安全回路-这个电路上有校验各个安全部件是否动作的安全感应开关，主机的过热保护开关，端站的上下极限开关，底坑轿顶机房的急停开关。

Safety circuit - there are safety induction switches on this circuit to check whether each safety component acts, overheat protection switch of main engine, upper and lower limit switch of terminal station, emergency stop switch of pit car roof machine room.

门锁回路-每个厅门的门锁触点开关。用于检测每个厅门是否都是关闭状态

Door lock return - door lock contact switch for each hall door. It is used to detect whether each hall door is closed

平层感应器（选层器）-一般是光电开关或者电磁感应开关加隔磁板，现在也有读磁条的APD，用于判断楼层的平层位置

Leveling inductor (layer selector) - generally photoelectric switch or electromagnetic induction switch plus magnetic separator. Now there is APD for reading magnetic stripe, which is used to judge the leveling position of the floor

主机上的旋转编码器-目前大部分都整合在主机上，一般是增量型的旋转编码器，用于计算电机速度，配合PID算法计算变频器输出。

Rotary encoder on the host - at present, most of them are integrated on the host, generally incremental rotary encoder, which is used to calculate the motor speed and calculate the inverter output with PID algorithm.

----以上仅提到一些普通用户不太容易知道的，

----The above only mentioned some common users are not easy to know,

结合评论中的提醒还有安装在轿门上的光幕或者安全触板，以及一般安装在轿底的称重传感器。

Combined with the reminders in the comments, there are light screens or safety touch panels installed on the car door, and load cells generally installed on the car bottom.