用PLC作为控制单元，光栅尺、编码器作为测量元件，实现枕簧的自动检测与分组。
An automatic inspection and grouping of the bolster spring is realized with PLC as the control unit and linear encoder and rotary encoder as the measuring units.
单片机自动检测各工作单元，一旦出现故障点即启动通讯模块向中心计算机传输数据信号。
The monolithic processor automatically detects each working unit of, once the fault point occurs, a communication module is started to transfer the data signal to a central computer.
单元自动检测光束并不会交叉。
The unit automatically detects the beam and will not cross it.
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