Wave Sensor Gas Removal and Baseline Correction

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Solution Overview

Problem

Wave sensors face challenges in accurately detecting target materials in liquid samples due to interference from properties of the liquid itself and other materials present, such as gas bubbles, which affect wave signals and complicate the measurement process.

Innovation Solution

A method and apparatus that involve supplying input wave signals to both a standard liquid sample without the target material and a target liquid sample, measuring the output wave signals, and comparing them to determine if a difference exists, with the standard sample's signal serving as a baseline to correct for liquid properties and detect the target material, while also removing gas bubbles to enhance measurement accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If wave signals are used to detect target materials in liquid samples, then detection capability is provided, but measurement accuracy deteriorates due to interference from liquid properties and gas bubbles

Engineering Contradiction:

Improvedetection accuracyVSAvoidinterference from liquid properties and gas bubbles

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent divides the detection process into separate measurement stages: a first measurement is performed on a reference liquid sample without target material, and a second measurement is performed on the target liquid sample. By segmenting the measurement into distinct phases with different sample types, the system can isolate and eliminate the interfering effects of liquid properties and gas bubbles through comparative analysis.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a reference liquid sample as an intermediary medium that contains all the interfering factors (liquid properties, viscosity, density, gas bubbles) except the target material. This intermediary serves as a baseline that mediates the comparison between the reference measurement and the target sample measurement, allowing accurate detection by subtracting the interfering effects.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If gas bubbles are present in the liquid sample, then the sample represents real-world conditions, but wave signal measurement accuracy deteriorates

Engineering Contradiction:

Improverepresentativeness of sampleVSAvoidwave signal measurement accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The patent converts the harmful effect of gas bubbles into a beneficial reference measurement. By intentionally including gas bubbles in the reference liquid sample and measuring their effect on the wave signal, the system captures the interference from gas bubbles as part of the baseline. This allows the gas bubble effect to be subtracted from the target sample measurement, improving accuracy while maintaining sample representativeness.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Adaptability or versatility

If properties of the liquid sample (weight, viscosity, density) are considered, then comprehensive measurement is achieved, but detection accuracy deteriorates due to interference with target material detection

Engineering Contradiction:

Improvecomprehensive measurement capabilityVSAvoidtarget material detection accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent segments the measurement into two distinct parts: a reference measurement that captures all liquid sample properties (weight, viscosity, density) without target material, and a target sample measurement that includes both liquid properties and target material. By separating the measurement of liquid properties from target material detection through sequential measurements, the system can isolate the target material signal.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses the reference measurement as feedback to correct the target sample measurement. The first measurement establishes a baseline that reflects the actual liquid sample properties, and this baseline is used to compensate for and remove the interfering effects from the second measurement, thereby improving target material detection accuracy.

Inventive Principle:

Principle #23Feedback

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

This approach allows for efficient and accurate detection of target materials in liquid samples by isolating the effects of the target material from other factors, improving the precision of wave signal measurements and reducing errors caused by gas bubbles.

Implementation Method 1

a piezoelectric substrate (100) on which a material that binds the target material is immobilized

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Implementation Method 2

sensors that measure acoustic waves including surface acoustic waves

Methodology Applied

Scientific EffectSurface acoustic wave: Surface Acoustic Wave

Implementation Method 3

a change in a resonant frequency of the piezoelectric resonator is proportional to a mass change

Methodology Applied

Scientific EffectResonance: Resonance

Data Source

PatentUS8250908B2Wave sensor apparatus including gas removing unit and method of detecting target material in liquid sample

Publication Date: 2012.08.28 SAMSUNG ELECTRONICS CO LTD

AI summary

Disclosed is a wave sensor apparatus including a unit for removing a gas and a method of detecting a target material in a liquid sample, the method including removing a gas in the liquid sample.