Receiver Fault Detection via Integrated Signal Recording
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Solution Overview
Problem
Current building alarm systems face inefficiencies in detecting and diagnosing faulty event transmissions between on-site security systems and central monitoring facilities, as they lack automated recording and analysis capabilities, leading to manual review challenges and potential missed signal issues due to equipment placement and timing discrepancies.
Innovation Solution
A system that automatically records and processes event signal data at the receiver, determining conformance to predefined parameters, saving faulty data for review, and providing indications for operators, while eliminating the need for additional recording equipment and ensuring detection of receiver-related faults.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If add-on recording equipment is added to the telephone line to capture faulty transmission signals, then faulty signals can be recorded for analysis, but the equipment complexity increases and the signal quality may be degraded
Solution Approach 1:
The patent combines the recording function with the existing receiver by integrating a recording device into the receiver unit. This merging eliminates the need for separate add-on recording equipment, reducing system complexity while maintaining the ability to capture and analyze faulty transmission signals for improved reliability
Solution Approach 2:
The receiver is designed to perform multiple functions: it receives event transmissions, records signals (both normal and faulty), and enables analysis of transmission quality. This multi-functionality eliminates the need for dedicated recording equipment, reducing overall system complexity while enhancing fault detection capabilities
2Reliability
If add-on recording equipment is used to record faulty transmissions, then fault data can be captured, but the review process becomes time-consuming due to lack of precise time synchronization
Solution Approach 1:
The system performs preliminary actions by continuously recording all event transmissions with precise time stamps before faults occur. The recording device captures signals in advance and maintains accurate time synchronization, so when a fault occurs, the data is already prepared and precisely timed, eliminating the need for manual synchronization during review and reducing analysis time
Solution Approach 2:
The system provides feedback through time-synchronized recording and indexing of captured signals. The receiver records all transmissions with precise time stamps and makes this data available for immediate review, creating a feedback loop that allows operators to quickly locate and analyze faults without manual synchronization efforts
3Reliability
If recording equipment is placed upstream of the receiver to capture signals, then transmission line faults can be detected, but receiver-related faults cannot be identified
Solution Approach 1:
The recording device acts as an intermediary positioned within the receiver that captures signals at multiple points in the processing chain. It records both the incoming transmission signals and the processed signals after receiver handling, enabling identification of whether faults occur in the transmission line or during receiver processing by comparing the two signal states
4Ease of operation
If manual review of recorded signals is performed, then fault analysis can be conducted, but the process is inefficient due to poor recording quality and lack of calibrated equipment
Solution Approach 1:
The system performs self-service through automated recording with precise time stamps and automated indexing of captured signals. The recording device within the receiver automatically captures, times, and organizes fault data without requiring external calibrated equipment or manual setup, enabling efficient automated review processes and improving both operational ease and productivity
Data Source
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AI summary
A system and method are disclosed for recording and evaluating faults in event transmissions between security system components. A panel in a monitored building may send event signals to a receiver located in a central monitoring facility. Event signals may represent a status of individual alarms or sensors in the building, or they may provide a status of the system as a whole. If the quality of the transmission is substandard or in a format that is unacceptable to the receiver, the signal data associated with the event is recorded for analysis. Recording is controlled by a line card associated with the receiver, and the signal data is stored in local or remote memory. Signal data can be manually or automatically analyzed to determine the source of the fault. In addition, recorded signal data can be used to build customized software to recognize signals from previously unrecognized or faulty panels.