感应自动门机的种类很多，且在选购自动门一篇中已有简单介绍，在此，仅以平移型感应自动门机为例介绍一下自动门机的基本工作原理。 首先，平移式自动门机组由以下部件组成： （1） 主控制器：它是自动门的指挥中心，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。 （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； （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。 （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。 （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。 （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。 （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。

There are many kinds of induction door machines, and a brief introduction has been made in the selection of automatic doors. Here, taking the translational induction automatic door machine as an example, we introduce the basic working principle of the automatic door machine. First of all, translation type automatic door unit comprises the following components: (1) the main controller: it is automatic door command center, through internal coding large-scale integrated block instruction program, sends out the corresponding instruction, command motor or electricity lock class system; at the same time people through the main controller adjust the door open, open the speed range. (2) induction detector: responsible for the acquisition of external signals, as people's eyes, when moving objects into its scope of work, it is a pulse signal to the main controller; (3) the power motor: open the door and provide the initiative, door control acceleration and deceleration operation. (4) the entrance of the door fan: like the rail of a train, the hoisting of the door is restricted to the wheel system to make it travel in a specific direction. (5) door fan hoist wheel system: used to hang active door fans and drive the door fan under dynamic traction. (6) synchronous belt (some manufacturers use a triangular belt): used to transmit the power produced by the motor and pull the hoisting system of the door. (7) the lower guidance system: it is the guiding and positioning device at the lower part of the door fan to prevent the door fan from swinging before and after the door fan is running.