Navigation for a robotic working tool
First Claim
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1. A robotic work tool system comprising:
- a robotic work tool, said robotic work tool comprising;
an electric motor powered by a battery and configured to drive a blade for lawn mowing;
a position determining device for determining a current position of the robotic work tool,a controller configured to determine a mowing pattern based on the current position of the robotic work tool and configured to control movement of the robotic work tool to execute the mowing pattern;
a deduced reckoning navigation sensor,wherein the controller is configured to determine that the current position is reliable based on a number of signals received by the position determining device, and, in response to determining that the current position is reliable, determine, via the controller, a calibrated interpretation of signals received from the deduced reckoning navigation sensor based on a position provided by the position determining device.
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Abstract
A robotic work tool system (200) comprising a charging station (210) and a robotic work tool (100), said robotic work tool (100) comprising a position determining device (190) for determining a current position and at least one deduced reckoning navigation sensor (195), the robotic work tool (100) being configured to determine that a reliable current position is possible to determine and in response thereto calibrate at least one of the at least one deduced reckoning navigation sensor (195).
25 Citations
20 Claims
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1. A robotic work tool system comprising:
a robotic work tool, said robotic work tool comprising; an electric motor powered by a battery and configured to drive a blade for lawn mowing; a position determining device for determining a current position of the robotic work tool, a controller configured to determine a mowing pattern based on the current position of the robotic work tool and configured to control movement of the robotic work tool to execute the mowing pattern; a deduced reckoning navigation sensor, wherein the controller is configured to determine that the current position is reliable based on a number of signals received by the position determining device, and, in response to determining that the current position is reliable, determine, via the controller, a calibrated interpretation of signals received from the deduced reckoning navigation sensor based on a position provided by the position determining device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for use in a robotic work tool comprising:
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driving a blade for lawn mowing via an electric motor powered by a battery; determining that a current position of a robotic work tool is reliable based on a number of signals received by a position determining device, wherein the robotic work tool comprises the position determining device and a deduced reckoning navigation sensor; determining, via a controller, a mowing pattern based on the current position of the robotic work tool; controlling movement of the robotic work tool to execute the mowing pattern; and in response to determining that the current position of the robot work tool is reliable, determining, via the controller, a calibrated interpretation of signals received from the deduced reckoning navigation sensor based on a position provided by the position determining device. - View Dependent Claims (17, 18, 19, 20)
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Specification