通过运用由光电传感器、编码器、运输辊道、翻板机、过钢台架、接近开关组成的钢管自动分选生产线，可较好的解决这一问题。
The problem was soluted by the production line of automatic selection being composed of optical sensor , encoder, roller, plate turnover machine, steel shelf, approach switch.
基于光电式接近开关所有试验条件中环境光源要求部分标准的制定，以及实际的根据标准进行试验结果判定的差异性。
Based on the standard of environment light source requirement in the photoelectric proximity switch tests, and the practical tests complied with this standard, the judgement difference was presented.
输入方式：触点开关，接近开关，霍尔开关，光电开关。
Input Mode: contact switch, proximity switch, Hall switch and photoelectric switch.
硬件部分采用PLC作为控制核心部件，由步进电机、接近开关、光电开关、热电阻、电磁阀等组成。
PLC is as the core of hardware system, and it comprises stepper motor, proximity switch, photoelectric switch, hot resistance, electromagnetic valve et al.
硬件部分采用PLC作为控制核心部件，由步进电机、接近开关、光电开关、热电阻、电磁阀等组成。
PLC is as the core of hardware system, and it comprises stepper motor, proximity switch, photoelectric switch, hot resistance, electromagnetic valve et al.
应用推荐