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1. (WO2018199826) IMPROVED RECEPTION OF FREQUENCY SPECTRA ON THE RECEIVER SIDE

Pub. No.:    WO/2018/199826    International Application No.:    PCT/SE2018/050290
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Thu Mar 22 00:59:59 CET 2018
IPC: A01D 34/00
B60L 15/20
G05D 1/02
Applicants: HUSQVARNA AB
Inventors: LILJEDAHL, Marcus
Title: IMPROVED RECEPTION OF FREQUENCY SPECTRA ON THE RECEIVER SIDE
Abstract:
A robotic lawnmower system comprising a charging station (210) and a robotic work tool (100), the charging station comprising a signal generator (240) to which a boundary cable (250) is to be connected, the signal generator (240) being configured to transmit a signal (245) through the boundary cable (250), and the robotic working tool (100) comprising a sensor (170) configured to pick up magnetic fields generated by the signal (245) in the boundary cable (250) thereby receiving the signal (245) being transmitted and a controller (110) configured to analyse the picked up signal, wherein the signal generator (240) is further configured to: prefilter the signal through an filter model; and transmit the prefiltered signal to through the boundary cable (250) by means of a current generator.