Optical Fiber Correction System for Absolute Temperature Measurement
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Solution Overview
Problem
Optical fiber sensing analysis results, such as temperature, noise, or other parameters, are typically provided as relative values, making it difficult for users to visualize absolute values, prompting a need for a technique to correct these results into absolute values.
Innovation Solution
A correction system comprising an optical fiber sensing apparatus, an analysis apparatus, an absolute value acquisition apparatus, and a correction apparatus that receives optical signals from optical fibers, analyzes data, acquires absolute values, and corrects relative analysis results into absolute values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical fiber sensing is used to measure temperature, then temperature distribution along the optical fiber can be obtained, but the measurement results are only relative values without absolute temperature information
Solution Approach 1:
The patent introduces an intermediary substance (liquid crystal or phase change material) that mediates between the optical fiber sensing system and the temperature measurement. This intermediary undergoes phase changes or optical property changes at specific temperature points, providing reference markers that enable conversion of relative optical measurements into absolute temperature values.
Solution Approach 2:
The patent utilizes parameter changes in the intermediary material (such as refractive index changes, phase transitions, or color changes) in response to temperature variations. These parameter changes create detectable optical signals that correspond to absolute temperature values, allowing the system to translate relative optical fiber measurements into absolute temperature readings.
2Ease of operation
If relative temperature values are displayed to users, then temperature distribution can be visualized, but users cannot grasp the actual absolute temperature at specific positions
Solution Approach 1:
The intermediary material serves as a visual mediator that translates absolute temperature information into optical signals detectable by the fiber optic system. The material's optical properties (such as refractive index, absorption, or phase state) change at specific temperature points, creating visible markers along the optical fiber that correspond to absolute temperature values, thereby enabling both visualization and absolute temperature determination.
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 the conversion of relative analysis results from optical fiber sensing into absolute values, allowing users to accurately visualize and understand temperature or other parameter measurements.
Implementation Method 1
receiving backscattered light generated due to transmission of the pulsed light through the optical fiber, and analyzing an analysis target around the optical fiber based on a change in a wavelength of the backscattered light
Data Source
AI summary
A correction system (1) according to the present disclosure includes: an optical fiber sensing apparatus (101) configured to receive an optical signal from an optical fiber (200), and acquire sensed data from the optical signal; an analysis apparatus (102) configured to analyze an analysis target based on the sensed data; an absolute value acquisition apparatus (103) configured to acquire an absolute value of the analysis target; and a correction apparatus (104) configured to correct an analysis result for the analysis target from the analysis apparatus (102), based on the absolute value of the analysis target.