combine yield monitors

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Combine Yield Monitors Combine Yield Monitors

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Combine Yield Monitors. Current Yield Monitors. Mass-flow sensor Volumetric-flow sensor Conveyor belt load sensor Trailer load sensor Torque transducer. Basics of Yield Monitoring. Possible Crops to Monitor Wheat and other grains Cotton Potato and Sugar Beets Beans Rice - PowerPoint PPT Presentation

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Combine Yield MonitorsCombine Yield MonitorsCombine Yield MonitorsCombine Yield Monitors

Current Yield MonitorsCurrent Yield MonitorsCurrent Yield MonitorsCurrent Yield Monitors

Mass-flow sensorMass-flow sensor Volumetric-flow sensorVolumetric-flow sensor Conveyor belt load sensorConveyor belt load sensor Trailer load sensorTrailer load sensor Torque transducerTorque transducer

Basics of Yield MonitoringBasics of Yield MonitoringBasics of Yield MonitoringBasics of Yield Monitoring

Possible Crops to MonitorPossible Crops to Monitor– Wheat and other grainsWheat and other grains– CottonCotton– Potato and Sugar BeetsPotato and Sugar Beets– BeansBeans– RiceRice– Specialty Crops Specialty Crops

Grapes, Tomatoes, Carrots, etc.Grapes, Tomatoes, Carrots, etc.

Impulse Yield SensorsImpulse Yield SensorsImpulse Yield SensorsImpulse Yield Sensors

John Deere

Case

Ag Leader

Micro Trak

Impulse Flow Meter Force VectorsImpulse Flow Meter Force VectorsImpulse Flow Meter Force VectorsImpulse Flow Meter Force Vectors

Dynamincs of an Impulse Flow MeterDynamincs of an Impulse Flow MeterDynamincs of an Impulse Flow MeterDynamincs of an Impulse Flow Meter

vmG

tdvmd

GF y

tdvdm

tdmdv

Assuming velocity is constant at t=t1

tdmdv

F y

Non-Impulse Yield SensorsNon-Impulse Yield SensorsNon-Impulse Yield SensorsNon-Impulse Yield Sensors

Nuclear -

Massey Ferguson - Europe

High Frequency Radio Waves

New Holland - Not marketed

Capacitance Moisture SensorsCapacitance Moisture SensorsCapacitance Moisture SensorsCapacitance Moisture Sensors

John Deere

Micro Track

Ag Leader

Case

Capacitance Moisture SensorsCapacitance Moisture SensorsCapacitance Moisture SensorsCapacitance Moisture Sensors

Yield Mapping TrailerYield Mapping Trailer(Sugar Beet Harvest)(Sugar Beet Harvest)Yield Mapping TrailerYield Mapping Trailer(Sugar Beet Harvest)(Sugar Beet Harvest)

Yield Mapping TrailerYield Mapping TrailerYield Mapping TrailerYield Mapping Trailer

Measures change in weight in Measures change in weight in the trailer while allowing for the trailer while allowing for comparison at different times.comparison at different times.

Can be used for any crop that Can be used for any crop that is loaded into a trailer is loaded into a trailer continuously while harvested.continuously while harvested.

Sources of Yield Map ErrorSources of Yield Map ErrorSources of Yield Map ErrorSources of Yield Map Error

Unknown swath widthUnknown swath width Time lag of grain through combineTime lag of grain through combine GPS errorGPS error Multiple paths through combineMultiple paths through combine Surging of grain through combineSurging of grain through combine Grain lossesGrain losses Sensor CalibrationSensor Calibration

Sources of Impulse YieldSources of Impulse Yield Sensor Error Sensor Error

Sources of Impulse YieldSources of Impulse Yield Sensor Error Sensor Error

Grain MoistureGrain Moisture Grain Test WeightGrain Test Weight Grain TemperatureGrain Temperature Grain CultivarGrain Cultivar Grain SpeciesGrain Species ContaminationContamination

– DirtDirt– Plant oils, sap, etc.Plant oils, sap, etc.

