LED light signal

摘要

An LED light signal, in particular an LED railway light signal, contains a signal generator for generating varicolored light spots. The LEDs are embodied as multicolor LEDs, in particular RGB LEDs—Red/Yellow/Blue LEDs. In order to be able to utilize the possibilities for color mixing and thus for realizing a large number of color variants for safety-relevant signaling technology, the signal generator has at least one optical sensor for monitoring a color locus and a light intensity reliably in terms of signaling technology.

主权项

1. An LED light signal, comprising:
a signal generator for generating variously colored light spots, said signal generator having LEDs embodied as multicolor LEDs, said signal generator having at least one optical sensor for monitoring a color locus and a light intensity reliably in terms of signaling technology; a sensor amplifier; an A/D converter; a signal box; a digital evaluation device, said optical sensor connected via said sensor amplifier and said A/D converter to said digital evaluation device for determining the color locus and the light intensity, said digital evaluation device generating a feedback signal dependent on environmental conditions, including an ambient temperature, and forwarding the feedback signal to said signal box, said signal box generating an activation signal to be applied to said signal generator; and means for comparing the feedback signal with the activation signal.