Turbulence Barrier for Chemical Sensor Accuracy
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Solution Overview
Problem
Existing methods for measuring chemical concentration in turbulent solution flows, such as rivers or bloodstreams, are inaccurate due to turbulence interference, requiring sample removal for precise measurements, which is not feasible for all chemical types.
Innovation Solution
A measurement device with a barrier that separates a high turbulence area from a low turbulence area, allowing osmotic flow and diffusion, enabling accurate chemical concentration measurements without the need for sample removal, using a chip substrate and circuit board with a sensor gate and reference electrode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a saline meter is stuck directly in a flowing river, then the measurement process is simple and quick, but the measurement accuracy deteriorates due to turbulence causing spikes and dips
Solution Approach 1:
The device segments the measurement system into two distinct zones: a high turbulence zone where the river water flows freely, and a low turbulence zone where the sensor resides. This segmentation allows the sensor to measure concentration accurately in a calm environment while still being exposed to the flowing water through the barrier, thus resolving the contradiction between measurement speed and accuracy.
Solution Approach 2:
The barrier acts as an intermediary element between the turbulent river water and the sensor. It allows water to pass through while filtering out turbulence, creating a transition zone that protects the sensor from direct turbulent exposure. This intermediary structure enables the sensor to maintain both accessibility to the flow and measurement stability.
2Measurement precision
If water is removed from the river using a pump, then accurate concentration measurements can be taken, but the complexity of the system increases and continuous measurement becomes difficult
Solution Approach 1:
The device extracts the sensor from the turbulent environment and places it in a protected low-turbulence zone. This extraction allows the sensor to function independently of the external turbulence, eliminating the need for water removal pumps while maintaining measurement accuracy. The sensor effectively measures the river water concentration without requiring the water to be removed from the flow.
3Measurement precision
If a barrier is introduced to reduce turbulence around the sensor, then measurement accuracy improves, but the device complexity increases
Solution Approach 1:
The barrier is implemented as a thin film or shell structure that can be integrated into the device housing. This thin barrier effectively reduces turbulence around the sensor without adding significant structural complexity. The barrier can be made from flexible materials that conform to the device shape, providing turbulence reduction while maintaining a simple overall device structure.
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 significantly reduces turbulence around the sensor, improving measurement accuracy by 4 to 30 times, allowing for precise concentration determination of chemicals in turbulent solutions.
Implementation Method 1
allowing osmotic flow and diffusion
Implementation Method 2
allowing osmotic flow and diffusion
Data Source
AI summary
A meter is adapted for measuring concentrations of a chemical in a flowing solution. The meter has a barrier that shields a sensor from the high turbulence of the solution flow. One or more membranes can be employed to selectively filter out various ions or other chemicals.