In today’s world, modern automobiles are becoming more and more digital platforms on wheels. In software-defined vehicles, software plays an important role in defining the vehicle's capabilities rather than hardware. All the capabilities of the software-defined vehicle, including advanced driver assistance systems, battery management, infotainment, etc., rely on software. This is where firmware management plays an important role.
For a broader market perspective, see the Software-Defined Vehicle Market analysis.
The Shift Toward Software-Centric Vehicles
Traditional vehicles have made use of various individual ECUs that have been pre-programmed during the manufacturing stage, but have not been updated at a later stage. Software-defined vehicles make use of centralized computing platforms that have the ability to make use of various software layers for controlling various functions of the vehicle at the same time.
Firmware can be defined as the basic software that is used for controlling various parts of the vehicle's hardware of the vehicle. Firmware management is of critical importance in ensuring that various parts of the vehicle's hardware are properly synchronized.
Automotive firms of today make use of firmware updates not only for solving issues but also for adding new features to the vehicle, enhancing performance and adding security to the vehicle. This is a critical differentiator in the automotive industry, especially considering the fact that various firms have made use of different technologies in their vehicles.
Architecture of Firmware Management Systems
Vehicle firmware management systems usually follow a multi-layered framework that includes vehicle hardware, embedded software modules, cloud platforms, and vehicle update management systems.
At the hardware layer, sensors, ECUs, and control units run embedded software that handles the main vehicle operation. Developing and maintaining this hardware-level code often requires firmware expertise from engineering partners such as Lemberg Solutions.
These devices then communicate with the centralized vehicle gateways or domain controllers that manage the vehicle network’s software deployment.
Cloud platforms play a vital role in the management of vehicle firmware. Automakers utilize cloud platforms to monitor the status of the vehicle’s software. This platform identifies vulnerabilities in the vehicle’s software and distributes the necessary updates to the vehicle network.
Communication between the cloud platform and the vehicle network usually occurs via a cellular network or a Wi-Fi network. After the vehicle receives the firmware update package from the cloud platform, the vehicle’s firmware update manager will then validate the file before the installation process.
Over-the-Air Updates and Lifecycle Management
Another feature that is significant in firmware management is over-the-air update technology. OTA update technology is used by automakers to update the firmware in their vehicles. This is done without the need to take the vehicle to the dealership. This feature has been significant in recent times, especially since modern vehicles contain millions of lines of code.
Once the update is announced, the vehicle receives a notification. It then downloads the firmware package in the background. While it installs the update, it ensures safe execution of the update by using various mechanisms.