Runway approach lighting system with fault monitor

Details Runway approach lighting system with fault monitor Runway approach lighting system with fault monitor

1982-06-14

1984-05-15

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

With signal, indicator, or alarm

Plural load device systems

315200A, 315210, 315323, 340331, 340642, H05B 3703

Patent

active

044490739

ABSTRACT:
A runway approach lighting system with fault monitor includes an oscillator which develops clock pulses which are accumulated by a counter. The output of the counter is used to develop trigger signals which control the sequential energization of runway alignment indicator lights. The operation of each light is sensed and is compared with the oscillator pulses, and a fault signal is generated each time a light fails to operate in response to a trigger signal. The number of fault signals generated in an energization cycle is accumulated, and a fault indication is generated once a predetermined number of faults has occurred.

REFERENCES:
patent: 3710157 (1973-01-01), Wright
patent: 3715741 (1973-02-01), McWade et al.
patent: 3795905 (1974-03-01), Wright
patent: 3828334 (1974-08-01), Wallace
patent: 3829735 (1974-08-01), Berlock et al.
patent: 4095140 (1978-06-01), Kirkhuff et al.
patent: 4216413 (1980-08-01), Plas
patent: 4297632 (1981-10-01), Glaser et al.
"Lighting System, Airport Approach, Condenser Discharge", Sylvania Electric Products, Inc., Instruction Book.

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