A dimmable LED driver for visible light communication (VLC) based on LLC resonant DC-DC converter operating in burst mode
Why this work is in the frame
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Bibliographic record
Abstract
The main focus of this work is the integration of the communication and power management functions of a 80W smart LED module. The luminair provides high-efficiency programmable ambient lighting and can also act as a networked sensor node to gather a variety of local measurements, which leads to improved safety, comfort and efficiency in future lighting systems. A dimmable LED driver based on the LLC resonant dc-dc converter topology is proposed to implement an emerging communication scheme, Visible Light Communication (VLC). VLC capitalizes on the high switching-speed of LEDs and offers several compelling advantages over conventional RF and wired communication schemes. The digitally controlled LLC converter operates in constant-current burst mode, where the burst is sequenced to independently control the dimming and transmission the data using the Variable Pulse Position Modulation (VPPM) protocol. A receiver circuit is designed to demodulate and decode the visible light signal. The 50 kb/s system is successfully demonstrated on a 308 LED Luminair with a digitally controlled LLC dc-dc converter.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it