US 11,722,226 B2
Fail-safe optical wireless power supply
Ortal Alpert, Ness Ziona (IL); Lior Golan, Ramat Gan (IL); Ori Refael Mor, Tel Aviv (IL); Ran Sagi, Tel Aviv (IL); Omer Nahmias, Aminadav (IL); Yoram Ashush, Petach Tikveh (IL); Yoav Biderman, Tel Aviv (IL); Zohar Mills-Levin, Rehovot (IL); Yan Rosh, Tel Aviv (IL); and Eyal Conforti, Tel Aviv (IL)
Assigned to Wi-Charge Ltd., Rehovot (IL)
Filed by Wi-Charge Ltd., Rehovot (IL)
Filed on Jul. 16, 2021, as Appl. No. 17/378,218.
Application 17/378,218 is a continuation of application No. 16/651,788, granted, now 11,070,298, previously published as PCT/IL2018/051073, filed on Sep. 28, 2018.
Claims priority of provisional application 62/564,428, filed on Sep. 28, 2017.
Prior Publication US 2021/0344427 A1, Nov. 4, 2021
Int. Cl. H04B 10/80 (2013.01); H02J 50/30 (2016.01); H02J 7/02 (2016.01)
CPC H04B 10/807 (2013.01) [H02J 7/02 (2013.01); H02J 50/30 (2016.02)] 13 Claims
OG exemplary drawing
 
1. A wireless power transmission system for transmitting a beam of optical power to at least one receiver having a receiver control unit, a receiver functionality monitor unit and a power conversion device, said system comprising:
a transmitter having at least one first emission state, and at least one second emission state, each of said at least one second emission state having an emission higher than the highest emissions of any of said at least one first emission state, said receiver functionality monitor unit being adapted, upon detection of a receiver control unit fault, to preclude said transmitter from switching from at least one of said first emission states to any of said at least one second emission state;
a transmitter control unit;
a transmitter functionality monitor unit adapted, upon detection of a transmitter control unit fault, to preclude said transmitter from switching from at least one first emission state to any of said at least one second emission states; and
at least two sensors configured to provide signals indicative of a level of human-accessible emission from said wireless power transmission system greater than a predetermined level,
wherein, should none of said at least two signals indicate a level of human-accessible emission greater than said predetermined level and should at least two signals arising from at least two of said sensors provide results differing from each other by more than a predetermined amount, said transmitter control unit is adapted to preclude said transmitter from switching from said at least one first emission state to any of said at least one second emission state.