Walktest Decoder for Fire Alarm Panel Zone Verification
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Solution Overview
Problem
Conducting a walktest of a fire alarm system without an RS232 output connection is time-consuming and costly, requiring two inspectors to activate and monitor field devices.
Innovation Solution
A walktest decoder is used to convert output signals from the fire alarm control panel into a format processable by a computing device, allowing a single inspector to use a mobile computing device wirelessly connected to the computing device to verify zone identification during a walktest.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fire alarm control panel without RS232 output connection is used, then the system can be installed in locations without direct computer access, but a walktest requires two inspectors which increases time and cost
Solution Approach 1:
The patent introduces a wireless communication intermediary (mobile device with application) that mediates between the fire alarm control panel and the inspector. The mobile device receives alarm signals wirelessly from the control panel and displays zone information to the inspector, eliminating the need for a second inspector to monitor the control panel while enabling single-inspector walktests with full functionality.
2Reliability
If two inspectors are used to conduct a walktest, then complete monitoring of field device activation and control panel status is achieved, but the process becomes time-consuming and costly
Solution Approach 1:
The patent implements feedback by having the mobile device display real-time zone identification information received from the fire alarm control panel. This allows the single inspector to immediately verify that the correct zone is identified when activating field devices, providing the same verification capability that previously required a second inspector without reducing test completeness.
3Ease of operation
If an RS232 output connection is provided on the fire alarm control panel, then direct computer connection enables single-inspector walktests, but the system requires physical access to the control panel location
Solution Approach 1:
The patent replaces the mechanical/physical connection requirement (RS232 cable connection) with a wireless communication system. The mobile device receives alarm signals wirelessly from the fire alarm control panel, eliminating the need for physical proximity to the control panel and enabling single-inspector walktests while maintaining installation flexibility in locations without direct computer access.
Data Source
AI summary
Techniques for conducting, with a single human inspector, a walktest of a fire alarm system having a fire alarm control panel that does not include an RS232 interface are provided. A fire alarm control panel is coupled to a plurality of field devices. The fire alarm control panel provides an output signal identifying a zone of a field device when the field device is activated. A walktest decoder is coupled to the fire alarm control panel and is coupled to a computing device. The walktest decoder converts the output signal from the panel to a format for reception and processing by the computing device. A mobile computing device is wirelessly coupled to the computing device. The mobile computing device receives a wireless signal from the computing device indicating the identified zone. The mobile computing device is used by the inspector to determine if the correct zone was identified.