Seed monitoring system for counting seeds as they are dispensed

Details Seed monitoring system for counting seeds as they are dispensed Seed monitoring system for counting seeds as they are dispensed

1995-05-15

1997-07-22

Le, Que

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2502221, 377 6, G01V 800

Patent

active

056506090

ABSTRACT:
An optical seed counting system for counting seeds that are dispensed through a plurality of seed tubes associated with a multiple row seed planter. Each seed tube includes an optical sensor having an emitter and a receiver. The emitter and the receiver each include lens components for shaping an optical beam. Optical fibers connect the emitter to an optical beam generating device and the receiver to an optical beam detecting device both positioned remotely from the seed tubes. The optical components of the emitter generate a substantially spatially uniform optical beam across a sensing area within the seed tubes. The detecting device generates a pulse signal where the period of the pulses represents the intensity of the optical beam in the sensing area. Seeds that are dispensed in the seed tubes interfere with the optical beam in a manner that affects the light intensity of the beam. Therefore, the change in intensity of the beam indicates the number of seeds.

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