PASSIVE KEYLESS ENTRY SYSTEM FOR PREVENTING RELAY ATTACKS

You are here: Homepage > Search

PASSIVE KEYLESS ENTRY SYSTEM FOR PREVENTING RELAY ATTACKS

Free access

GUSTIN MATJAZ

A passive keyless entry system (100) including an in-vehicle apparatus (110) installable on a vehicle (100) and a portable apparatus (140). The in-vehicle apparatus (110) includes: a plurality of antennas (111, 112, 113) for generating a plurality of respective magnetic fields (HI, H2, H3), an in-vehicle receiver for communicating with a portable transmitter of the portable apparatus (140), an in-vehicle control unit (115). The portable apparatus (140) includes: a receiving antenna (141) having three mutually orthogonal coils (141x, 141y and 141z), a portable transmitter for communicating with the in-vehicle receiver, a portable control unit (142). The portable apparatus (140) is configured for measuring at least two projections (m1, m2, m3) of the magnetic fields (HI, H2, H3). The in-vehicle control unit (115) or the portable control unit (142) is configured for computing at least one computed angle (± m , ± m13 , ± m23 ) between two projections (m1, m2, m3) of the magnetic fields (HI, H2, H3). The in-vehicle control unit (115) or the portable control unit (142) is configured for comparing the at least one computed angle (± m , ± m13 , ± m23 ) with an angular threshold value (± t ). The in-vehicle control unit (115) prevents the authorization signal when all the computed angles (± m , ± m13 , ± m23 ) are lower than angular threshold value (± t ).

Access

Download

Export, share and cite

Document information

Title :

PASSIVE KEYLESS ENTRY SYSTEM FOR PREVENTING RELAY ATTACKS

Additional title:

PASSIVES SCHLÜSSELLOSES ZUGANGSSYSTEM ZUR VERHINDERUNG VON RELAISANGRIFFEN
SYSTÈME D'ENTRÉE SANS CLÉ PASSIF POUR EMPÊCHER DES ATTAQUES PAR RELAIS

Contributors:

GUSTIN MATJAZ (author)

Publication date :

2020-08-26

Type of media :

Patent

Type of material :

Electronic Resource

Language :

English

Classification :

IPC:

B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte