SE1751594A1 - System method and a detecting device related to robotic working tools for detecting a break in a robotic work tool system boundary wire - Google Patents

System method and a detecting device related to robotic working tools for detecting a break in a robotic work tool system boundary wire Download PDF

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Publication number
SE1751594A1
SE1751594A1 SE1751594A SE1751594A SE1751594A1 SE 1751594 A1 SE1751594 A1 SE 1751594A1 SE 1751594 A SE1751594 A SE 1751594A SE 1751594 A SE1751594 A SE 1751594A SE 1751594 A1 SE1751594 A1 SE 1751594A1
Authority
SE
Sweden
Prior art keywords
robotic
break
detecting
boundary wire
work tool
Prior art date
Application number
SE1751594A
Other versions
SE542098C2 (en
Inventor
Marcus Liljedahl
Original Assignee
Husqvarna Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Husqvarna Ab filed Critical Husqvarna Ab
Priority to SE1751594A priority Critical patent/SE542098C2/en
Publication of SE1751594A1 publication Critical patent/SE1751594A1/en
Publication of SE542098C2 publication Critical patent/SE542098C2/en

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Manipulator (AREA)

Abstract

The present disclosure relates to a robotic work tool system where a base station 5 feeds a signal to a boundary wire 7, and a robotic tool 3 detects, by means of the signal, the boundary wire in order to stay within a work area 9 defined by the latter. The emitted signal has a high relative bandwidth. If there is a break in the wire, the location of this break can be detected by measuring the emitted signal’s absolute phase.
SE1751594A 2017-12-21 2017-12-21 System method and a detecting device related to robotic working tools for detecting a break in a robotic work tool system boundary wire SE542098C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE1751594A SE542098C2 (en) 2017-12-21 2017-12-21 System method and a detecting device related to robotic working tools for detecting a break in a robotic work tool system boundary wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1751594A SE542098C2 (en) 2017-12-21 2017-12-21 System method and a detecting device related to robotic working tools for detecting a break in a robotic work tool system boundary wire

Publications (2)

Publication Number Publication Date
SE1751594A1 true SE1751594A1 (en) 2019-06-22
SE542098C2 SE542098C2 (en) 2020-02-25

Family

ID=67296879

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1751594A SE542098C2 (en) 2017-12-21 2017-12-21 System method and a detecting device related to robotic working tools for detecting a break in a robotic work tool system boundary wire

Country Status (1)

Country Link
SE (1) SE542098C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE2151567A1 (en) * 2021-12-21 2023-04-25 Husqvarna Ab Improved manner of detecting wire break for a robotic working tool system

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299351A (en) * 1964-03-27 1967-01-17 Northern Electric Co Apparatus for detecting faults in buried cables including means for applying a composite signal having fundamental and even harmonic frequency components
US3991363A (en) * 1975-08-11 1976-11-09 Bell Telephone Laboratories, Incorporated Method and apparatus for detecting faults in buried insulated conductors
US4438389A (en) * 1979-08-18 1984-03-20 Geodate Limited Method for utilizing three-dimensional radiated magnetic field gradients for detecting serving faults in buried cables
US4518911A (en) * 1983-01-19 1985-05-21 Perkins Research & Mfg. Co., Inc. Cable test apparatus
US4896117A (en) * 1987-10-24 1990-01-23 Radiodetection Limited Method of and apparatus for tracing faults in electrical conductors
US5210497A (en) * 1989-06-29 1993-05-11 Radiodetection, Ltd. Cable fault tracing systems
US6819115B1 (en) * 1999-08-11 2004-11-16 Aegis Pty., Ltd. Fault location device and method
US6867596B1 (en) * 2003-01-23 2005-03-15 Mclaughlin Manufacturing Company, Inc. Fault detection system
US20130110322A1 (en) * 2010-07-07 2013-05-02 Husqvarna Ab Communication and Safety Device for Boundary Aided Systems
US20160169953A1 (en) * 2013-06-28 2016-06-16 Pr Electronics A/S System and method for detection of wire breakage

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299351A (en) * 1964-03-27 1967-01-17 Northern Electric Co Apparatus for detecting faults in buried cables including means for applying a composite signal having fundamental and even harmonic frequency components
US3991363A (en) * 1975-08-11 1976-11-09 Bell Telephone Laboratories, Incorporated Method and apparatus for detecting faults in buried insulated conductors
US4438389A (en) * 1979-08-18 1984-03-20 Geodate Limited Method for utilizing three-dimensional radiated magnetic field gradients for detecting serving faults in buried cables
US4518911A (en) * 1983-01-19 1985-05-21 Perkins Research & Mfg. Co., Inc. Cable test apparatus
US4896117A (en) * 1987-10-24 1990-01-23 Radiodetection Limited Method of and apparatus for tracing faults in electrical conductors
US5210497A (en) * 1989-06-29 1993-05-11 Radiodetection, Ltd. Cable fault tracing systems
US6819115B1 (en) * 1999-08-11 2004-11-16 Aegis Pty., Ltd. Fault location device and method
US6867596B1 (en) * 2003-01-23 2005-03-15 Mclaughlin Manufacturing Company, Inc. Fault detection system
US20130110322A1 (en) * 2010-07-07 2013-05-02 Husqvarna Ab Communication and Safety Device for Boundary Aided Systems
US20160169953A1 (en) * 2013-06-28 2016-06-16 Pr Electronics A/S System and method for detection of wire breakage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE2151567A1 (en) * 2021-12-21 2023-04-25 Husqvarna Ab Improved manner of detecting wire break for a robotic working tool system
SE545170C2 (en) * 2021-12-21 2023-04-25 Husqvarna Ab Improved manner of detecting wire break for a robotic working tool system

Also Published As

Publication number Publication date
SE542098C2 (en) 2020-02-25

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