Smart Grooming Device with Optical Boundary Detection
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Solution Overview
Problem
Users face challenges in precisely guiding shaving devices for trimming or cutting their own hair, especially in hard-to-reach areas, leading to imprecise styles and potential skin damage.
Innovation Solution
The development of a smart personal grooming device, referred to as the AutoEdger, which uses image acquisition and analysis to determine when and how to cut or trim hair. This device includes a camera and sensor to control a trimmer or blade, allowing for precise trimming and cutting without manual assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual assistance is used for precise shaving, then trimming precision is improved, but device complexity and ease of operation are worsened
Solution Approach 1:
The shaving device performs self-guidance through integrated sensors (optical, capacitive, acoustic) that automatically detect skin contours and hair boundaries, eliminating the need for manual guidance by a second person while maintaining precise trimming edges
Solution Approach 2:
Manual mechanical guidance is replaced with optical sensors and image processing algorithms that automatically identify cutting boundaries and guide the blade path, substituting human visual-mechanical coordination with automated optical-mechanical systems
2Ease of operation
If manual cutting is performed without assistance, then ease of operation is improved, but trimming precision and safety are worsened
Solution Approach 1:
Real-time feedback from optical sensors, capacitive sensors, and acoustic sensors continuously monitors the distance between blade and skin, automatically adjusting blade position and cutting depth to maintain precise trimming while preventing skin contact and injury
Solution Approach 2:
The system performs preliminary detection of skin contours and hair boundaries using multiple sensors before cutting begins, pre-planning the safe cutting path and establishing boundary markers to guide subsequent trimming operations
3Manufacturing precision
If beard stencils are used for self-styling, then trimming precision is improved, but ease of operation and safety are worsened
Solution Approach 1:
Physical beard stencils are replaced with digital image processing and optical sensor systems that project virtual boundaries and detect actual hair edges, allowing precise style replication without manual stencil placement and reducing skin contact risks
4Manufacturing precision
If chemical markers are used for style definition, then trimming precision is improved, but ease of operation and safety are worsened
Solution Approach 1:
Chemical markers and dyes are replaced with optical sensor detection and image processing algorithms that automatically identify and mark boundary locations through visual feedback, eliminating chemical application steps while maintaining precise boundary definition
Solution Approach 2:
The chemical marking step is extracted and eliminated entirely, with boundary detection performed directly through optical sensing and image processing, keeping only the essential function of boundary identification without chemical substances
Data Source
AI summary
A smart personal grooming device or otherwise cutting device comprises a body with a handle, a head portion, a hair cutting implement, and a camera oriented toward the hair cutting implement. The camera captures images of a skin area and a hair area of a user and a processor detects, based the images, each of the skin area and the hair area. A boundary is defined between the skin area and the hair area. The processor determines a control state based on the boundary that causes the processor to implement one or more algorithms controlling an operating or feature of the smart personal grooming device or otherwise cutting device, including, for example, activating the cutting implement to cause the cutting implement to remove hair in a hair area of the user.