Interconnected Alarm Testing With ON-OFF Switch Verification
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Solution Overview
Problem
Existing interconnected smoke, heat, and carbon monoxide alarm systems require at least two persons to fully test their detection and warning functions, which is inconvenient for single-occupant dwellings and often results in substandard testing.
Innovation Solution
A method and system allowing a single person to test the functionality of interconnected alarms by using ON and OFF test switches, ensuring all alarms activate and provide audible warnings through a series of actions and verifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional interconnected alarm systems are tested, then detection and warning functions can be verified, but at least two persons are required to perform the test
Solution Approach 1:
A second alarm device acts as an intermediary to verify the interconnection function. When the first alarm is tested and activates, it sends a signal through the interconnection wiring to the second alarm, which then activates to confirm the interconnection is working. This intermediary approach allows a single person to verify both the local alarm function and the remote interconnection function without needing another person present.
2Ease of operation
If a single person tests interconnected alarms, then testing accessibility is improved, but the ability to verify all alarms activate is reduced
Solution Approach 1:
The system incorporates visual feedback through LEDs and audible feedback through the alarm siren to confirm proper operation. When the test is performed, the activated alarm provides visual and audible signals, and the second alarm's activation provides confirmation that the interconnection is functioning correctly. This feedback mechanism allows a single person to accurately verify the complete system operation without needing another person to observe and confirm.
Data Source
AI summary
A method for a single person to fully test the smoke, heat, or carbon monoxide detection and warning functions of each alarm device of an interconnected fire alarm system comprising of two or more compatible interconnected alarm devices such as smoke alarms, heat alarms, or carbon monoxide alarms in any combination and with interconnections and power supplies of any type, the system including interconnected alarm devices with ON and OFF test switches instead of momentary action test switches, and the smoke, heat, or carbon monoxide detection and warning functions of each of the system's interconnected alarm devices are tested by a number of actions and verifications by a single person.