Abstract:
A location estimation system for use with an autonomous lawn mowing robot, comprises a plurality of synthetic surfaces positioned with respect to a mowable space in an environment, a radiation source coupled to the lawn mowing robot, a detector coupled to the lawn mowing robot and configured to detect radiation reflected by objects in the environment, and a controller configured to controllably direct radiation from the radiation source to scan the environment, and to vary at least one of an output power of the directed radiation and a scan rate of the directed radiation, as a function of detected radiation reflected from one or more of the synthetic surfaces.
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) and a controller (210), wherein said controller (210) is configured to determine a current position for the robotic work tool (100) based on the position determining device (190), determine a first distance from the current position to said charging station (210), cause said robotic work tool (100) to travel a predetermined distance or for a predetermined time, determine a new current position for the robotic work tool (100) based on the position determining device (190), determine a second distance from the new current position to said charging station (210), determine if the second distance is larger than the first distance; and if so, cause the robotic work tool (100) to turn towards the charging station (210).
Abstract:
A robotic work tool system (200) comprising a robotic work tool (100), said robotic work tool (100) comprising a housing (140) comprising a chassis (140B) adapted to carry at least one component (110, 120, 180, 170, 165, 160, 150), and a body (140A), wherein said body (140A) is adapted to be fitted with an exchangeable cover (310), which exchangeable cover (310) is arranged to be attached to said body (140A) through releasable attachment means (410, 415, 420,425, 430, 435).
Abstract:
A robotic work tool system (200) comprising a robotic work tool (100) comprising a collision detection sensor (190), said collision detection sensor (190) comprising a first sensor element (191) and a plurality of second sensor elements (192), wherein said first sensor element (191) is movably arranged with respect to said plurality of second sensor elements (192), wherein said robotic work tool (100) is configured to detect that said first sensor element (191) is proximate a peripheral second sensor element (192) and in response thereto determine that a collision has been detected, and detect that said first sensor element (191) is not proximate any peripheral second sensor element (192) and in response thereto determine that a lift has been detected.
Abstract:
A robotic work tool system (200), comprising a charging station (210), a boundary wire (250), a signal generator (240) for generating and transmitting a signal through said boundary wire (250) for demarcating a work area (205) and for generating a magnetic field (265) for guiding a robotic work tool (100) to said charging station (210), said robotic work tool (100) being configured to detect a magnetic field strength of the magnetic field (265) in the work area (205), direct itself towards an increasing magnetic field strength, determine that the robotic work tool (100) is unable to reach the charging station (210), inform the robotic work tool system (200) accordingly, whereby the robotic work tool system (200) is configured to adapt a current level of the signal generating the magnetic field (365).
Abstract:
Die Erfindung betrifft ein Verfahren zum Betrieb eines selbstfahrenden Rasenmähers, der auf einer Fläche (20) verfahren wird. Die Fläche (20) ist von einem Randbegrenzungsdraht (21) umgeben, auf dem elektrische Signale (16, 116) gesendet werden. Das gesendete Signal (16) wird von mindestens einer Empfangsspule (17, 18) im Rasenmäher (2) empfangen und induziert ein Empfangssignal (El), das in einer Auswerteeinheit (19) ausgewertet wird. Die Auswerteeinheit (19) gibt an eine Steuereinheit (13) ein Ausgangssignal ab, in dessen Abhängigkeit die Steuereinheit (13) die Fahrtrichtung des Rasenmähers (2) steuert. Um auch im Bereich von elektromagnetischen Störfeldern einen sicheren Betrieb des Rasenmähers zu gewährleisten, ist vorgesehen, das elektrische Signal (16, 116) mit einem vorgegebenen Muster (M) zu senden. Die Auswerteeinheit (19) des Rasenmähers (2) verarbeitet das Empfangssignal (El) als Muster, wobei das Muster (Μ') des Empfangssignals (El) mit einem vorgegebenen Referenzmuster (RM) verglichen wird. Aus dem Vergleichsergebnis wird eine Information über den Aufenthaltsort des Rasenmähers (2) innerhalb oder außerhalb des Randbegrenzungsdrahtes (21) gewonnen. Abhängig von dieser Information wird die Steuereinheit (13) die Fahrtrichtung des Arbeitsgerätes bestimmen.
Abstract:
The invention relates to methods for controlling automated devices. The method comprises locating at least one automated device on an area being controlled and placing an observation device, before the automated device starts operation, over the area being controlled on a flying device or tower, said observation device being capable of receiving and transmitting a control signal to the automated device and determining the coordinates of the flying device, whereupon said observation device controls at least said one automated device. The invention simplifies control of the automated device and improves the accuracy with which its coordinates are determined.
Abstract:
A robotic vehicle may include a power module and a working module. The power module may include control circuitry configured to execute stored instructions to direct operation of the robotic vehicle on a defined area, and a drive motor for propelling the robotic vehicle responsive to control by the control circuitry. The working module may be configured to perform a function with respect to the defined area responsive to being propelled by the power module. The working module may be one of a plurality of interchangeable working modules that are attachable to the power module. At least one of the interchangeable working modules may have a different function than the working module.
Abstract:
A robotic vehicle may include control circuitry configured to execute stored instructions to direct operation of the robotic vehicle on a defined area, and an electrical resistance sensor in communication with the control circuitry. The electrical resistance sensor may be configured to detect motion indicative of a lift event and a collision event using a single sensor.