Fluid Sensing Device Using Coanda Effect for Angular Flow Measurement
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Solution Overview
Problem
Existing fluid flow measurement systems face challenges in accurately measuring fluid flow velocity and other parameters at high/low velocities and indirect angular flows, particularly in dynamic environments like aircraft or marine craft, due to limitations in sensor accuracy and the need for multiple sensors, which increases complexity and cost.
Innovation Solution
A fluid sensing device with an outer body and an inner body configured to induce the Coanda effect, featuring a fluid inlet, vents, and load sensors to measure drag force, allowing for accurate measurement of fluid flow velocity and parameters at high/low velocities and angularities, while integrating multiple sensors for simultaneous and localized data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are used to measure fluid flow parameters at different locations, then measurement coverage and accuracy in dynamic environments improve, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple sensing functions into a single integrated probe that can simultaneously measure total pressure, static pressure, and flow direction using a unified sensor array structure, eliminating the need for multiple separate sensors positioned at different locations
Solution Approach 2:
The probe design incorporates multiple pressure sensors within a single device that can simultaneously perform multiple measurement functions (total pressure, static pressure, differential pressure) and compensate for angular flow errors, making one device serve multiple purposes
2Reliability
If multiple sensors are deployed to compensate for angular flow errors, then measurement reliability in maneuvering conditions improves, but system cost and complexity increase
Solution Approach 1:
The patent employs feedback mechanisms where the differential pressure readings from multiple sensors within the probe are continuously processed to calculate and compensate for angular flow errors, allowing the system to self-correct and maintain reliability during dynamic maneuvering without requiring external complex systems
Solution Approach 2:
The probe divides the sensing function into multiple pressure measurement points within a single structure, with each sensor segment contributing to the overall compensation calculation for angular errors, allowing complex measurements to be achieved through coordinated simple elements
3Device complexity
If a single sensor measures multiple fluid parameters, then device complexity reduces, but measurement precision and accuracy deteriorate
Solution Approach 1:
The patent merges multiple pressure sensing elements into a single integrated probe assembly where total pressure, static pressure, and differential pressure sensors are co-located and structurally integrated, enabling simultaneous multi-parameter measurement from one device while maintaining precision through proper sensor positioning and calibration
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 provides accurate and simultaneous measurements of total temperature and total pressure, enabling precise determination of fluid parameters, reducing measurement errors, and eliminating the need for multiple sensors, thus enhancing operational reliability and reducing complexity and cost.
Implementation Method 1
the inner body is configured to induce the Coanda effect in at least a portion of a fluid contacting the inner body at an angle transverse to a longitudinal axis of the inner body
Data Source
AI summary
A fluid sensing device includes an outer body having a fore side, an aft side, and an interior space, the outer body including a fluid inlet disposed at the fore side; an inner body extending at least partially out of the fluid inlet of the outer body along a longitudinal axis; one or more vents disposed aft of the fluid inlet to allow passage of fluid through the fluid sensing device; and at least one load sensor coupled to the inner body to measure a fluid drag force on the inner body, wherein the inner body is configured to induce the Coanda effect in at least a portion of a fluid contacting the inner body at an angle transverse to a longitudinal axis of the inner body.