US 12,408,252 B1
Sequential motion-responsive modular lighting system with directional communication and low-power operation
Radu Postolaki, Dayton, MN (US)
Assigned to Radu Postolaki, Dayton, MN (US)
Filed by Radu Postolaki, Dayton, MN (US)
Filed on May 10, 2025, as Appl. No. 19/204,529.
Int. Cl. H05B 45/30 (2020.01); H05B 45/325 (2020.01); H05B 47/11 (2020.01); H05B 47/13 (2020.01); H05B 47/16 (2020.01)
CPC H05B 47/13 (2020.01) [H05B 45/325 (2020.01); H05B 47/11 (2020.01); H05B 47/16 (2020.01)] 17 Claims
OG exemplary drawing
 
1. A modular lighting system comprising
a plurality of lighting modules, wherein each lighting module comprises:
a battery-powered microcontroller;
a battery-voltage-monitoring circuit configured to measure a voltage level of a battery that powers the lighting module;
a motion sensor;
an ambient light sensor;
a main light-emitting-diode (LED) array and a warning indicator LED;
an infrared (IR) transmitter and an IR receiver;
a universal synchronous/asynchronous receiver-transmitter (USART) interface; and
at least one general-purpose input/output (GPIO) pin;
wherein each lighting module is configured to:
(a) monitor ambient light levels using the ambient light sensor;
(b) detect motion using the motion sensor;
(c) upon detecting motion while ambient light is below a predefined threshold, transmit a wake-up pulse via the IR transmitter;
(d) after transmitting the wake-up pulse, transmit a pulse-code-modulated (PCM) signal via the IR transmitter, the PCM signal including the lighting module's unique identification and chain address information;
(e) measure the battery voltage using the battery-voltage-monitoring circuit and compare the measured value to at least one predefined threshold;
(f) activate the main LED array of the same lighting module using pulse-width modulation (PWM) for a defined predefined ON-time duration when the measured battery voltage is above the minimum operating threshold; and
(g) after the ON-time duration expires, deactivate the main LED array of the same lighting module by dimming the LED array using PWM after the ON-time duration expires.