Method and system for guiding a robotic garden tool to a predetermined position

US8942862B2 · kind B2 · utility

Assignee

• HUSQVARNA AB · SE

Inventors

• Olle Markusson · Bankeryd, SE
• Gunnar Andersson
• Johan Adolfsson · Lund, SE
• Patrick Pettersson · Aneby, SE
• Johan Öster · Huskvarna, SE
• Patrik Jägenstedt · Tenhult, SE

Key dates

• Filing date: Mar 17, 2010
• Grant date: Jan 27, 2015
• Expiry date: Oct 18, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G05D1/0265
• WIPO field: Control
• WIPO sector: Instruments

Abstract

The present invention relates to a method (400) and a system (100) for guiding a robotic garden tool to a predetermined position. The robotic garden tool includes a control unit (104) and a sensor unit (102) to detect guiding signals. The sensor unit (102) detects a first guiding signal (110) from a first signal source (106) and the robotic garden tool follows the first guiding signal (110) at a variable distance from the first signal source (106) towards the predetermined position. While within a predetermined distance (D) from the predetermined position, the sensor unit (102) detects a second guiding signal (112) from a second signal source (108). Within the predetermined distance (D), the robotic garden tool follows one of the first and the second guiding signals (110 or 112) towards the predetermined position at a pre-configured distance from the corresponding signal source.