Abstract: A system and method for determining vehicle position uses light based communication (LBC) signals and a received signal strength indicator (RSSI) to determine the vehicle position. Each vehicle includes a LBC system having an array of transmitting light emitting diodes (LEDs) and an array of receiver photodiodes for transmitting and receiving pulsed light binary messages. Each LBC system has a controller coupled to the transmitter diodes and receiver diodes. The controller includes a vehicle communication module that may be executed by a processor to determine the distance. The processor models a first distance between a first transmitting LBC system and a first receiving LBC system, then models a second distance between a second transmitting LBC system and the first receiving LBC system, and then determines the distance between the first vehicle and the second vehicle using trilateration of the first distance and the second distance.

Abstract: A connected lighting fixture network system has a plurality of multi-channel lighting fixtures. Each lighting fixture (device) has a plurality of services that reside within an application layer of the device. A controller is coupled to the device and configured to send query and command message to the device and to receive reply messages from the device. One service available to the device is a lighting command and control service. The device is configured to receive a query message from the controller. The controller is configured to generate a lighting control and command message, which can include a channel illumination field (CIF) and an illumination payload. The CIF indicates the channels of the device to be commanded based on the status of the channels received in the first reply message. The illumination payload indicates the intended illumination level for the corresponding channel.

Abstract: A system and method for determining vehicle position uses light based communication (LBC) signals and a received signal strength indicator (RSSI) to determine the vehicle position. Each vehicle includes a LBC system having an array of transmitting light emitting diodes (LEDs) and an array of receiver photodiodes for transmitting and receiving pulsed light binary messages. Each LBC system has a controller coupled to the transmitter diodes and receiver diodes. The controller includes a vehicle communication module that may be executed by a processor to determine the distance. The processor models a first distance between a first transmitting LBC system and a first receiving LBC system, then models a second distance between a second transmitting LBC system and the first receiving LBC system, and then determines the distance between the first vehicle and the second vehicle using trilateration of the first distance and the second distance.

Abstract: A system and method for determining vehicle position uses light based communication (LBC) signals and a received signal strength indicator (RSSI) to determine the vehicle position. Each vehicle includes a LBC system having an array of transmitting light emitting diodes (LEDs) and an array of receiver photodiodes for transmitting and receiving pulsed light binary messages. Each LBC system has a controller coupled to the transmitter diodes and receiver diodes. The controller includes a vehicle communication module that may be executed by a processor to determine the distance. The processor models a first distance between a first transmitting LBC system and a first receiving LBC system, then models a second distance between a second transmitting LBC system and the first receiving LBC system, and then determines the distance between the first vehicle and the second vehicle using trilateration of the first distance and the second distance.

Abstract: A connected lighting fixture network system has a plurality of multi-channel lighting fixtures that communicate over a network. Each lighting fixture (device) may access a plurality of services that reside within an application layer of the device, or on a server accessible to the device. A controller is coupled to the device and configured to send query and command messages to the device and to receive reply messages from the device. A query message from the controller can request information about the device. In response to receiving the reply message, the controller can generate a command message and send the command message to the device. The services available to the device may include network discovery, device health, device status, software versioning, and lighting command and control.

Abstract: A system and method for determining vehicle position uses light based communication (LBC) signals and a time-of-flight (TOF) pulse. Each vehicle includes a LBC system having light emitting diodes (LEDs) and receiver photodiodes capable of sending and receiving pulsed light binary messages. The LBC system may also include a TOF transceiver for sending and receiving TOF pulses, or the transmitter and receiver diodes may be used to send and receive TOF pulses. Each LBC system has a controller coupled to the transmitter diodes and receiver diodes (and the TOF transceiver when present). The controller includes a processor configured to determine the distance between vehicles. Optical characteristics are used to discern relative angle, a header is used to determine relative orientation, and the time-of-flight is used to determine distance, which together may be used by the processor to determine the relative location between transmitting vehicle and the receiving vehicle.

Abstract: A connected lighting fixture network system has a plurality of multi-channel lighting fixtures. Each lighting fixture (device) has a plurality of services that reside within an application layer of the device. A controller is coupled to the device and configured to send query and command message to the device and to receive reply messages from the device. One service available to the device is a lighting command and control service. The device is configured to receive a query message from the controller. The controller is configured to generate a lighting control and command message, which can include a channel illumination field (CIF) and an illumination payload. The CIF indicates the channels of the device to be commanded based on the status of the channels received in the first reply message. The illumination payload indicates the intended illumination level for the corresponding channel.

Abstract: A connected lighting fixture network system has a plurality of multi-channel lighting fixtures that communicate over a network. Each lighting fixture (device) may access a plurality of services that reside within an application layer of the device, or on a server accessible to the device. A controller is coupled to the device and configured to send query and command messages to the device and to receive reply messages from the device. A query message from the controller can request information about the device. In response to receiving the reply message, the controller can generate a command message and send the command message to the device. The services available to the device may include network discovery, device health, device status, software versioning, and lighting command and control.

Abstract: A system and method for determining vehicle position uses light based communication (LBC) signals and a time-of-flight (TOF) pulse. Each vehicle includes a LBC system having light emitting diodes (LEDs) and receiver photodiodes capable of sending and receiving pulsed light binary messages. The LBC system may also include a TOF transceiver for sending and receiving TOF pulses, or the transmitter and receiver diodes may be used to send and receive TOF pulses. Each LBC system has a controller coupled to the transmitter diodes and receiver diodes (and the TOF transceiver when present). The controller includes a processor configured to determine the distance between vehicles. Optical characteristics are used to discern relative angle, a header is used to determine relative orientation, and the time-of-flight is used to determine distance, which together may be used by the processor to determine the relative location between transmitting vehicle and the receiving vehicle.

Abstract: A system and method for determining vehicle position uses light based communication (LBC) signals and a received signal strength indicator (RSSI) to determine the vehicle position. Each vehicle includes a LBC system having an array of transmitting light emitting diodes (LEDs) and an array of receiver photodiodes for transmitting and receiving pulsed light binary messages. Each LBC system has a controller coupled to the transmitter diodes and receiver diodes. The controller includes a vehicle communication module that may be executed by a processor to determine the distance. The processor models a first distance between a first transmitting LBC system and a first receiving LBC system, then models a second distance between a second transmitting LBC system and the first receiving LBC system, and then determines the distance between the first vehicle and the second vehicle using trilateration of the first distance and the second distance.