MULTIPLEXED ULTRA-LOW-POWER LED LUMINAIRE

摘要

The present invention relates to a luminaire based on the same optical principle as the cinema, in which only one image is presented at any given instant of time but the image appears to be in constant movement. According to the invention, each LED lights up simultaneously for an instant of time in a sequential manner, as with television screens. The LED luminaire of the invention includes a configuration of electronic elements in a circuit which controls the lighting of the LED array and which also includes a PIC microcontroller, a CMOS multiplexer and an operational amplifier that can be used to improve the power consumption of the luminaire, lighting control and the lighting quality of the LED luminaire.

主权项

1. An ultra-low-power luminaire powered by between 6 and 15 V (Vss) comprising
an LED matrix with anodes in columns and cathodes in rows; a microcontroller that controls the multiplexing cycle; a voltage regulator that provides a voltage for the microcontroller; Control In input and output (clk) lines that connect to the luminaire and that enable the different display patterns of the luminaire to be controlled; a decade counter (CMOS) and a CMOS NOT gate array that control the power of the LED matrix; a frequency-to-voltage converter (FVC) that controls the CMOS and CMOS NOT power supply; wherein the microcontroller receives information from the control in input line and supplies information (signal) to the frequency-to-voltage converter (FVC), to CMOS and to CMOS NOT, and the FVC provides a supply voltage as a function of the frequency of the microcontroller to the CMOS and CMOS NOT circuits, and wherein the frequency between the microcontroller and the FVC is ten times the initial frequency and in this state the FVC delivers a value close to the power supply voltage (Vss) to the CMOS and CMOS NOT.