US 11,991,804 B2
Automatic length detection lighting device
Jorge Gabriel Squillace, Eindhoven (NL); and Dzmitry Viktorovich Aliakseyeu, Eindhoven (NL)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 17/926,329
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed May 20, 2021, PCT No. PCT/EP2021/063453
§ 371(c)(1), (2) Date Nov. 18, 2022,
PCT Pub. No. WO2021/239570, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 20176221 (EP), filed on May 25, 2020.
Prior Publication US 2023/0199929 A1, Jun. 22, 2023
Int. Cl. H05B 45/10 (2020.01); H05B 45/12 (2020.01); H05B 45/40 (2020.01)
CPC H05B 45/40 (2020.01) [H05B 45/12 (2020.01)] 15 Claims
OG exemplary drawing
 
1. A lighting device for detecting a lighting module count of the lighting device comprising:
a lighting unit comprising a plurality of lighting modules and a termination module for terminating the light unit, which is in a form of a physical attachment, wherein the plurality of lighting modules and the termination module are connected in parallel or in series, and each lighting module comprises a light source for emitting light; and
a controller for controlling the lighting unit, wherein the plurality of lighting modules and the termination module are independently controllable by the controller;
a power supply unit for providing a drive voltage to the lighting unit; characterized in that the termination module is configured to have an electrical characteristic different from that of each lighting module, such that an amount of current drawn by the termination module in response to an applied drive voltage differs from that drawn by each lighting module in response to the applied drive voltage;
wherein the controller is configured to:
activate at least one module of the lighting unit individually according to a preselected addressing scheme;
measure a change of a current passing through the lighting unit while activating the at least one module;
detect the termination module based on the measured change of the current; and
determine the lighting module count of the lighting unit upon detection of the termination module.