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Yield monitoring system for grain harvesting combine

  • US 20020133309A1
  • Filed: 05/07/2002
  • Published: 09/19/2002
  • Est. Priority Date: 07/19/2000
  • Status: Active Grant
First Claim
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1. A grain flow monitor for measuring volume flow rate of grain discharged by a power driven conveyor in a grain harvester, comprising a hopper having an open top and an open bottom, said hopper disposed to receive all grain discharged by said conveyor, a rotatable paddlewheel disposed below said hopper and covering said open bottom of said hopper, said paddlewheel having a multiplicity of compartments circumferentially mounted thereon, each compartment of predetermined volume, a height sensor disposed upon said hopper above said paddlewheel, said height sensor generating a control signal responsive to the height of grain in said hopper, said paddlewheel selectively controlled by said control signal to rotate sufficiently rapidly to maintain grain at a predetermined height within said hopper, an angular displacement monitor responsive to the rotation of said paddlewheel generating a first data signal responsive to the rotation of said paddlewheel over unit of time, a computer receiving said first data signal and calculating therefrom a volume flow rate of grain exiting said conveyor

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