Self-Service Car Wash Control for Adaptive Cleaning Programs

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Solution Overview

Problem

Existing self-service car wash systems lack flexibility and adaptability, failing to consider the current condition of the vehicle or user preferences, leading to inefficient use of resources and energy.

Innovation Solution

A control unit that reads configuration signals from a user interface and sensor data to dynamically configure cleaning processes, allowing users to customize washing programs based on situational factors, including environmental conditions and vehicle state, and controls individual components of the car wash system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If pre-configured wash programs with fixed sequences are used, then the system is simple to operate, but the system lacks flexibility and cannot adapt to different vehicle conditions or user preferences

Engineering Contradiction:
Improveease of operationVSAvoidadaptability
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The wash program transitions from a fixed, static sequence to a dynamic, configurable sequence where individual wash steps can be independently selected, activated, or deactivated based on user preferences and vehicle conditions. The control unit allows runtime configuration of wash programs, enabling the system to adapt between simplicity and flexibility as needed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The wash program is divided into discrete, independently controllable wash steps (e.g., pre-wash, main wash, rinse, waxing). Each step can be individually configured and activated, allowing users to select only the necessary steps for their specific needs, thereby achieving both ease of operation and adaptability.

Inventive Principle:
Principle #1Segmentation

2Reliability

If fixed wash programs are used, then the system is reliable and easy to control, but resource consumption cannot be optimized based on actual vehicle condition

Engineering Contradiction:
ImprovereliabilityVSAvoidenergy consumption
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The system allows dynamic adjustment of wash program parameters such as water temperature, pressure, and chemical dosage based on detected vehicle conditions (e.g., degree of soiling). This enables optimization of resource consumption while maintaining reliable and effective cleaning results.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The control unit receives input signals from sensors that detect vehicle conditions and uses this feedback information to automatically adjust the wash program configuration. This closed-loop control ensures energy and resource optimization while maintaining cleaning effectiveness.

Inventive Principle:
Principle #23Feedback

3Adaptability or versatility

If users are given full configuration freedom, then the system becomes highly adaptable, but the system complexity and difficulty of operation increase

Engineering Contradiction:
ImproveadaptabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The control unit serves multiple functions: it can execute fully automatic pre-configured programs for simple operation, allow semi-automatic configuration for moderate adaptability, or enable full manual configuration for maximum adaptability. This multi-functional design accommodates different user needs without proportionally increasing system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Device complexity

If pre-programmed wash sequences are used, then the control system is simple, but the system cannot respond to real-time conditions or user preferences

Engineering Contradiction:
Improvedevice complexityVSAvoidadaptability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The wash program transitions from a fixed, static sequence to a dynamic, configurable sequence where individual wash steps can be independently selected, activated, or deactivated based on user preferences and vehicle conditions. The control unit allows runtime configuration of wash programs, enabling the system to adapt between simplicity and flexibility as needed.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3408146B2Configuration of a cleaning process in a self-service vehicle wash
Publication Date: 2026.03.11 WASHTEC HLDG
  • EP3408146B2 patent drawingFigure 1~2
  • EP3408146B2 patent drawingFigure 3
  • EP3408146B2 patent drawingFigure 4

AI summary

The invention relates to a self-service vehicle wash (1) comprising an electronic control unit (10), to a control unit (10), and to a method for controlling the self-service vehicle wash (1) on the basis of configuration signals. According to the invention, the washing process is individualized and adaptively configured in response to the configuration signals.