Skincare Device with Optical Encoder and IMU for Brushhead Identity
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Solution Overview
Problem
Current skincare devices lack the ability to customize and optimize skin treatment based on real-time kinematic and optical data, leading to inefficient application of forces and inadequate targeting of specific skin conditions.
Innovation Solution
A personal skincare device equipped with a motor assembly for oscillating brushheads, an inertial measuring unit for kinematic measurements, and optical encoders for capturing images and detecting fiducial markers on the brushhead, allowing for precise determination of the brushhead's position and adjustment of treatment parameters based on user-applied forces and skin conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple sensors (IMU, optical encoders, force sensors) are integrated into the skincare device to enable real-time detection of kinematic and optical data, then the ability to customize and optimize skin treatment is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple sensing functions (kinematic detection via IMU, optical detection via encoders, force detection via force sensors) into a single integrated skincare device. This merging of previously separate functions into one unified device enables comprehensive real-time monitoring while maintaining a cohesive user experience, resolving the contradiction by achieving high adaptability through integration rather than through multiple separate devices
Solution Approach 2:
The skincare device is designed with multi-functionality, serving as both a cosmetic application device and a diagnostic platform. The same device structure houses components that perform mechanical exfoliation, real-time kinematic tracking, optical pattern recognition, and force monitoring, allowing one device to fulfill multiple functions that would traditionally require separate systems
2Measurement precision
If real-time detection of brushhead position and user-applied force is implemented using IMU and force sensors, then treatment optimization is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical measurement systems with sensor-based detection. Instead of using mechanical encoders or physical measurement apparatus, the system employs an IMU (inertial measurement unit) and force sensors to detect brushhead position, orientation, and user-applied forces. This substitution achieves high measurement precision while avoiding the mechanical complexity of traditional measurement systems
Solution Approach 2:
The IMU and force sensors are integrated directly into the device structure, allowing the device to self-monitor its own operational parameters. The sensors detect forces and positions inherently as part of the device's normal operation, without requiring external measurement equipment or complex setup procedures
3Measurement precision
If optical encoders are used to detect fiducial markers on the brushhead, then brushhead identity detection is improved, but the device complexity increases
Solution Approach 1:
The patent uses fiducial markers with distinct visual characteristics (patterns, colors, or reflective properties) on the brushhead that can be detected by optical encoders. These markers provide unique identifiers for different brushhead types without requiring complex electronic identification systems. The optical encoder captures images of these visual markers, and image processing algorithms identify the brushhead identity based on the marker patterns
Solution Approach 2:
Instead of using complex electronic or RFID identification systems, the patent uses visual copies (fiducial markers) that can be captured by optical sensors. The markers are optical representations of brushhead identity information that can be detected and processed through image capture and analysis, achieving accurate identification through optical copying rather than direct electronic communication
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
Enables tailored skin care by accurately detecting and responding to different skin conditions, optimizing treatment by adjusting oscillation frequency and force to ensure effective exfoliation and comfort, thereby improving skin care outcomes.
Implementation Method 1
an inertial measuring unit (IMU) configured to determine kinematic measurements of the device
Implementation Method 2
a first optical encoder including a light source and an optical sensor configured to capture images
Data Source
AI summary
A skincare device includes a brushhead including a marking disposed on a surface of the brushhead, the marking including a shape and a color; a body including a motor assembly configured to oscillate the brushhead; and a first optical encoder configured to detect the marking and determine an identity of the brushhead.