Wireless Mesh Network for Fire Alarm Reliability
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Solution Overview
Problem
Fire alarm systems in buildings face communication failures due to physical degradation from threats like fire, which compromises the fault tolerance and functionality, especially in high-rise structures where evacuation is critical.
Innovation Solution
Implementing a radio frequency-based mesh network for communication between system components, providing a multi-path, fully redundant communication path that reroutes data through alternate paths if physical links are compromised, ensuring continuous functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical media (electrical and optical links) are used for communication between fire alarm system components, then the system structure is simple and easy to implement, but the system reliability deteriorates during emergencies due to physical degradation from fire and other threats
Solution Approach 1:
The patent replaces physical media (electrical and optical links) with a wireless mesh network using radio frequency communication. This substitution eliminates the mechanical/physical communication paths that are vulnerable to fire damage, thereby improving system reliability during emergencies while accepting increased device complexity through the implementation of wireless communication protocols and mesh network architecture.
2Reliability
If a wireless mesh network is implemented for communication between system components, then the system reliability improves through multi-path redundancy, but the device complexity increases due to additional communication protocols and routing mechanisms
Solution Approach 1:
The patent implements a dynamic mesh network where communication paths are not fixed but can change based on network conditions. The system dynamically routes data packets through multiple possible paths, automatically adapting to component failures or interference. This dynamic path selection provides multi-path redundancy and improves reliability while managing complexity through adaptive routing algorithms rather than static complex wiring.
Solution Approach 2:
The wireless mesh network allows for dynamic parameter changes in communication, such as adjusting transmission power, frequency channels, and routing paths based on real-time network conditions. This flexibility enables the system to maintain reliable communication under varying emergency conditions while managing complexity through software-based parameter adjustment rather than hardware reconfiguration.
3Ease of operation
If physical communication links are used in high-rise structures, then the installation is straightforward, but the system functionality deteriorates when evacuation is required and floors need to be isolated
Solution Approach 1:
The patent replaces physical communication infrastructure with wireless mesh networking, eliminating the need for extensive wiring through building structures. This substitution makes installation more flexible and adaptable to high-rise building configurations while maintaining ease of deployment. The wireless nature allows the system to adapt to evacuation scenarios where floors may be isolated, as communication paths can be dynamically rerouted without physical reconfiguration.
Data Source
AI summary
A building safety alarm system comprising: a central controller having a dynamically addressable wireless data communication router, a plurality of remote devices each having a dynamically addressable wireless communication router and a wireless mesh communications network wherein the central controller is in wireless communication with the plurality of remote devices via a mesh network for sending and receiving instructions and data communications.