US 12,313,705 B2
System and method for cancelling a continually varying electromagnetic field in a passenger cabin
Shaul Shulman, Ramat Gan (IL); Bernard Arambepola, Enfield Greater London (GB); and Oded Ei-Nat, Herzliya (IL)
Assigned to Safefields Technologies LTD, Herzliya (IL)
Filed by SAFEFIELDS TECHNOLOGIES LTD, Herzliya (IL)
Filed on May 2, 2024, as Appl. No. 18/653,741.
Application 18/653,741 is a continuation of application No. PCT/IL2022/051161, filed on Nov. 3, 2022.
Claims priority of application No. 287834 (IL), filed on Nov. 4, 2021; and application No. 292255 (IL), filed on Apr. 13, 2022.
Prior Publication US 2024/0282496 A1, Aug. 22, 2024
Int. Cl. G01R 33/00 (2006.01); B60L 3/00 (2019.01); B60N 2/90 (2018.01); B60R 16/023 (2006.01); G01R 33/07 (2006.01); H01F 7/06 (2006.01); H01F 7/20 (2006.01); H01F 27/34 (2006.01); H05K 9/00 (2006.01)
CPC G01R 33/0023 (2013.01) [B60L 3/0061 (2013.01); B60N 2/90 (2018.02); B60R 16/023 (2013.01); G01R 33/0094 (2013.01); H01F 7/064 (2013.01); H01F 7/20 (2013.01); H01F 27/34 (2013.01); H05K 9/0071 (2013.01); B60N 2210/14 (2023.08); G01R 33/07 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for reducing a time-varying undesired magnetic field in a passenger compartment of a vehicle, the system comprising:
at least one magnetic field source in the vehicle configured to transmit time-varying currents resulting in the time-varying undesired magnetic field in the passenger compartment, wherein the passenger compartment includes a selected region suitable for presence of people;
at least one sensor configured to detect at least a portion of the time-varying undesired magnetic field in the selected region and to provide associated sensing data indicative of at least the portion of the time-varying undesired magnetic field in the selected region;
at least one magnetic field generator configured to generate a time-varying cancellation magnetic field in the selected region;
at least one circuit configured to:
receive the associated sensing data indicative of the at least the portion of the time-varying magnetic field;
determine the time-varying cancellation magnetic field from the associated sensing data; and
transmit signals to the at least one magnetic field generator to thereby cause the at least one magnetic field generator to generate the time-varying cancellation magnetic field for at least reducing the time-varying undesired magnetic field, wherein the at least one sensor, the at least one magnetic field generator, and the at least one circuit are configured as an integral part of the vehicle.