Methods and apparatus to sense the weight of grain in a grain elevator are disclosed. A disclosed example grain elevator includes a grain transport member to transport grain, a driving member to move the grain transport member, a first tension sensor to sense a first tension in the driving member, and a weight determiner to estimate a weight of the grain based on the first tension.

Systems, methods, and apparatus for monitoring yield while harvesting. In one embodiment, a mass flow rate sensor measures the mass flow rate of the harvested grain. Load sensors measure the weight of the harvested grain. The measured mass flow rate is correlated with the weight of the harvested grain. Processing circuitry calculates error in the measured mass flow rate using the measured weight. The calculated error is used to correct inaccuracy in the measured mass flow rate.

A work machine with a sensing assembly that identifies characteristics of an underlying surface and a distribution assembly that distributes material to the underlying surface. Wherein, the sensing assembly identifies the characteristics of the underlying surface and the distribution assembly distributes varying amounts of material based on the characteristics as the work machine moves along the underlying surface.

A delivery device is located at an inlet side of the cleaning shoe in a combine harvester. The delivery device is controlled in order to control a feed rate of grain that is fed to the cleaning shoe. One or more controllable subsystems are controlled based upon the feed rate.

A method for processing harvest yield data includes the steps of receiving load data from a grain cart and receiving harvest yield data from a combine harvester. The load data and harvest yield data are post-processed to generate enhanced harvest yield data. The combine harvester and the grain cart can operate in an on-the-go unloading harvest operation or a stationary unloading harvest operation. Post-processing can include creating a field boundary for a harvest area, determining a start time and start position for the combine harvester within the field boundary, and determining an end time and end position for the combine harvester within the field boundary. The total grain yield weight estimated by a yield monitor can be calibrated to match the grain cart total scale weight.

The disclosed apparatus, systems and methods relate to automatic calibration systems, methods and devices for use with vehicle systems such as grain cart and combine vehicle systems to calibrate the yield monitor via collected calibration load profile data that is processed and used to calibrate and recalibrate the system automatically.

Described are various embodiments of a line-of-sight (LoS) sensor mounting system and method. In one such embodiment, a LoS sensor mounting system is described for operatively mounting a LoS receiver and LoS transmitter on a structure having opposed external walls, comprising a mounting plate and an alignment jig comprising a mounting plate engagement structure and an alignment barrel dimensioned. The alignment barrel is dimensioned to receive an aperture-forming tool operable therethrough along a LoS axis so to form a counterpart external wall LoS aperture within an opposed external wall.

A material independent mass flow sensor is used to generate signals that can be used to calculate mass flow of grain harvested by a combine. A method for determining a mass of material includes the steps of receiving data from a three-measurement transducer and determining an angular center of mass location of an object based on the data from the three-measurement transducer. A coefficient of friction of the object is determined. A velocity of the object is determined. A mass of the object is determined. The mass of the object can be determined based on the angular center of mass location of the object, the coefficient of friction of the object, and the velocity of the object.

A harvester includes: a crop tank that stores a crop harvested by a harvesting device; a weight detection unit that detects a storage weight, which is a value indicating the weight of the crop stored in the crop tank; a maximum weight calculation unit that calculates a maximum weight, which is a value indicating the weight of the crop at the maximum storage amount of the crop tank; a unit harvest weight calculation unit calculates a unit harvest weight that indicates the weight of the crop harvested per unit of harvest-travel distance; and a maximum travel distance calculation unit that calculates a maximum travel distance, which is the maximum distance that can be traveled during traveling harvesting before the amount of the crop stored in the crop tank reaches the maximum storage amount, based on the storage weight, the maximum weight, and the unit harvest weight.

A method and an apparatus for separating a crop flow on at least one conveying and cleaning unit, particularly a top sieve, of a combine harvester, wherein the conveying and cleaning unit is excited to a longitudinal oscillation and a transverse oscillation. The transverse oscillation is controlled depending on at least one state, wherein least one state for controlling the transverse oscillation is the inclination of the combine harvester, wherein at least one further state for controlling the transverse oscillation is the grain purity, particularly the grain purity of a main crop flow. The transverse oscillation is pre-controlled depending on the inclination of the combine harvester and fine-tuned depending on the grain purity.