Optical Fiber Sensing System for Fence Action Detection
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Solution Overview
Problem
Existing optical fiber sensing systems for monitoring targets near fences are limited in accurately detecting specific actions due to reliance on rough vibration magnitude references, and their accuracy is reduced by environmental changes in the fiber cable layout.
Innovation Solution
An optical fiber sensing system that includes a cable with optical fibers, a reception unit to detect vibrations, and an action specifying unit that analyzes the dynamic patterns of vibrations to identify actions based on the environment where the vibration occurred, allowing for more precise and flexible action specification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rough reference such as vibration magnitude is used to determine target states, then the system is simple to operate, but the detection precision is insufficient and only simple states can be detected
Solution Approach 1:
The system transforms the detection approach from using single-parameter vibration magnitude to analyzing multi-parameter dynamic patterns including vibration frequency, amplitude changes over time, and spatial distribution. This parameter transformation enables detailed action specification while maintaining system operability through automated pattern recognition.
2Measurement precision
If pattern sensing using dynamic patterns is implemented to detect target actions in detail, then the detection precision is improved, but the system complexity increases
Solution Approach 1:
The system employs self-service through automated pattern recognition algorithms that independently analyze vibration patterns and specify actions without requiring complex manual configuration. The action specifying unit automatically adapts to different environments and identifies target actions, reducing the operational burden despite the enhanced detection capabilities.
3Ease of manufacture
If a fixed detection pattern is used for action specification, then the system is easy to implement, but the adaptability to different environments is reduced and accuracy decreases
Solution Approach 1:
The system implements dynamic adaptability where the detection pattern is automatically adjusted based on the specific environment in which the optical fiber cable is deployed. The action specifying unit identifies environmental characteristics and selects or modifies appropriate detection patterns, enabling the system to adapt to various laying conditions while maintaining ease of implementation through automated environmental assessment.
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 higher-level and more accurate specification of actions by adapting detection patterns to the environment, improving the system's ability to distinguish between different actions and reducing the impact of environmental factors on accuracy.
Implementation Method 1
a reception unit configured to receive, from at least one optical fiber included in the cable, an optical signal on which a vibration detected in each of a plurality of locations on the cable is superimposed
Data Source
AI summary
An optical fiber sensing system according to the present disclosure includes: a cable (20) including optical fibers; a reception unit (31) configured to receive, from at least one optical fiber included in the cable (20), an optical signal on which a vibration detected in each of a plurality of locations on the cable (20) is superimposed; and an action specifying unit (32) configured to specify, based on the optical signal, a location on the cable (20) in which the vibration has been detected and specify an action of a target to be monitored which has caused the vibration, in which the action specifying unit (32) specifies a detection pattern that is used to specify the action of the target to be monitored depending on the environment of the location on the cable (20) in which the vibration has been detected.