PROBLEM TO BE SOLVED: To accurately detect a flow-down state of granular materials with different properties and suppress a detection failure due to adhesion or deposition of fertilizer and the like without adversely affecting a flow-down route for granular materials, in a granular material flow-down detection device used for a fertilizer distributor or seeder.SOLUTION: In a granular material flow-down detection device 1, a vibration detection sensor 3 constituted of a piezoelectric element is fixed at an external surface of a soft resin hose 2 through which granular materials flow down, with a fitting frame 4.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】施肥機や播種機に用いられる粒状物の流下検出装置において、性状の異なる粒状物の流下状態を精度良く検知できるようにする。粒状物の流下進路に影響を与えること無く、肥料等の付着や堆積による検出不良を抑止する。【解決手段】流下検出装置1は、粒状物が流下する軟質樹脂製のホース2の外表面に、圧電素子からなる振動検出センサ3を、取り付け枠4によって固定した。【選択図】図1
