What is a photoelectric sensor (advantages, types, disadvantages, chattering), is it faulty?
Answer
Photoelectric sensors use light to recognize objects.
(An object is recognized based on the difference between the light emitted by the photoelectric sensor and the light received by the sensor.)
There are three main types: transmissive, mirror-reflective, and reflective.
The advantage is that non-contact detection is possible.
The disadvantage is that detection is unstable (chattering, etc.) due to ambient light and mutual interference.
Therefore, it is necessary to consider the distance between photoelectric sensors and optical axis adjustment.
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