PROBLEM TO BE SOLVED: To determine a grain amount properly at each reaping position.SOLUTION: A grain amount measurement device comprises an operation part for calculating a grain amount at each reaping position on the basis of the reaping position information of a combine-harvester detected at a position detection part and grain amount information at a storage part detected by a grain amount detection part. As to the reaping position where the combine harvester has performed a selection in the selection part under an ordinary selection condition, the operation part determines a grain amount at each reaping position by causing the reaping position information and the grain amount information to relate to each other under the ordinary relating condition. As to the reaping position where the combine harvester has performed the selection in the selecting part under an unordinary selection condition different from the ordinary selection condition, the grain amount at each reaping position is determined by causing the reaping position information and the grain amount information to relate to each other under an unordinary relating condition different from the ordinary relating condition.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2017,JPO&INPIT【課題】刈取位置毎の穀粒量を適切に求めること。【解決手段】位置検出部にて検出されるコンバインの刈取位置情報、及び、穀粒量検出部にて検出される貯留部における穀粒量情報に基づいて、刈取位置毎の穀粒量を演算する演算部を備え、演算部は、コンバインが通常選別条件にて選別部での選別を行った刈取位置については、通常関連付け条件により刈取位置情報と穀粒量情報とを関連付けて刈取位置毎の穀粒量を求め、コンバインが通常選別条件とは異なる非通常選別条件にて選別部での選別を行った刈取位置については、通常関連付け条件とは異なる非通常関連付け条件により刈取位置情報と穀粒量情報とを関連付けて刈取位置毎の穀粒量を求める。【選択図】図8
