Infrared Thermometer Shielding Hood for Wrist Measurement Precision

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional thermometers face challenges in accurately measuring body surface temperature due to environmental influences and incomplete contact, leading to reduced precision, especially when used at the wrist where they are easily affected by surroundings.

Innovation Solution

A body surface thermometer equipped with an infrared temperature sensor and a shielding protective hood made of quartz glass with UV and visible light transmission proofing layers, allowing non-contact measurements by blocking external infrared and light interference, and a wearable design for enhanced precision.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If non-contact infrared measurement is used at the wrist, then measurement speed and freedom are improved, but measurement precision deteriorates due to ambient temperature interference

Engineering Contradiction:

Improvemeasurement speedVSAvoidtemperature measurement precision

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

An infrared shielding protective hood is introduced as an intermediary component between the infrared temperature sensor and the ambient environment. The hood blocks infrared radiation from surrounding objects while allowing the sensor to detect infrared radiation from the body surface through its opening, thereby isolating the measurement from environmental interference and improving precision without sacrificing measurement speed

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The protective hood is designed with selective transparency - it is made of materials that are transparent to infrared radiation at the measurement wavelength while blocking infrared radiation from other directions. This local quality differentiation allows the hood to permit useful infrared signals from the body while blocking harmful ambient infrared radiation, resolving the precision-speed contradiction

Inventive Principle:

Principle #3Local quality

2Measurement precision

If contact type measurement is used, then measurement precision is improved, but measurement time increases due to equilibrium requirement

Engineering Contradiction:

Improvetemperature measurement precisionVSAvoidmeasurement time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces the mechanical thermal contact system with an optical infrared detection system. Instead of requiring thermal equilibrium through physical contact between sensor and body, the infrared sensor detects temperature by measuring infrared radiation emitted from the body surface, eliminating the need for prolonged contact time while maintaining measurement precision through the shielding hood

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If wrist type thermometer is used, then measurement freedom is improved, but measurement precision deteriorates due to incomplete contact and environmental influence

Engineering Contradiction:

Improvemeasurement freedomVSAvoidtemperature measurement precision

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The infrared shielding protective hood serves as a mediator that enables the wrist thermometer to maintain both freedom and precision. It allows the device to be worn freely at the wrist while blocking environmental infrared interference, thus preserving the ease of operation advantage while eliminating the precision deterioration caused by environmental influence

Inventive Principle:

Principle #24Intermediary (Mediator)

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 enhances measurement precision and speed by blocking ambient infrared and light interference, providing accurate and quick body surface temperature readings with improved freedom of measurement, especially when used at the wrist.

Implementation Method 1

For non-contact type, infrared rays radiated from the body surface are detected and converted into the body temperature

Methodology Applied

Scientific EffectInfrared radiation: Infrared Radiation

Implementation Method 2

the shielding protective hood is an infrared ray shielding protective hood

Methodology Applied

Scientific EffectInfrared ray shielding: Absorption (EM radiation)

Data Source

PatentUS10194807B2Body surface thermometer and wearable temperature measuring device

Publication Date: 2019.02.05 BOE TECHNOLOGY GROUP CO LTD

AI summary

A body surface thermometer and a wearable temperature measuring device are disclosed. The body surface thermometer includes an infrared temperature sensor and a shielding protective hood disposed outside the infrared temperature sensor, and the shielding protective hood is an infrared ray shielding protective hood. With the body surface thermometer, the measuring precision of surface temperature of a target object can be promoted, thereby raising the freedom degree of test.