感应探测器探测到有人进入时，感应探测器将收集信号，生成脉冲信号，其后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，以便通知马达在一定时候加力和进入慢行运行。马达得到一定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。
When the induction detector detects that someone has entered, it will collect the signal and generate a pulse signal, and then the pulse signal will be sent to the main controller. After the main controller judges, it will inform the motor to run, and at the same time, it will monitor the motor revolution, so as to inform the motor to apply force and enter into slow running at a certain time. After the motor gets a certain running current, it will operate in the forward direction, and transmit the power to the synchronous belt, and then the synchronous belt will transmit the power to the spreader system to open the door leaf; after the door leaf is opened, the controller will make a judgment, if the door needs to be closed, it will notify the motor to move in the reverse direction and close the door leaf.