The vehicle software upgrade is through OTA technology, which is to upgrade the application software such as in-vehicle entertainment, navigation, human-computer interaction, and firmware such as steering, braking, and body control. The vehicle OTA upgrade package is composed of upgrade packages that can upgrade the ECU in the upgrade object. For vehicle OTA types, it is mainly divided into two categories, FOTA (Firmware-over-the-air) and SOTA (Software-over-the-air). OTA requirements for different scenarios.
FOTA (also known as mobile terminal over-the-air software upgrade technology), by downloading and installing a complete firmware image to the vehicle controller, it can realize the upgrade and update of the complete system function. FOTA involves a complete systematic update of the core functions of the controller’s related strategies, which has a great impact on the performance of the vehicle. The upgrade process has extremely high requirements on timing, stability, and safety. At the same time, the preconditions for the upgrade include gear position, battery power, and vehicle speed. and other requirements, the upgrade process generally does not support ignition vehicles.
FOTA realizes the complete upgrade and update of system functions by downloading and installing a complete firmware image to the vehicle controller. For example, upgrade the intelligent driving system of the vehicle to allow drivers to enjoy more and more assisted driving functions; upgrade the cockpit system of the vehicle to improve the accuracy of driver fatigue detection; upgrade the braking system of the vehicle to improve the braking performance of the vehicle.