Improved Lift Detection for a Robotic Work Tool
AssigneeHusqvarna AB
InventorsKent Askenmalm, Jonas Rangsjö
Life of this patent
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Abstract
A robotic work tool system (200) comprising a robotic worktool (100) comprising a distance sensor (190, 190′, 190″), the robotic work tool (100) being configured to determine a sensed distance (SD) to a surface travelled (G); determine whether the sensed distance is greater than a threshold distance; and if so detect a lift event.
Claims18
A robotic work tool system comprising a robotic work tool comprising at least one distance sensor, the robotic work tool being configured to:
- determine a sensed distance to a surface travelled;
- determine whether the sensed distance is greater than a threshold distance;
- and if so detect a lift event.
A method for use in a robotic work tool system comprising a robotic work tool comprising a distance sensor, the method comprising:
- determining a sensed distance to a surface travelled;
- determining whether the sensed distance is greater than a threshold distance;
- and if so detecting a lift event.
A robotic lawnmower system comprising a robotic lawnmower comprising at least one radar device, the robotic lawnmower being configured to determine the height of grass based on the time of reception of a received radar echo utilizing the at least one radar device.
Dependencies are inferred from the claim text.