Wearable Skin Temperature Sensor Ambient Compensation
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Solution Overview
Problem
Accurate and continuous monitoring of body temperature is challenging due to ambient influences and individual temperature variations, making it difficult to detect deviations that may indicate physiological changes.
Innovation Solution
A system and method using a wearable device with a first temperature sensor attached to the skin and a second ambient temperature sensor, combined with an accelerometer, to adjust and filter skin temperature measurements, calculate representative temperature information, and display it for continuous monitoring and pattern analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If skin temperature measurements are taken using a wearable sensor, then continuous monitoring is enabled, but ambient temperature influence degrades measurement accuracy
Solution Approach 1:
The patent introduces ambient temperature as an intermediary variable to compensate for environmental effects on skin temperature measurements. By measuring ambient temperature separately and using it to adjust the skin temperature readings, the system eliminates the harmful influence of ambient conditions while maintaining continuous monitoring capability
Solution Approach 2:
The system dynamically adjusts the skin temperature measurements by applying compensation based on ambient temperature parameters. The representative temperature is calculated by modifying the raw skin temperature data using ambient temperature information, thereby changing the parameter representation to remove environmental bias
2Loss of information
If multiple temperature measurements are taken over long periods, then physiological patterns can be identified, but traditional thermometers require manual operation and produce inaccurate results
Solution Approach 1:
The wearable device performs automatic temperature measurements and processing without requiring manual intervention. The system self-monitors skin temperature continuously, automatically adjusts readings using ambient temperature, and generates representative temperature information, eliminating the need for manual thermometer operation while ensuring accurate long-term data collection
3Object-affected harmful factors
If skin temperature is used as a proxy for core body temperature, then non-invasive measurement is achieved, but ambient temperature contamination reduces reliability
Solution Approach 1:
Ambient temperature measurement serves as an intermediary that allows the system to distinguish between genuine core temperature changes and artifacts caused by environmental exposure. This mediator enables the wearable sensor to maintain reliability as a core temperature proxy despite being subject to ambient conditions
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 accurate, continuous, and user-specific body temperature monitoring, reducing ambient influence and identifying typical patterns to detect deviations in physiological conditions.
Implementation Method 1
a first temperature sensor to be thermally coupled to the skin of a user
Implementation Method 2
a second temperature sensor to measure ambient temperature
Data Source
AI summary
The invention is related to a system and method for determining a physiological condition. The system includes a processor configured to receive, from a first sensor, skin temperature measurements during a first period of time, wherein the first sensor is detachably and thermally coupleable to a user's skin, receive from a second sensor, measurements of ambient temperature during the first period of time, adjust the skin temperature measurements received from the first sensor using the ambient temperature measurements received from the second sensor to reduce ambient influence, receive one or more stored temperature measurements measured for at least a second time period, calculate representative temperature information for the first period of time based on the adjust skin temperature measurements from the first period of time and stored temperature measurements and display the representative temperature information.