Microcalorimetry Flow Sensing with Fluid-Property Sensitivity Tuning
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Solution Overview
Problem
Existing fluid flow sensing apparatuses are limited by their dependence on physical dimensions of components for sensitivity adjustment, leading to mechanical variations and restricted flow range, especially when measuring different gases.
Innovation Solution
A fluid flow sensing apparatus with a microcalorimetry sensor and a controlling means that allows direct adjustment of sensor sensitivity based on fluid properties, independent of mechanical dimensions, enabling a more compact and adaptable design for various gases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensitivity adjustment depends on physical dimensions of components (laminator size), then mechanical variations affect measurement precision, but device complexity is reduced
Solution Approach 1:
The patent replaces the mechanical sensitivity adjustment method (changing laminator physical dimensions) with an electronic control system that adjusts sensor sensitivity through control signals. The controlling means receives fluid property inputs and generates appropriate control signals to set sensor sensitivity, eliminating the need for mechanical dimension changes while improving measurement precision across different fluid types.
Solution Approach 2:
The patent changes the sensitivity parameter of the sensor electronically based on fluid properties rather than physically changing component dimensions. The controlling means adjusts the sensor's operating parameters (such as excitation current or measurement range) according to the detected fluid properties, allowing dynamic sensitivity adaptation without mechanical modifications.
2Adaptability or versatility
If sensor sensitivity is fixed by component dimensions, then device structure is simple, but adaptability to different gases is limited
Solution Approach 1:
The patent creates a universal sensor system that can measure different gas types by incorporating a controlling means that receives fluid property inputs and adjusts sensor sensitivity accordingly. The same physical sensor can adapt to various gases (different molecular weights, thermal conductivities) through electronic control, making the device multi-functional without requiring separate sensors for each gas type.
Solution Approach 2:
The patent replaces the need for multiple physically different sensors (mechanical adaptation) with a single sensor that can be electronically reconfigured for different gases. The controlling means substitutes mechanical component changes with electronic parameter adjustments, enabling the same device to measure different gas types effectively.
3Productivity
If sensitivity is adjusted through mechanical variations of laminator, then device is easier to manufacture, but flow range is restricted
Solution Approach 1:
The patent introduces dynamic sensitivity adjustment through the controlling means, allowing the sensor to adapt its sensitivity in real-time based on fluid properties and flow conditions. This dynamic control enables the sensor to maintain accuracy across a wider flow range without requiring multiple physically different sensor configurations, thereby expanding productivity while keeping the manufacturing process relatively simple.
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 solution enhances sensor accuracy across a wider range of applications, allows for a more compact device with improved flow range, and simplifies adaptation for different gases without the need for complex circuitry.
Implementation Method 1
a microcalorimetry sensor disposed in the fluid flow channel
Implementation Method 2
a microcalorimetry sensor disposed in the fluid flow channel
Data Source
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AI summary
This disclosure relates to an improved fluid flow sensing apparatus and a method of operating the apparatus. In particular, it relates to a fluid flow sensing apparatus having a compact design with a microcalorimetry sensor disposed in a fluid flow channel of the apparatus and a controlling means configured to provide a sensor input to the microcalorimetry sensor to set the sensitivity of the microcalorimetry sensor based on a control input corresponding to a property of the fluid.