Dual-Region Transit Time Sensor for Emulsion Separation
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Solution Overview
Problem
Current fill-level sensors using transit time methods face challenges in accurately measuring the position of a separating layer between two liquids, especially when the liquids are not agitated, leading to inaccurate or impossible measurements due to the absence or incorrect position of the separating layer, and require additional methods or complex setups for emulsion measurement.
Innovation Solution
A measuring device and method that utilize a transit time approach with a container divided into sub-regions, acquiring echo curves to determine the fill level and separating layer position without capacitive measurements, using guided microwave or radar waves, and calculating the density ratio of liquids to determine the virtual separating layer position, allowing for accurate measurement of mixtures and emulsions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional fill-level sensor is used to measure the position of a separating layer between two liquids, then the measurement can be performed, but the measurement precision deteriorates when the liquids are not agitated because the separating layer may be absent or incorrectly positioned
Solution Approach 1:
The container is divided into a first sub-region (standpipe) and a second sub-region (bypass pipe), each with its own measuring apparatus. This segmentation allows independent measurement of different liquid levels and properties, enabling accurate determination of separating layer position even when the liquids are not agitated, as each region can be optimized for specific measurement conditions.
Solution Approach 2:
The patent introduces an evaluation unit that acts as an intermediary between the measuring apparatuses and the final measurement results. This evaluation unit processes the echo curves from both sub-regions, compares them, and calculates the separating layer position, thereby improving measurement precision through sophisticated data processing and comparison of multiple measurement points.
2Measurement precision
If additional measuring methods or complex setups are used to improve measurement accuracy for emulsions, then measurement precision improves, but device complexity increases
Solution Approach 1:
The measuring device is designed with universal applicability through its dual sub-region structure that can measure both separating layers in non-agitated liquids and emulsion characteristics. The same basic transit time measurement principle is applied in both regions, with the evaluation unit processing both types of data, thereby achieving multi-functionality without requiring entirely separate measurement systems.
Solution Approach 2:
The patent utilizes changes in wave propagation parameters (echo curve characteristics) to distinguish between different liquid states and compositions. By analyzing variations in echo patterns from the two sub-regions, the system can determine separating layer positions and emulsion properties without requiring fundamentally different measurement methods, thus maintaining device simplicity while achieving broad measurement capability.
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 accurate determination of fill levels and separating layer positions in containers with non-agitated liquids and emulsions, improving measurement precision and reducing the need for additional sensors or complex setups, while adapting to changing media characteristics.
Implementation Method 1
In the use of acoustic or optical waves the signal generated by the fill-level measuring device generally speaking propagates freely in the direction of the feed material surface to be measured. On the surface of the medium to be measured, some of the incoming signals are reflected
Implementation Method 2
Fill-level sensors operating according to a transit time method may, for example, comprise sensors which determine the distance to a feed material surface with the use of ultrasound, radar
Implementation Method 3
In the case of devices according to the principle of the guided microwave the high-frequency signals are guided along a waveguide towards the medium
Data Source
AI summary
A measuring device is for determining a separating layer or a mixing ratio in a container. The measuring device comprises two fill-level measuring apparatuses that acquire the echo curves in a standpipe and outside the standpipe, respectively. Solely from these two echo curves the position of a virtual boundary layer or the mixing ratio of the two different liquids can be determined.