Pool Cleaning Control Using Debris Density Feedback

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Solution Overview

Problem

Existing swimming pool cleaning robots often fail to effectively clean all areas of the pool due to pool geometry, cable constraints, and debris accumulation, and require manual intervention for filter maintenance, while advanced systems are costly and prone to image processing errors.

Innovation Solution

A swimming pool cleaning apparatus equipped with debris detection means, such as turbidity sensors and cameras, adjusts its cleaning strategy based on real-time debris density measurements to optimize cleaning time and efficiency, ensuring thorough pool cleaning without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the robot travels through the entire swimming pool surface, then cleaning coverage is improved, but the cable constraint and pool geometry prevent free movement and leave regions uncleaned

Engineering Contradiction:

Improvecleaning coverage areaVSAvoidmovement freedom

Core Design Contradiction:

Area of stationary objectVSEase of operation

Solution Approach 1:

The patent replaces cable-based mechanical power transmission with wireless power transmission technology, enabling the robot to move freely throughout the pool without cable constraints. This substitution allows the robot to access all areas including difficult-to-reach regions while maintaining continuous power supply and control.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Use of energy by moving object

If the robot operates for a predetermined time, then energy consumption is controlled, but particles remain after cleaning due to debris agglomeration in certain regions

Engineering Contradiction:

Improveenergy consumptionVSAvoidcleaning effectiveness

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent implements feedback mechanisms including sensors that detect debris density and particle accumulation in real-time. The control system processes this data and dynamically adjusts the robot's cleaning strategy, extending operation time in regions with high debris concentration and reducing it in already-clean areas, thereby optimizing both energy consumption and cleaning effectiveness.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent employs dynamic cleaning strategies where the robot continuously adapts its speed, aspiration power, and patrol routes based on real-time environmental conditions. The system modifies its operational parameters dynamically rather than following fixed predetermined patterns, allowing it to respond to varying debris distributions and pool conditions.

Inventive Principle:

Principle #15Dynamics

3Productivity

If image capturing means are used to detect debris, then cleaning optimization is achieved, but the system becomes costly and image processing quality is affected by luminosity variations

Engineering Contradiction:

Improvecleaning optimizationVSAvoidsystem cost and complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces expensive image capturing systems with cost-effective alternative sensors such as optical sensors, turbidity sensors, or simple light detectors. These cheaper sensors provide sufficient information for debris detection and cleaning optimization without the high cost and complexity of camera systems, while being less sensitive to luminosity variations.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent substitutes optical image processing systems with simpler sensing mechanisms that directly measure debris properties. Instead of capturing images and processing them through complex algorithms affected by lighting conditions, the system uses sensors that provide direct measurements of water clarity and particle concentration, eliminating the need for expensive imaging hardware and complex image processing software.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The apparatus enhances cleaning efficacy by adapting movement and aspiration power based on debris density, ensuring cleaner pools with reduced operational time and cost, and provides automated filter maintenance alerts.

Implementation Method 1

at least one hydraulic circuit for liquid circulation between at least one liquid inlet and at least one liquid outlet, through a filtration device of the cleaning unit

Methodology Applied

Scientific EffectHydraulic circuit:

Implementation Method 2

a pump designed to force water to circulate between at least one water inlet and at least one water outlet through the filtration device

Methodology Applied

Scientific EffectPump: Pump

Data Source

PatentUS12559963B2Pool cleaning apparatus with optimized control

Publication Date: 2026.02.24 ZODIAC POOL CARE EURO

AI summary

The invention relates to a pool cleaning apparatus including: a cleaning unit (100), at least one hydraulic system for circulating a liquid between at least one liquid inlet (103) and at least one liquid outlet (104) and through a filtration device of the cleaning unit (100), a pump suitable for forcing the circulation of water between the liquid inlet (103) and the liquid outlet (104) and through the filtration device, drive and guide means for moving the cleaning unit, and means for controlling said drive and guide means. The pool cleaning apparatus includes at least one debris detection means placed in the hydraulic system of the cleaning unit (100).