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US 7,742,161 B2Granted
Process and device for monitoring the illumination of lamp bulbs
AssigneeAirbus France
InventorMarie-Anne De Smet
Life of this patent
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Abstract
A device for measuring the illumination of a light bulb wherein it has a sensor for measuring the illumination of the bulb and a device for measurement and comparison of the value of illumination of the bulb to at least one threshold.
Claims8
A device for measuring the illumination of an aircraft landing beacon light bulb, said device having a sensor for measuring the illumination of the bulb and a measurement and comparison device for measuring and comparing the value of illumination of the bulb to at least one threshold,
- wherein the measurement sensor is locked onto a specific wavelength representative of the behavior of the bulb over time, said wavelength being the predominant illumination wavelength of the bulb according to the color temperature of the bulb,
- wherein the device comprises means for determining a stabilization time of said bulb in order to begin the measurement after the warm-up time of said bulb,
- wherein the measurement and comparison device is configured to measure the illumination of the bulb by comparing the measured value to an average stabilized value (EN),
- wherein the at least one threshold is defined relative to the average stabilized value,
- and wherein the device includes an alarm that is triggered when the illumination value of the bulb passes above the at least one threshold.
2 more elements
A process for tracking the illumination of aircraft landing beacon light bulbs comprising:
- measuring the illumination of said bulbs in a stabilized phase at a predominant wavelength of the bulb;
- comparing the measured value to a limit value;
- triggering an alarm when the illumination value of the bulb passes the limit value;
- and
- measuring the illumination of the bulbs after a warm-up and stabilization time of said bulbs,
- wherein measuring the illumination of said bulbs comprises comparing the measured value to an average stabilized value (EN),
- and wherein the limit value is defined relative to the average stabilized value.
4 more elements
Dependencies are inferred from the claim text.