Interface Sensor Acoustic Frequency Analysis for Sedimentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing interface sensors require manual input of parameters like 'tank depth' and 'immersion depth' for accurate operation, making them labor-intensive and unsuitable for applications with varying liquid levels, such as sequencing batch reactors.
Innovation Solution
An interface sensor method using a sound emitter and detector emitting acoustic signals of different frequencies to calculate the sediment thickness and water level, eliminating the need for manual parameter input and enabling continuous fill level measurement, even with fluctuating immersion depths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual parameter determination and input by user is used, then the sensor can determine distance between sensor and interface, but it requires great deal of work and is not simple for user to determine parameters exactly
Solution Approach 1:
The sensor performs self-calibration by automatically determining the container floor distance through acoustic signal emission and reflection detection. The control unit calculates the distance based on signal travel time, eliminating the need for manual parameter input by the user and enabling automatic adaptation to different installation positions and varying liquid levels.
2Reliability
If manual parameter input is required, then the sensor can operate with fixed parameters, but it is suitable only for applications in which the fill level of the liquid does not vary
Solution Approach 1:
The sensor system dynamically adapts to changing conditions by continuously monitoring the acoustic signal reflections and automatically adjusting measurements based on the current container floor distance and liquid level. This dynamic operation allows reliable performance in applications with varying fill levels, such as sequencing batch reactors, while maintaining measurement accuracy through real-time parameter updates.
3Measurement precision
If the sensor calculates height or depth based on manually input parameters, then it can provide interface detection, but it requires user involvement and cannot handle fluctuating immersion depths
Solution Approach 1:
The control unit automatically determines the container floor distance by analyzing the acoustic signal reflection from the container floor. This self-service capability eliminates the need for user involvement in parameter determination, simplifies installation and operation, and enables the sensor to automatically adapt to different installation positions and varying liquid levels while maintaining accurate interface detection.
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 and automatic calculation of fill levels, allowing for the calculation of inflow and outflow quantities and enabling the sensor's use in automatic control systems for sedimentation plants.
Implementation Method 1
These acoustic signals propagate in the liquid and are reflected back to the sensor upon impinging upon an interface in the liquid or in the container
Implementation Method 2
These acoustic signals propagate in the liquid and are reflected back to the sensor upon impinging upon an interface
Implementation Method 3
first determination of a container floor distance between the interface sensor and a container floor on the basis of the first signal response and a second determination of a container floor distance
Data Source
AI summary
The present disclosure includes an interface sensor for a sedimentation plant, the interface sensor including: a sound emitter configured for generating at least one first acoustic signal with a first frequency and for generating a second acoustic signal with a second frequency different from the first frequency; a sound detector configured for detecting at least one first signal response of the first acoustic signal and a second signal response of the second acoustic signal; and a control unit, wherein the control unit is connected to the sound emitter and the sound detector and is configured to evaluate the first signal response and the second signal response, to determine a floor distance, a sediment distance, a sediment thickness and a water level distance based on the first signal response and the second signal response, and to determine a water level based on the floor distance and the water level distance.