A modular software 400 includes an external communication layer 401 to perform external communication to and from a vehicle network, level 1 functions and hardware. An application layer 403 contains safety algorithms and software functions, where each function is assigned an Automotive Safety Integrity Level (ASIL) rating for level 2 and level 3 safety monitoring. An input/output (I/0) layer 402 provides an interface between a plurality of rings in the level 2/level 3 safety monitoring functions and the communication layer. The I/O layer encapsulates the modules present in the level 2 and level 3 functions to be independent from the external communications. The application layer also includes functional safety algorithm rings to monitor torque inaccuracies to prevent unintended acceleration or deceleration, high voltage battery monitoring, inverter temperature diagnostics and other hardware, sensor or software related diagnostics. Arbitration and error reporting layers are also provided.
A modular safety software architecture for electrified-powertrain control systems
2018-08-01
Patent
Elektronische Ressource
Englisch
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G05B Steuer- oder Regelsysteme allgemein , CONTROL OR REGULATING SYSTEMS IN GENERAL |
Powertrain control system and strategy for electrified vehicle
Europäisches Patentamt | 2020
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