Diagnostic device, diagnostic system, diagnostic method, and program
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Solution Overview
Problem
Existing water treatment systems inaccurately predict the lifespan of water purification cartridges, leading to continued use beyond the necessary replacement time, which compromises water quality.
Innovation Solution
A diagnostic device and method that utilizes multiple measurement items to calculate individual predicted product lifespans for an electrodeionization water production apparatus, predicting the shortest lifespan for accurate replacement timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple measurement items are used to calculate predicted product lifespan, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the product lifespan prediction into multiple independent measurement dimensions (water flow rate, voltage, current, differential pressure, water quality). Each measurement item independently contributes to the overall prediction, allowing the system to comprehensively assess cartridge condition without requiring a single complex measurement system.
Solution Approach 2:
The diagnostic device integrates multiple measuring instruments that can each serve multiple functions. For example, electrical measurements (voltage, current) can indicate both membrane fouling and element degradation, while differential pressure measurements can indicate both clogging and structural damage. This multi-functionality reduces the need for specialized instruments for each specific failure mode.
2Device complexity
If only water flow rate is used for prediction, then device complexity is reduced, but reliability of replacement timing deteriorates
Solution Approach 1:
The patent divides the replacement timing prediction into multiple independent assessment streams based on different measurement items. Each measurement (water flow rate, voltage, current, differential pressure, water quality) provides a separate prediction of remaining lifespan, and the system synthesizes these into a comprehensive replacement recommendation, ensuring reliable timing even if individual measurements are affected by external factors.
Solution Approach 2:
The system continuously monitors multiple parameters and provides feedback on cartridge condition. By comparing actual measurements against predicted values and trends, the system can detect deviations that indicate approaching end-of-life conditions, allowing for timely and reliable replacement scheduling based on actual cartridge performance rather than fixed schedules.
Data Source
AI summary
A measured value acquisition unit acquires measured values for each of a plurality of measurement items measured by one or more measuring instruments that measure the plurality of measurement items for an electrodeionization water production apparatus, a calculating unit calculates individual predicted product lifespans based on each of the measured values acquired by the measured value acquisition unit, a prediction unit predicts as the predicted product lifespan of the electrodeionization water production apparatus the shortest individual predicted product lifespan among a plurality of individual predicted product lifespans calculated by the calculation unit, and an output unit outputs information according to the predicted product lifespan predicted by the prediction unit.