Electronic seed rate system for a grain drill

Details Electronic seed rate system for a grain drill Electronic seed rate system for a grain drill

1989-10-31

1991-06-25

Skaggs, H. Grant

Article dispensing

Automatic control

Of discharge assistant operation

221 2, 221131, 221185, 221258, 222 63, 222368, 222614, 222624, 222626, 111177, 111904, G07F 1100

Patent

active

050259512

ABSTRACT:
An agricultural implement such as a grain drill or similar seeding implement includes a plurality of transversely spaced seed meters having fluted feed wheels fixed to and transversely movable with a drive shaft which is controlled by an actuator to vary seeding rate in response to an indication provided by a sensor or sensors associated with one or more of the meters. An electronic controller includes a desired seeding rate input and provides an indication of the actual seeding rate. In one embodiment of the invention, an error signal indicative of the difference between the actual and desired seeding rates is utilized in a closed-loop system to move the shaft to automatically maintain the desired seeding rate. In a wider implement with more than one shaft, a switching circuit is utilized to permit a single control circuit to provide individual section seeding rates and to automatically operate the actuator associated with the given drive shaft in accordance with the error signal.

REFERENCES:
patent: 3355102 (1967-11-01), Gregory, Jr.
patent: 3511411 (1970-05-01), Weiss
patent: 3537091 (1970-10-01), Schenkenberg
patent: 3620419 (1971-11-01), Bailey
patent: 4122974 (1978-10-01), Harbert et al.
patent: 4277833 (1981-07-01), Steffen
patent: 4333096 (1982-06-01), Jenkins et al.
patent: 4369895 (1983-01-01), McCarty et al.
patent: 4408704 (1983-10-01), Steilen
patent: 4697173 (1987-09-01), Stokes
PC2 Planter Computer User's Manual, First Edition, Dec. 1986; Cover through p. 28, and Appendix, p. 51, and Pioneer Technology PC2 brochure show Planter Computers for Monitoring Seeds.

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