Fiber Optic Sensing for Stadium Security and Fire Detection
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Solution Overview
Problem
Conventional monitoring systems in large public venues like stadiums lack comprehensive and real-time environmental and security monitoring capabilities, particularly in inaccessible areas and harsh environments, and are prone to interference and inefficiencies in detecting critical events such as intrusion, fire, and air quality issues.
Innovation Solution
The implementation of distributed fiber optic sensing (DFOS) systems integrated with machine learning-based intelligent analyzers, utilizing optical fibers for continuous, real-time monitoring of temperature, vibration, strain, and acoustic events, combined with gas sensing technologies, to provide comprehensive security, management, and environmental monitoring across large areas, including parking lots, stadiums, and peripheries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional monitoring systems are used in large public venues, then device complexity is reduced, but measurement precision and reliability deteriorate due to interference and inability to detect critical events in inaccessible areas
Solution Approach 1:
The patent replaces conventional electronic monitoring systems with fiber optic sensing systems that use light-based detection instead of electrical signals. This substitution eliminates susceptibility to electromagnetic interference and radio frequency interference, thereby improving measurement precision and reliability without significantly increasing system complexity
Solution Approach 2:
The fiber optic sensing system is designed to perform multiple monitoring functions simultaneously including temperature monitoring, vibration detection, intrusion detection, and fire detection along the entire length of the fiber cable. This multi-functionality improves comprehensive detection capability while using a single integrated system rather than multiple separate devices
2Reliability
If conventional monitoring systems are deployed, then ease of operation is maintained, but reliability deteriorates due to susceptibility to interference and inability to provide continuous real-time monitoring
Solution Approach 1:
By replacing electrical-based conventional monitoring systems with fiber optic systems that use light transmission, the patent eliminates susceptibility to electromagnetic and radio frequency interference. This substitution fundamentally improves system reliability while maintaining ease of operation through centralized interrogation units that simplify system management
3Reliability
If distributed fiber optic sensing is implemented, then measurement precision and reliability improve, but device complexity increases due to integration of multiple sensing capabilities
Solution Approach 1:
The fiber optic cable serves as a universal sensing medium that simultaneously provides temperature monitoring, vibration detection, strain measurement, and acoustic event detection along its entire length. This multi-functional approach improves comprehensive monitoring capability while using a single integrated infrastructure rather than multiple separate sensing systems
Solution Approach 2:
The patent combines multiple sensing capabilities (temperature, vibration, strain, acoustic detection) into a single fiber optic infrastructure. By merging these functions into one integrated system rather than deploying separate systems, the patent improves reliability through interference immunity while managing complexity through consolidation
4Loss of information
If conventional monitoring systems are used, then ease of manufacture is maintained, but loss of information occurs due to interference and inability to detect events in harsh environments
Solution Approach 1:
The patent replaces electrical signal transmission with optical signal transmission through fiber cables, eliminating susceptibility to electromagnetic and radio frequency interference. This substitution ensures complete and accurate data transmission without information loss, while the fiber optic cable can be installed using standard telecommunications practices
Solution Approach 2:
The fiber optic sensing system utilizes the existing fiber optic communication infrastructure already deployed in the stadium for other purposes. By making the existing fiber cables serve dual purposes (communication and sensing), the system eliminates information loss without requiring additional manufacturing or installation complexity
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 accurate and timely detection of security threats, occupancy management, air quality monitoring, and early fire detection, enhancing safety and operational efficiency by providing continuous, interference-immune, and real-time data analysis across the entire venue, improving security and management capabilities.
Implementation Method 1
The signals are analyzed, and an output is generated which is indicative of the environmental conditions encountered along the length of the fiber. The signal(s) so received may result from reflections in the fiber, such as Raman backscattering
Implementation Method 2
The signal(s) so received may result from reflections in the fiber, such as Raman backscattering, Rayleigh backscattering
Implementation Method 3
The signal(s) so received may result from reflections in the fiber, such as Raman backscattering, Rayleigh backscattering, and Brillion backscattering
Data Source
AI summary
Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously are employed in smart stadium or other venue applications, such applications including: parking lot security and management; intrusion detection; social sensing; air quality monitoring and early fire detection—among others.