Abstract: A field map generating system includes: a crop data obtaining unit that obtains crop data over time; a position information obtaining unit that obtains position information, indicating a harvesting position of the crop, over time; polygon constructing units that construct a polygon on the basis of a work width and speed of a harvester, for each piece of crop data obtained by the crop data obtaining unit; data assigning units that assign crop data or crop information based on the crop data to the constructed polygons; a position information assigning unit that assigns position information to the constructed polygons; and field map generating units that generate a field polygon map, which is an aggregate of the polygons, by aggregating the polygons.

Abstract: A harvesting machine includes a harvesting part provided forward of a machine body, and harvests crops in a farm field; and a plurality of crop sensors provided in the harvesting part at intervals in a left-right direction, and detect the presence of crops upon coming into contact with the crops. The harvesting machine may also include a harvesting width detector that detects a harvesting width corresponding to crops harvested through harvesting work that has actually been performed, included in a workable width within which harvesting work can be performed by the harvesting part; and a travel transmission unit that changes the travel speed of the machine body. The harvesting machine may also include a speed controller that shifts the travel transmission unit to a lower speed as the harvesting width increases, and shifts the travel transmission unit to a higher speed as the harvesting width decreases.

Abstract: Need exists for information management technique that allows utilization of collapsed grain culms detection for a future farming plan.

Abstract: Need exists for information management technique that allows utilization of collapsed grain culms detection for a future farming plan.

Abstract: A field map generating system includes: a crop data obtaining unit that obtains crop data over time; a position information obtaining unit that obtains position information, indicating a harvesting position of the crop, over time; polygon constructing units that construct a polygon on the basis of a work width and speed of a harvester, for each piece of crop data obtained by the crop data obtaining unit; data assigning units that assign crop data or crop information based on the crop data to the constructed polygons; a position information assigning unit that assigns position information to the constructed polygons; and field map generating units that generate a field polygon map, which is an aggregate of the polygons, by aggregating the polygons.

Abstract: A harvesting machine including: a harvesting part 4 that is provided forward of a machine body, and harvests crops in a farm field; and a plurality of crop sensors that are provided in the harvesting part at intervals in a left-right direction, and detect the presence of crops upon coming into contact with the crops. The harvesting machine may also include: a harvesting width detector that detects a harvesting width corresponding to crops harvested through harvesting work that has actually been performed, included in a workable width within which harvesting work can be performed by the harvesting part 4; and a travel transmission unit that changes the travel speed of the machine body. The harvesting machine may also include a speed controller that shifts the travel transmission unit to a lower speed as the harvesting width increases, and shifts the travel transmission unit to a higher speed as the harvesting width decreases, based on the result of detection performed by the harvesting width detector.