Smart Container Hydration Monitoring via Capacitive Sensing
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Solution Overview
Problem
Current methods for assessing hydration status are complex, invasive, and lack accuracy, especially in real-time and everyday settings, making it difficult to monitor hydration effectively in clinical and non-clinical environments.
Innovation Solution
A smart container system equipped with capacitive sensors and additional impedance sensors that monitor the amount of liquid consumed and the user's hydration level, providing real-time feedback and alerts through a user interface and communication with electronic devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If clinical grade bioimpedance-based devices use whole body measurement with 4 special electrodes applied to legs and arms, then measurement accuracy is improved, but device complexity and invasiveness increase, impacting person's ability to conduct everyday activities
Solution Approach 1:
The patent extracts the essential measurement function from complex clinical devices and implements it through simplified capacitive sensors integrated into everyday objects. The system uses only two electrodes (anode and cathode) instead of four specialized electrodes, placing them in common locations like bottle caps or container surfaces, thereby reducing complexity while maintaining measurement capability
Solution Approach 2:
The patent makes everyday objects like water bottles, cups, and containers serve dual purposes: their original function for holding liquids plus a new function for hydration monitoring. The capacitive sensors are integrated into these universal objects, allowing them to perform both their traditional role and physiological measurement simultaneously, eliminating the need for separate specialized devices
2Measurement precision
If smart weight scales assess TBW and ECW using whole body bioimpedance measured through the feet, then hydration monitoring is enabled, but ease of operation decreases as person must be continuously using the scale with bare feet
Solution Approach 1:
The system enables passive hydration monitoring where the capacitive sensors automatically measure hydration status whenever the object is naturally handled or placed down during daily activities. The sensors serve themselves by continuously monitoring without requiring active user participation, such as standing on a scale or manually operating a device, thereby maintaining measurement capability while significantly improving ease of operation
3Ease of operation
If capacitive sensors are integrated into smart containers to monitor liquid consumption and hydration levels, then non-invasive real-time monitoring is achieved, but device complexity increases due to sensor integration and data processing requirements
Solution Approach 1:
The patent combines multiple functions into a single integrated system where capacitive sensors, liquid level detection, consumption tracking, and hydration calculation are merged into one unified platform. The sensors are physically and functionally integrated directly into the container structure, eliminating the need for separate measurement devices and reducing overall system complexity despite the advanced monitoring 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
The system enables accurate and non-invasive monitoring of hydration levels, providing users with timely feedback to maintain optimal hydration, and can be integrated into everyday objects to promote continuous hydration monitoring.
Implementation Method 1
A capacitive sensor may be used to determine a capacitance signal in response to contact with a user's body
Implementation Method 2
Additional impedance sensors located on an exterior of the container may be used to determine a impedance signal and assess a hydration level of the user
Data Source
AI summary
A smart object may be used to monitor the hydration level of a person. The object has at least two impedance sensors that can be used to sense the complex impedance of a person when a tissue of the user comes into contact with the impedance sensors. The measured impedance can then be used to determine the hydration level of the person. In addition to using the impedance sensors to determine the hydration level of the person, the impedance sensors can also be used to capture an electrocardiogram for the person. The smart object may also be used with another smart object to determine the identity of the user or other physiological parameters of the user such as blood pressure.