Improved lift/collison detection

A technology of collision detection and robotics, applied in control/adjustment systems, vehicle position/route/height control, non-electric variable control, etc., can solve problems such as injury or damage, and achieve the effect of reducing assembly time

Active Publication Date: 2017-11-28
HUSQVARNA AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, collision detection affects the operating mode of the robotic work tool and affects ongoing operations (for example, by changing direction), but does not abort the operation
[0003] Additionally, many robotic work tools, such as lawnmower robots, carry work

Method used

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  • Improved lift/collison detection
  • Improved lift/collison detection
  • Improved lift/collison detection

Examples

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[0027] The disclosed embodiments will now be described more fully with reference to the accompanying drawings, which illustrate some embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to the art. technical staff. Like reference numerals refer to like elements throughout.

[0028] figure 1 A schematic overview of a robotic work tool 100 having a body 140 and a plurality of wheels 130 is shown. exist figure 1 In the exemplary embodiment, the robotic work tool 100 has four wheels 130 , two front wheels 130 ′ and two rear wheels 130 ″. At least some of the wheels 130 are drivably connected to at least one electric motor 150 . It should be noted that even though the description herein focuses on an ele...

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Abstract

A robotic work tool system (200) comprising a robotic work tool (100) comprising a lift/collision detection sensor (190), said lift/collision detection sensor (190) comprising a polarity element (191) and at least a first sensing element (192') and a second sensing element (192"), wherein the polarity element (191) has a first and a second polarity and wherein the first and second sensing elements are configured to each sense a polarity of the first polarity element (191). The robotic work tool (100) is configured to detect a polarity change in the first sensing element (192') and in the second sensing element (192'') and in response thereto determine that a lift has been detected, or detect a polarity change in the first sensing element (192') but not in the second sensing element (192") and in response thereto determine that a collision has been detected.

Description

technical field [0001] The present application relates to methods and robotic work tool systems for improved collision and lift detection for robotic work tools, and more particularly to methods and robotic work tool systems for improved collision detection and lift detection differentiation for robotic work tools. Background technique [0002] Contemporary robotic work tools are designed to operate in areas with both permanent and temporary obstructions. An example is a garden with a fountain. The fountain may have no boundary markers, but the robotic work tool should be able to detect that it has hit an obstacle so that it can continue in the other direction instead of stopping when jostling the fountain. Therefore, collision detection affects the operating mode of the robotic work tool and affects ongoing operations (for example, by changing direction), but does not abort the operation. [0003] Additionally, many robotic work tools, such as lawn mower robots, carry wor...

Claims

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Application Information

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IPC IPC(8): A01D34/00
CPCA01D34/008G05D2201/0208G05D1/0227G05D2201/0215
Inventor 乔纳森·比约恩安德斯·舍格伦
Owner HUSQVARNA AB
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