Redundant Control Unit Mesh Network for Wireless Fire Detection
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Solution Overview
Problem
Conventional security systems face challenges in maintaining reliable wireless connections with sensors, leading to potential failures in communication during threats, especially in environments where structural damage or sabotage can disrupt the control units.
Innovation Solution
The implementation of a redundant control unit in a different physical location, which forms a secondary mesh network with sensors, allowing for continuous communication and fault tolerance in case of primary control unit failure, and dynamically adjusts routing tables based on link quality to ensure reliable message delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single control unit is used to monitor wireless sensors, then the system structure is simple, but the reliability of communication is compromised when the control unit fails or is damaged
Solution Approach 1:
The patent implements a mesh network topology where each control unit and sensor acts as a local node with specific communication capabilities. Instead of a centralized control structure, each node maintains local routing information and can independently forward messages, creating localized communication paths that improve overall system reliability without requiring complete system redesign
Solution Approach 2:
The system pre-establishes multiple routing paths and maintains backup control units before failures occur. When a control unit fails, the mesh network automatically reroutes communications through pre-configured alternative paths, eliminating the need for reactive system reconfiguration and ensuring continuous operation
2Area of stationary object
If wireless sensors are deployed throughout the secured area, then coverage is improved, but maintaining reliable connections becomes more difficult
Solution Approach 1:
The patent divides the wireless network into multiple mesh segments, each managed by a control unit. Sensors are grouped into zones with dedicated control units, and each segment maintains independent communication paths. This segmentation prevents single-point failures from affecting the entire network and allows localized optimization of communication reliability in each area
Solution Approach 2:
Control units act as intermediary nodes between sensors and the central monitoring system. Rather than requiring direct connections between all sensors and the central system, the mesh network uses intermediate control units and relay sensors to forward messages, extending coverage while maintaining connection reliability through multiple hops
3Ease of repair
If the control unit is placed in a central location for easy access, then maintenance is simplified, but the system becomes vulnerable to single-point failures from structural damage or sabotage
Solution Approach 1:
The patent transitions from a centralized control architecture to a distributed mesh network spanning multiple spatial locations. Control units are distributed throughout the secured area rather than concentrated in one location, creating a three-dimensional network topology that provides both physical redundancy and geographic dispersion for improved fault tolerance
Data Source
AI summary
A system is provided that includes a plurality of sensors that detect threats within a secured geographic area, a control panel that monitors the plurality of sensors for activation, a primary control unit that forms a primary mesh network coupling the plurality of sensors with the control panel based upon relative link quality, wherein the primary mesh network is defined by a primary routing table, and a redundant control unit that forms a secondary mesh network coupling the plurality of sensors with the control panel based upon the relative link quality, wherein the secondary mesh network includes a respective relationship of each of the plurality of sensors defined by a secondary routing table, wherein the redundant control unit is located in a different geographic location than the primary control unit within the secured geographic area, and wherein the secondary routing table is different than the primary routing table.