Non-contact sensing unit for row crop harvester guidance system

Details Non-contact sensing unit for row crop harvester guidance system Non-contact sensing unit for row crop harvester guidance system

1988-12-22

1990-04-17

Orsino, Joseph A.

Communications: electrical

External condition vehicle-mounted indicator or alarm

180167, 56DIG15, G08G 100

Patent

active

049184415

ABSTRACT:
A non-contact row crop sensor comprises one or more transmitter/receptor pairs mounted on two row separators of a harvesting machine. Each transmitter transmits an energy beam to one of the receptors and the energy beams cross at a point which defines a position of the harvesting machine relative to a row of crop stalks. A circuit produces steering control signals dependent upon the time of intercept of one beam of a pair relative to the time of intercept of the second beam of the pair. A discriminator circuit is provided for discriminating between crop stalks and weeds. Plural transmitter/receptor pairs permit discrimination between intercepts caused by leaves and those caused by stalks.

REFERENCES:
patent: 2818553 (1957-12-01), Jaffe
patent: 3497895 (1968-10-01), Hasenbalg
patent: 4383238 (1983-05-01), Ealdo

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