SYSTEM AND METHOD FOR DETECTING FILAMENT BLOWNOUT OF AIRPORT LIGHT

摘要

PROBLEM TO BE SOLVED: To provide a method for detecting filament blownout of an airport light smoothly by improving the communication characteristics of a power line channel while realizing reduction in size of a slave station.

SOLUTION: In the method for detecting filament blownout of an airport light 4 connected in series with a constant current unit 5 by power line carrier communication between a key station 2 and a slave station 3, the series lighting circuit 200 of the light 4 is connected with a resonance circuit 8 and impedance of the resonance circuit 8 is varied selectively. Impedance of the resonance circuit 8 is set such that communication state of the communication line of power lines 10 and 11 being used for power line carrier communication between the key station 2 and the slave station 3 is optimized.

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