| 摘要 |
PROBLEM TO BE SOLVED: To accurately detect granules, such as seeds, flowing down at a high speed. SOLUTION: The detection electrodes of a seed sensor 41 are disposed at opposite positions in the seed-flowing route of the seeder, and the detection electrodes detect granules on the basis of a change in the capacitance of the passing granules. Even when a detected capacitance value is changed with articles placed on their peripheries on the passage of the granules through the detection electrodes of the seed sensor 41, the granules can accurately be detected, because the passage of the granules is detected by the change of the capacitance based on a standard detection value changed with the peripheral articles. |
