Fence Monitoring via Optical Signal Pattern Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing monitoring systems for detecting abnormalities in monitoring targets, such as fences, require the use of special optical fibers like FBG and OTDR fibers, and multiple optical fibers laid across the target, which is costly and inefficient.
Innovation Solution
A monitoring system that uses a cable with an optical fiber, a reception unit to detect patterns in optical signals from the fiber, and a control unit to determine the state of the monitoring target based on these patterns, eliminating the need for special optical fibers and multiple fiber laydowns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If FBG optical fiber and OTDR optical fiber are used together to detect intruders, then detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines FBG optical fiber and OTDR optical fiber into a single integrated system where both fibers are laid on the fence and work together to detect different types of intrusions. The FBG fiber detects climbing attempts while the OTDR fiber detects breaking attempts, merging their detection capabilities into one unified monitoring system.
Solution Approach 2:
The monitoring system is designed to perform multiple detection functions using the same basic infrastructure of optical fibers laid on the fence. The system can detect both climbing intrusions (via FBG) and breaking intrusions (via OTDR) with the same installation approach, making the system multi-functional rather than requiring separate systems for different threat types.
2Measurement precision
If a plurality of optical fibers are laid on the fence to detect different events, then detection accuracy is improved, but installation complexity and cost increase
Solution Approach 1:
The patent divides the detection function into different optical fiber types positioned at different locations on the fence. FBG optical fibers are placed to detect climbing events while OTDR optical fibers are placed to detect breaking events, segmenting the detection responsibilities to improve accuracy for specific threat types.
Solution Approach 2:
Different optical fiber types are strategically positioned at different locations on the fence based on the specific detection needs of each area. The FBG and OTDR fibers are laid on different portions of the fence structure to optimize detection of climbing versus breaking events, applying local quality to enhance detection accuracy where needed.
3Reliability
If multiple types of optical fibers are used for monitoring, then detection reliability is improved, but loss of time for system setup increases
Solution Approach 1:
The patent prepares a comprehensive table in advance that maps pulse signal characteristics (delays and generation frequencies) from multiple optical fibers to specific fence events. This preliminary classification framework allows for rapid event identification once the system is deployed, reducing the time needed to interpret detection data.
Solution Approach 2:
The system uses multiple optical fibers that are laid on the fence in parallel, with each fiber providing redundant detection capability. The pulse signals from multiple fibers are processed together to confirm events, creating a copied verification mechanism that improves reliability while using standardized fiber installation procedures.
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 solution allows for the detection of the state of a monitoring target without the need for special structures, reducing costs and improving detection accuracy by analyzing dynamic patterns in the optical signals.
Implementation Method 1
receive an optical signal including a pattern corresponding to a state of a monitoring target from at least one optical fiber included in the cable
Data Source
AI summary
A monitoring system according to the present disclosure includes a cable (20) comprising an optical fiber, a reception unit (31) configured to receive an optical signal including a pattern corresponding to a state of a monitoring target (10) from at least one optical fiber included in the cable (20) and to detect the pattern from the received optical signal, and a control unit (32) configured to detect the state of the monitoring target (10) based on the pattern.