Gas Sensor Data Correction Using Motion Detection

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Solution Overview

Problem

Gas sensors mounted on mobile electronic devices experience measurement errors due to air flow caused by user movement, leading to inaccurate air quality readings.

Innovation Solution

An electronic device equipped with both a gas sensor and a motion sensor, which uses the motion sensor data to identify movements and correct the gas sensor readings when specific conditions are met, ensuring accurate air quality measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a gas sensor is mounted on a mobile electronic device to monitor ambient air quality, then the device can provide air quality monitoring functionality, but measurement errors occur due to air flow caused by user movement

Engineering Contradiction:

Improveair quality monitoring functionalityVSAvoidsensor measurement accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent introduces a motion sensor as an intermediary device to detect user movement and generates correction values based on movement intensity. This intermediary mechanism allows the system to compensate for the harmful effect of air flow on gas sensor measurements without requiring the gas sensor itself to be immune to movement, thus resolving the contradiction between mobile adaptability and measurement precision

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the parameter of sensor readings by applying correction values derived from motion sensor data. When movement is detected, the system adjusts the gas sensor output by adding or subtracting correction values based on movement intensity, thereby transforming inaccurate measurements into accurate air quality readings while maintaining mobile device functionality

Inventive Principle:

Principle #35Parameter changes

2Productivity

If the gas sensor continuously monitors air quality, then accurate real-time data is obtained, but measurement errors occur during device movement intervals

Engineering Contradiction:

Improvereal-time monitoring capabilityVSAvoiddata accuracy during movement

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where motion sensor data continuously feeds back to the gas sensor processing system. The processor constantly monitors movement intensity through the motion sensor and dynamically adjusts gas sensor readings in real-time, creating a closed-loop system that maintains data reliability during movement while preserving continuous monitoring capability

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs preliminary detection of movement through the motion sensor before the movement significantly affects gas sensor readings. By detecting movement intent or onset through acceleration and motion patterns, the system can pre-apply correction values or flag data for correction, ensuring reliability is maintained proactively rather than reactively

Inventive Principle:

Principle #10Preliminary action

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

Prevents measurement errors caused by device movement, providing users with accurate air quality information by correcting sensor data during intervals of significant movement.

Implementation Method 1

Gas sensors refer to elements which sense a specific chemical material contained in a gas, convert the concentration thereof into an electric signal

Methodology Applied

Scientific EffectGas sensing: Adsorption

Implementation Method 2

identifying a movement of the electronic device by using the motion sensor

Methodology Applied

Scientific EffectMotion detection: Accelerometer

Data Source

PatentUS11549927B2Method and electronic device for correcting and generating data related to outside air on basis of movement

Publication Date: 2023.01.10 SAMSUNG ELECTRONICS CO LTD

AI summary

According to various embodiments of the disclosure, an electronic device comprising a gas sensor, a motion sensor, a processor, wherein the processor is configured to acquire data related to air outside the electronic device by using the gas sensor, identify a movement of the electronic device by using the motion sensor while acquiring the data, correct, in case that the movement of the electronic device satisfies a designated condition, at least partial data in an interval in which a movement satisfying the designated condition continues, among the data; and produce information related to quality of the air, at least based on the data, the at least partial data of which has been corrected.Other embodiments may possible.