Catadioptric Solution Concentration Sensor with Ditch-Shaped Detection
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Solution Overview
Problem
Conventional methods for measuring solution concentration are costly, time-consuming, and lack optimal measurement precision, with potential safety risks and interference from bubbles and liquid deposits.
Innovation Solution
A device incorporating a catadioptric structure with a housing, electromagnetic radiation emitter, and detector, which uses total internal reflection and refraction to enhance measurement sensitivity by magnifying the deflection angle of electromagnetic radiation, and a detecting part shaped like a ditch to prevent liquid deposits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional analytical methods (combustion analysis, ion chromatography, titration) are used to measure solution concentration, then measurement can be performed, but the methods are costly, time-consuming, and lack optimal measurement precision
Solution Approach 1:
The patent replaces complex mechanical/chemical analytical systems (combustion analysis, ion chromatography, titration) with an optical measurement system using electromagnetic radiation and catadioptric structure. This substitution enables rapid, precise concentration measurements without time-consuming chemical processes, directly resolving the contradiction between measurement precision and time consumption.
Solution Approach 2:
The patent measures solution concentration by detecting changes in refraction index, which is a physical parameter that varies with concentration. By monitoring refraction index changes through optical radiation passing through the solution, the system achieves rapid and precise concentration measurements, overcoming the limitations of conventional methods.
2Measurement precision
If conventional refractometry methods are used, then measurement can be performed, but bubbles and liquid deposits interfere with measurement precision
Solution Approach 1:
The patent uses a catadioptric structure with multiple reflection surfaces arranged in a specific three-dimensional configuration. This spatial arrangement creates multiple optical paths through the solution, allowing the system to measure refraction index while bypassing the interference caused by bubbles and liquid deposits on single measurement surfaces, thereby maintaining high measurement precision.
3Measurement precision
If a simple optical path is used, then device complexity is reduced, but measurement sensitivity is insufficient
Solution Approach 1:
The patent introduces a catadioptric structure as an intermediary optical component between the electromagnetic radiation source and detector. This structure with its multiple reflection and refraction surfaces amplifies the effect of refraction index changes, significantly enhancing measurement sensitivity while keeping the overall device configuration manageable through modular design.
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 device achieves improved measurement precision and sensitivity by magnifying the deflection angle of electromagnetic radiation, allowing for accurate solution concentration determination while avoiding liquid interference.
Implementation Method 1
a ray emitted by the electromagnetic radiation emitter sequentially passes the ray entrance portion, the detecting part, the solution to be detected and the first total internal reflection part, and then the ray is totally internally reflected and converged to the second total internal reflection part and totally internally reflected again to pass the ray exit portion
Implementation Method 2
when homogeneous light passes solutions having different concentrations, the wavelength is affected, so that the Abbe refractometer can measure the solution concentration by measuring the refraction index
Data Source
AI summary
A device for measuring solution concentration includes housing, a catadioptric structure, an electromagnetic radiation emitter and an electromagnetic radiation detector. The housing is formed with a detecting part for receiving a solution to be detected. The catadioptric structure is received in the housing, and includes a ray entrance portion, a first total internal reflection part, a second total internal reflection part and a ray exit portion. An accommodation part corresponds to the detecting part. The emitter is disposed at one side of the ray entrance portion, and a ray sequentially passes the ray entrance portion, the detecting part, the solution to be detected, and the first total internal reflection part. Then, the ray is totally internally reflected and converged to the second total internal reflection part, and is reflected again. Finally, the ray passes the ray exit portion and is received by the detector.