A low-latency end-to-end communication method based on CAN bus

Abstract

The invention relates to a low-latency end-to-end communication method based on a CAN bus, comprising the following steps: connecting a plurality of bay layer devices and a CAN communication gateway through a CAN bus; PHY Ethernet port or 5G module connection; the low latency is the connection of microsecond-level delay; when the interval layer device communicates with the CAN communication gateway, the priority is automatically converted or the CAN load is intelligently adjusted. rate method, so that the communication delay is less than 5ms. The invention applies the standard CAN bus hardware bottom layer protocol, formulates the standard protocol for the application layer, and realizes "low delay" and "end-to-end" communication characteristics by embedding CPU software and hardware optimization, and can also solve the "last mile communication" data high-speed Communication problems.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a "low-latency, end-to-end" method suitable for realizing one of the 5G core technologies through the CAN bus. Background technique [0002] With the development of new technologies such as industrial Internet, Internet of Things technology, 5G technology, and artificial intelligence, the data transmission requirements for smart devices in the field of electric energy are getting higher and higher. At present, China's 5G suppliers Huawei and ZTE both solve public network construction, and low-cost Latency and end-to-end communication are one of the important indicators of 5G technical indicators. 5G proposes end-to-end delay requirements at the millisecond level. Ideally, the end-to-end delay is 1ms, and the typical end-to-end delay is about 5-10ms. . "Low latency and end-to-end" technical indicators are one of the important indicators for realizing electrical industrial con...

AI Technical Summary

Problems solved by technology

[0005] The focus of the present invention is to solve the problem of "low delay, end-to-end" communication of "last mile communication". The "low latency" of the equipment is transmitted to the execution layer of the power equipment. This protocol has the "low latency" feature of the CAN bus, and the data transmission delay of the CAN bus protocol layer is lower than 5ms

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