Method for the operation and expansion of a network of lights Described herein is method for the operation and the expansion of a network of lights, each light in the network including a control module which is assigned to a group, each control module being in communication with a group controller as well as control modules in the same group. The network can be expanded by installing new lights with their associated control modules (19), and each new control module scans its environment and transmits environmental information to a central server (20) where the environmental information is analysed and the new control modules are allocated into groups (21). After allocation to a group in which control modules may be moved from one group to another or a new group is formed, the new control modules are available for normal operation. This process is repeated for each new light and associated control module.

The invention relates to a disinfection system for a motorized vehicle comprising at least one disinfectant light emitting device mounted in a vehicle cabin and arranged to emit disinfectant light rays towards internal surfaces of the vehicle cabin so as to sanitize them, first sensor means adapted to sense the presence of a human or an animal inside the vehicle cabin and providing a first sensing signal indicating no presence, and a controller operatively connected to the at least one disinfectant light emitting device and the first sensor means, the controller receiving the first sensing signal, wherein the controller is adapted to operate the at least one disinfectant light emitting device in response to the first sensing signal.

A resistor bypass circuit for a series lighting circuit includes a plurality of serially connected light sources and a bypass resistor being connected in parallel with at least one of the respective light sources, each respective light source being low wattage and being capable operating on a one hundred percent duty cycle as desired.

A resistor bypass circuit for a series lighting circuit includes a plurality of serially connected light sources and a bypass resistor being connected in parallel with at least one of the respective light sources, each respective light source being low wattage and being capable operating on a one hundred percent duty cycle as desired.

The subject disclosure relates to solutions for testing lighting systems and in particular, for verifying lighting system operability in the event of a power failure. A process of the disclosed technology can include steps for receiving an interrupt command, toggling an interrupt relay in response to the interrupt command, and measuring one or more lighting characteristics of the lighting array to determine if the second power supply can power the lighting array. Systems and machine-readable media are also provided.

A resistor bypass circuit for a series lighting circuit includes a plurality of serially connected light sources and a bypass resistor being connected in parallel with at least one of the respective light sources, each respective light source being low wattage and being capable operating on a one hundred percent duty cycle as desired.

A resistor bypass circuit for a series lighting circuit includes a plurality of serially connected light sources and a bypass resistor being connected in parallel with at least one of the respective light sources, each respective light source being low wattage and being capable operating on a one hundred percent duty cycle as desired.

Example embodiments relate to systems for checking a luminaire status and methods thereof. One embodiment includes a method for checking a status of a luminaire using a mobile terminal in a vicinity of the luminaire. The mobile terminal includes a sensing means, a memory, and a communication means. The method includes obtaining, by the mobile terminal, an identifier of the luminaire. The method also includes determining, based on the obtained identifier of the luminaire, a measure of the status of the luminaire to be acquired. Additionally, the method includes acquiring, by the sensing means of the mobile terminal, the measure of the luminaire status. Further, the method includes storing, in the memory of the mobile terminal, data about the acquired measure of the luminaire status. The data is associated to the identifier of the luminaire.

A lighting device circuit comprising: a reference LED string, a mirror LED string coupled in parallel to the reference LED string, an operational amplifier based current mirror circuit coupled to the reference LED string and to the mirror LED string, and a window comparator circuit that includes only a single input that is coupled to a fault sense node. The fault sense node directly connects to a drain node of a transistor within the operational amplifier based current mirror and a LED within the mirror LED string.

A lighting device circuit comprising: a reference LED string, a mirror LED string coupled in parallel to the reference LED string, an operational amplifier based current mirror circuit coupled to the reference LED string and to the mirror LED string, and a window comparator circuit that includes only a single input that is coupled to a fault sense node. The fault sense node directly connects to a drain node of a transistor within the operational amplifier based current mirror and a LED within the mirror LED string.