Fiber Optic Smoke Detection with Optical Enhancement
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Solution Overview
Problem
Conventional smoke detection systems face delays in detecting fire due to smoke transport time in pipe network systems and dilution of smoke with clean air, leading to potential failure in activating fire suppression systems.
Innovation Solution
A fiber optic detection system using a fiber harness with nodes that transmit light to measure conditions, featuring optical enhancement devices like filters, polarizers, and antireflective coatings to reduce interference and enhance detection accuracy, allowing for earlier localization and detection of smoke or fire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pipe network system is used to transport smoke to a remote detector, then the detection system can be installed away from the monitored area, but smoke transport time causes delays in detecting fire
Solution Approach 1:
The patent replaces the mechanical pipe network transport system with an optical detection system using fiber optic cables and light scattering principles. Instead of physically transporting smoke through pipes to a remote detector, the system uses light scattered by smoke particles in the air to provide immediate detection signals, eliminating smoke transport time delays while maintaining detection accuracy.
2Reliability
If smoke is drawn through a pipe network to a remote detector, then the detector can be positioned remotely, but smoke dilutes with clean air from other inlets reducing detectability
Solution Approach 1:
The patent replaces the pipe network mechanical transport system with an optical scattering detection system. Instead of collecting and transporting smoke through pipes where it dilutes with clean air, the system detects smoke particles in situ by measuring light scattered by the particles, thereby maintaining full smoke concentration sensitivity without dilution effects.
3Device complexity
If conventional point smoke detectors are used, then the system is simple, but detection delays occur due to smoke transport time
Solution Approach 1:
The patent replaces conventional point smoke detectors with an optical detection system using fiber optic cables. Instead of relying on smoke to physically reach a detector through air currents, the system uses light transmitted through fiber optic cables that scatters off smoke particles, providing immediate detection without the time delays associated with smoke transport to remote detectors.
4Measurement precision
If optical enhancement devices are added to reduce interference, then detection accuracy improves, but device complexity increases
Solution Approach 1:
The patent introduces optical enhancement devices as intermediary components between the light source and the detection system. These devices (filters, polarizers, wave plates) act as mediators that selectively enhance the desired light signals while blocking interference, thereby improving detection accuracy without requiring fundamental changes to the overall system architecture.
Solution Approach 2:
The patent employs optical enhancement devices that manipulate light parameters (wavelength, polarization state, intensity) to improve signal quality. By changing the parameters of the light used for detection and the characteristics of the detected scattered light, the system achieves higher measurement precision while keeping the added complexity manageable through well-established optical techniques.
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 enables faster and more accurate detection of smoke or fire, reducing false alarms and ensuring timely activation of fire suppression systems by minimizing delays and interference, thus enhancing safety and reducing equipment exposure.
Implementation Method 1
a fiber harness having at least one fiber optic cable for transmitting light
Implementation Method 2
scattered light associated with the node is transmitted to the control system, wherein the control system analyzes the scattered light
Implementation Method 3
an optical enhancement device operably connected to the fiber harness to reduce interference sources transmitted from the node; wherein the optical enhancement device is one or more of a filter, a polarizer, an antireflective coating, or a wave plate
Implementation Method 4
wherein the optical enhancement device is one or more of a filter, a polarizer, an antireflective coating, or a wave plate
Data Source
Figure 1
Figure 1A
Figure 2A~2B
AI summary
A detection system for measuring one or more conditions within a predetermined area includes a fiber harness having at least one fiber optic cable for transmitting light, the at least one fiber optic cable defining a node arranged to measure the one or more conditions. A control system is operably coupled to the fiber harness such that scattered light associated with the node is transmitted to the control system, wherein the control system analyzes the scattered light to determine at least one of a presence and magnitude of the one or more conditions at the node. An optical enhancement device is operably connected to the fiber harness or to the control system to reduce interference sources transmitted from the node.