Description of working principle and characteristics of photoelectric switch

Photoelectric switch is actually a simple term for photoelectric proximity switch, because the detection object blocks and reflects the light beam, this kind of switch takes advantage of this, even if it is a metal material, it can be detected, and only objects with reflected light effects are needed. Detected. The photoelectric switch is internally converted, and the current switch is converted into an optical signal output, and then the receiver detects the object according to the intensity of the optical switch. Of course, in many products, this switch is made into a smoke alarm. In industrial production, it can be used It is more useful to record the operation of the machine. Ordinary contact travel switches not only run slowly and have low accuracy, but also easily damage their internal structure when detecting objects, resulting in shortened life. However, the effect of the transistor proximity switch is not very stable, and it cannot be directly detected for non-metallic materials, but the photoelectric switch in these switches will not be enough, and all of them can be overcome. In addition, the photoelectric switch has a small area and is easy to transport, and the object detection effect is very good, and the service life is also very long. The light speed change processing is adopted. Through the internal components and the action of the medium, the light beam will be reflected back to the detected object.