| 摘要 |
PURPOSE:To attain directing control based on a position by allowing a working vehicle to receive a signal from a transducer provided at a working region and identifying the vehicle position from the intensity of the received signal. CONSTITUTION:Radio waves having different frequencies are transmitted from oscillators 30, 40, 50, 60 and respective radio waves are received by antennas 11, 12 of a rice-planting machine 10. The electric fields of the received radio waves are measured, the signal from the electric field strength is A/D converters 34, 44, 54, 64, the result is fed to a control section 70, where position control is applied by taking the work start position as the origin, taking the progressing direction as the Y axis and setting an X-Y coordinate. |
