介绍了基于激光测距传感器的铁轨测距系统的设计原理。
This thesis recommends the design for principle that the distance measurement system of rail base on distance laser sensor.
该系统利用PLC作为控制核心，采用激光测距传感器来检测垂直焊缝。
In this system, the laser distant sensor is used to measure the vertical welding line and the PLC is used to control the system.
将激光测距传感器安装在设计的机械装置的导轨上，机械装置在钢轨上可以很方便的固定和拆除。
The Laser displacement sensor was mounted on the guide of mechanical device which can be fixed and remove easily.
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