US Patent No. 9,936,567

LED ILLUMINATION SYSTEM AND METHOD FOR CONTROLLING THE SAME


Patent No. 9,936,567
Issue Date April 03, 2018
Title Led Illumination System And Method For Controlling The Same
Inventorship Eunseok Seo, Seoul (KR)
Assignee SAMJIN LND CO., LTD., Hwaseong-si (KR)

Claim of US Patent No. 9,936,567

1. An LED illumination system comprising:a plurality of LED lamps, each LED lamp comprising:
an LED array including one or more LED elements that interoperate with input power and emit light;
a power management unit that controls supplied power so that power is input to the LED array;
a control unit that controls the power management unit to control an operation of the LED array in response to a signal input set by a user through a user terminal; and
a wireless communication module that transmits a received wireless communication signal to the control unit and transmits information received from the control unit in the form of a wireless communication signal,
wherein the wireless communication modules of the LED lamps form mesh nodes for constituting a wireless mesh network,
a bridge mode of at least one of the mesh nodes is enabled, the bridge mode being dynamically configured according to a distance to the user terminal and the mesh node's own traffic, one of the mesh nodes having the enabled bridge mode operating as a bridge node, whereby the bridge node needs not to be set at a specific position and an installation of the LED illumination system is facilitated, and the wireless communication modules in the wireless mesh network quickly respond to a network change and dynamically constitute the bridge node optimized based on autonomous communication, so as to enable smooth communication with the user terminal without regard to nodes in relation to newly added or removed LED lamps,
when a control signal is received from the user terminal, each mesh node having the enabled bridge mode transmits rank information for connection to the user terminal corresponding to a distance to the user terminal and the each mesh node's own traffic,
the each mesh node compares rank information received from a neighboring mesh node having the enabled bridge mode with the each mesh node's own rank information and generates an order of priority for connection to the user terminal,
the mesh node with a lower order of priority excludes itself from the rank for connection to the user terminal, and
the mesh node with a highest order of priority operates as the bridge node for connection between the user terminal and the wireless mesh network,
wherein the bridge mode of the mesh nodes is rearranged considering a position of the mesh node operating as the bridge node, whereby a lightweight protocol is achieved for an efficient communication operation within the wireless mesh network, and a control command for the each LED lamp is performed with minimum delay.