Researchers mounted a thin power cell to the back of a smartphone, which charges the smartphone using power from the laser. In Proceedings of the ACM SIGCOMM 2013 Conference on SIGCOMM (SIGCOMM ‘13). NASA. These strips act … Science 317, 5834 (2007), 83--86. https://doi.org/10.1126/science.1143254 arXiv:http://science.sciencemag.org/content/317/5834/83.full.pdf. In Robotics and Automation (ICRA), 2012 IEEE International Conference on. International Electrotechnical Commission. Summerer Leopold and Oisin Purcell. The key challenges in achieving this are multi-fold: delivering greater than a watt of power across the room, minimizing the exposure of the resulting high-power lasers to human tissue, and finally ensuring that the design meets the form-factor requirements of a smartphone and requires minimal instrumentation to the environment. Further, extensive characterization of our safety system shows that we can turn off our laser source much before a human moving at a maximum speed of 44 m/s can even enter the high-power laser beam area. (2004). 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. 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. (Shanghai) Co. 2001. http://www.wibotic.com/, Charging a Smartphone Across a Room Using Lasers, All Holdings within the ACM Digital Library. PDB-C156. The next generation of nano-scale optical devices are expected to operate with Gigahertz frequency, which could reduce the shutter’s response time to nanoseconds, added Majumdar. Home battery charging Charging a smartphone wirelessly across the room using a laser. 2016. Engineers at the University of Washington have for the first time developed a method to safely charge a smartphone wirelessly using a laser. International Electrotechnical Commission. 164--170. https://doi.org/10.1109/ICSOS.2011.5783662. 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. Resonant wireless power transfer to ground sensors from a UAV. The charging laser and guard lasers are normally invisible to the human eye, but red beams have been inserted in place of the guard beams for demonstration purposes. KA Unnikrishna Menon, Achyuta Gungi, and Balaji Hariharan. (2001). Our results show that we can deliver more than 2 W at ranges of 4.3 m and 12.2 m for a smartphone (25 cm2) and table-top form factor (100 cm2) receiver respectively. IEEE, 1--5. High intensity laser power beaming architecture for space and terrestrial missions. Using a laser to wirelessly charge a smartphone safely across a room. The safety system that shuts off the charging beam centers on low-power, harmless laser “guard beams,” which are emitted by another laser source co-located with the charging laser-beam and physically “surround” the charging beam. This paper presents a novel, and to the best of our knowledge, the first design, implementation and evaluation of an end-to-end power delivery system that satisfies all the above requirements. Wireless Power Transfer via Strongly Coupled Magnetic Resonances. 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. IEC 60950-1 (2005) 2005. http://www.usb.org/developers/docs/usb20_docs/, Monia Ghobadi, Ratul Mahajan, Amar Phanishayee, Nikhil Devanur, Janardhan Kulkarni, Gireeja Ranade, Pierre-Alexandre Blanche, Houman Rastegarfar, Madeleine Glick, and Daniel Kilper. The charging laser and guard lasers are normally invisible to the human eye, but red beams have been inserted in place of the guard beams for demonstration purposes.Mark Stone/University of Washington. But the emitter can be modified to expand the charging beam’s radius to an area of up to 100 square centimeters from a distance of 12 meters, or nearly 40 feet. In 8th ESA Workshop on Advanced Space Technologies for Robotics and Automation. 567. Four low-powered guard beams are emitted from ports surrounding the guard beam. The ACM Digital Library is published by the Association for Computing Machinery. J. Mukherjee, W. Wulfken, H. Hartje, F. Steinsiek, M. Perren, and S. J. Sweeney. Laser power for UAVs. Engineers at the University of Washington have for the first time developed a method to safely charge a smartphone wirelessly using a laser. Share . The charging beam is generated by a laser emitter that the team configured to produce a focused beam in the near-infrared spectrum. http://advancedphotonix.com/wp-content/uploads/PDB-C156.pdf, S. Raavi, B. Arigong, R. Zhou, S. Jung, M. Jin, H. Zhang, and H. Kim. The key challenges in achieving this are multi-fold: delivering greater than a watt of power across the room, minimizing the exposure of the resulting high-power lasers to human tissue, and finally ensuring that the design meets the form-factor requirements of a smartphone and requires minimal instrumentation to the environment. The researchers’ technology enables a laser emitter’s narrow, invisible beam to power up a smartphone from across the room — perhaps as quickly as a standard USB cable. 