红外对射传感器使用的是槽型红外光电开关。红外光电传感器是捕捉红外线这种不可见光，采用专用的红外发射管和接收管，转换为可以观测的电信号。红外光电传感器有效地防止周围可见光的干扰，进行无接触探测，不损伤被测物体。红外光电传感器在一般情况下，有三部分构成，它们分为：发送器、接收器和检测电路。-Infrared correlation of sensor using the infrared electric switch is groove. Infrared electric sensor is capturing infrared this invisible light, using special infrared transmitting tube and receiving tube, converted to electrical signals can be observed. Infrared electric sensor effectively preventing the interference of visible light around, no contact detection, does not damage the object to be tested. Infrared electric sensor in the general case, there are three parts, they are divided into: sender, receiver, and the detection circuit.