Optical Dissolved Oxygen Measurement via Luminescence
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Solution Overview
Problem
Existing methods for measuring dissolved oxygen in organic liquids often require direct contact with the liquid, which can lead to contamination and damage, or require adding chemicals that adversely affect the liquid's properties.
Innovation Solution
A method and apparatus that induce luminescence of dissolved oxygen in a liquid using optical radiation at a wavelength conforming to the oxygen's absorption band, allowing for the analysis of detected luminescent light to determine oxygen concentrations without direct contact or chemical addition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If direct contact methods (probes, membranes) are used to measure dissolved oxygen, then measurement capability is achieved, but contamination of the liquid and damage to components occur
Solution Approach 1:
The patent introduces optical radiation as an intermediary to transfer energy to dissolved oxygen molecules, enabling measurement without physical contact. The optical system acts as a mediator that conveys measurement information through light interaction, eliminating the need for direct contact between measurement components and the liquid, thus preventing contamination and component damage
Solution Approach 2:
The patent replaces mechanical contact-based measurement systems (probes, membranes) with an optical measurement system. By substituting mechanical interaction with optical radiation interaction, the system achieves dissolved oxygen measurement without physical contact, thereby eliminating contamination and mechanical damage to both the liquid and measurement components
2Measurement precision
If chemicals are added to the liquid for measurement, then measurement capability is achieved, but the liquid's properties are adversely impacted
Solution Approach 1:
The patent uses optical radiation as an intermediary to excite dissolved oxygen molecules, producing luminescence that can be detected to determine oxygen concentration. This approach eliminates the need to add chemicals to the liquid, as the optical system interacts directly with the dissolved oxygen without altering the liquid's chemical composition or properties
Solution Approach 2:
The patent substitutes chemical addition methods with optical measurement methods. By using optical radiation to induce luminescence in dissolved oxygen, the system achieves measurement without introducing chemicals that would adversely impact the liquid's properties, maintaining the liquid's chemical stability and composition
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
Enables non-invasive and accurate measurement of dissolved oxygen levels in organic liquids, preventing contamination and maintaining the integrity of the liquid's properties.
Implementation Method 1
inducing luminescence of dissolved oxygen in a liquid using optical radiation at a wavelength conforming to the oxygen's absorption band
Implementation Method 2
optical radiation at a wavelength that conforms to a dissolved oxygen absorption band
Implementation Method 3
a photodetector that is located outside of the container but that is in optical communication with the interior of the container
Data Source
AI summary
Methods and apparatus for analyzing optical measurements to determine whether a liquid includes dissolved oxygen, to determine a predicted concentration of the dissolved oxygen in the liquid, and/or to determine additional or alternative feature(s) related to dissolved oxygen in the liquid. An optical source can be controlled to emit optical radiation into a container that contains the liquid. The optical source can be located outside of the container, and the optical radiation includes (e.g., is restricted to) radiation that conforms to a dissolved oxygen absorption band. The optical radiation can be pulsed or can be periodically intensity modulated. A photodetector, located outside of the container but in optical communication with the interior of the container, can generate the optical measurements used in the analysis.