Automatic monitoring system for airfield lighting systems

Details Automatic monitoring system for airfield lighting systems Automatic monitoring system for airfield lighting systems

1991-10-03

1994-10-25

Swarthout, Brent

Communications: electrical

Aircraft alarm or indicating systems

Land-based landing guidance

315130, 340642, G08G 500

Patent

active

053593251

ABSTRACT:
A runway lighting system comprises a series runway transmission line providing current to a plurality of runway lamps. A failed lamp indicator (FLI) connects across the terminals of each lamp to determine when the lamp is malfunctioning. When the FLI determines that a lamp is malfunctioning, the FLI transmits a malfunction signal, during a specific time period defined in lamp address circuitry in each FLI, onto the existing series runway transmission line. A circuit status analyzer (CSA), which forms part of the vault computer, receives the malfunction signal, noting the time period during which the signal was received. The CSA then accesses an internal ROM look-up table to determine which FLI sent the signal.

REFERENCES:
patent: 3715741 (1973-02-01), McWade et al.
patent: 4675574 (1987-06-01), Delflache
patent: 4951046 (1990-08-01), Lambert et al.
patent: 5034659 (1991-07-01), Taniguchi

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