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The First Fully Autonomous Train Successfully Rolled off the Assembly Line

On the afternoon of October 17, Shanghai Metro Line 18 held a roll-off ceremony at CRRC Zhuji. The project train is currently the highest level fully automatic driving train (GoA4) unattended during the whole process.Shanghai Metro Line 18 was initially equipped with 50 vehicles and adopted the national standard 6-section A-type car group, with a maximum speed of 80km/h.BEIHAI Communication provided on-board passenger information system for Shanghai Line 18 trains. For the GoA4 level, the passenger information system can adapt to a variety of scenarios for linkage, and it fully considers reliability and redundancy. The passenger information system of this project uses a highly redundant ring Ethernet architecture, with dual switches for each vehicle and power supplied separately...

2019 - 12 - 26

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Optical Interconnect Solution for Cloud Data Center

发布日期： 2022 - 08 - 05

Cloud data center is the infrastructure of cloud computing. Cloud computing business is continuing to penetrate, driving the construction of cloud computing super data center. The cloud IT infrastructure is mainly composed of switches, servers, and optical cables and optical modules (or AOC) that interconnect all these. The large-scale cloud data center will greatly increase the use of optical modules, and have more requirements for the transmission distance of optical modules, which will increase the proportion of single-mode optical modules.The explosive growth of cloud data center traf...

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Characteristics of Cloud Data Center Optical Module Requirements

发布日期： 2022 - 07 - 29

According to the difference in the increasing rate of traffic, network architecture, reliability requirements and the environment of the machine room compared to telecommunication networks, the demand of optical transceivers of cloud data centers has the following characteristics : shorter iteration period, higher speed, higher density and low power consumption.Short iteration periodThe rapid growth of data center traffic is driving the continuous upgrade of optical transceivers in acceleration. The hardware devices of data centers including optical transceivers has an iteration period of arou...

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