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原文传递 CAN-FD protocol: Can your diagnostic tools keep up?

题名：	CAN-FD protocol: Can your diagnostic tools keep up?
正文语种：	eng
摘要：	It's a well known fact modern vehicles have become increasingly complex with an ever increasing number of sensors and control modules. As the number of sensors has increased, so has the amount of data flowing between modules. In addition, Advanced Driver Assistance Systems (ADAS) which are common in many vehicles require very fast communication between sensors and modules to prevent collisions.To be able to keep the existing two wire hardware of the vehicle Controller Area Network (CAN) and improve communication, the CAN FD communication protocol was released in 2012. This upgraded communication protocol has been slowly adopted by vehicle manufacturers over the last decade and is currently common with new passenger cars & light trucks. The main advantages of the CAN FD protocol are data transmission rates of up to 5 times faster compared to standard CAN and larger amounts of data to be transmitted on the same vehicle wiring. This is achieved by increasing the message size from 11 bits with standard CAN to 29 bits. The message payload is also increased from 8 to 64 bytes allowing more data to be communicated. To maximize the speed and amount of data, moving across the CAN, the CAN FD protocol can rapidly switch between high & low data rates depending on demand. To maintain data integrity and detect errors, the CAN FD protocol includes 5 different elements.
出版年：	2022
期刊名称：	Motor age
卷：	141
期：	2
页码：	37-37