TeeJet CenterLine v1.07 - Manual (Page 47)

CenterLine
Software Version 1.07
CenterLine 41
CenterLine Real-Time Operation
Headland Mode Lightbar Graphics
CenterLine’s Headland mode guidance technique employs a lightbar text display graphic that aids
the operator when navigating parallel to a curved swath. The X-Track LED functionality that is
employed in Straight-line and Curve AB modes is also employed when driving in Headland mode.
A projected swath-path graphic is displayed in the text display area of the lightbar (See Figure 41).
This projected path is made up of four horizontal bars. The bottom bar represents the path closest
to the vehicle and the top bar is the path furthest away. The width of the bars decrease as they
move away from the vehicle to add a perspective view to the path ahead of the vehicle. The pro-
jected distance of the first bar from the front of the vehicle is based on the vehicle speed. The light-
bar in Figure 41 informs the user to drive straight, and there are no turns approaching. In Figure 42
the lightbar indicates the vehicle is approaching a turn to the right. The X-Track LEDs indicate that
the vehicle is slightly to the right of the guideline. Lightbar X-Track LEDs are set up in Swath mode.
Therefore the user must correct to the left to get back on line. The X-Track LEDs do not provide
any information relating to the curved path ahead of the vehicle, they only indicate where the vehi-
cle is with respect to the guideline at the current vehicle location. The lightbar displays a “hollow”
path during the first headland pass to indicate that no guidance information is available yet (The
first pass must be completed before a parallel path can be established) (See Figure 43).