Advantages and disadvantages of reflective photoelectric switches

Reflective photoelectric switch is a common photoelectric sensor widely used in the field of industrial automation. Compared with other types of photoelectric switches, reflective photoelectric switches have unique characteristics and application scenarios. Below, we will compare the working principle, advantages, disadvantages, and applications.
working principle
The working principle of a reflective photoelectric switch is to detect the presence of an object by reflecting the light emitted by the transmitter back to the receiver. According to different reflection methods, reflective photoelectric switches can be divided into the following types:
General reflective type: Detection is carried out by reflecting the beam of light from a reflective plate or the object being detected itself.
Backboard reflection type: detects objects at large distances by reflecting the background light on the reflection board.
Reflective type with fiber optic: Fiber optic serves as the transmission medium for light beams, enabling object detection over long distances.
Reflective type with vibrating mirror: The light beam is reflected onto the object to be detected through the vibrating mirror, suitable for scenes that require flexible adjustment of the detection angle.
advantage
Easy installation: Reflective photoelectric switches usually only need to be installed in one position, without the need to install transmitters and receivers in two positions like reflective photoelectric switches.
Flexible use: Reflective photoelectric switches can adapt to different detection needs by adjusting the reflection angle and sensitivity.
Strong anti-interference ability: By using polarizing filters and reflective photoelectric switches, external light interference can be reduced, improving detection accuracy.
shortcoming
Limited detection distance: The detection distance of reflective photoelectric switches is usually shorter than that of reflective photoelectric switches, especially when using diffuse reflection type.
The detection effect of reflective photoelectric switches is greatly affected by the surface material, color, and reflectivity of the object being detected