Ion Electrode Concentration Correction via Batch Calibration
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Solution Overview
Problem
Existing concentration measurement methods face challenges in achieving high accuracy due to interference from other components and the difficulty in preparing calibration liquids, leading to increased power consumption and reduced measurement precision, especially when using ion electrode methods in sewage treatment processes.
Innovation Solution
A method that combines successive measurements from an ion electrode device with batch measurements from a different device to calculate a correlation value, allowing for accurate concentration calculations without dedicated apparatuses or skills, using ion chromatography or color reactions for verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration using calibration liquid is performed to secure measurement accuracy, then measurement precision is improved, but preparation difficulty increases when calibration liquid is dangerous or unstable
Solution Approach 1:
The patent introduces an interfering component concentration measurement device as an intermediary tool to correct the target component measurement device. Instead of directly using problematic calibration liquids, the system uses a separate measurement device to quantify interference and applies correction calculations, thereby avoiding direct contact with dangerous or unstable calibration liquids while maintaining measurement accuracy.
Solution Approach 2:
The patent replaces the physical calibration process (mechanical/chemical system involving calibration liquids) with a computational correction system. By measuring interfering component concentrations and applying correction algorithms, the system substitutes the need for physical calibration liquids with an information-processing approach, eliminating preparation difficulties associated with dangerous or unstable liquids.
2Ease of operation
If measurement device uses ion electrode method to avoid reagent, then ease of operation is improved, but measurement precision deteriorates due to interference from other components
Solution Approach 1:
The patent introduces an interfering component concentration measurement device as a mediator that quantifies the interference affecting the ion electrode measurements. By measuring the concentration of interfering components separately and applying correction calculations to the target component measurements, the system maintains the ease of reagent-free operation while compensating for the precision loss caused by interference.
Solution Approach 2:
The patent implements a feedback mechanism where the interfering component measurement device continuously monitors interference levels and feeds this information back to correct the target component measurements. This closed-loop system allows the ion electrode method to maintain both operational simplicity and measurement accuracy by dynamically adjusting for interference based on real-time measurements.
3Measurement precision
If multiple calibration liquids of multiple concentrations are used to match measurement values, then measurement precision is improved, but device complexity and time consumption increase
Solution Approach 1:
The patent uses an interfering component measurement device as an intermediary to achieve measurement correction without requiring multiple calibration liquids at different concentrations. By measuring interference levels and applying correction calculations, the system achieves multi-point calibration accuracy using a single measurement device, thereby reducing device complexity and eliminating the need for dedicated apparatuses and specialized skills.
4Productivity
If calibration frequency is reduced to save time and effort, then productivity is improved, but measurement precision deteriorates
Solution Approach 1:
The patent implements continuous monitoring of interfering component concentrations using the interfering component measurement device. This continuous measurement capability allows the system to maintain measurement accuracy without periodic calibration interruptions, as the interference levels are constantly tracked and corrections are applied in real-time, thereby eliminating the trade-off between calibration frequency and measurement precision.
Solution Approach 2:
The patent establishes a continuous feedback loop where interfering component measurements are continuously fed back to correct target component measurements. This real-time correction mechanism replaces periodic calibration with continuous adjustment, allowing the system to maintain high measurement precision while maximizing productivity by eliminating calibration downtime and reducing operational burden.
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 enables higher accuracy in measuring target component concentrations in sewage water, reducing power consumption and eliminating the need for complex calibration procedures, thereby improving measurement precision and energy efficiency.
Implementation Method 1
one capable of performing successive measurement in a state of being immersed in a reactor without using any reagent, i.e., one using a so-called ion electrode method is suitable
Data Source
AI summary
To measure target component concentration in a liquid with higher accuracy without any dedicated apparatus or skill, a method is adapted to include: receiving a successive measurement value obtained by performing successive measurement of the target component concentration with use of a first measurement device immersed in the liquid; receiving a batch measurement value obtained by, with use of a second measurement device, performing batch measurement of the target component concentration in a part sampled from the liquid; and, when the batch measurement value is received, successively calculating a correlation value indicating the correlation between multiple successive measurement values and multiple batch measurement values respectively obtained in mutually corresponding multiple times of successive measurement and multiple times of batch measurement. In addition, the first measurement device is adapted to calculate the target component concentration or correct a successive measurement value with use of the latest correlation value.