An introduction to the working principle of Banner photoelectric sensors

Create Date: 2024-8-30 12:03:23|Source: BANNER

Photoelectric sensors are controlled by converting changes in light intensity into changes in electrical signals.

In general, photoelectric sensors are composed of three parts, which are divided into: transmitter, receiver and detection circuit.

The transmitter is aimed at the target emitting beam, which is typically sourced from semiconductor light sources, light-emitting diodes (LEDs), laser diodes, and infrared emitting diodes. The beam is emitted uninterruptedly, or the pulse width is changed. The receiver is composed of a photodiode, a phototransistor, and a photocell. In front of the receiver, optical elements such as lenses and aperture are installed. Behind it is the detection circuit, which filters out the valid signal and applies it.

In addition, there are emission plates and optical fibers in the structural elements of the photoelectric switch.

Triangular reflectors are structurally robust firing devices. It is made up of very small triangular pyramidal reflective material, which is able to accurately return the beam from the reflector, which is of practical significance. It can vary the emission angle from 0 to 25 from the optical axis, so that the beam is almost reflected from one emission line and back from that reflected line.
An introduction to the working principle of Banner photoelectric sensors

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