Toothbrush Pressure Sensing With Vibration Feedback Control
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Solution Overview
Problem
Conventional electric toothbrushes lack real-time pressure adjustment capabilities to prevent tissue damage from chronic high pressure brushing, which can lead to enamel erosion and gum recession, and existing solutions are often complex or expensive.
Innovation Solution
An oral care device equipped with vibrational sensors and a processor that detects brushing pressure and adjusts the motor intensity in real-time to maintain optimal pressure levels, using machine learning and feedback mechanisms to ensure safe brushing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional electric toothbrushes use high pressure brushing to improve cleaning effectiveness, then cleaning performance is improved, but tissue damage occurs including enamel erosion and gum recession
Solution Approach 1:
The patent implements a feedback mechanism where a sensor detects the pressure applied by the toothbrush head in real-time, and this information is fed back to a processor that automatically adjusts motor power to maintain pressure within a safe range, thus preventing tissue damage while preserving cleaning effectiveness
Solution Approach 2:
The system dynamically changes the operating parameters (motor power, vibration frequency) based on detected pressure conditions, adjusting these parameters in real-time to keep pressure within optimal boundaries for both effective cleaning and tissue protection
2Ease of operation
If conventional electric toothbrushes provide pressure feedback through haptic feedback, visual LEDs, audible warnings, or phone applications, then user awareness of pressure is improved, but device complexity and cost increase
Solution Approach 1:
The toothbrush system performs self-regulation by automatically detecting pressure and adjusting its own motor power without requiring external feedback devices or complex user interactions, thereby reducing device complexity while maintaining ease of operation
Solution Approach 2:
The patent replaces complex mechanical pressure feedback systems (multiple sensors, actuators, display components) with a simplified electronic control system that uses a single pressure sensor and processor to automatically regulate motor output, reducing overall system complexity
3Measurement precision
If conventional electric toothbrushes provide pressure feedback through multiple sensors and feedback mechanisms, then pressure detection accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The patent extracts and utilizes the motor's existing operational characteristics (current draw, power consumption) as indirect pressure indicators, eliminating the need for separate, expensive pressure sensors while maintaining adequate measurement precision for pressure regulation
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
The device effectively prevents tissue damage by automatically adjusting brushing pressure to a safe level, reducing the risk of enamel erosion and gum recession while providing a user-friendly, affordable solution.
Implementation Method 1
a vibrational sensor configured to determine vibrational data emitted by the oral care device in use
Data Source
AI summary
An oral care system including an oral care device and a processor. The oral care device includes a head having cleaning elements and a vibrational sensor configured to determine vibrational data emitted by the oral care device in use. The processor is operably coupled to the vibrational sensor and is configured to: determine, based on the vibrational data, an applied pressure of the cleaning elements upon an oral cavity of a user; determine an optimal pressure associated with the oral cavity of the user and a non-optimal pressure associated with the oral cavity of the user; and based on the applied pressure of the cleaning elements upon the oral cavity being substantially the non-optimal pressure, cause the applied pressure of the cleaning elements upon the oral cavity to be substantially the optimal pressure.