AUTOMOTIVE ANTI-HOGGING DEVICE (VERSIONS) Russian patent published in 2019 - IPC B60R25/04 B60R25/22 B60R25/24 

FIELD: data processing.

SUBSTANCE: automotive anti-hogging device (AAD) contains microcontroller, which program includes an authentication process based on SHA-256 hashing algorithm or digital signature algorithm on elliptic curves ECDSA with technology of physically non-cloned function PUF, connected by contact method keys operating on said algorithms, input unit for monitoring state of sensors, limit switches of car doors, etc., and also has functions for enabling or disabling engine start-up by means of relays and CAN bus, function of generating and transmitting corresponding SMS notifications and dialing to user via GSM-module with SIM card installed, as well as function of vehicle coordinates determination by means of GPS-module. For communication AAD with GSM- and GPS-modules interface RS-422 is used. Receiving incoming to inputs AAD signals is carried out by means of input device made on the basis of shift register with possibility of reading state of input signals through interface SPI. Output device AAD is made on the basis of specialized micro-driver with reverse diagnostic link with transistor outputs as "open drain", state of which is controlled AAD by SPI interface or by means of signals supply to parallel inputs of said driver chip. CAN bus driver is intended for connection of controller to common bus of vehicle for subsequent blocking of engine start in modes of protection, and also for reading of fault codes of electronic engine control system (ECM).

EFFECT: higher degree of AAD protection.

2 cl, 1 dwg