CLEO: 2014, STu3M.5. (2001). 2009. Interruption of the guard beams triggers a safety system which blocks the charging beam.Mark Stone/University of Washington, “The guard beams are able to act faster than our quickest motions because those beams are reflected back to the emitter at the speed of light,” said Gollakota. Billy Hurley, Digital Editorial Manager . (2017). 2016. Hal E Bennett. Using a laser to wirelessly charge a smartphone safely across a room. Yunxin Liu, Zhen Qin, and Chunshui Zhao. For more information, contact the team at laserpower@cs.washington.edu. Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, M. C. Achtelik, J. Stumpf, D. Gurdan, and K. M. Doth. The team created a way for a narrow, invisible beam to charge a phone from across the room and at a speed just as fast as the modern USB cable. Taysir Nayfeh, Brian Fast, Daniel Raible, Dragos Dinca, Nick Tollis, and Andrew Jalics. To manage your alert preferences, click on the button below. Four low-powered guard beams are emitted from ports surrounding the guard beam. A team from the University of Washington has demonstrated how lasers could be used to charge a device from across the room. In Private communication. NASA. [n. d.]. The high-powered guard beam is emitted from the central port. In Proceedings of the ACM SIGCOMM 2013 Conference on SIGCOMM (SIGCOMM ‘13). University of Washington students have figured out a secure way to charge a smartphone with almost-infrared lasers. Demonstration of eye-safe (1550 nm) terrestrial laser power beaming at 30 m and subsequent conversion into electrical power using dedicated photovoltaics. In 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC). Towards Autonomously-Powered CRFIDs. Quasistatic Cavity Resonance for Ubiquitous Wireless Power Transfer. “In addition to the safety mechanism that quickly terminates the charging beam, our platform includes a heatsink to dissipate excess heat generated by the charging beam,” said Majumdar, who is also a researcher in the UW Molecular Engineering & Sciences Institute. Standard. ACM, New York, NY, USA, 1515--1525. https://doi.org/10.1145/2858036.2858580. https://doi.org/10.1145/2716281.2836089, Wibotic. 2017. 22 February 2018. 1--4. https://doi.org/10.1109/WMCaS.2013.6563551, A. Sahai and D. Graham. 2017. Using a Laser to Wirelessly Charge a Smartphone Safely Across a Room March 15, 2018 by Paul Shepard Although mobile devices such as tablets and smartphones let us communicate, work and access information wirelessly, their batteries must still be charged by plugging them in to an outlet. Engineers at the University of Washington have for the first time developed a method to safely charge a smartphone wirelessly using a laser. Safety of Laser Products. 2000. © 2021 University of Washington | Seattle, WA, Using a laser to wirelessly charge a smartphone safely across a room, Proceedings of the Association for Computing Machinery on Interactive, Mobile, Wearable & Ubiquitous Technologies, Molecular Engineering & Sciences Institute, Department of Electrical & Computer Engineering, Paul G. Allen School of Computer Science & Engineering, In pandemic milestone, UW brings COVID-19 vaccines to frontline health care workers, Bait and switch: Mislabeled salmon, shrimp have biggest environmental toll, UW announces Maggie Walker Deanship in the College of the Environment. 2015. The ACM Digital Library is published by the Association for Computing Machinery. Researchers developed a cell that can power a smartphone using energy from laser beams – and it charges just as quickly as a direct connection with a USB cable. 2011. IEC 60825-1 2001. Researchers have long speculated that a device like this might make wires and charging cables a thing of the past, allowing people to beam energy invisibly across a room to … To ensure that the charging beam does not overheat the smartphone, the team also placed thin aluminum strips on the back of the smartphone around the power cell. MTP2955. IEEE, 1--5. ATS-6000-C1-RO. Using a laser to wirelessly charge a smartphone safely across a room Date 2018-02-25 Category News Tags UW.Edu “ Although mobile devices such as tablets and smartphones let us communicate, work and access information wirelessly, their batteries must still be charged by plugging them in to an outlet. As the team reports in a paper published online in December in the Proceedings of the Association for Computing Machinery on Interactive, Mobile, Wearable & Ubiquitous Technologies, a narrow, invisible beam from a laser emitter can deliver charge to a smartphone sitting across a room - and can potentially charge a smartphone as quickly as a standard USB cable. (2009). “As a result, when the guard beam is interrupted by the movement of a person, the emitter detects this within a fraction of a second and deploys a shutter to block the charging beam before the person can come in contact with it.”