OTDR Data Correction Apparatus for Event Position Accuracy
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Solution Overview
Problem
Existing optical time-domain reflectometers (OTDRs) face challenges in accurately detecting events like splicing or breaking points in optical fibers, leading to incorrect measurements due to variations in refractive index and waveform characteristics.
Innovation Solution
A data correction apparatus that acquires measurement data from an OTDR, displays known and detected events, allows user input for modifying detection events, and automatically corrects event positions based on pre-input distance information, thereby improving the accuracy and convenience of data modification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automatic event detection is performed using OTDR measurement data, then measurement efficiency is improved, but measurement precision deteriorates due to incorrect event position detection
Solution Approach 1:
The system displays detected events and their positions to the user, who can provide feedback by inputting correction operations. The system then automatically corrects event positions based on this feedback, creating a closed-loop system that improves measurement precision while maintaining automatic detection efficiency.
Solution Approach 2:
The system automatically corrects event positions based on user operations without requiring manual intervention for each correction. The automatic correction function serves itself by processing user inputs and adjusting measurement data autonomously.
2Measurement precision
If manual correction of detection events is allowed, then measurement precision is improved, but ease of operation deteriorates due to increased user workload
Solution Approach 1:
The system automatically corrects event positions based on user operations rather than requiring manual adjustment of each event. This self-service approach maintains measurement precision while significantly reducing the user workload by automating the correction process.
3Productivity
If automatic correction of measurement data is performed, then productivity is improved, but reliability deteriorates due to potential incorrect corrections
Solution Approach 1:
The system implements a feedback mechanism where users can review detected events and provide correction operations. The automatic correction is based on this user feedback, ensuring that corrections are reliable and accurate while maintaining high productivity through automation.
Solution Approach 2:
The system displays detected events and their positions to users before automatic correction is applied. This preliminary action allows users to verify the correctness of corrections, ensuring reliability while maintaining efficient automated processing.
Data Source
AI summary
A data correction apparatus includes an acquisition unit configured to acquire measurement data from an optical time-domain reflectometer that measures one or more events existing in an optical fiber under test, a display configured to display one or more known events and one or more detection events so that a user can check a difference between the known events and the detection events, an input interface configured to accept, from the user, operation input to modify the detection events, and a correction unit configured to modify the detection events based on the operation input accepted from the user.