A grain cleaning system for a combine harvester having a transmitter adapted to transmit a base signal at a known frequency and one or more spaced receivers for detecting signals of a different frequency as reflected from airborne grain and other materials within the duct of the grain cleaning system An Electronic Control Unit modulates the base signal and the reflected signals to obtain Doppler signals or frequencies from which an average particle velocity is determined. The particle velocity is used as an input parameter for the generation of control signals for the adjustment of various working units of the combine harvester including, by way of example, the fan and sieves.

A dynamically operated concave threshing bar system, method, and apparatus is disclosed wherein one or more threshing bars within a concave can dynamically move to various positions in real-time based on one or more conditions such as the type crop being harvested and on a determination by a combine harvester's computerized system, artificial intelligence (AI) system, or upon the operators input, among others. The concave can include a concave frame having a pair of arcuate side members, a threshing bar, and an actuator coupled to the threshing bar, wherein the actuator can be configured to move the threshing bar along the arcuate side members of the concave frame.

A system and method of controlling an agricultural machine includes successively recording signals from a first sensor sensing an agronomic parameter of a field during an operation of the machine in the field. The system and method of controlling an agricultural machine also includes successively recording signals from a second sensor sensing an operation parameter of the machine during the operation of the machine in the field. The signals of the first sensor and the second sensor are spatially overlaid. A respective zone in the field is determined from the overlaid signals. An actuator of the machine is controlled dependent on the determined zone in which the machine operates.

A cleaning system for an agricultural combine includes a cleaning shoe including a chaffer having an upstream extremity and a downstream extremity, a cleaning fan for establishing a flow of air upwardly through the chaffer, and a transverse chaffer dam mounted proximate to the downstream extremity transversely obstructing a crop layer flow path extending over the chaffer from the upstream extremity to the downstream extremity while permitting air and threshed crop material to flow thereover and thereunder through a transverse opening between the chaffer dam and the downstream extremity.

A computer-implemented method includes obtaining harvest data indicative of a prior harvesting operation on a field, identifying a region of the field having already-harvested crop plants based on the harvest data, detecting a characteristic of crop plants in a field in a path of an agricultural harvesting machine in a direction of travel, generating, based on the detected characteristic, a height metric representing a height of the crop plants on a particular area of the field, and generating a control signal to control the agricultural harvesting machine based on the height metric and the identified region.

A combine harvester having a plurality of working units for performing a harvested material processing operation is disclosed. The plurality of working units comprise at least one separator and one cleaning device. A grain loss sensor may be present in one or both of the separator or the cleaning device. The combine harvester comprises a driver assistance system, which comprises a grain loss sensor setting assistant configured to determine and to set the grain loss sensor sensitivity of the grain loss sensor(s) of the separator and/or the cleaning device. The grain loss sensor setting assistant may determine in a dialog with an operator the grain loss sensor sensitivity to be set for the grain loss sensor(s).

An automatic uniform distribution apparatus for the threshed material from the combine harvester comprises a tangential flow threshing and separating device, a shaking plate threshed material detecting device, a shaking plate, a shaking plate flow guiding mechanism, an axial flow threshing and separating device, a chaff screw conveyor, a return plate, a return plate flow guiding mechanism, a return plate threshed material detecting device, a vibrating sieve, and an on-line detection controller. Force sensors are provided at lateral positions below discharge ports of the shaking plate and the return plate to measure flow rates of the threshed material in lateral regions of the shaking plate and the return plate.

A graphical user interface (60) for a combine harvester (10) includes, in a first portion (62) of the user interface, a graphical representation (66, 70) of an amount of material passing through a threshing system (22) at multiple positions along a longitudinal direction of the combine harvester, and a graphical representation (68, 72) of an amount of material passing through a cleaning system (42) at multiple positions along the longitudinal direction of the combine harvester. The user interface further includes, in a second portion (64) of the user interface, a graphical representation (74, 78) of an amount of material passing through the threshing system (22) at a plurality of locations along a lateral axis of the combine harvester, and a graphical representation (76, 80) of an amount of material passing through the cleaning system (42) at a plurality of locations along the lateral axis of the combine harvester.

A grain harvesting vehicle is configured to harvest a grain. A chaffer is configured to separate grain from material other than grain (MOG). A grate is positioned rearward of the chaffer. The grate includes a grate panel having an upper surface and a lower surface and an aperture in the grate panel extending between the upper surface and the lower surface. The aperture has a first end nearer the chaffer and a second end opposite the first end. The grate further includes a ramp portion extending above the grate panel from adjacent the first end of the aperture toward the second end of the aperture. A grain sensor has a sensing location positioned at a height below the grate.

A system and method for reversing a movement direction of a laterally extending conveyor of a draper header of an agricultural machine. The system includes a fluid line for delivering fluid to a motor that drives the laterally extending conveyor. A directional flow control valve is connected to the fluid line and is movable between a first state in which the directional flow control valve is configured to deliver the fluid to the motor in a first fluid direction to cause the motor to move the laterally extending conveyor in a first movement direction, and a second state in which the directional flow control valve is configured to deliver the fluid to the motor in a second fluid direction that is different from the first fluid direction to cause the motor to move the laterally extending conveyor in a second movement direction that is opposite to the first movement direction.