Shaver Sensor Feedback for Blade Wear and Skin Irritation

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Solution Overview

Problem

Shaving technologies lack efficiency and effectiveness, often leading to skin irritation, missed areas, and dull blades, with users continuing to use suboptimal shavers due to lack of feedback on shaving technique and blade condition.

Innovation Solution

A shaving system equipped with sensors that detect characteristics such as proximity, movement, pressure, and temperature, coupled with a processor to analyze data and provide real-time feedback on shaving technique and blade condition, guiding users for improved efficiency and suggesting when to replace blades.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If users continue using shavers without feedback on technique and blade condition, then device complexity remains low, but shaving effectiveness and reliability deteriorate due to dull blades and poor technique

Engineering Contradiction:

Improveshaving effectivenessVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements multiple sensors (proximity, accelerometer, force, temperature) that continuously monitor shaving parameters and provide real-time feedback to users through indicators. This feedback loop enables users to adjust their technique and understand blade condition, directly improving shaving effectiveness and reliability while accepting increased system complexity

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces subjective user judgment about blade condition and technique with objective sensor-based detection systems. Mechanical and physical sensors automatically detect proximity, movement, pressure, and temperature, substituting human perception with precise measurement systems that improve reliability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If users apply excessive pressure or use poor technique, then ease of operation is maintained, but skin irritation and harmful effects increase

Engineering Contradiction:

Improveshaving easeVSAvoidskin irritation

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

Force sensors and proximity sensors provide real-time feedback on pressure application and shaving technique. The system monitors these parameters and can alert users when excessive force is applied, allowing them to adjust their technique to reduce skin irritation while maintaining ease of operation

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The temperature sensor detects skin temperature changes that indicate irritation before it becomes severe. By providing early warning through the indicator system, the patent allows users to adjust their technique proactively to prevent further skin damage

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Productivity

If users shave with dull blades, then productivity is maintained by continuing use, but shaving effectiveness and skin health deteriorate

Engineering Contradiction:

Improveshaving frequencyVSAvoidshaving quality

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The sensor system continuously monitors shaving parameters including force required, temperature changes, and stroke patterns. When blades become dull, these parameters change in characteristic ways that the system detects and communicates to users, enabling them to replace blades at optimal intervals to maintain both productivity and quality

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The indicator system acts as an intermediary between the sensor data and user decision-making. It translates complex sensor readings into simple visual or audible signals that clearly indicate when blade replacement is needed, bridging the gap between continuous monitoring and discrete user action

Inventive Principle:

Principle #24Intermediary (Mediator)

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

Enhances shaving efficiency by providing real-time feedback on technique and blade condition, reducing skin irritation and ensuring optimal shaving performance, while automatically suggesting blade replacement for improved user experience.

Implementation Method 1

the sensors may include a proximity sensor

Methodology Applied

Scientific EffectProximity sensing:

Implementation Method 2

the sensors may include an accelerometer

Methodology Applied

Scientific EffectAcceleration detection: Accelerometer

Implementation Method 3

the sensors may include a force sensor

Methodology Applied

Scientific EffectForce sensing:

Implementation Method 4

the sensors may include a temperature sensor

Methodology Applied

Scientific EffectTemperature sensing:

Data Source

PatentUS11504866B2Shaver and methods for detecting shaving characteristics

Publication Date: 2022.11.22 BIC VIOLEX SA

AI summary

A shaving system including a shaver having a handle, a razor cartridge, and one or more sensors, wherein the one or more sensors may be configured to detect a characteristic of at least one of the shaver or a body part of a user and to generate a sensor signal representative of the characteristic. A processor may be operably coupled to the one or more sensors and may have at least one algorithm stored thereon for analyzing the sensor signal to determine a status of the shaving session. An indicator may be operably coupled to the processor, and the indicator may be configured to provide feedback to the user regarding the status of the shaving session.