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. Bożena Smagowska and Małgorzata Pawlaczyk-Łuszczyńska. Advanced Thermal Solutions. By James Urton, UW News. If so, the pre-bedtime task of plugging in your smartphone, tablet or laptop may someday be replaced with a simpler ritual: placing it on a table. In 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC). The high-powered guard beam is emitted from the central port. For example, the interlock of the MHGoPower LSM-010 laser has a … 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. 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. Custom 3-D printed “retroreflectors” placed around the power cell on the smartphone reflect the guard beams back to photodiodes on the laser emitter. ... the back of a smartphone and hit it with a narrow laser … Power Beaming for Space-Based Electricity on Earth: Near-Term Experiments with Radars, Lasers and Satellites. NXP Semiconductors. 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. (2011), 804514-804514-8 pages. “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. 2013. 2009. (2004). 1074--1076. https://doi.org/10.1109/PVSC.2013.6744326, Rajalakshmi Nandakumar, Vikram Iyer, Desney Tan, and Shyamnath Gollakota. Information technology equipment âĂŞ Safety. USB 2.0 Standard. Using a laser to wirelessly charge a smartphone safely across a room. (2011). Planar Retroreflector, In CLEO: 2014. (2015). [n. d.]. If you're trying to subscribe with a non-UW email address, please email uwnews@uw.edu for assistance. 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. The researchers designed the laser emitter to terminate the charging beam when any object — such as part of a person’s body — comes into contact with one of the guard beams. ACM, New York, NY, USA, 619--630. https://doi.org/10.1145/2619239.2626312, Advanced Photonix. “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. Laser power beaming for defense and security applications. Engineers at the University of Washington have developed a method to safely charge a smartphone wirelessly — using a laser. To accomplish this, the … https://www.adafruit.com/product/1054, Amir Arbabi, Yu Horie, and Andrei Faraon. In Computing, Communication and Networking Technologies (ICCCNT), 2014 International Conference on. The entire assembly is only 8mm thick and 40mm wide.Mark Stone/University of Washington. “This acoustic localization system ensures that the emitter can detect when a user has set the smartphone on the charging surface, which can be an ordinary location like a table across the room,” said co-lead author Vikram Iyer, a UW doctoral student in electrical engineering. In Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems (CHI ‘16). RFID Sensor Networks with the Intel WISP. 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. 2008. These strips act as a heatsink, dissipating excess heat from the charging beam and allowing the laser to charge the smartphone for hours. 2006. Quasistatic Cavity Resonance for Ubiquitous Wireless Power Transfer. 2011. Towards Autonomously-Powered CRFIDs. But the genius researchers over at the University of Washington have developed a way to charge your phone from across the room using freakin’ laser beams! We use cookies to ensure that we give you the best experience on our website. http://energous.com/, USB Implementers Forum. https://doi.org/10.1117/12.886169, Meadowlark Optics. MTP2955. This is achieved by mounting a thin power cell to the back of a smartphone, which enables it to absorb power from the laser. 2016. TEC1-12706. 2017. The researchers programmed the smartphone to signal its location by emitting high-frequency acoustic “chirps.” These are inaudible to our ears, but sensitive enough for small microphones on the laser emitter to pick up. Billy Hurley, Digital Editorial Manager . A new IEEE standard for safety levels with respect to human exposure to radio-frequency radiation. In 2013 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS). Tweet. 5166--5172. https://doi.org/10.1109/IROS.2011.6094731, Adafruit. 