Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.17865 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866908546210201600 |
|---|---|
| author | Carver, Charles J. Schwartz, Hadleigh Itagaki, Toma Englhardt, Zachary Liu, Kechen Manik, Megan Graciela Nauli Chang, Chun-Cheng Iyer, Vikram Plancher, Brian Zhou, Xia |
| author_facet | Carver, Charles J. Schwartz, Hadleigh Itagaki, Toma Englhardt, Zachary Liu, Kechen Manik, Megan Graciela Nauli Chang, Chun-Cheng Iyer, Vikram Plancher, Brian Zhou, Xia |
| contents | We present Phaser, a flexible system that directs narrow-beam laser light to moving robots for concurrent wireless power delivery and communication. We design a semi-automatic calibration procedure to enable fusion of stereo-vision-based 3D robot tracking with high-power beam steering, and a low-power optical communication scheme that reuses the laser light as a data channel. We fabricate a Phaser prototype using off-the-shelf hardware and evaluate its performance with battery-free autonomous robots. Phaser delivers optical power densities of over 110 mW/cm$^2$ and error-free data to mobile robots at multi-meter ranges, with on-board decoding drawing 0.3 mA ($97\%$ less current than Bluetooth Low Energy). We demonstrate Phaser fully powering gram-scale battery-free robots to nearly 2x higher speeds than prior work while simultaneously controlling them to navigate around obstacles and along paths. Code, an open-source design guide, and a demonstration video of Phaser is available at https://mobilex.cs.columbia.edu/phaser. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_17865 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Set Phasers to Stun: Beaming Power and Control to Mobile Robots with Laser Light Carver, Charles J. Schwartz, Hadleigh Itagaki, Toma Englhardt, Zachary Liu, Kechen Manik, Megan Graciela Nauli Chang, Chun-Cheng Iyer, Vikram Plancher, Brian Zhou, Xia Robotics Computer Vision and Pattern Recognition We present Phaser, a flexible system that directs narrow-beam laser light to moving robots for concurrent wireless power delivery and communication. We design a semi-automatic calibration procedure to enable fusion of stereo-vision-based 3D robot tracking with high-power beam steering, and a low-power optical communication scheme that reuses the laser light as a data channel. We fabricate a Phaser prototype using off-the-shelf hardware and evaluate its performance with battery-free autonomous robots. Phaser delivers optical power densities of over 110 mW/cm$^2$ and error-free data to mobile robots at multi-meter ranges, with on-board decoding drawing 0.3 mA ($97\%$ less current than Bluetooth Low Energy). We demonstrate Phaser fully powering gram-scale battery-free robots to nearly 2x higher speeds than prior work while simultaneously controlling them to navigate around obstacles and along paths. Code, an open-source design guide, and a demonstration video of Phaser is available at https://mobilex.cs.columbia.edu/phaser. |
| title | Set Phasers to Stun: Beaming Power and Control to Mobile Robots with Laser Light |
| topic | Robotics Computer Vision and Pattern Recognition |
| url | https://arxiv.org/abs/2504.17865 |