Multipoint Detection Fiber Sensor for Curved Shape Measurement
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Solution Overview
Problem
Existing multipoint detection fiber sensors face challenges in accurately detecting curved shapes with a high number of detection points while minimizing the number of optical fibers, leading to difficulties in manufacturing and maintaining the accuracy of curve measurements.
Innovation Solution
The implementation of a multipoint detection fiber sensor system with multiple optical fibers arranged in an overall effective detection area, where each optical fiber includes multiple sensing parts at different positions, utilizing characteristic absorption bands to detect curve amounts, and employing a light source, optical couplers, and light receivers to transmit and receive light for accurate curve measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of detection points is increased to improve detection precision, then measurement precision is improved, but device complexity increases due to the need for more optical fibers
Solution Approach 1:
The insertion section is divided into multiple detection sections, with at least one optical fiber arranged in each detection section. This segmentation allows the system to achieve multipoint detection by distributing optical fibers across different sections rather than requiring dense packing throughout, thereby improving curved-shape detection precision while controlling device complexity
Solution Approach 2:
The patent transitions from detecting curve amounts at single points to detecting across multiple spatial dimensions by arranging optical fibers in different detection sections along the insertion section. This dimensional approach enables comprehensive curved-shape detection without proportionally increasing the total number of optical fibers
2Ease of manufacture
If the distance between sensing parts is increased to simplify manufacturing, then ease of manufacture is improved, but measurement precision deteriorates due to fewer detection points
Solution Approach 1:
The detection area is segmented into multiple detection sections with optical fibers arranged in each section. This allows sensing parts to be spaced further apart within each section while maintaining overall detection precision through the distributed arrangement across sections, thus simplifying manufacturing without sacrificing measurement accuracy
Solution Approach 2:
Each optical fiber serves multiple functions by detecting curve amounts at multiple positions along its length within different detection sections. This multi-functionality compensates for the increased distance between sensing parts, maintaining measurement precision while easing manufacturing constraints
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
This configuration allows for high-accuracy curved-shape detection with a reduced number of optical fibers, simplifies manufacturing by increasing the distance between sensing parts, and enhances the ability to measure curve amounts at multiple points, thereby improving the detection precision and reducing the complexity of computations.
Implementation Method 1
each optical fiber provided with a sensing part to cause a transmission amount of light to be varied corresponding to the angle at which the fiber is curved
Data Source
AI summary
A multipoint detection fiber sensor including a plurality of sensing parts at a plurality of positions is provided. The sensing parts are able to detect curve amounts respectively. The multipoint detection fiber sensor includes a plurality of optical fibers arranged in an overall effective detection area that is an extent in which the multipoint detection fiber sensor detects curve amounts. Each of the optical fibers includes the plurality of sensing parts. The multipoint detection fiber sensor also includes a light source which supplies light to the optical fibers and a light receiver which receives light emitted through the optical fibers to which light is supplied. Furthermore, an insertion apparatus into which the multipoint detection fiber sensor is incorporated is provided.