Fluid Composition Sensor Using Particle Impaction Depth Analysis
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Solution Overview
Problem
Existing fluid sensor devices provide limited functionality in accurately estimating particulate matter mass concentration and characterizing particle characteristics in fluid flows, such as air, which hinders precise monitoring and analysis.
Innovation Solution
A device comprising a fluid composition sensor with a collection media and an imaging device that captures particle images, determining particle impaction depth and mass concentration using a particle impaction depth-momentum look-up table, and applying compensation factors for temperature and humidity, enabling accurate estimation of particulate matter mass concentration and characterization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing fluid sensor devices are used to monitor particulate matter, then basic fluid monitoring is possible, but measurement precision and functionality for accurate mass concentration estimation are limited
Solution Approach 1:
The device segments the particle analysis process into distinct functional modules: particle collection (collection media), imaging capture (imaging device), depth measurement (controller with image focusing techniques), and mass calculation (controller with look-up tables). This segmentation allows each component to be optimized independently while working together to achieve high measurement precision for particulate matter mass concentration.
Solution Approach 2:
The patent introduces a collection media as an intermediary substance between the fluid flow and the imaging device. This collection media captures particles from the fluid stream, allowing the imaging device to analyze particle characteristics without directly interacting with the flowing fluid. The collection media serves as a mediator that enables accurate particle mass concentration estimation while maintaining system manageability.
2Measurement precision
If particle mass concentration is estimated using collection media and imaging, then measurement precision improves, but device complexity increases due to multiple components
Solution Approach 1:
The controller is designed with multi-functionality, performing several tasks: capturing images via the imaging device, determining particle impaction depth using image focusing techniques, calculating particle mass using look-up tables, and estimating overall particulate matter mass concentration. By consolidating these functions into a single controller, the patent reduces device complexity while maintaining high measurement precision.
Solution Approach 2:
The system uses the collection media to passively capture particles from the fluid flow without requiring active manipulation or complex sample preparation mechanisms. The imaging device captures particles in their natural state within the collection media, and the controller automatically processes the images to determine mass concentration, eliminating the need for additional manual intervention or complex auxiliary systems.
3Measurement precision
If multiple particles are collected and analyzed to improve accuracy, then measurement precision increases, but loss of time increases due to extensive analysis
Solution Approach 1:
The collection media continuously captures particles from the fluid flow in advance, creating a reservoir of particles ready for analysis. The imaging device can then rapidly analyze multiple particles without requiring real-time collection during measurement, as the particles are already positioned and prepared in the collection media. This preliminary action reduces analysis time while maintaining high measurement precision through multi-particle evaluation.
Solution Approach 2:
The patent replaces manual or mechanical particle counting and measurement processes with automated optical imaging and computational analysis. The imaging device captures particle images, and the controller automatically determines impaction depth using image focusing techniques and calculates mass concentration using stored look-up tables. This substitution of mechanical measurement with optical and computational methods significantly reduces analysis time while improving measurement precision through automated multi-particle evaluation.
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 device achieves high-accuracy particulate matter mass concentration estimations and enhanced characterization of particle composition, reducing approximation errors and improving monitoring capabilities over time.
Implementation Method 1
a collection media configured to receive one or more particles of a plurality of particles
Implementation Method 2
an imaging device configured to capture an image of one or more particles of the plurality of particles received by the collection media
Data Source
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AI summary
A device and a method for detecting fluid particle characteristics. The device comprises a fluid composition sensor configured to receive a volume of fluid and a controller. The fluid composition sensor comprises a collection media configured to receive one or more particles of a plurality of particles within the fluid; and an imaging device configured to capture an image of one or more particles of the plurality of particles received by the collection media. The controller is configured to determine a particle impaction depth of each of the one or more particles of the plurality of particles within the collection media; and, based at least in part on the particle impaction depth of each of the one or more particles of the plurality of particles, determine a particulate matter mass concentration within the volume of fluid.