Fiber Optic Security System with DVS and DAS for Office Buildings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current security systems for office buildings are inadequate in addressing employee theft, property crime, and information security concerns, as they lack effective real-time monitoring and early warning mechanisms for unauthorized access and potential threats.
Innovation Solution
A security system utilizing fiber optic cables for Distributed Vibration Sensing (DVS) and Distributed Acoustic Sensing (DAS) combined with a machine-learning-based analyzer to provide real-time monitoring and early warnings for unauthorized access, employee tracking, and threat detection, integrating with existing access control systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional security systems are used for monitoring, then basic security coverage is provided, but false alarms increase and real-time monitoring capability is insufficient
Solution Approach 1:
The patent combines multiple sensing modalities (vibration sensing via DVS, acoustic sensing via DAS, and video surveillance) into a unified security system. The fiber optic cable serves dual purposes as both communication medium and sensing element, integrating structural health monitoring with security detection. This multi-modal integration enables cross-validation of detection signals, reducing false alarms while improving reliability.
Solution Approach 2:
The patent replaces traditional mechanical security sensors (such as motion detectors and contact sensors) with optical fiber-based sensing systems. The DVS and DAS technologies use light propagation characteristics in fiber optics to detect vibrations and acoustic signals, substituting mechanical sensing mechanisms with optical fields. This substitution provides higher sensitivity, immunity to electromagnetic interference, and reduced false alarm rates.
2Area of stationary object
If comprehensive security monitoring is implemented throughout the building, then security coverage is improved, but system complexity and installation difficulty increase
Solution Approach 1:
The fiber optic cable network serves multiple functions simultaneously: it acts as a communication backbone for data transmission, a sensing medium for security detection through DVS and DAS, and a structural monitoring element. This multi-functionality eliminates the need for separate sensor installations, reducing system complexity while achieving comprehensive coverage throughout the building.
Solution Approach 2:
The patent transitions from point-based or area-based security sensing to distributed continuous sensing along the fiber optic cable length. The DVS and DAS technologies enable detection at every point along the fiber, creating a one-dimensional continuous monitoring network that can be mapped to two-dimensional floor plans and three-dimensional building spaces, achieving comprehensive coverage without proportionally increasing system complexity.
3Measurement precision
If machine learning analysis is applied to security data, then detection accuracy is improved, but processing time and computational requirements increase
Solution Approach 1:
The system performs preliminary data processing and feature extraction at the edge devices closest to the fiber optic sensors, preprocessing the raw DVS and DAS signals before transmission to central analysis systems. This preliminary action reduces the computational burden on centralized machine learning models and enables faster response times by preparing data in advance for analysis.
Solution Approach 2:
The machine learning analysis is segmented into distributed edge computing nodes and centralized cloud-based processing. Simple real-time detection tasks are handled by edge devices with minimal latency, while complex pattern recognition and long-term trend analysis are performed by centralized systems with greater computational resources. This segmentation balances processing time requirements with detection accuracy needs.
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
The system effectively reduces false alarms and provides real-time security monitoring, enabling early warnings and prevention of unauthorized access, employee theft, and potential suicide risks through precise biometric analysis and acoustic signal identification.
Implementation Method 1
a fiber optic cable arranged in various locations in the building for Distributed Vibration Sensing (DVS) and Distributed Acoustic Sensing (DAS) at the various locations
Implementation Method 2
a fiber optic cable arranged in various locations in the building for Distributed Vibration Sensing (DVS) and Distributed Acoustic Sensing (DAS) at the various locations
Data Source
AI summary
A security system is provided for a building. The security system includes a fiber optic cable arranged in various locations in the building for Distributed Vibration Sensing (DVS) and Distributed Acoustic Sensing (DAS) at the various locations. The security system further includes a machine-learning-based analyzer for selectively providing any of an early warning and a prevention of various detected conditions responsive to a machine-learning-based analysis of results from the DVS and the DAS.