Floor cleaning system, floor cleaning apparatus, and method for operating a floor cleaning system or a floor cleaning apparatus

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Solution Overview

Problem

Existing floor cleaning systems lack the ability to provide additional information regarding cleaning results and interactions with the environment, making it difficult to optimize cleaning paths and ensure effective cleaning operations.

Innovation Solution

The proposed floor cleaning system includes a self-driving and self-steering device equipped with a control unit, sensor unit, cleaning units, and display units. This system allows for the storage and display of cleaning paths linked to cleaning events and interaction events, providing additional information such as cleaning performance and environmental interactions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If cleaning paths are stored with only basic navigation information, then the system is simple to operate, but additional information about cleaning events and interactions is lost

Engineering Contradiction:
Improvecleaning event informationVSAvoiddata storage structure
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent implements a nested data structure where cleaning path information contains nested cleaning event information, which in turn contains nested interaction event information. This hierarchical nesting allows comprehensive information storage while maintaining a manageable data structure that can be processed efficiently by the control unit.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent adds a temporal dimension to the cleaning path data by associating cleaning events and interaction events with specific positions and timestamps along the cleaning path. This transforms the data from a simple 2D path representation to a multi-dimensional structure that includes spatial, temporal, and event-type dimensions, enabling comprehensive information retention without proportional increase in operational complexity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If cleaning paths are displayed with detailed cleaning events and interaction events, then cleaning performance can be optimized, but the display complexity increases

Engineering Contradiction:
Improvecleaning performanceVSAvoiddisplay system
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements feedback mechanisms where cleaning events and interaction events are displayed on the cleaning path to provide operators with real-time and historical information about cleaning performance. This feedback enables operators to identify areas requiring re-cleaning, understand interaction patterns with obstacles, and optimize future cleaning operations based on accumulated data from previous runs.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent segments the displayed information into distinct categories (cleaning events, interaction events, path segments) that can be independently controlled and displayed. This segmentation allows the display system to present detailed information in an organized manner, reducing perceived complexity while maintaining comprehensive information availability for performance optimization.

Inventive Principle:
Principle #1Segmentation

3Productivity

If the system stores and processes comprehensive cleaning event data, then cleaning path optimization is improved, but energy consumption increases

Engineering Contradiction:
Improvecleaning path optimizationVSAvoiddata processing energy
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent performs preliminary processing of cleaning event data during the cleaning operation itself, organizing and storing information in a structured format as events occur. This preliminary action reduces the computational burden during subsequent path optimization operations, as the data is already organized and ready for analysis, thereby reducing energy consumption during optimization cycles.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements selective data processing where the level of detail stored and processed depends on predefined parameters such as cleaning importance, interaction type, and path segment criticality. By changing processing parameters dynamically based on situation, the system optimizes the balance between comprehensive data collection and energy consumption, focusing computational resources on the most relevant cleaning events.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP4374237B1Floor cleaning system, floor cleaning apparatus, and method for operating a floor cleaning system or a floor cleaning apparatus
Publication Date: 2025.04.16 ALFRED KARCHER SE & CO KG
  • EP4374237B1 patent drawingFigure 1
  • EP4374237B1 patent drawingFigure 2
  • EP4374237B1 patent drawingFigure 3

AI summary

The invention relates to a floor cleaning system comprising: a self-propelled and self-steering floor cleaning apparatus (10) for cleaning a floor surface (16); at least one controllable display unit (60, 120, 122); and at least one memory unit (46, 124, 126), wherein the floor cleaning apparatus (10) comprises a running gear (22) for travelling on a floor surface (16), a control unit (24), a sensor unit (44), at least one cleaning unit (26) and an operating unit (56), wherein surroundings can be detected by means of the sensor unit (44) in order to locate and/or navigate the floor cleaning apparatus (10), in particular during movement, wherein at least one cleaning path (68) on the floor surface (16) can be stored or is stored in the at least one memory unit (46, 124, 126), wherein the floor cleaning apparatus (10) is designed and configured to create a cleaning path (68), which can be stored in the memory unit (46, 124, 126), in a teaching mode of operation while being guided by an operator (66) at the operating unit (56), and wherein at least one cleaning event (92) relating in particular to the at least one cleaning unit (26), and/or at least one interaction event (90) relating to an interaction of the floor cleaning apparatus (10) with the surroundings (18) can be stored or is stored in the cleaning path (68) in a position-specific manner, and wherein the cleaning path (68) can be displayed on the at least one display unit (60, 120, 122) in a manner that is associated with the at least one cleaning event (92) and/or the at least one interaction event (90). The invention further relates to a floor cleaning apparatus and to a method for operating a floor cleaning system or a floor cleaning apparatus.