Abstract: A method for use in a robotic work tool system (200) comprising a server (240) and a robotic work tool (100) arranged to operate in an operational area (205) based on a satellite navigation sensor (175), wherein the method comprises: receiving (410) one or more safety boundaries (220, 220-1, 220-2) and storing these in a safety map (120A-1) of the operational area (205), receiving (420) one or more zone boundaries (220-3, 220-4, 220-5, 220-6) and storing these in a zone map (120A-2) of the operational area (205), and operating (440) according to the one or more zone boundaries (220-3, 220-4, 220-5, 220-6) and the one or more safety boundaries (220, 220-1, 220-2), wherein the one or more zone boundaries (220-3, 220-4, 220-5, 220-6) are related to an operating schedule and the one or more safety boundaries (220, 220-1, 220-2) are related to safety concerns for the robotic work tool (100) and wherein the method is characterized in that the one or more zone boundaries (220-3, 220-4, 220-5, 220-6) are received by

Abstract: A robotic lawnmower system comprising a boundary wire and a robotic lawnmower arranged to operate in an operational area bounded by a virtual boundary, the robotic lawnmower comprising one or more magnetic sensors, one or more satellite navigation sensors and a controller, wherein the controller is configured to: cause the robotic lawnmower to operate in the operational area according to the virtual boundary based on the one or more satellite navigation sensors, determine that the robotic lawnmower is approaching the boundary wire, determine a boundary location, determine a distance (d) between the virtual boundary and the boundary wire at the boundary location, compare the determined distance (d) to a mode determination distance (D), and if the determined distance (d) is greater than the mode determination distance D, the robotic lawnmower is configured to cross the boundary wire and continue operating within the virtual boundary, or if the determined distance (d) is less than the mode determination distance

Abstract: A method for use in a robotic work tool system (200) comprising a server (240) and a robotic work tool (100) arranged to operate in an operational area (205) based on a satellite navigation sensor (175), wherein the method comprises: receiving (410) one or more safety boundaries (220, 220-1, 220-2) and storing these in a safety map (120A-1) of the operational area (205), receiving (420) one or more zone boundaries (220-3, 220-4, 220-5, 220-6) and storing these in a zone map (120A-2) of the operational area (205), and operating (440) according to the one or more zone boundaries (220-3, 220-4, 220-5, 220-6) and the one or more safety boundaries (220, 220-1, 220-2), wherein the one or more zone boundaries (220-3, 220-4, 220-5, 220-6) are related to an operating schedule and the one or more safety boundaries (220, 220-1, 220-2) are related to safety concerns for the robotic work tool (100) and wherein the method is characterized in that the one or more zone boundaries (220-3, 220-4, 220-5, 220-6) are received by

Abstract: The present invention relates to a sensor for detection of oxides of nitrogen forming part of a gas, including a substrate consisting of a solid electrolyte on which a conductive pattern is arranged which includes at least two parts forming an anode and a cathode, a current being produced in the sensor in the presence of oxides of nitrogen and the anode and the cathode being connected to an external voltage source which is adapted to drive the current and to means for measuring the current, which constitutes a measure of the concentration of oxides of nitrogen in the gas. The sensor is adapted to generate the current by means of a transport of oxygen ions in the sensor which essentially originates from oxides of nitrogen being part of the gas, independently from the content of oxygen in the gas.