Seed flow monitor multiplexing system

Details Seed flow monitor multiplexing system Seed flow monitor multiplexing system

G - Physics

08

B

340/144.5

G08B 21/00 (2006.01) G08B 25/04 (2006.01)

Patent

CA 1170744

SEED FLOW MONITOR MULTIPLEXING SYSTEM ABSTRACT OF THE DISCLOSURE A seed flow monitor for use with a plurality of seed flow sensors which are located in individual tubes of a field seeder. In the event of detection of reduction of seed flow in any seed tube below a predetermined threshold, a pulse signal is sent to a central display via circuits, associated with each group of seed flow sensors, connected in series. Each of the circuits modifies the pulse signal in a predetermined similar manner, resulting in a pulse signal received at the central display which is unique to the group of seed tubes originating the pulse signal. Preferably the pulse signal is constantly transmitted to the circuits by the central display, and is merely coupled into the series of circuits upon detection of the seed flow below the threshold. The cabling complexity from the sensors to the control display is thus substantially reduced and reliability is enhanced.

363074

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