LED-based lighting control network communication
An LED based illumination device includes a receiver and a transmitter for communications adhering to a lighting control communications protocol and a high speed communications protocol. The LED based illumination device may be part of a lighting control network, wherein the data transmission rate of the high speed communications protocol is more than twice that of the lighting control communications protocol. The lighting control network may be coupled to a digital communications gateway, including a digital communications interface configured to be coupled to a network operating in accordance with an internet protocol and a lighting control network interface coupled to the lighting control network. A processor determines a summary status value of the LED based illumination device based on information stored in memory of the digital communications gateway. The digital communications gateway may periodically transmit the time of day to the LED based illumination device over the lighting control network.
1. An LED based illumination device, comprising:
a receiver operable to receive a first communication over a pair of conductors and a second communication over the pair of conductors, wherein the first communication adhering to a lighting control communications protocol contains lighting control signals and the second communication adhering to a high speed communications protocol does not contain lighting control signals; and
a transmitter operable to transmit a third communication and a fourth communication over the pair of conductors, the third communication adhering to the lighting control communications protocol contains lighting control signals and the fourth communication adhering to the high speed communications protocol does not contain lighting control signals, wherein the LED based illumination device is configured to be part of a lighting control network, wherein a data transmission rate of the high speed communications protocol is more than twice a data transmission rate of the lighting control communications protocol.
2. The LED based illumination device of claim 1 , wherein the first communication is received simultaneously with the second communication.
3. The LED based illumination device of claim 1 , wherein the second communication is received when the lighting control network is idle.
4. The LED based illumination device of claim 3 , wherein a first conductor of the pair of conductors is coupled to a second conductor of the pair of conductors before the second communication is received.
5. The LED based illumination device of claim 1 , further comprising:
a wireless communications device configured to receive an amount of data from a device external to the lighting control network, and wherein the amount of data is communicated from the LED based illumination device to a device coupled to the pair of conductors.
6. The LED based illumination device of claim 5 , wherein the wireless communications device is a short range radio subsystem that complies with IEEE 802.15.4 standard.
7. The LED based illumination device of claim 5 , wherein the wireless communications device is a radio subsystem that complies with IEEE 802.11 standard.
8. The LED based illumination device of claim 5 , wherein the device coupled to the pair of conductors is a digital communications gateway.
9. The LED based illumination device of claim 1 , wherein the lighting control communications protocol is a digital addressable lighting interface (DALI) protocol.
10. The LED based illumination device of claim 1 , wherein the lighting control signals in the first communication comprises a request for one or more parameter values of the LED based illumination device, and the lighting control signals in the third communication comprises a response with the one or more parameter values.