Multi-Wavelength Ozone Sensor for Low-Concentration Drift Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ozone concentration measurement systems in ozonated water are inaccurate, particularly for low concentrations, prone to errors, and suffer from wavelength drift, making precise measurement challenging.
Innovation Solution
A multi-wavelength ozone concentration sensor utilizing multiple optical paths through a conduit with different wavelength bands, including UV and visible light, to measure ozone concentration accurately by comparing signals from different paths and paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple bands of visible light traveling along the same optical path are used to determine ozone concentration, then the device complexity is reduced, but the measurement precision deteriorates for low ozone concentrations
Solution Approach 1:
The optical path is segmented into multiple separate paths, with each path dedicated to a specific wavelength band (UV, blue, green, red). This segmentation allows independent optimization of each wavelength band's measurement capability, improving overall measurement precision without requiring complex multi-wavelength detection along a single path
Solution Approach 2:
The patent transitions from a one-dimensional single optical path to a multi-dimensional architecture with four separate optical paths. This dimensional expansion enables simultaneous measurement across different wavelength bands while maintaining simple detection at each path, resolving the contradiction between device complexity and measurement precision
2Measurement precision
If UV light source is used for measurement, then the measurement precision for low ozone concentrations is improved, but the reliability deteriorates due to wavelength drift over time
Solution Approach 1:
The system incorporates feedback through comparison of absorption measurements across multiple wavelength bands. The UV band measurement (high precision for low concentrations) is cross-validated against measurements from blue, green, and red bands, allowing the system to detect and compensate for UV wavelength drift over time, thereby maintaining both precision and reliability
Solution Approach 2:
The patent changes the measurement parameters by utilizing multiple wavelength bands simultaneously. By monitoring absorption at UV, blue, green, and red wavelengths, the system can detect shifts in UV wavelength characteristics and adjust measurements accordingly, maintaining reliability while preserving the high precision benefits of UV measurement
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
The sensor provides accurate and reliable ozone concentration measurements across a wide range, correcting for wavelength drift and enhancing measurement precision.
Implementation Method 1
at least one UV light source configured to direct at least one UV optical signal having a second wavelength band through the ozonated fluid
Implementation Method 2
at least one light source configured to direct at least one optical signal having a first wavelength band through an ozonated fluid within the conduit
Implementation Method 3
the optical signal and the UV optical signal traverse through the conduit along different optical paths via at least one reflection from the coating applied to the conduit
Data Source
AI summary
The present application discloses an apparatus for measuring the concentration of ozone within a fluid and includes a conduit defining at least one passage therein, the conduit has at least one reflective coating selective applied thereto and defining one or more transmission regions on the conduit, a multi-wavelength light source system having at least one light source configured to direct at least one optical signal having a first wavelength through an ozonated fluid within the conduit and at least one UV light source configured to direct at least one UV optical signal having a second wavelength band through the ozonated fluid wherein the optical signal and the UV optical signal traverse through the conduit along different optical paths via at least one reflection from the reflective coating applied to the conduit, and at least one detector positioned proximate to the transmission regions formed on the conduit and configured to detect the optical signal and the UV signal thereby permitting measurement of the concentration of ozone within an ozonated fluid.