Measurement accuracy of CAN data acquired from tractors and correlation analysis under operating conditions

抄録

Working (tillage and sowing) depth is critical for crop growth, and a simple yet highly accurate technique for measuring in-field working depth is necessary to achieve uniform growth and increased yield. Therefore, we devised a depth estimation and control system based on tractor controller area network (CAN) data, validated the CAN data accuracy, and built depth estimation models. The relative error between the CAN-derived forward speed and the measured speed was low at −1.21–2.21 %. Additionally, we built a model to estimate the measured value of the power take off speed from the CAN value with R² = 0.99. The depth estimation model showed a strong correlation between hitch height and tillage/sowing depth (R = 0.99 and 0.86, respectively).