Device for working the soil

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Solution Overview

Problem

Existing floor-working robots require manual transportation for maintenance and service, which can lead to contamination of the floor area due to leaking cleaning agents, falling dirt, or other issues, and existing solutions do not effectively manage the separation of charging and waste disposal positions.

Innovation Solution

A robot system that includes a movement unit and a processing unit, capable of detecting operating states and moving to predetermined positions for maintenance or waste disposal without disrupting floor cleaning, with optical or detectable markers indicating specific positions for charging and waste management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the robot moves manually for maintenance and service, then the robot can be transported to different locations, but the floor surface may become contaminated due to leaking cleaning agents, fallen debris, or other issues

Engineering Contradiction:
Improvemanual transport capabilityVSAvoidfloor contamination
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The robot autonomously navigates to predetermined positions for maintenance and service operations. The control unit detects when maintenance is needed and automatically moves the robot to the appropriate location, eliminating the need for manual transport that could cause floor contamination.

Inventive Principle:
Principle #25Self-service

2Quantity of substance

If the robot is equipped with a container for collecting dirt, then the processing unit can accumulate debris, but the container needs to be emptied periodically which requires external intervention

Engineering Contradiction:
Improvedirt collection capacityVSAvoidcontainer emptying operation
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The control unit monitors the fill level of the container and automatically navigates the robot to predetermined positions when the container needs emptying. This feedback mechanism ensures timely emptying without requiring constant manual monitoring, while the predetermined positions make the emptying operation convenient for users.

Inventive Principle:
Principle #23Feedback

3Adaptability or versatility

If the robot has a movable brush for processing the floor surface, then the brush can remove various types of dirt, but the brush may accumulate foreign objects that restrict its mobility

Engineering Contradiction:
Improvebrush cleaning capabilityVSAvoidbrush maintenance operation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system proactively monitors brush condition and automatically navigates the robot to predetermined maintenance positions before the brush mobility is severely restricted. This preliminary action prevents complete immobilization and makes maintenance operations more convenient by timing them optimally.

Inventive Principle:
Principle #10Preliminary action

4Productivity

If the robot operates autonomously without predetermined positions for maintenance, then the robot can clean the entire floor area, but the robot cannot efficiently return for service or maintenance

Engineering Contradiction:
Improvefloor cleaning coverageVSAvoidmaintenance response time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The floor area is divided into operational zones and predetermined maintenance positions. The robot efficiently cleans operational zones while knowing exactly where to return for maintenance. This segmentation allows the robot to maintain high productivity by minimizing non-productive travel time to maintenance locations.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3437538B1Device for working the soil
Publication Date: 2021.11.17 BSH HAUSGERATE GMBH
  • EP3437538B1 patent drawingFigure 1
  • EP3437538B1 patent drawingFigure 2
  • EP3437538B1 patent drawingFigure 3

AI summary

A robot comprises a motion unit for moving the robot across a floor surface and a processing unit for processing the traversed floor surface. A method for controlling the robot comprises the steps of detecting an operating state of the processing unit; determining that the detected operating state affects the processing; and controlling the motion unit to move the robot to a predetermined position assigned to the detected operating state.