The slot sensor is mainly composed of a light emitting end and a light receiving end, which are located on both sides of the slot, forming a slot-shaped detection area with a certain spacing. The light emitting end usually uses a light emitting diode (LED), which can emit light of a specific wavelength, such as infrared light, and the light receiving end is composed of photoelectric devices such as photodiodes and phototransistors.
The slot sensor is mainly composed of a light emitting end and a light receiving end, which are located on both sides of the slot, forming a slot-shaped detection area with a certain spacing. The light emitting end usually uses a light emitting diode (LED), which can emit light of a specific wavelength, such as infrared light, and the light receiving end is composed of photoelectric devices such as photodiodes and phototransistors.