Development of Planting Height Control System for Rice Transplanters

——Automatic Planting Height Adjusting System——

Abstract

With conventional rice transplanters, float depth was adjusted manually by the operator based on their own experience. However, in order to move to an automatic height control system which can respond to the diversification of environmental conditions arising from regional and agricultural management policies, a new function has been developed by which the degree of float subsidence is detected by a rake sensor, allowing a constant depth to be maintained.

As a result of quantitative performance evaluation conducted during bench testing, the gain obtained using the Taguchi Method was confirmed as improved SN ratio of 9.7 dB and float subsidence of 4.5 dB.