2015. Taysir Nayfeh, Brian Fast, Daniel Raible, Dragos Dinca, Nick Tollis, and Andrew Jalics. ACM, New York, NY, USA, 1515--1525. https://doi.org/10.1145/2858036.2858580. http://peltiermodules.com/peltier.datasheet/TEC1-12706.pdf. The team says that the method of charging … Communication hardware, interfaces and storage. E Hoffert, P Soukup, and M Hoffert. PLOS ONE 12, 2 (02 2017), 1--14. https://doi.org/10.1371/journal.pone.0169045. Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, M. C. Achtelik, J. Stumpf, D. Gurdan, and K. M. Doth. More about Smartphone, Laser, Wireless, Charger further break news from phone Laser Wireless Charger Using a laser to wirelessly charge a phone significantly across a room In 2011 IEEE/RSJ International Conference on Intelligent Robots and Systems. Laser diode- Red. Thomas J. Nugent, Jr. and Jordin T. Kare. 195. In Proceedings of the 11th ACM Conference on Emerging Networking Experiments and Technologies (CoNEXT ‘15). In Solar Power from Space-SPS‘04, Vol. The UW team’s prototype laser emitter. 1995. New wireless charging tech juices your phone from across the room using lasers Share 0. “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). Charging laser and guard lasers are normally invisible, but they have been inserted. (2017). How to Charge a Smartphone – Using Lasers. “Safety was our focus in designing this system,” said co-author Shyam Gollakota, an associate professor in the UW’s Paul G. Allen School of Computer Science & Engineering. 2013. (2017). Shane S. Clark, Jeremy Gummeson, Kevin Fu, and Deepak Ganesan. DOD and Navy applications for laser power beaming. University of Washington, Seattle, WA, USA. 2004. Design of a flexible high performance quadcopter platform breaking the MAV endurance record with laser power beaming. Check if you have access through your login credentials or your institution to get full access on this article. International Journal of Occupational Safety and Ergonomics 19, 2 (2013), 195--202. 2011. (1995). 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. We demonstrate a novel laser-based wireless power delivery system that can charge mobile devices such as smartphones across a room. 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. 2017. In Proceedings of the 2014 ACM Conference on SIGCOMM (SIGCOMM ‘14). FingerIO: Using Active Sonar for Fine-Grained Finger Tracking. 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. Wireless power transmission experiment using an airship as relay system and a moveable rover as ground target for later planetary exploration missions. University of Washington students have figured out a secure way to charge a smartphone with almost-infrared lasers. 2014. F Steinsiek, KH Weber, WP Foth, HJ Foth, and C Schafer. The generator is mounted on top of an aluminum heatsink. Ltd Hebei I.T. Researchers installed a skinny vigor phone to the returned of a smartphone, which costs the smartphone the use of power from the laser … Coherent Inc. 2017. 2009. Rev. 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). ACM, New York, NY, USA, 39--50. https://doi.org/10.1145/2486001.2486015. Charging Unplugged: Will Distributed Laser Charging for Mobile Wireless Power Transfer Work? 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. (2017). 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. Measurement Science and Technology 21, 10 (2010), 105207. The wireless charging system created by University of Washington engineers. 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. Q. Liu, J. Wu, P. Xia, S. Zhao, W. Chen, Y. Yang, and L. Hanzo. http://www.meadowlark.com/store/data_sheet/opticalshutter.pdf, Aaron N. Parks, Angli Liu, Shyamnath Gollakota, and Joshua R. Smith. 2016. Second, even if one can turn off the power to the laser immediately, commodity continuous wave laser drivers have control circuits that may introduce significant delays. 2012. Check out the GeekWire Summit lineup A smartphone is powered up using a laser-based charging system. Hal E Bennett. 1--10. 1--4. https://doi.org/10.1109/WMCaS.2013.6563551, A. Sahai and D. Graham. 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 … 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. IEEE, 2660--2665. Michael Buettner, Richa Prasad, Alanson Sample, Daniel Yeager, Ben Greenstein, Joshua R. Smith, and David Wetherall. 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. © 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. 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