UpA Cell pH Control Without Sensors
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Solution Overview
Problem
Existing unidirectional pH adjustment (UpA) cell technologies rely on expensive and prone-to-failure sensors for pH control, which are complex to maintain and not necessary for all applications, especially for domestic use where accuracy is not critical.
Innovation Solution
A device and method that use model-based computing to calculate and control UpA cell parameters without the need for pH sensors, relying on preset parameters like desired pH value, inlet water pH, and flow dynamics to adjust operating conditions, ensuring cost-effectiveness and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pH sensors or conductivity sensors are employed to control pH in UpA cell, then pH control precision is improved, but device cost increases and device complexity increases
Solution Approach 1:
The patent replaces physical pH sensors and conductivity sensors with a computational model-based system. The control unit calculates pH values by processing electrical signals from electrodes through predetermined algorithms, substituting mechanical sensing components with mathematical computation to achieve pH measurement without traditional sensors.
Solution Approach 2:
The patent creates a virtual copy of the pH measurement function through computational modeling. Instead of directly measuring pH with physical sensors, the system computes pH values by simulating the electrochemical relationships between electrodes and electrolyte, producing equivalent information through calculation rather than direct physical detection.
2Measurement precision
If pH sensors are used for pH control, then pH control precision is improved, but reliability deteriorates due to sensor failure and maintenance complexity
Solution Approach 1:
The patent replaces fragile physical sensors with a robust computational system. By substituting mechanical and chemical sensing components with mathematical algorithms processed by a control unit, the system eliminates sensor drift, calibration requirements, and physical failure modes, significantly improving long-term reliability.
Solution Approach 2:
The computational model continuously self-calibrates by processing real-time electrical signals from the electrodes through predetermined algorithms. The system automatically adjusts to changing conditions without requiring external calibration or maintenance intervention, making the measurement system self-sustaining and highly reliable.
3Measurement precision
If sensors are employed for pH determination, then pH control is achieved, but cost increases and ease of operation deteriorates due to maintenance requirements
Solution Approach 1:
The patent eliminates the need for sensor installation, calibration, and maintenance by replacing physical sensing components with a computational algorithm. The control unit processes electrode signals through predetermined mathematical relationships, removing all operational complexities associated with sensor handling and making the system trivial to operate.
4Device complexity
If model-based computing is used to calculate UpA cell parameters, then device cost decreases and device complexity decreases, but measurement precision may deteriorate
Solution Approach 1:
The patent substitutes physical measurement instruments with a mathematical model that computes pH based on fundamental electrochemical relationships. The control unit uses predetermined algorithms processing electrical signals from electrodes to calculate pH values, achieving accurate measurement through computation rather than physical sensing, thereby simplifying the device while maintaining precision.
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
This approach eliminates the need for sensors, extends the working electrode's lifetime by avoiding extreme pH values, and simplifies maintenance, making the system suitable for domestic use while maintaining accurate pH control.
Implementation Method 1
two electrodes arranged opposite to each other in the vessel, the electrodes being adapted to generate electrical signals in response to contact with the electrolyte solution
Data Source
AI summary
The present invention relates to a device and method for controlling the pH of a UpA cell. The device comprises a receiving unit for receiving a preset parameter including a desired pH value; a computing module configured to calculate an UpA cell parameter based on the preset parameter; and a control module configured to control the UpA cell based on the calculated UpA cell parameter.