Sealed-Housing Wearable Sensor for Sweat-Resistant Monitoring

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Solution Overview

Problem

Conventional environmental and biological sensors are cumbersome and inaccurate due to sweat adhesion, making it difficult to continuously monitor ambient environmental information, biological information, and kinetic conditions for effective physical condition management.

Innovation Solution

A wearable sensor device with a sealed housing containing biological information and inertial sensors, a separate environmental sensor, and exposed conductive portions for bioelectrode connection, ensuring sweat-resistant and continuous measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional environmental sensors are carried or worn, then ambient environmental information can be monitored, but measurement accuracy deteriorates when sweat adheres to the sensor

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidsweat adhesion

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The device is divided into separate functional modules: environmental sensors are positioned on the outer surface exposed to ambient air, while biological sensors are isolated in a sealed housing with sweat-resistant barriers. This segmentation prevents sweat from affecting environmental measurements while maintaining biological monitoring capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A sealed housing acts as an intermediary barrier between the biological sensors and sweat, preventing direct contact. The housing allows electrical connection through conductive portions while maintaining physical isolation from harmful sweat adhesion.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple separate sensors (environmental sensor and wearable sensor) are used to monitor environmental information, biological information, and kinetic condition, then comprehensive monitoring is achieved, but device complexity and ease of operation deteriorate due to the need to carry, wear, and charge multiple devices

Engineering Contradiction:

Improvecomprehensive monitoring capabilityVSAvoidnumber of devices

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines environmental sensors, biological sensors, inertial sensors, calculation units, and wireless communication units into a single integrated wearable device. This merging eliminates the need to carry multiple separate devices while maintaining comprehensive monitoring capabilities for environmental, biological, and kinetic data.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single wearable device performs multiple functions: environmental sensing, biological information measurement, kinetic condition monitoring, data calculation, and wireless transmission. This multi-functionality replaces the need for separate specialized devices, simplifying the user experience.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of operation

If a wristband-type wearable sensor is used to monitor biological information and kinetic condition, then biological and kinetic monitoring is achieved, but ease of operation deteriorates due to the need to separately carry and charge an environmental sensor

Engineering Contradiction:

Improveconvenience of wearingVSAvoidenvironmental monitoring capability

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

Environmental sensing capabilities are integrated directly into the wearable device housing, combining what were previously separate wristband-type biological sensors and standalone environmental sensors into a single unified device that requires only one charging cycle.

Inventive Principle:

Principle #5Merging (Combining)

4Measurement precision

If conventional heat index meters are used to prevent heat stroke, then heat index measurement is achieved, but ease of operation deteriorates because the devices are relatively large and difficult to place in any given location

Engineering Contradiction:

Improveheat index measurementVSAvoidportability

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The environmental sensing function is segmented into a compact, wearable form factor that can be positioned close to the human body. This allows the device to measure local microenvironmental conditions (temperature, humidity) relevant to the individual's actual thermal environment, replacing large stationary heat index meters.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12458287B2Wearable sensor device

Publication Date: 2025.11.04 NT T INC

AI summary

A wearable sensor device includes a temperature and humidity sensor that measures ambient environmental information around a living body, a snap button connected to a bioelectrode, a biological information measurement unit that measures biological information, an inertial sensor that measures inertial information, a calculation unit that calculates a biological feature amount based on the biological information and calculates an inertial feature amount based on the inertial information, and a wireless communication unit that transmits the biological information, the inertial information, the biological feature amount, the inertial feature amount, and the environmental information to the outside.