Distributed Paging Network With Addressable Amplifiers for Fail-Safe Zoning
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Solution Overview
Problem
Large paging systems in public venues are complex and prone to catastrophic failure due to reliance on central switching boxes, making them unreliable for emergency situations and difficult to configure and monitor, especially in geographically distributed zones with varying acoustic environments.
Innovation Solution
A distributed paging system with a combined data and digital audio network, featuring addressable amplifier modules and consoles that transmit data packets across the network, allowing for decentralized operation, monitoring of equipment status, and dynamic adjustment of audio parameters based on ambient conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a central switching box is used to direct messages from paging units to destinations, then the paging system can be configured and controlled centrally, but the system becomes vulnerable to catastrophic failure when the switching box fails
Solution Approach 1:
The patent divides the centralized paging system into distributed autonomous nodes. Each paging unit and amplifier module operates independently with its own processing capabilities, eliminating the single point of failure represented by the central switching box. Messages are routed through multiple potential paths across the network, ensuring continued operation even if individual nodes fail.
Solution Approach 2:
The patent introduces a digital network as an intermediary layer between paging units and amplifiers. This network-based communication infrastructure replaces the direct switching box architecture, allowing messages to be transmitted through multiple intermediate nodes rather than requiring a single central switching point.
2Measurement precision
If paging parameters are configured to optimise intelligibility close to the paging source, then local intelligibility is improved, but the parameter settings become suboptimal in remote zones where ambient acoustic conditions differ
Solution Approach 1:
The patent enables each amplifier module to independently adjust audio parameters based on local acoustic conditions in its specific zone. Rather than applying uniform settings system-wide, each node can optimize gain, equalization, and other parameters to match the ambient noise levels and acoustic characteristics of its local environment, thereby improving intelligibility in both near and far zones.
Solution Approach 2:
The patent implements dynamic parameter adjustment capabilities that allow paging systems to adapt to changing acoustic conditions in real-time. Amplifier modules can modify audio settings based on ambient noise monitoring and feedback, enabling the system to respond to varying acoustic environments rather than relying on static pre-configured parameters.
3Device complexity
If a centralized switching box architecture is used, then system configuration is simplified, but the complexity of determining remote zone functionality and monitoring system status increases
Solution Approach 1:
The patent implements feedback mechanisms where each amplifier module and paging unit continuously reports its operational status, ambient noise levels, and message delivery confirmation back through the digital network. This distributed feedback system enables automatic monitoring of remote zones without requiring complex centralized diagnostic procedures, as each node provides real-time information about its local conditions.
Data Source
AI summary
The present invention relates to a distributed paging system. The distributed paging system includes a combined data and digital audio network and a plurality of paging system consoles. Each paging system console includes an operator interface to select one or more paging destinations and is arranged to transmit data packets including paging destination data across the network. A number of addressable amplifier modules are provided in communication with the network and are responsive to the data packets. Each of the amplifier modules has an associated address and is arranged to operate according to whether paging destination data contained within the data packets relates to the associated address.