Microfluidic Fluid Sensing System for Real-Time Process Monitoring

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Solution Overview

Problem

Conventional methods for monitoring fluid properties in fluidic processes, such as electroplating, are inefficient and costly, leading to infrequent monitoring and potential deviations from designated operating ranges, resulting in non-conforming products and increased material costs due to labor-intensive laboratory tests and significant fluid sample extraction.

Innovation Solution

A fluid sensing system comprising a microfluidic chip with integrated sensors (pH, infrared, ultraviolet, and electrochemistry sensors) and a wireless communication device for continuous, real-time monitoring of fluid properties, allowing for remote data transmission and reducing the need for large fluid samples.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional laboratory testing methods are used to monitor fluid properties, then measurement accuracy is maintained, but monitoring frequency decreases and time lag increases

Engineering Contradiction:

Improvefluid property measurement accuracyVSAvoidmonitoring frequency

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The patent extracts only the essential monitoring function from the complex laboratory testing process by implementing inline sensors that directly measure fluid properties (pH, temperature, conductivity, oxidation-reduction potential) at the point of use, eliminating the need to extract large fluid samples for laboratory analysis and enabling continuous real-time monitoring

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces manual laboratory testing procedures with automated electronic sensing systems that continuously measure fluid properties in-line, substituting the mechanical process of sample collection, transport, and manual analysis with electronic sensors and automated data processing

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If large fluid samples are extracted for laboratory testing, then comprehensive analysis is possible, but fluid bath volume decreases and material costs increase

Engineering Contradiction:

Improvefluid analysis capabilityVSAvoidfluid bath volume

Core Design Contradiction:

Measurement precisionVSLoss of substance

Solution Approach 1:

The patent extracts only minimal fluid samples (less than 1 mL) through the microfluidic chip for analysis, compared to the large volumes required by conventional laboratory methods, thereby minimizing fluid bath volume loss and reducing the need for frequent replenishment

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the scale of sample extraction from large volumes required by conventional methods to micro-volumes suitable for integrated sensor analysis, enabling comprehensive fluid property monitoring with minimal impact on the overall fluid bath volume

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If manual laboratory testing procedures are used, then detailed fluid property analysis is achieved, but labor costs and operational complexity increase

Engineering Contradiction:

Improvefluid property analysis detailVSAvoidtesting procedure complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges multiple fluid property measurement functions (pH, temperature, conductivity, oxidation-reduction potential) into a single integrated sensing system with a unified microfluidic platform, eliminating the need for separate laboratory testing procedures and reducing operational complexity

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements a universal sensing platform that can simultaneously measure multiple fluid properties using a single system configuration, allowing the same device to perform comprehensive analysis of different fluid parameters without requiring separate specialized equipment or procedures

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enables cost-effective, continuous, and accurate monitoring of fluid properties, reducing the risk of human error and minimizing interference with the fluid bath, while allowing for timely corrective actions and improved process control.