Henna Applicator with Motion Detection and Auto-Pause
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Solution Overview
Problem
Existing methods for applying semi-permanent body tattoos, such as henna, are prone to inaccuracies and disruptions due to manual application, requiring steady hand movement and prolonged time, especially for intricate designs, and lack mechanisms to detect and pause skin surface movements during the application process.
Innovation Solution
A system comprising a color applicator unit, scanning device, and axle assembly, integrated with a controller and user interface, which scans the body surface, detects movements, and pauses the application process if displacement exceeds a threshold, allowing for precise and accurate replication of designs by resuming from the exact position after user input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual application method is used, then flexibility and simplicity are maintained, but replication accuracy and design precision deteriorate
Solution Approach 1:
The system uses a scanning device to create a digital copy of the desired design pattern and the body surface topography. This digital copy is then used to guide the color applicator unit, ensuring precise replication of the design while eliminating manual drawing errors. The copying principle allows the system to maintain simplicity of operation while achieving high replication accuracy through automated pattern transfer.
2Adaptability or versatility
If manual application is used for intricate designs, then design complexity can be achieved, but application time increases significantly
Solution Approach 1:
The system performs preliminary scanning and digital modeling of the body surface and design pattern before actual color application. The controller pre-calculates the application path and parameters based on the scanned topography and desired design. This preliminary action allows intricate designs to be replicated quickly and accurately without manual drawing time, as the system automatically executes the pre-planned application sequence.
3Productivity
If color application continues without interruption, then productivity is maintained, but design accuracy deteriorates due to skin movement
Solution Approach 1:
The system incorporates a displacement sensor that continuously monitors skin surface movement during color application. When movement exceeds a predetermined threshold, the system automatically pauses the application process through feedback control. This prevents accuracy degradation while maintaining productivity, as the system only interrupts when necessary and can resume from the exact pause point without restarting the entire process.
4Measurement precision
If steady hand movement is required, then manual control precision can be maintained, but operator fatigue increases leading to unpredictability
Solution Approach 1:
The system replaces the mechanical control of manual hand movement with an automated robotic color applicator unit guided by the controller. The applicator is driven by precise motor control systems that execute the pre-calculated application path, eliminating human fatigue and hand steadyness requirements. This substitution ensures consistent replication accuracy throughout the entire application process, regardless of operator condition.
Data Source
AI summary
The present invention relates to a system for applying a coloring substance preferably henna on at least one surface of the human body. The device comprises a scanning device configured to scan the body surface and detect movements of the body surface, a color applicator unit to apply the coloring substance onto at least one surface of human body and the controller to coordinate the scanning device and the color applicator unit to work cooperatively to ensure that an accurate replica of the desired design is formed on the surface of the human body. The system has an added advantage of being able to halt the color application process on detecting the displacement of the body surface during the color application process.