Classifications

• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
  • G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
  • G05D1/40—Control within particular dimensions
  • G05D1/43—Control of position or course in two dimensions [2D]
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
  • G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
  • G05D1/02—Control of position or course in two dimensions
  • G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
  • G05D1/0259—Control of position or course in two dimensions specially adapted to land vehicles using magnetic or electromagnetic means
  • G05D1/0265—Control of position or course in two dimensions specially adapted to land vehicles using magnetic or electromagnetic means using buried wires
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01D—HARVESTING; MOWING
  • A01D34/00—Mowers; Mowing apparatus of harvesters
  • A01D34/006—Control or measuring arrangements
  • A01D34/008—Control or measuring arrangements for automated or remotely controlled operation
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
  • G05D2111/00—Details of signals used for control of position, course, altitude or attitude of land, water, air or space vehicles
  • G05D2111/30—Radio signals
  • G05D2111/36—Radio signals generated or reflected by cables or wires carrying current, e.g. boundary wires or leaky feeder cables

Definitions

• the present disclosure relates to a self-propelled robotic tool comprising a work implement, a driving arrangement for moving the robotic work tool, a control device for controlling the driving arrangement, and an acquisition device, configured to record a signal transmitted in bursts by a boundary wire loop, wherein the control device is configured to determine whether the robotic work tool is located within an area defined by the boundary wire loop based on the recorded signal.
• Fig 3 illustrates an example of burst with certain signatures or patterns.
• the method may begin with clearing 45 the buffer 41 or memory.
• the system waits 47 an estimated period time P est , and thereafter samples 49 data input from the coil 23.
• the sampled data is added 51 to the buffer 41.
• adding is here meant that the received signal is added to corresponding data from previous pulses such that the value at a time t, v t is added to the corresponding value of previous pulses v t -p+v t -2 P +... etc.
• the sum in the buffer thus corresponds to an average of pulses received since the last clear event, even if not divided by the number of pulses.
• other and different FIR- and MR filter configurations are possible.

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Aviation & Aerospace Engineering (AREA)
• Radar, Positioning & Navigation (AREA)
• Remote Sensing (AREA)
• General Physics & Mathematics (AREA)
• Automation & Control Theory (AREA)
• Life Sciences & Earth Sciences (AREA)
• Environmental Sciences (AREA)
• Electromagnetism (AREA)
• Manipulator (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=69167799

Family Applications (1)

Country Status (3)

Families Citing this family (8)

Citations (1)

Family Cites Families (2)

• 2019
  • 2019-01-15 SE SE1950041A patent/SE542918C2/en unknown
• 2020
  • 2020-01-09 WO PCT/EP2020/050356 patent/WO2020148138A1/en not_active Ceased
  • 2020-01-09 EP EP20700770.9A patent/EP3912005A1/de not_active Withdrawn

Patent Citations (1)

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