Electronic demarcating system

Abstract

The present invention relates to a method and an electronic search system for operating an automatic device, preferably an automatic lawnmower. The system comprises at least one first electrical cable ( 1, 4, 5, 6 ) connected to at least one first signal generator ( 3, 7, 8 ) and at least one sensing system arranged on said device. Said sensing system detects at least one magnetic field being transmitted via said cable ( 1, 4, 5, 6 ) and propagating through the air, the sensing system transmitting a processed signal to at least one driving means which contributes to the movements of said device in relation to a surface. Said search system comprises means by which the first signal generator ( 3, 7, 8 ) of the present invention transmits a current through said first cable ( 3, 7, 8 ), said current during a part of time being is in a state of rest where it is substantially constant, said state periodically being interrupted by at least one first characteristic current pulse.

Description

technical field

[0001] The invention relates to a method and an electric search system for operating an automatic device, in particular an automatic lawnmower, said system comprising at least one first cable connected to at least one first signal generator and at least one A sensing system on said device, said sensing system detecting at least one magnetic field transmitted via said cable and propagating through the air, said sensing system transmitting a processed signal to at least one drive means for said device Motion relative to a surface. Background technique

[0002] The idea of ​​improving tools that work autonomously, such as robots for vacuuming or mowing grass, is old. Regardless of the fact that this is an old idea, until recently the aforementioned tools were not available to consumers. An example is the autonomous vacuum cleaner Trilobite TM and Automower TM . They both treat (shear or clean) a surface by moving it within and relative to an area that needs...

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