Bioimpedance-Adaptive Voltage Control for Electric Treatment Devices
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Solution Overview
Problem
Users of electric treatment devices face complications in setting the intensity of electric stimulation, which can lead to unpleasant sensations due to varying skin conditions, requiring manual adjustment and a time-consuming process.
Innovation Solution
An electric treatment device equipped with an impedance detector, voltage controller, and timer that measures bioelectrical impedance to adjust the voltage increase rate based on skin conditions, allowing for optimal treatment intensity without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the voltage value is rapidly increased to the target value at treatment start, then the treatment efficiency is improved, but the user may experience unpleasant sensations due to varying skin conditions
Solution Approach 1:
The system performs preliminary impedance measurement before treatment to predict the appropriate voltage increase rate. This preliminary action allows the system to prepare the optimal voltage application strategy in advance, preventing unpleasant sensations while maintaining treatment efficiency.
Solution Approach 2:
The voltage increase rate is dynamically adjusted based on the measured impedance value. The system transitions from a fixed voltage application approach to a dynamic one where the voltage increase rate changes according to the user's skin condition, resolving the contradiction between rapid voltage increase and comfort.
2Ease of operation
If the user manually adjusts the electric stimulation strength, then the comfort is improved, but the operation complexity increases
Solution Approach 1:
The system performs self-adjustment of the voltage increase rate based on impedance measurement without requiring user intervention. The device automatically determines the optimal voltage application strategy, eliminating the need for manual adjustment while maintaining comfort.
Solution Approach 2:
The system uses impedance measurement as feedback to automatically adjust the voltage increase rate. This feedback mechanism enables the system to adapt to individual user conditions without requiring manual input, simplifying operation while maintaining comfort.
3Adaptability or versatility
If the impedance measurement is performed, then the treatment optimization is improved, but the device complexity increases
Solution Approach 1:
The impedance measurement function serves multiple purposes: it characterizes skin conditions for voltage adjustment and can potentially serve other treatment optimization functions. This multi-functionality justifies the added complexity by providing comprehensive treatment optimization capabilities.
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 comfortable and optimal electric stimulation tailored to the user's skin state without the need for complex user adjustments, reducing the likelihood of unpleasant sensations.
Implementation Method 1
an impedance detector that measures bioelectrical impedance at a treatment site of a body of a user, using a plurality of electrodes that come into contact with the treatment site
Data Source
AI summary
An electric treatment device includes an impedance detector to measure bioelectrical impedance at a site of a body of a user by using electrodes in contact with the site, a voltage controller to perform treatment of the site by controlling a voltage applied to the electrodes, and a timer to set a target time from when treatment of the site is started by the voltage controller to when the voltage value of the applied voltage reaches the target voltage value, based on the measured bioelectrical impedance. The greater the measured bioelectrical impedance is, the shorter the timer sets the target time. The voltage controller increases the voltage value of the applied voltage to the target voltage value based on the set target time.