Development of Impact Type Yield Sensor for Head Feeding Combine

Abstract

In order to measure the spatial variability of grain yield, an impact type yield sensor has been developed for head feeding combine. The sensor consists of two cantilevers. One of them measures grain impact and the other measures background noise. The coefficient of determination between measured value and grain yield is 0.91 at indoor test. The sensor was installed on the head feeding combine with RTK-DGPS. The coefficient of determination is 0.58 at a paddy field test.