This is done via the GPS receiver and by knowing the swath width of the boom spray rig. Then as the spray boom or planter bar travels across the field, the auto section controller checks to see whether the area has been previously covered from the recorded information.
If the area has been previously covered that section is turned OFF so as not to cover the same part of the field again. Once that section leaves the treated part of the field, the AS7500 will then switch the section back, ON.
The Leica Geosystems line of auto-section controllers are designed to work with most GPS receivers and then connect to a wide range of spray rate controllers and planting systems. With auto-section technology, efficiency is gained by removing the guesswork associated with switching sections ON or OFF. This directly contributes to more precise application of chemicals and placement of crops resulting in healthier crops and a more profitable business.
Leica Geosystems' suite of auto section controllers increase efficiency by relieving the operator from the arduous task of manual switching, which requires split second timing on multiple sections, allowing precise placement of chemicals and seed. In addition, to this split-second control, the Leca Geosystems suite of section control products use a unique vehicle modeling feature which allows even more accurate placements of these inputs.
Leica Geosystems offers auto section control with the Leica mojo3D via at AS400. Plus a completely autonomous system in the AS7500, which can be interfaced with many existing spray rate controllers and GPS receivers.