Adaptive Shaver Calibration for User Behavior

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Solution Overview

Problem

Existing personal care devices, such as electric shavers, struggle to adapt to individual user preferences and behaviors, leading to suboptimal shaving performance and user discomfort.

Innovation Solution

The personal care device incorporates a calibration device that adjusts working parameters based on detected behavioral parameters, using historical data to tailor settings to each user's unique habits and needs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the shaver provides various different operating modes and adjustment functions, then the adaptability to different user preferences is improved, but the device complexity increases

Engineering Contradiction:
Improveadaptability to user preferencesVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The shaver automatically adjusts its operating parameters by detecting user behavior patterns and autonomously selecting appropriate operating modes, eliminating the need for manual user configuration and simplifying the user interface while maintaining high adaptability

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system incorporates sensors that detect user handling behavior and provide feedback to the control unit, which then automatically adjusts operating parameters, creating a closed-loop system that adapts to user preferences without increasing apparent device complexity

Inventive Principle:
Principle #23Feedback

2Adaptability or versatility

If the user manually adjusts the operating modes, then the adaptability to individual needs is improved, but the ease of operation deteriorates

Engineering Contradiction:
Improveadaptability to individual needsVSAvoidease of operation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The shaver performs automatic adjustment of operating modes based on detected user behavior, making the device self-configuring and eliminating the burden of manual adjustment while maintaining high adaptability to individual user needs

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system pre-adjusts operating parameters based on detected user handling patterns before the user even becomes aware of the need for adjustment, proactively optimizing performance without requiring user intervention

Inventive Principle:
Principle #10Preliminary action

3Productivity

If the cutter speed is increased to increase shaving efficiency, then the productivity is improved, but the object-affected harmful factors increase due to skin irritation

Engineering Contradiction:
Improveshaving efficiencyVSAvoidskin irritation
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The shaver dynamically adjusts cutter speed based on real-time detection of user handling velocity and skin contact conditions, optimizing cutting speed for efficiency while automatically reducing speed when skin irritation risk is detected, achieving both high productivity and skin comfort

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the operating parameter of cutter speed dynamically based on detected behavioral parameters, adjusting between high speed for efficiency and low speed for skin comfort depending on the shaving context and user handling patterns

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3546151B1Personal care device
Publication Date: 2025.04.30 BRAUN GMBH
  • EP3546151B1 patent drawingFigure 1
  • EP3546151B1 patent drawingFigure 2
  • EP3546151B1 patent drawingFigure 3

AI summary

The present invention relates to a personal care device, in particular skin treatment device such as electric shaver, comprising an elongated handle for manually moving the personal care device along a body surface, a working head attached to said handle for effecting a personal care treatment to said body surface, at least one detector for detecting at least one behavioural parameter indicative of a user's behaviour when handling the personal care device, and and an adjusting mechanism for adjusting at least one working parameter of the working head in response to the detected behavioural parameter. A calibration device is provided for calibrating the relation between the adjustment of the at least one working parameter by the adjusting mechanism to the detected behavioural parameter in response to the history of the detected behavioural parameter as well as current values thereof.