Body Wearable Analyte Sensor With Infrared Temperature Detection
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Solution Overview
Problem
Existing analyte sensor systems face challenges in accurately determining analyte concentrations due to temperature variations, particularly because contact temperature sensors are complex to design and costly, and can be affected by the temperature of the circuit board, leading to inaccurate skin temperature detection.
Innovation Solution
An analyte sensor system utilizing an infrared (IR) temperature sensor that detects the temperature of the skin or the housing without contact, allowing for more accurate assessment and correction of skin temperature's impact on analyte value calculations, and eliminating the need for complex wiring and placement on the housing side, thus reducing production costs and design complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a contact temperature sensor is used to detect skin temperature, then temperature measurement can be performed, but the design becomes complex and production costs increase
Solution Approach 1:
The patent replaces the mechanical contact temperature sensor system with an infrared temperature sensor that detects temperature remotely through infrared radiation. This eliminates the need for physical contact, complex wiring, and precise placement on the housing side, thereby reducing device complexity while maintaining temperature measurement capability
Solution Approach 2:
The patent introduces an intermediary approach by using infrared radiation as a mediator between the temperature sensor and the skin. The infrared sensor detects thermal radiation emitted by the skin without requiring direct contact, thus simplifying the measurement system while avoiding the complexity of contact sensor integration
2Measurement precision
If a contact temperature sensor is placed on the housing side, then skin temperature can be detected, but the measurement is affected by the circuit board temperature
Solution Approach 1:
The infrared temperature sensor acts as an intermediary that detects skin temperature through infrared radiation without being in thermal contact with the circuit board. This eliminates the harmful thermal interference from the circuit board while maintaining accurate skin temperature measurement capability
Solution Approach 2:
The patent replaces the contact-based thermal measurement system with a non-contact infrared detection system. This substitution eliminates the thermal coupling between the sensor and circuit board, removing the source of temperature interference while preserving the ability to measure skin temperature accurately
3Measurement precision
If contact temperature sensors are used, then temperature detection is possible, but production costs increase
Solution Approach 1:
The patent replaces complex contact temperature sensor assemblies with a simpler infrared temperature sensor that requires no physical contact or complex wiring. This substitution reduces manufacturing complexity, eliminates additional wiring requirements, and lowers production costs while maintaining temperature detection functionality
Solution Approach 2:
The patent extracts the temperature sensing function from the contact sensor system and implements it through infrared detection. This separation removes the need for complex sensor integration, wiring, and assembly processes, thereby reducing production costs while preserving the essential temperature measurement capability
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 IR temperature sensor system provides more accurate analyte value calculations by directly detecting skin temperature without being influenced by its own temperature, allowing for more flexible design and reduced production costs compared to traditional systems.
Implementation Method 1
an infrared (IR) temperature sensor device which is configured to detect the temperature (i) of the lower side of the housing, or (ii) of the skin through a hole comprised by the lower side of the housing, respectively
Data Source
AI summary
An analyte sensor system has a transcutaneous analyte sensor. A housing is provided that has a lower side configured to be attached to the skin of a patient. An infrared (IR) temperature sensor detects the temperature (i) of the lower side of the housing or (ii) of the skin through a hole in the lower side of the housing. The IR temperature sensor faces and is spaced from the lower side of the housing or is spaced from the skin. An electronics unit has a processor that receives analyte sensor signals from the transcutaneous analyte sensor and temperature sensor signals from the IR temperature sensor device. The analyte sensor system may also include a contact temperature sensor in contact with a part of the housing carrying the IR temperature sensor or in contact with the circuit board.