door action (or some kind of entrance authorized) identified as the control unit of the open signal, through driving the door to open piecemeal, after people are separated, the door will be automatically closed, and the process of opening and closing complete control piecemeal