Optical Fiber Sensing System for Multi-Parameter Target Identification

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Solution Overview

Problem

Current optical fiber sensing systems are limited in their ability to monitor complex and varied environmental parameters, such as vibrations, sounds, and temperatures, across multiple sites, failing to meet the advanced monitoring needs arising from societal informatization and automatization.

Innovation Solution

The system employs two optical fiber networks to detect and identify monitoring targets by receiving light signals that contain sensing information, including vibrations, sounds, and temperatures, using reception units and an identification unit to analyze and associate the data for precise target identification.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a simple individual monitoring function is used, then the system is easy to operate and maintain, but it cannot meet the broadened monitoring needs from advanced informatization and automatization

Engineering Contradiction:
Improvemonitoring capabilityVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements multi-functionality by enabling a single optical fiber sensing system to perform multiple monitoring tasks simultaneously. The system can detect various physical quantities (vibration, sound, temperature) and identify multiple monitoring targets using the same optical fiber infrastructure, thereby meeting broadened monitoring needs without requiring separate dedicated systems for each function.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent applies segmentation by dividing the monitoring function into distinct modules: a sensing module that detects physical quantity fluctuations, an identification module that determines monitoring targets based on detected information, and a communication module that transmits data. This modular approach allows the system to handle complex monitoring needs through coordinated operation of independent functional units.

Inventive Principle:
Principle #1Segmentation

2Measurement precision

If multiple optical fiber networks are used to detect sensing information, then the measurement precision and breadth of sensing is improved, but the device complexity increases

Engineering Contradiction:
Improvesensing precisionVSAvoidnetwork complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges multiple optical fiber networks into a unified sensing system where different optical fibers detect sensing information about the same or different monitoring targets. The reception units collect light signals from multiple optical fiber networks, and the identification unit integrates information from all networks to comprehensively identify monitoring targets, thereby achieving high measurement precision through combined data from multiple sources.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If optical fibers are utilized in various states at different sites, then the adaptability and application breadth are enhanced, but the difficulty of detecting and measuring increases

Engineering Contradiction:
Improveapplication breadthVSAvoiddetection difficulty
Core Design Contradiction:
Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent introduces an identification unit as an intermediary that processes sensing information from optical fibers in various states and locations. This intermediary module standardizes the detection process by receiving fluctuation information from diverse optical fiber configurations and converting it into unified monitoring target identification results, thereby reducing the difficulty of detecting and measuring across different application scenarios.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 approach enables advanced optical fiber sensing capabilities, allowing for the monitoring of diverse targets across various sites and states, enhancing the accuracy and breadth of sensing applications.

Implementation Method 1

By monitoring the fluctuation in loss due to a stress applied to an optical fiber, the optical fiber can be used as a sensor

Methodology Applied
Scientific EffectOptical fiber sensing: Optical Fibre

Implementation Method 2

monitoring the fluctuation in loss due to a stress applied to an optical fiber, the optical fiber can be used as a sensor

Methodology Applied
Scientific EffectLight: Light

Data Source

PatentUS12117336B2Optical fiber sensing system, optical fiber sensing method, and optical fiber sensing apparatus
Publication Date: 2024.10.15 NEC CORP
  • US12117336B2 patent drawing
  • US12117336B2 patent drawing
  • US12117336B2 patent drawing

AI summary

An optical fiber sensing system according to this disclosure includes: a first optical fiber network (10A) configured to detect first sensing information about a monitoring target; a second optical fiber network (10B) configured to detect second sensing information about the monitoring target; a first reception unit (21A) configured to receive a first light signal from the first optical fiber network (10A); a second reception unit (21B) configured to receive a second light signal from the second optical fiber network (10B); and an identification unit (22) configured to identify the monitoring target, based on the first sensing information included in the first light signal, and the second sensing information included in the second light signal.