Effect of Lag Time onEffect of Lag Time on Combine Yield Measurements Combine Yield Measurements

Effect of Lag Time onEffect of Lag Time on Combine Yield Measurements Combine Yield Measurements

P

Pt

t

t0

Crop Yield Along Swath

Actual Grain Yield

Yield Monitor Measured Grain Yield

Yie

ldY

ield

Smoothing Effect of the Straw WalkersSmoothing Effect of the Straw WalkersSmoothing Effect of the Straw WalkersSmoothing Effect of the Straw Walkers

Combine Yield Monitor and Satellite Combine Yield Monitor and Satellite Estimated Wheat Yield MapsEstimated Wheat Yield MapsCombine Yield Monitor and Satellite Combine Yield Monitor and Satellite Estimated Wheat Yield MapsEstimated Wheat Yield Maps

Yield Monitor 26.4 bu/acYield Monitor 26.4 bu/ac Satellite Estimate 28.7 bu/acSatellite Estimate 28.7 bu/ac

Two Combines in the Field with only Two Combines in the Field with only One Equipped with GPSOne Equipped with GPSTwo Combines in the Field with only Two Combines in the Field with only One Equipped with GPSOne Equipped with GPS

Oklahoma Panhandle, 1997

Corn Yield Surface with KriegingCorn Yield Surface with KriegingCorn Yield Surface with KriegingCorn Yield Surface with Krieging

Oklahoma Panhandle, 1997

Wheat Yield Under a Center Pivot Wheat Yield Under a Center Pivot Irrigation System Irrigation System Wheat Yield Under a Center Pivot Wheat Yield Under a Center Pivot Irrigation System Irrigation System

Oklahoma Panhandle, 1998

Wheat Yield Under a Center Pivot Wheat Yield Under a Center Pivot Irrigation SystemIrrigation SystemWheat Yield Under a Center Pivot Wheat Yield Under a Center Pivot Irrigation SystemIrrigation System

Oklahoma Panhandle, 1997

Wheat Yield Under a Center Pivot Wheat Yield Under a Center Pivot Irrigation SystemIrrigation SystemWheat Yield Under a Center Pivot Wheat Yield Under a Center Pivot Irrigation SystemIrrigation System

Oklahoma Panhandle, 1997

Wheat Yield Under a Center Pivot Wheat Yield Under a Center Pivot Irrigation SystemIrrigation SystemWheat Yield Under a Center Pivot Wheat Yield Under a Center Pivot Irrigation SystemIrrigation System

Oklahoma Panhandle, 1998

Data Misaligned Because of the Lag in Data Misaligned Because of the Lag in the Combinethe CombineData Misaligned Because of the Lag in Data Misaligned Because of the Lag in the Combinethe Combine

Error Caused by the Lag in the CombineError Caused by the Lag in the CombineError Caused by the Lag in the CombineError Caused by the Lag in the Combine

Missing DataMissing DataMissing DataMissing Data

Peanut Yield Monitor Peanut Yield Monitor University of GeorgiaUniversity of GeorgiaPeanut Yield Monitor Peanut Yield Monitor University of GeorgiaUniversity of Georgia

AgLeader Cotton Yield MonitorAgLeader Cotton Yield MonitorAgLeader Cotton Yield MonitorAgLeader Cotton Yield Monitor

Developed by John Wilkerson – University of Tennessee

Yield SurfaceWith Lime Streaking

NDVI surfaceWith lime streaking

5 Class Krieg

Courtesy of Tim Sharp Jackson State C.C.

Fertilizer Streaking5 Class KriegSpinner Applicator

Yield Surface NDVI Surface

Courtesy of Tim Sharp Jackson State C.C.

Major ChallengeMajor ChallengeMajor ChallengeMajor Challenge

Correlate Correlate NDVI NDVI surface surface data with data with yield yield surface surface datadata

NDVI Vs Yield Curve 2001

R2 = 0.8731

0

0.1

0.2

0.3

0.4

0.5

0.6

0 200 400 600 800 1000 1200 1400

Courtesy of Tim Sharp Jackson State C.C.

Cotman Sample PointsCotman Sample PointsCotman Sample PointsCotman Sample Points

Medium

Low

High

Courtesy of Tim Sharp Jackson State C.C.