The grain quantity detection device in the threshing device

摘要

PURPOSE:To obtain an amount of leakd grain as a fourth loss of a thrashing device from a detection pattern of a piezoelectric sensor. CONSTITUTION:A pad net 32 is provided at a lower portion of a handling drum 19 which thrashes a harvested ear and a winnowing mechanism 25 is provided at the lower portion. A discharged ear can be released from a ear exhaust exit 24 at a rear portion of the winnowing mechanism 25 to the outside of a device. A piezoelectric sensor 57 for detecting an object to be detected which is leaked and dropped from the pad net 32 is provided between the pad net 32 at the lower portion of a part closer to a rear portion of the handling drum 19 and the winnowing mechanism 25. A neutral network is constructed with a detection pattern of only the grain according to the piezoelectric sensor 57 and a detection pattern of only the exhaust ear as learning data and a central control device for detecting an amount of leaked and dropped grain according to a detection waveform of the object to be detected which is leaked and dropped from the pad net is provided.