Electric Toothbrush Motion Sensor Feedback Loop
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Solution Overview
Problem
Current electric toothbrush systems provide limited feedback to users on correcting deficiencies in brushing technique, often leaving users unsure of how to improve their oral hygiene practices.
Innovation Solution
An electric toothbrush device equipped with vibration means, a controller, a motion sensor, and a signal analysis unit that analyzes motion data to produce feedback signals, adjusting vibrations based on the analysis to provide real-time feedback and correct brushing techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If motion sensors and signal analysis units are added to provide real-time feedback, then brushing technique correction is improved, but device complexity increases
Solution Approach 1:
The patent combines the motion sensor, signal analysis unit, controller, and vibration means into an integrated toothbrush system. The motion sensor detects brushing motions, the signal analysis unit processes the motion data to generate feedback signals, and the controller adjusts vibration accordingly - all within a single device that eliminates the need for external monitoring equipment.
Solution Approach 2:
The system implements a closed-loop feedback mechanism where motion sensors continuously monitor brushing technique, the signal analysis unit evaluates the motion data against proper brushing patterns, and the controller provides real-time corrective feedback by adjusting vibration parameters. This allows users to immediately correct improper brushing motions.
2Loss of information
If vibration is continuously adjusted based on feedback signals, then brushing technique correction is improved, but energy consumption increases
Solution Approach 1:
The controller adjusts vibration periodically based on detected brushing motions rather than continuously. When improper brushing is detected, the controller modifies vibration parameters (such as frequency or amplitude) to provide corrective feedback, then returns to normal operation once proper technique is restored, creating a periodic rather than continuous adjustment cycle.
3Loss of information
If the system provides detailed real-time feedback, then user understanding of correct technique is improved, but ease of operation deteriorates due to setup complexity
Solution Approach 1:
The toothbrush system is designed to automatically detect and analyze brushing motions without requiring user setup or configuration. The motion sensors automatically monitor brushing technique, the signal analysis unit automatically evaluates the data, and the controller automatically provides feedback - the system serves itself by eliminating the need for manual programming or setup by the user.
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 enhances user feedback and helps correct brushing deficiencies by adjusting vibration speed and timing, providing tactile and haptic feedback to improve brushing technique and prevent over-brushing or brushing too hard.
Implementation Method 1
a motion sensor for sensing motion of the toothbrushing device to produce motion data; The motion sensor may be an accelerometer and the motion data may be accelerometer data
Implementation Method 2
vibration means for producing vibration of a toothbrush head; The vibration means may be, for example, a motor or a piezoelectric device, such as a piezoelectric crystal
Implementation Method 3
a piezoelectric device, such as a piezoelectric crystal
Data Source
AI summary
An electric toothbrushing device is disclosed, the device comprising vibration means for producing vibration of a toothbrush head and a controller for controlling the vibration means. The device also comprises a motion sensor for sensing motion of the toothbrushing device to produce motion data, and a signal analysis unit for analysing the motion data to produce a feedback signal. The controller is arranged to adjust the vibration produced by the vibration means in dependence on the feedback signal. Such a configuration can be used to improve the feedback provided to the user and/or help to correct deficiencies in the user's brushing technique.