Body composition detection device
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Solution Overview
Problem
Existing body composition detection methods using bioelectrical impedance analysis (BIA) are inaccurate due to moisture on the skin surface, particularly after exercise or shower, leading to significant impedance measurement errors.
Innovation Solution
A body composition detection device with integrated dehumidification assemblies that remove moisture from the skin surface before impedance measurement, ensuring accurate body impedance readings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If BIA method is used for body composition detection, then the measurement method is simple and easy to use, but accuracy is greatly affected by humidity on skin surface
Solution Approach 1:
The dehumidification assembly performs preliminary dehumidification of the skin surface before impedance measurement is conducted. This preliminary action removes moisture that would otherwise interfere with the measurement, ensuring accurate readings while maintaining the simplicity of the BIA method.
Solution Approach 2:
The dehumidification assembly acts as an intermediary component between the user's skin and the impedance measurement electrodes. It mediates the interaction by controlling the moisture level on the skin surface, allowing accurate impedance measurements to be taken even when the user's skin is naturally moist.
2Measurement precision
If dehumidification assembly is added to the detection device, then accuracy of body impedance measurement is improved, but device complexity increases
Solution Approach 1:
The dehumidification assembly is integrated with the impedance measurement electrodes into a single unified detector component. This merging of functions allows the device to perform both dehumidification and impedance measurement through one integrated assembly, reducing overall device complexity while maintaining measurement accuracy.
Solution Approach 2:
The detector is designed as a multi-functional component that simultaneously performs dehumidification, humidity sensing, and impedance measurement. This universal design consolidates multiple functions into a single component, avoiding the need for separate independent systems and thereby managing device complexity.
3Measurement precision
If dehumidification is performed continuously, then measurement accuracy is maintained, but energy consumption increases
Solution Approach 1:
The dehumidification assembly operates periodically rather than continuously. The control unit activates dehumidification only when humidity levels exceed a threshold or when measurement is required, then allows the system to rest. This periodic operation maintains measurement accuracy while significantly reducing overall energy consumption compared to continuous operation.
Solution Approach 2:
The humidity measurement assembly provides real-time feedback on skin surface humidity levels to the control unit. This feedback mechanism allows the system to intelligently control the dehumidification assembly, activating it only when moisture levels indicate a need for dehumidification, thereby optimizing energy consumption while maintaining measurement accuracy.
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
Improves the accuracy of body composition detection by minimizing the impact of skin moisture, providing reliable and precise measurements.
Implementation Method 1
the dehumidification assembly dehumidifies a body surface in contact with the impedance measurement assembly
Implementation Method 2
When different weak currents pass through a human body, fat, muscle, and other components in the human body have different electrical conductivity, and generate different body impedance
Data Source
Figure 1~2
Figure 3a~3c
Figure 4a~4b
AI summary
A body composition detection method and a device (100) are provided. The device (100) includes a housing (2), a support layer, and at least one detector (101, 102, 103, or 104). The detector (101, 102, 103, or 104) includes an impedance measurement assembly and a dehumidification assembly. The support layer includes a processor. Both the impedance measurement assembly and the dehumidification assembly are electrically connected to the processor. The impedance measurement assembly, the dehumidification assembly, and the processor are all disposed inside the housing (2). The impedance measurement assembly is embedded on an upper surface of the housing (2). An upper surface of the impedance measurement assembly is flush with or higher than the upper surface of the housing (2). The upper surface of the impedance measurement assembly is in contact with a human body during measurement. Because moisture on a body surface greatly affects body impedance measurement, the dehumidification assembly removes the moisture on the body surface before body impedance is measured, and measurement is performed after the body surface is dried. This can improve accuracy of the body impedance measurement, and further can improve accuracy for detecting a body composition by using the body impedance.