161 | FUNDAMENTALS IN AGRICULTURE AND FOOD
To achieve this, the front axle of machines with self-steering can be easily
rotated about an axis A-B that is diagonal to the body, resulting in a change in
the direction of the vehicle's motion (Morimoto and Hashimoto, 2000). To
achieve a higher accuracy in the steering angle, a decrease of 35 millimeters in
the rear tread is implemented compared to the front tread.
Another automatic spray technique is electromagnetic induction.
Induction wires are laid under headland and/or ridge cuts, and a vehicle with an
induction sensor can automatically move along the wires, ensuring more
precise application of chemicals. Various techniques have been devised for
vehicles journeying towards the next ridge to cut thin headlands in greenhouses,
such as four-wheel steering, a pivot shaft protruding for rotation, an added rail
system transporting the vehicle to the subsequent cut, and a manual approach.
In 1993-1994, automatic sprayers utilizing induction tubes and wires
were created and used in orchards, respectively (Arima et al., 1994a, b). The
use of remote-controlled helicopters for spraying has also been reported in the
fields. These advances in automated spraying technologies are revolutionizing
the agricultural industry and making precision farming more efficient and
effective.
Dostları ilə paylaş: