Distributed Alarm System with Hub Station Audio Analysis
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Solution Overview
Problem
Single point two-way voice communication in security systems can lead to false alarms and nuisance calls, reducing the effectiveness of security systems and potentially resulting in non-response or fines for home or business owners, due to limited communication range and lack of accurate intrusion detection.
Innovation Solution
A distributed alarm system with client stations and a hub station that utilize short-range and long-range telecommunications networks, including local area networks, personal area networks, and Public Switched Telephone Networks, to enable bi-directional voice and image communication, allowing for accurate intrusion detection and location tracking through sound analysis and mapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single point two-way voice communication is used in security systems, then the system structure is simple, but the communication range is limited and false alarms increase
Solution Approach 1:
The security system is segmented into multiple distributed client stations throughout the protected area, each capable of independent audio monitoring and two-way communication. This segmentation allows the system to maintain simple individual unit structures while achieving reliable system-wide performance through distributed architecture.
Solution Approach 2:
A hub station is introduced as an intermediary component that coordinates communication between multiple client stations and the central monitoring station. The hub manages audio data aggregation, intruder location determination, and communication routing, enabling reliable operation without requiring complex peer-to-peer interactions between all system components.
2Reliability
If multiple distributed client stations are deployed, then communication range and intrusion detection accuracy improve, but device complexity increases
Solution Approach 1:
The system divides the monitoring function into multiple independent client stations distributed throughout the protected area. Each station independently monitors its local zone, and the hub aggregates data from all stations to determine intruder location. This segmentation improves detection accuracy by providing multiple observation points while keeping individual station complexity low.
Solution Approach 2:
Multiple audio feeds from distributed client stations are merged at the hub station, which combines the data to determine intruder location and coordinates the two-way communication response. This merging allows the system to achieve comprehensive coverage and accurate location tracking without requiring each individual station to perform complex analysis functions.
3Reliability
If distributed audio monitors are used, then false alarms are reduced through verification, but system cost and complexity increase
Solution Approach 1:
The monitoring function is segmented across multiple client stations, each equipped with audio monitoring capabilities. During an alarm event, multiple stations can independently verify the intrusion by detecting audio signatures, providing redundant verification without requiring a single complex centralized monitoring system.
Solution Approach 2:
Client stations perform self-verification of alarm conditions by locally analyzing audio data from multiple sensors. Each station can independently determine whether an alarm condition is genuine or a false alarm, reducing the burden on centralized monitoring infrastructure and enabling distributed intelligence in the verification process.
Data Source
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AI summary
Disclosed is a hub station of an alarm system, having: a hub station housing; a hub station controller disposed within the hub station housing, wherein the hub station is configured for: monitoring, over a short range telecommunications network, a plurality of client stations that are distributed in a plurality of architectural zones, the plurality of client stations each including a client station housing and located therein a client station power transformer, a client station speaker, a client station microphone, and one of a plurality of client station controllers; determining, from the monitoring, that an alert condition exists in the one of the architectural zones; and establishing a first bidirectional communication concurrently with two or more of the plurality of client stations distributed in the plurality of architectural zones.