. http://peltiermodules.com/peltier.datasheet/TEC1-12706.pdf. Check out the GeekWire Summit lineup A smartphone is powered up using a laser-based charging system. Next to each guard beam port are clear photodiodes, which detect the guard beams when they’re reflected back to the emitter by retroreflectors on the phone.Mark Stone/University of Washington. The generator is mounted on top of an aluminum heatsink. PLOS ONE 12, 2 (02 2017), 1--14. https://doi.org/10.1371/journal.pone.0169045. The charging laser and guard lasers are normally invisible to … http://wiki.seeedstudio.com/index.php?title=0.5w_Solar_Panel_55*70, Vamsi Talla, Bryce Kellogg, Benjamin Ransford, Saman Naderiparizi, Shyamnath Gollakota, and Joshua R. Smith. These strips act as a heatsink, dissipating excess heat from the charging beam and allowing the laser to charge the smartphone … Coherent Inc. 2017. Near-IR laser system safely charges a smartphone wirelessly from across a room This laser-based wireless charging system was created by University of Washington engineers. PDB-C156. In addition, the team custom-designed safety features — including a metal, flat-plate heatsink on the smartphone to dissipate excess heat from the laser, as well as a reflector-based mechanism to shut off the laser if a person tries to move in the charging beam’s path. In Proceedings of the 2016 ACM SIGCOMM Conference (SIGCOMM ‘16). Although mobile devices such as tablets and smartphones let us communicate, work and access information wirelessly, their batteries must still be charged by plugging them in to an outlet. In Proceedings of the 2014 ACM Conference on SIGCOMM (SIGCOMM ‘14). Power Beaming for Space-Based Electricity on Earth: Near-Term Experiments with Radars, Lasers and Satellites. Thomas J. Nugent, Jr. and Jordin T. Kare. Co-author is Rajalakshmi Nandakumar, a UW doctoral student in the Allen School. The wireless charging system created by University of Washington engineers. (2004). Engineers at the University of Washington have demonstrated the ability to charge a smartphone wireless from across a room using a laser. 2011. (Image Source; University of Washington) Scientists, including those of Indian origin, have developed a laser emitter that can safely charge a smartphone across a room as quickly as a standard USB cable. IEC 60950-1 (2005) 2005. RFID Sensor Networks with the Intel WISP. Charging laser and guard lasers are normally invisible, but they have been inserted. Standard. 2009. 1995. 1995. The UW team’s prototype laser emitter. The research was funded by the National Science Foundation, the Alfred P. Sloan Foundation and Google Faculty Research Awards. Using a laser to wirelessly charge a smartphone safely across a room. “The beam delivers charge as quickly as plugging in your smartphone to a USB port,” said co-lead author Elyas Bayati, a UW doctoral student in electrical engineering. DOD and Navy applications for laser power beaming. Concepts for wireless energy transmission via laser. 2017. Optical wireless power transmission at long wavelengths. To accomplish this, the team mounted a thin power cell to the back of a smartphone, which charges the smartphone using power from the laser. FingerIO: Using Active Sonar for Fine-Grained Finger Tracking. ... the back of a smartphone and hit it with a narrow laser … (2017). Ambient Backscatter: Wireless Communication out of Thin Air. This extension means that the emitter could be aimed at a wider charging surface, such as a counter or tabletop, and charge a smartphone placed anywhere on that surface. Ossia Inc. 2017. 2016. 2014. Thursday, November 26 2020. The blocking of the guard beams can be sensed quickly enough to detect the fastest motions of the human body, based on decades of physiological studies. 2014. Shane S. Clark, Jeremy Gummeson, Kevin Fu, and Deepak Ganesan. A narrow beam can deliver a steady 2W of power to 15 square-inch area from a distance of up to 4.3 meters, or about 14 feet. [n. d.]