The automatic door unit consists of the following components:

(1)主控制器：它是自动门的指挥，通过内部编有指令程序的大规模集成块，发出相应指令，指挥马达或电锁类系统工作;同时人们通过主控器调节门扇开启速度、开启幅度等参数。

(1) Main Controller: It is the command of automatic doors. It sends out corresponding instructions through large-scale integrated blocks with internal instruction programs to direct motor or electric lock systems. At the same time, people adjust the opening speed and opening amplitude of door fans through the main controller.

(2)感应探测器：负责采集外部信号，如同人们的眼睛，当有移动的物体进入它的工作范围时，它就给主控制器一个脉冲信号。

(2) Induction detector: responsible for collecting external signals, like people's eyes, when a moving object enters its working range, it gives the main controller a pulse signal.

(3)动力马达：提供开门与关门的主动力，控制门扇加速与减速运行。

(3) Power motor: Provide the initiative to open and close the door, control the acceleration and deceleration of the door.

(4)门扇行进轨道：就象火车的铁轨，约束门扇的吊具走轮系统，使其按特定方向行进。

(4) Door-fan traveling track: like the railway track of a train, the lifting wheel system of the door-fan is restrained to move in a specific direction.

(5)门扇吊具走轮系统:用于吊挂活动门扇，同时在动力牵引下带动门扇运行。

(5) Door-fan crane wheel system: used for hanging movable door-fan and driving the door-fan to run under power traction.

(6)同步皮带(有的厂家使用三角皮带)：用于传输马达所产动力，牵引门扇吊具走轮系统。

(6) Synchronized belt (some manufacturers use triangular belt): used to transfer the power produced by motor, traction door and fan suspension wheel system.

(7)下部导向系统：是门扇下部的导向与定位装置，防止门扇在运行时出现前后门体摆动。当门扇要完成一次开门与关门，其工作流程如下：感应探测器探测到有人进入时，将脉冲信号传给主控器，主控器判断后通知马达运行，同时监控马达转数，以便通知马达在时候加力和进入慢行运行。

(7) Lower guiding system: It is the guiding and positioning device of the lower part of the door fan to prevent the front and rear door body from swinging when the door fan is running. When the door fan is to open and close once, its working flow is as follows: when the induction detector detects someone entering, the pulse signal is transmitted to the main controller, which notifies the motor to run after judging, and monitors the motor speed, so as to inform the motor to add force and enter slow running at the time.

马达得到运行电流后做正向运行，将动力传给同步带，再由同步带将动力传给吊具系统使门扇开启;门扇开启后由控制器作出判断，如需关门，通知马达作反向运动，关闭门扇。

After the motor gets the running current, it runs forward, transfers the power to the synchronous belt, and then transfers the power to the hanger system by the synchronous belt to make the door fan open. After the door fan opens, the controller makes the judgment, if it needs to close, notifies the motor to do the reverse movement, and closes the door fan.