Variation of photoelectric switch signal strength

The photoelectric switch refers to the conversion of the intensity of the light change between the transmitting tube and the receiving tube into a change of current to achieve the purpose of detection. Since the output circuit of the photoelectric switch and the input circuit are electrically insulated and electrically isolated, it can be It is widely used in many occasions. The photoelectric switch sensor is the abbreviation of the photoelectric proximity switch. It uses the movement of the detected object to block or reflect the beam, and the synchronous loop gates the circuit to detect the presence and absence of the object. The limitations of objects are not limited to metals, and all objects that can reflect light can be detected. The photoelectric switch converts the input current into a light signal on the transmitting tube, and then the receiver detects the target mass objects according to the strength or presence of the received light signal. Most photoelectric switches choose infrared light with a wavelength close to visible light.