What are the automotive electronics grade standards?

neolee08

What are the automotive electronics grade standards? [Copy link]

I have just entered the field of automotive electronics and am responsible for hardware design. I am not very familiar with automotive standards, especially automotive communications. 1. If we want to meet automotive standards, do all the above components have to be automotive-grade components that meet automotive standards? 2. Is CAN a standard for communication between various units inside the car, or are there newer standards? Because today's automotive electronics also have entertainment systems, navigation systems, and 4G network systems, can these be connected using one communication standard? 3. What are the things to pay attention to in automotive electronic hardware design? 4. What are some good forums for automotive electronics? I would like to trouble all the experts to give me help and guidance. Thank you very much!

alan000345

I will mainly talk about the first and second points. Please correct me if I am wrong. For the first point, Rhine engineers said that the basic components that make up the car must meet the requirements of the level to be certified, and the component manufacturers need to issue relevant certification certificates. At the same time, the test of the whole vehicle must also meet the requirements of the level to be certified. If the components do not have relevant certification certificates, the car does not need to be tested and is directly considered to be unverified. He emphasized that the main control chip must use automotive-grade chips, and at the same time, it can meet the tolerance rate required by the car. Automotive-grade chips cannot fail once every 10 years. The second point is that the communication between the various components of the electric drive inside the car is for the car to be able to drive and wait for loading normally, just like the human brain controls the two legs of the human body through the neural network. Therefore, CAN communication is similar to the human neural network, and it is simpler than that of humans. There are only two lines, using the changes of high and low levels to transmit code messages of 0 and 1. The entertainment equipment of the auxiliary system is generally independent from the car, and basically does not involve communication with the various components inside the car. Just like a person holding a mobile phone, the entertainment equipment only needs direct human operation. The communication between the mobile phone and the entertainment equipment is wireless communication that is not transmitted through the signal line, so 4G is used. The communication protocol is manually edited to adapt to the requirements of wired and wireless transmission, transmission distance and the number of communication components. Due to objective conditions, I personally feel that at present, the protocols used in wired and wireless communication are basically unifiable, but the protocols between wired communication can be unified, and the protocols between wireless communication can also be unified. Second, friends who are new to cars generally look directly at CAN communication and CAN communication's extended communication protocol J1939, which is a bit confusing. I hope this makes it clear. The third and fourth points involve too much, so let's see what other friends say first.

GloriaGao

Regarding the second point, you can look at the introduction of vehicle communication buses. There should be about four types of buses: FlexRay, LIN, CAN and Ethernet. Different interface types are used according to different rates.

luck_gfb

The automotive grade certification of the device is AEC-Q101.

efrik

The main domestic standards must comply with the 16949 industry standards, and both production and devices must comply! The R&D process is also controlled by PPAP rules!