Novel light level given device of light emitting diode (LED) navigation light

Abstract

The invention provides a novel light level given device of a light emitting diode (LED) navigation light. The device comprises a dimmer, an isolation transformer and a light intensity controller; an output end of the dimmer is sequentially connected with the isolation transformer and the light intensity controller in series; the light intensity controller is connected with an LED lamp; the dimmer outputs an alternating current of which the frequency corresponds to the frequency of a light level given signal; the alternating current runs through the isolation transformer and then is input to the light intensity controller; the light intensity controller obtains the light level given signal output by the dimmer by detecting the frequency of the input alternating current and controls the light intensity of the LED lamp according to the obtained light level given signal. The light level given signal is hidden in the frequency of the alternating current by the dimmer, and the light intensity controller detects the frequency of the alternating current of an auxiliary edge of the isolation transformer to obtain the light level given signal given by the dimmer.

Description

technical field [0001] The invention relates to the technical field of light source control, in particular to a novel light level setting device for LED navigation lights. Background technique [0002] Navigation light equipment is an important airport facility that provides orientation guidance, circling guidance, approach slope, final approach, landing information, ground taxi guidance and take-off guidance for aircraft, and is directly related to flight safety. At present, the incandescent lamps mainly used at home and abroad have short bulb life and frequent product replacement. Therefore, it is of great significance to develop navigation lights based on LED energy-saving light sources, which not only save energy but also greatly extend the life of bulbs. [0003] In the LED navigation light system, how to reliably send the light level given signal to the LED light intensity controller is very important. The existing method is to collect and process the secondary curren...

AI Technical Summary

Problems solved by technology

The existing method is to collect and process the secondary current of the isolation transformer, for example, collect the amplitude value of the secondary current of the isolation transformer to obtain the effective value of the current, and then identify the given light level signal, but the cost of this method is relatively high. And it is unreliable, because the current effective value of the secondary current of the isolation transformer is not easy to obtain, and the obtained effective value is also unreliable, which will affect the final control of the light intensity control of the LED navigation lights, and affect the normal flight and landing of the aircraft

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