Automobile optical fiber Ethernet communication device

Abstract

The embodiment of the invention discloses an automobile optical fiber Ethernet communication device. According to the technical scheme provided by the embodiment of the invention, the work of the sleep awakening module is controlled through the control module; when automobile optical fiber Ethernet communication needs to be carried out, the sleep awakening module is controlled to electrify the optical fiber Ethernet transceiver and the photoelectric conversion module, a photoelectric conversion module is connected between two nodes needing communication connection through an optical fiber. Ethernet data transmission of the two communication nodes is realized, the photoelectric conversion module performs photoelectric conversion on Ethernet data, Ethernet data are transmitted and received through the optical fiber Ethernet transceiver, optical fiber communication is used for achieving the current isolation effect, due to the excellent EMC performance of the optical fiber Ethernet transceiver, the complexity and cost of the EMC debugging process are reduced, the EMC performance of the automobile Ethernet is improved, and the requirement for current isolation is met.

Description

technical field [0001] The embodiment of the present application relates to the field of Ethernet communication, in particular to an automotive optical fiber Ethernet communication device. Background technique [0002] The application of new automotive technologies puts forward higher requirements for the bandwidth of automotive networks, driving the explosive growth of automotive network bandwidth demand. However, traditional automotive networks have low bandwidth or high costs and poor scalability, making it difficult to meet the various needs of automotive manufacturers. [0003] Ethernet was born early and has the advantages of mature technology, high bandwidth, low cost and strong scalability. It has been widely used before entering the automotive field. Due to the high transmission bandwidth of Ethernet, it leads to higher energy emissions. (Electromagnetic Compatibility) requirements are very strict, so that Ethernet has not achieved technological breakthroughs in rec...

AI Technical Summary

Problems solved by technology

[0002] The application of new technologies in automobiles puts forward higher requirements for the bandwidth of automobile networks, which promotes the explosive growth of bandwidth demand for automobile networks. However, traditional automobile networks have low bandwidth or high cost and poor scalability, making it difficult to meet the various needs of automobile manufacturers.

[0003] Ethernet was born early and has the advantages of mature technology, high bandwidth, low cost and strong scalability. It has been widely used before entering the automotive field. Due to the high transmission bandwidth of Ethernet, it leads to higher energy emissions. (Electromagnetic Compatibility) requirements are very strict, so that Ethernet has not achieved technological breakthroughs in recent years and can be used in automobiles, that is, automotive single-pair twisted pair (100Base-T1 / 1000Base-T1 standard), but in its development process, Need to do a series of professional standard tests (such as PMA test), and the need to pass these tests not only requires expensive instruments, but also the complexity of hardware debugging will undoubtedly lead to more costs

[0004] The electrical environment in the car is complex. For safety reasons, the key nodes need to be galvanically isolated to prevent short circuits. However, the existing automotive twisted-pair Ethernet communication system has poor EMC performance and is difficult to meet the requirements for galvanic isolation.

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