Classification of photoelectric sensors

Photoelectric switches convert the incoming current into a light signal at the transmitter and shoot it out, and then the receiver detects the target object based on the strength or presence of the light received. Most photoelectric switches use infrared light waves with wavelengths close to visible light. Today we go into detail about the classification type of photoelectric switch:

1: Classification according to the detection form: (1) convective; (2) diffuse reflective; (3) specular reflective; (4) radiant light detection form; (5) limited reflective; (6) pinch-angle type; (7) coaxial detection type (single lens); (8) fiber-optic type

2: Classification according to the detection method: ( (1) light quantity method; (2) triangulation method; (3) laser measurement method

3: Classification by type of light source: (1) incandescent lamp type (visible light); (2) light-emitting diode (LED) type (visible, near-infrared light); (3) fluorescent (visible light); (4) ultraviolet (invisible light); (5) gas laser (visible light); (6) semiconductor laser type ( Red light, near-infrared light)

4: Classification by the type of modulation of the light source: (1) DC light type; (2) modulation

5: Classification by the type of power supply: (1) DC type; (2) AC type; (3) DC-AC hybrid

6: Classification by the type of output: (1) triode NPN output; (2) triode PNP output; (3) Triode NPN and PNP hybrid output; (4) solid-state isolated non-contact output; (5) relay contact output; (6) SCR output; (7) analog voltage; (8) analog current; (9) data signals

7: Classification by type of structure: (1) built-in amplifier; (2) amplifier separated; (3) fiber optic type; (4) self-control

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