Can automotive Ethernet 10BASE-T1S replace the CAN bus?

eric_wang

Can automotive Ethernet 10BASE-T1S replace the CAN bus? [Copy link]

Electric vehicles are becoming more and more complex, with the number of electronic control units (ECUs) in vehicles already reaching around 150, distributed across various vehicle components, controlling key functions such as steering, braking, chassis and powertrain, as well as comfort functions such as infotainment and air conditioning. These ECUs communicate with each other through the in-vehicle network (IVN) to ensure that the vehicle can work together.

Today, the traditional automotive bus can no longer meet the needs of ECU. At the same time, as the automotive E/E architecture moves towards regionalization, a new bus is also needed to match it.

This year, ADI and BMW Group announced that they will be the first to adopt ADI's 10BASE-T1S EB (Ethernet-Edge Bus) technology in the automotive industry. In-vehicle Ethernet connectivity is a key factor in driving the adoption of new partitioned architectures in automotive design, supporting major trends such as software-defined cars. BMW Group will be one of the first original equipment manufacturers (OEMs) to use this technology, using ADI's EB technology in future smart cockpit ambient lighting systems.

This year, ON Semiconductor also exhibited the function of using 10BASE-T1S to achieve precise control of car headlights, and realized regional control through the ECU-Light architecture, including each lighting function can be controlled through the graphical user interface (GUI), providing highly flexible headlight configuration, which means that automakers can design more personalized and diversified headlight systems to meet the needs of different models and driving conditions. At the same time, the diagnostic information of the LED driver can be read regularly to ensure that the system always maintains optimal performance... Welcome to follow our subscription account on WeChat: Automotive Development Circle (ID: AutoDevelopers)>> Read the full content

beyond_笑谈

The concept of automotive Ethernet has been around for many years, but this time 10BASE-T1S seems to be real. The key is that ADI is relatively strong in automotive electronic communication bus technology. Previously, A2B occupied the audio bus and replaced the control signal function of CAN.

jobszheng5

I think there are two aspects to this replacement.

The advantages of new technologies must be stronger than CAN and CAN-FD, otherwise, it cannot be called new technology;

Another aspect is promotion, which mainly comes from cost;

Traditional fuel vehicles do not have a large demand for data, and CAN can easily cope with it. However, with today's new energy vehicles, especially after the introduction of AI technology, the amount of data is increasing exponentially, which will be a critical blow to CAN.

Now it seems that this technology should be implemented soon