Wearable Temperature Patch Correcting Skin Readings via Movement Data
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Solution Overview
Problem
Existing body temperature measurement methods are inaccurate when sudden changes in external temperature occur, as they fail to account for movements and environmental temperature fluctuations, leading to errors in continuous temperature monitoring.
Innovation Solution
A wearable temperature patch with a flexible base film, skin temperature sensor, external temperature sensor, inertia measurer, and controller that estimates body temperature by correlating skin and external temperatures, and corrects for sudden external temperature changes by using movement information to differentiate between temperature changes caused by movement or environmental factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If body temperature is measured continuously using a temperature sensor, then temperature monitoring is maintained, but measurement precision deteriorates when sudden external temperature changes occur
Solution Approach 1:
The patent introduces an intermediary correction mechanism that uses movement information as a mediator between the temperature sensor readings and the actual body temperature calculation. When movement is detected, the system applies a correction value to the temperature measurement, effectively filtering out the distortion caused by external temperature changes during movement, thus maintaining measurement precision while preserving continuous monitoring capability
Solution Approach 2:
The system implements feedback by continuously monitoring movement information and using it to dynamically adjust the temperature measurement. The controller receives movement data from the inertial measurer and feeds this information back to correct the temperature reading in real-time, creating a closed-loop system that maintains accuracy despite external temperature fluctuations during movement
2Device complexity
If temperature measurement is performed without considering movement, then device complexity is reduced, but measurement precision deteriorates due to temperature changes during movement
Solution Approach 1:
The patent merges the temperature sensing function with the movement detection function into a single integrated measurement system. The inertial measurer and temperature sensor work together in conjunction with the controller that processes both types of data, combining multiple measurement capabilities into one unified system that maintains precision without requiring separate complex systems
Solution Approach 2:
The system changes the parameter used for temperature measurement from raw sensor values to corrected temperature values that account for movement effects. By introducing movement information as a correcting parameter, the system adjusts the temperature measurement parameter dynamically, transforming simple sensor readings into accurate body temperature values without adding significant complexity
3Device complexity
If external temperature changes are not accounted for, then measurement system simplicity is maintained, but reliability of temperature records deteriorates
Solution Approach 1:
The patent uses movement information as an intermediary factor that mediates between the temperature sensor and the final temperature record. This intermediary correction mechanism filters out false temperature changes caused by external environment variations during movement, ensuring that only accurate body temperature changes are recorded, thereby enhancing reliability without significantly increasing system complexity
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 solution provides accurate and continuous body temperature measurement by accounting for sudden external temperature changes and movement, reducing errors and enhancing the reliability of temperature records, especially in dynamic environments like those experienced during the COVID-19 pandemic.
Implementation Method 1
a skin temperature sensor mounted on a lower surface of the first base film, being in contact with the target person's skin, and measuring a skin temperature
Implementation Method 2
an external temperature sensor mounted on an upper surface of the second base film and measuring an external temperature outside the target person's skin
Implementation Method 3
The first base film may have a heat conduction blocking slot formed for blocking heat conduction to the mounting region
Data Source
AI summary
A system and method are proposed for estimating the body temperature of a target person in consideration of movements of the target person and changes in the external temperature due to a sudden change in the space temperature when continuously measuring the body temperature. The body temperature estimation system includes a temperature measurement unit, a movement measurement unit, and a body temperature estimation unit. The temperature measurement unit is attached to a skin of the target person and measures a skin temperature and an external temperature. The movement measurement unit measures movements of the target person. The body temperature estimation unit estimates the body temperature based on a correlation between the skin temperature and the external temperature, and monitors a change in the external temperature per monitoring time.