Optical method and apparatus for discriminating between crop sta

Details Optical method and apparatus for discriminating between crop sta Optical method and apparatus for discriminating between crop sta

1988-12-22

1989-11-28

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250349, 56 102, A01D 7500, G01N 2159

Patent

active

048839647

ABSTRACT:
A row crop harvesting machine is provided with first and second infra-red transmitters and first and second infra-red receptors for sensing the infra-red beams emitted by the transmitters. The transmitters and receptors and mounted on two adjacent crop row separators of a harvesting machine header and are positioned such that the beams intersect in a region which defines the alignment of the harvesting machine relative to a row of crop stalks. The widths of the beams are chosen to be less than the width of the crop stalks being harvested but greater than the width of weed stalks which may be growing in the region of a crop row.

REFERENCES:
patent: 3583514 (1971-06-01), Taylor
patent: 4077488 (1978-03-01), Bennett, Jr. et al.
patent: 4528804 (1985-07-01), Williams

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