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Parameterizing V-notch Weir Equations for Flow Monitoring in a Drainage Control Structure
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Low-Cost Device for Measuring Wastewater Flow Rate in Open Channels
Daria Wotzka1, Dariusz Zmarzły1
1Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, 45-758 Opole, Poland.
Sensors (Basel, Switzerland)
|October 26, 2024
Summary
A new low-cost device accurately measures wastewater flow rates in open channels using ultrasonic technology. This innovation offers reliable data for sanitary network simulation models.
Area of Science:
- Environmental Engineering
- Instrumentation and Measurement
- Acoustics
Background:
- Accurate wastewater flow measurement is crucial for managing sanitary networks and developing simulation models.
- Existing flow measurement methods can be costly or unsuitable for open channel applications.
- Advancements in microcomputer technology enable the development of more sophisticated and affordable measurement devices.
Purpose of the Study:
- To develop and validate a low-cost device for measuring wastewater flow rates in open channels.
- To utilize ultrasonic signals for both velocity and level measurements in contaminated fluids.
- To ensure the device's accuracy, reliability, and energy efficiency within hardware constraints.
Main Methods:
- Development of a device employing ultrasonic signals for fluid velocity measurement via cross-correlation analysis.
- Implementation of an ultrasonic-based procedure for fluid level measurement.
- Laboratory validation against a standard flow measurement method, optimizing parameters for linearity and efficiency.
- Assessment of device reliability through repeatability and uncertainty measurements.
Main Results:
- Achieved a linear relationship between detected and set flow rates, optimizing for hardware limitations and energy efficiency.
- Demonstrated accurate wastewater flow rate measurement with an extended uncertainty not exceeding 3.47% for flows above 40 L/min.
- Successfully employed ultrasonic cross-correlation for velocity measurement in a stochastic, contaminated fluid environment.
Conclusions:
- The developed low-cost ultrasonic device provides accurate and reliable wastewater flow rate measurements in open channels.
- The device's performance is suitable for providing essential data for sanitary network operational dynamics and model calibration.
- This technology represents a significant advancement in cost-effective wastewater monitoring solutions.
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