Application range of photoelectric switches

A photoelectric switch is a sensor that converts the change in light intensity between the transmitter and receiver into a change in current to achieve the purpose of detection. It is suitable for various occasions such as material level detection and liquid level control.

The photoelectric switch is manufactured using integrated circuit technology and SMT surface mounting technology, and has intelligent functions such as delay, broadening, external synchronization, anti-interference, high reliability, stable working area, and self-diagnosis. This new photoelectric switch is an electronic switch with an active photoelectric detection system. It uses cold light sources such as red, green, and blue light. It can quickly and harmlessly control the state and function of various solids, liquids, transparent bodies, blackbodies, soft bodies, and smoke. It has the advantages of small size, multiple functions, long service life, high accuracy, fast response speed, long detection distance, and strong resistance to optical, electrical, and magnetic interference.

Currently, photoelectric switches have been applied to crop level detection, liquid level control, product counting, width discrimination, speed detection, fixed length shearing, hole position recognition, signal delay, automatic door sensing, color code detection, drilling and shearing, and safety protection. In addition, it can also be used in banks, warehouses, stores, offices, and other places that require the use of infrared light for concealed theft prevention.

The commonly used infrared photoelectric switch detects the presence of an object by sensing the intensity of the reflected light from a synchronous circuit based on the reflection principle of the object to the near infrared beam. Photoelectric sensors first emit an infrared beam that reaches or reflects through an object or mirror. The photoelectric sensor receives a reflected beam of light and judges the presence of an object based on the beam intensity. There are also many types of infrared photoelectric switches, generally including mirror reflection type, diffuse reflection type, opposed reflection type, optical fiber type, slot type photoelectric switches, etc.