LED Lighting Communication Using BLE Advertising Packets
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Solution Overview
Problem
Existing LED illumination systems lack efficient communication methods for real-time status and control data, leading to congestion and delayed responses due to the overhead of establishing Bluetooth Low Energy (BLE) connections, which limits their ability to handle high-response rate lighting control effectively.
Innovation Solution
Implementing BLE advertising packets for communication of lighting control and status information, allowing for event-driven, aperiodic transmission that reduces power consumption and maintains responsiveness, while broadcasting messages to all devices simultaneously, thereby avoiding the need for exclusive point-to-point connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If BLE connection establishment is used for communication, then reliable point-to-point communication is achieved, but channel congestion and delayed responses occur due to overhead
Solution Approach 1:
The patent extracts the connection establishment overhead from the communication process by using BLE advertising packets that can carry data without requiring a formal connection. The advertising packet structure is modified to include lighting control commands and status information, allowing data transmission to be separated from the connection setup process, thereby reducing latency and channel congestion.
Solution Approach 2:
The communication protocol is segmented into connectionless advertising packet transmission for time-sensitive data and connection-based communication for non-critical data. This segmentation allows critical lighting control commands to be transmitted immediately via advertising packets without waiting for connection establishment, while maintaining reliability for less time-sensitive communications.
2Use of energy by moving object
If periodic transmission intervals are used, then power consumption is reduced, but responsiveness to time-sensitive commands deteriorates
Solution Approach 1:
The transmission interval is made dynamic rather than fixed. The system transitions from periodic transmission to event-driven transmission, where advertising packets are sent immediately when lighting control events occur. This dynamic approach allows the system to consume power only when necessary for communication, while maintaining instant responsiveness to time-sensitive commands.
Solution Approach 2:
The system prepares advertising packet templates in advance with predefined structures for different types of lighting control commands and status information. This preliminary preparation allows immediate transmission when events occur, eliminating the need to construct packets in real-time and enabling fast response without continuous power consumption.
3Reliability
If point-to-point connections are established, then dedicated communication channels are created, but system complexity increases due to connection management overhead
Solution Approach 1:
The BLE advertising packet mechanism is made multi-functional to serve both traditional advertising purposes and lighting control communication. By encoding lighting control commands, status information, and acknowledgments within the existing advertising packet structure, the system eliminates the need for separate dedicated communication channels, reducing overall system complexity while maintaining reliable communication.
Data Source
AI summary
A Light Emitting Diode (LED) based illumination device may include a Light Control and Data Interface Module (LCDIM). The LCDIM may include an LED driver that supplies electrical power to the LED based light engine of the LED based illumination module. The LCDIM may include a radio frequency (RF) transmitter that communicates a signal indicative of an operational status of the LED based light engine to another device on a wireless communications network using a Bluetooth Low Energy (BLE) advertising packet. Additionally, in a lighting control system, a light control device may include a RF transmitter to communicate a signal indicative of a lighting control command to the LCDIM using a BLE advertising packet.