In theory, automatic doors should be an extension of the concept of doors, and the functions of doors are developed and improved according to human needs. Automatic doors have been developed very maturely. Automatic doors refer to: a control unit that can recognize the action of a person approaching the door (or a certain entry authorization) as a door opening signal, open the door through the drive system, and automatically close the door after the person leaves, and control the opening and closing process.
