Ethernet Switch Chip Protocol Conversion for Vehicle Data
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Solution Overview
Problem
Current data conversion between in-vehicle communication buses and Ethernet protocols introduces significant delays, failing to meet real-time requirements for vehicle control and automatic driving functions, and limits simultaneous data transmission to the in-vehicle central computing platform.
Innovation Solution
A data communication method utilizing a field programmable gate array chip to acquire a data subscription list, establish a data distribution list by associating transmission protocols between devices, and transmit data according to defined requirements, enabling efficient and simultaneous data transfer between devices with reduced latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data conversion is performed by separate processing chips (MCU, SOC, or switch chip), then protocol conversion between in-vehicle communication bus and Ethernet is achieved, but transmission delay increases to several milliseconds to hundreds of milliseconds
Solution Approach 1:
The patent merges the protocol conversion function into the Ethernet switch chip itself, combining previously separate components (processing chips like MCU/SOC and switch chip) into a single integrated device. This integration eliminates the need for separate conversion steps and reduces transmission delay while maintaining protocol conversion capability between in-vehicle communication buses and Ethernet.
2Adaptability or versatility
If data conversion is performed by separate processing chips, then protocol compatibility is ensured, but data transmission throughput decreases due to sequential processing
Solution Approach 1:
The patent integrates protocol conversion functionality directly into the Ethernet switch chip, allowing multiple data streams to be converted and forwarded simultaneously without sequential processing bottlenecks. This merging enables parallel processing of multiple protocols while maintaining compatibility, significantly improving data transmission throughput.
Solution Approach 2:
The Ethernet switch chip is designed with multi-functional capability to handle multiple protocol conversions simultaneously. The chip can convert between different in-vehicle communication bus protocols and Ethernet protocols in parallel, serving multiple functions within a single device and enhancing overall system productivity.
3Manufacturing precision
If data is transmitted one by one through separate processing, then protocol conversion accuracy is maintained, but communication efficiency decreases and safety risks increase
Solution Approach 1:
The patent combines protocol conversion and data forwarding operations into a single integrated process within the Ethernet switch chip. This merging maintains protocol conversion accuracy through dedicated conversion logic while enabling simultaneous processing of multiple data streams, thereby improving communication efficiency and reducing safety risks associated with delayed data transmission.
Data Source
AI summary
A data communication method includes: acquiring a data subscription list for defining a data transmission relationship between each first device and each second device in the vehicle; establishing, according to the data subscription list, an association between a transmission protocol of a first device and a transmission protocol of a second device having a data transmission relationship with the first device to generate a data distribution list for defining a data transmission requirement between the first device and the second device having the data transmission relationship with the first device; and when data transmitted from at least one first device is received, transmitting data of each of the at least one first device to a second device having a data transmission relationship with the respective first device according to a corresponding data transmission requirement of the data distribution list.