Compact Temperature Measurement Device with Heat Flow Compensation
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Solution Overview
Problem
Existing temperature measurement devices for internal body temperature estimation face errors due to changing convection states of outside air, and their bulky design makes them inconvenient for wearable use.
Innovation Solution
A compact temperature measurement device with a heat flow compensation mechanism and integrated circuit board, where the heat flow compensation mechanism has a hollow structure to transport heat flux from the body to the detection unit, reducing estimation errors and device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a cover made of high thermal conductivity material is provided inside the temperature measurement device to compensate for heat flow loss, then measurement precision is improved, but device complexity increases due to the need for separate housings
Solution Approach 1:
The patent merges the first housing (containing the temperature sensing unit) and the second housing (containing the circuit board) into a single integrated housing structure. The circuit board is mounted on the inner wall of the housing, eliminating the need for separate housings and their connecting wiring, thus reducing device complexity while maintaining the heat flow compensation function.
Solution Approach 2:
The patent introduces a heat insulating structure (such as a heat insulating sheet or air gap) as an intermediary between the circuit board and the temperature sensing unit. This intermediary prevents heat from the circuit board from interfering with the temperature measurement while allowing the housing to remain integrated, thus resolving the contradiction between measurement precision and device complexity.
2Measurement precision
If separate housings are used to accommodate the temperature sensing unit and circuit board, then measurement precision is improved by preventing heat interference, but the area of the device increases
Solution Approach 1:
The patent combines the housing for the temperature sensing unit and the housing for the circuit board into a single integrated housing. The circuit board is mounted on the inner wall of the same housing that contains the temperature sensing unit, significantly reducing the device's mounting area while maintaining measurement accuracy through the use of heat insulating structures.
Solution Approach 2:
The patent arranges the circuit board on the inner wall surface of the housing, utilizing the vertical dimension and surface area of the housing rather than requiring additional horizontal space. This dimensional arrangement reduces the overall device footprint while maintaining functional separation through heat insulation.
3Measurement precision
If separate housings with wiring connections are used, then measurement precision is improved, but ease of operation deteriorates due to difficult handling
Solution Approach 1:
The patent integrates the circuit board housing and temperature sensing unit housing into a single unified structure, eliminating the need for wiring connections between separate housings. This integration simplifies the device structure, making it easier to handle and wear as a compact health monitoring device while maintaining measurement precision through internal heat insulation.
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 device accurately measures internal body temperature with reduced estimation errors and a smaller form factor, enhancing convenience and handling.
Implementation Method 1
a heat flow compensation mechanism with a hollow structure that is disposed in a space inside the housing so as to cover the detection unit and is configured to transport a heat flux from the living body outside the detection unit to an upper part of the detection unit
Data Source
AI summary
This temperature measurement device includes a temperature sensing unit serving as a detector for measuring a magnitude of a heat flow transmitted from a living body, a housing having a hollow structure, a heat flow compensation mechanism with a hollow structure that is disposed in a space inside the housing so as to cover the temperature sensing unit and transports a heat flux from the living body outside the temperature sensing unit to an upper part of the temperature sensing unit, and a circuit board mounted on the heat flow compensation mechanism. The circuit board includes a processing electronic circuit for calculating the internal temperature of the living body on the basis of the magnitude of the heat flow measured by the temperature sensing unit.