. James C Lin. Q. Liu, J. Wu, P. Xia, S. Zhao, W. Chen, Y. Yang, and L. Hanzo. https://doi.org/10.1364/CLEO_SI.2014.STu3M.5. SPIE Laser Power Beaming II Proceedings (1995). Design of a flexible high performance quadcopter platform breaking the MAV endurance record with laser power beaming. Share. TEC1-12706. Wireless power transmission experiment using an airship as relay system and a moveable rover as ground target for later planetary exploration missions. (2017). Tweet. 0.5W Solar panel. F Steinsiek, KH Weber, WP Foth, HJ Foth, and C Schafer. 2012. Laser diode- Red. https://www.adafruit.com/product/1054, Amir Arbabi, Yu Horie, and Andrei Faraon. Using a laser to wirelessly charge a smartphone safely across a room 20 February 2018, by James Urton The wireless charging system created by University of Washington engineers. In Computing, Communication and Networking Technologies (ICCCNT), 2014 International Conference on. (2017). To ensure that the charging beam does not overheat the smartphone, the team also placed thin aluminum strips on the back of the smartphone around the power cell. 2010. ([n. d.]). By James Urton, UW News. If you forgot your charger today, engineers from the University of Washington have a solution for you — and it’s lasers. Science 317, 5834 (2007), 83--86. https://doi.org/10.1126/science.1143254 arXiv:http://science.sciencemag.org/content/317/5834/83.full.pdf. E Hoffert, P Soukup, and M Hoffert. https://images-na.ssl-images-amazon.com/images/I/714s6fjypPS.pdf. These strips act … (2011), 804514-804514-8 pages. 164--170. https://doi.org/10.1109/ICSOS.2011.5783662. For example, the interlock of the MHGoPower LSM-010 laser has a … Powering the Next Billion Devices with Wi-fi. Charging Unplugged: Will Distributed Laser Charging for Mobile Wireless Power Transfer Work? IEEE Antennas and Propagation Magazine 48, 1 (2006), 157--159. 195. Copyright © 2021 ACM, Inc. Check if you have access through your login credentials or your institution to get full access on this article. Researchers mounted a thin power cell to the back of a smartphone, which charges the smartphone using power from the laser. Share . Home; UW Department of Electrical & Computer Engineering; Spotlights ; Using a laser to wirelessly charge a smartphone safely across a room. The guard beams deliver no charge to the phone themselves, but their reflection from the smartphone back to the emitter allows them to serve as a “sensor” for when a person will move in the path of the guard beam. They even harvested a small amount of this heat to help charge the smartphone — by mounting a nearly-flat thermoelectric generator above the heatsink strips. http://www.meadowlark.com/store/data_sheet/opticalshutter.pdf, Aaron N. Parks, Angli Liu, Shyamnath Gollakota, and Joshua R. Smith. Information technology equipment âĂŞ Safety. Charging a Smartphone Across a Room Using Lasers • 143:3 exposure time. Share. The team says that the method of charging … KA Unnikrishna Menon, Achyuta Gungi, and Balaji Hariharan. “But instead of plugging your phone in, you simply place it on a table.”, The UW team’s prototype heatsink assembly, which can be attached to the back of a smartphone, consists of a photovoltaic cell (silver square, top) attached to a thermoelectric generator (in white). Turbocharging Ambient Backscatter Communication. 2013. Using a laser to wirelessly charge a smartphone safely across a room. In Robotics and Automation (ICRA), 2012 IEEE International Conference on. (2011). “We have designed, constructed and tested this laser-based charging system with a rapid-response safety mechanism, which ensures that the laser emitter will terminate the charging beam before a person comes into the path of the laser.”, The University of Washington engineers behind the wireless charging system for mobile devices.Standing (left-to-right): Vikram Iyer, Shyam Gollakota, Elyas Bayati.Seated (left-to-right): Rajalakshmi Nandakumar, Arka Majumdar.Mark Stone/University of Washington. The charging beam is generated by a laser emitter that the team configured to produce a focused beam in the near-infrared spectrum. To accomplish this, the … ACM, New York, NY, USA, 619--630. https://doi.org/10.1145/2619239.2626312, Advanced Photonix. 2007. If you're trying to subscribe with a non-UW email address, please email uwnews@uw.edu for assistance. ACM, New York, NY, USA, 39--50. https://doi.org/10.1145/2486001.2486015. 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