US 12,232,238 B2
Sound ranging and luminaire localization in a lighting system
Carlos Silva, Paredes (PT); Kari Severinkangas, Vila Nova de Gaia (PT); Antonio Sousa, Valbom Gondomar (PT); Jorge Filipe, Oporto (PT); and Joao Azevedo, Braga (PT)
Assigned to Tridonic Portugal Unipessoal LDA, Villa Nova de Gaia (PT)
Appl. No. 18/707,900
Filed by Tridonic Portugal, Unipessoal LDA, Villa Nova de Gaia (PT)
PCT Filed Dec. 14, 2022, PCT No. PCT/EP2022/085760
§ 371(c)(1), (2) Date May 7, 2024,
PCT Pub. No. WO2023/110967, PCT Pub. Date Jun. 22, 2023.
Claims priority of application No. 21215029 (EP), filed on Dec. 16, 2021.
Prior Publication US 2024/0422886 A1, Dec. 19, 2024
Int. Cl. H05B 47/19 (2020.01); H05B 47/155 (2020.01)
CPC H05B 47/19 (2020.01) [H05B 47/155 (2020.01)] 19 Claims
OG exemplary drawing
 
1. A method for determining locations of luminaires (2, 3, 13) of a lighting system (1),
wherein each of the luminaires (2, 3, 13) is configured to communicate with at least one other of the luminaires (2, 3, 13), and the method comprises:
performing a background noise analysis for sound frequencies;
selecting a first luminaire (2) from the luminaires (2, 3, 13) of the lighting system (1);
providing a first signal (22) to the selected first luminaire (2);
transmitting (S21), by the selected first luminaire (2) in response to receiving the first signal (22), a wireless ranging activation signal (23) to second luminaires (3) of the lighting system (1), wherein the second luminaires (3) are luminaires (2, 3, 13) of the lighting system (1) that are in direct wireless communication with the first luminaire (2);
starting (S26), by each of the second luminaires (3), a timer in response to receiving (S22) the wireless ranging activation signal (23);
transmitting (S27), by the first luminaire (2), a sound signal (24) based on a result of the performed background noise analysis after a predetermined delay time interval since transmitting (S21) the wireless ranging activation signal (23) elapsed;
receiving (S28), by each of the second luminaires (3), the sound signal (24);
calculating (S29), by each of the second luminaires (3), a time interval based on a first time of starting the timer and a second time of receiving the sound signal (24);
generating (S30), by each of the second luminaires (3), a second signal (25) including the calculated time interval and transmitting (S30) the second wireless signal (25) to a device defined in the wireless ranging activation signal (23);
determining locations of the luminaires (2, 3, 13) of the lighting system (1) based on the calculated time intervals received in the second signals (25).