Fire Detection Isolation Circuit Recovery Time

The patent inverts the traditional sequential closing approach by having all isolation circuits close their switches simultaneously rather than one-by-one. This reversal of the closing sequence eliminates the cumulative delay inherent in sequential operation, allowing the system to recover much faster while still maintaining organized control through coordinated simultaneous action.

The patent implements preliminary validation of short circuits before initiating the closing sequence. Each isolation circuit validates the presence of a short circuit until the last moment before closing its switch, and only circuits that confirm no short circuit is present will close. This preliminary validation ensures safe operation while enabling faster recovery by avoiding sequential delays.

The patent applies local quality by enabling each isolation circuit to independently determine whether its local zone has a short circuit condition. Instead of a blanket isolation of all zones, each circuit closes its switch only if it validates that no short circuit is present in its specific zone. This localized decision-making ensures that only zones with actual short circuits remain isolated, while other zones can resume normal functionality.

The patent segments the isolation decision-making process into independent units at each isolation circuit. Each circuit autonomously validates short circuit conditions and makes its own closing decision rather than following a centralized sequential command. This segmentation allows parallel operation of validation and closing actions, enabling faster system recovery while maintaining safety through localized validation.