Vehicle-mounted optical fiber switch supporting hybrid topological structure

Abstract

The invention discloses a vehicle-mounted optical fiber switch supporting a hybrid topological structure. The vehicle-mounted optical fiber switch comprises a switch body and an optical fiber coupler, the switch body is provided with a plurality of optical ports, and each optical port is connected with a large-bandwidth device or a plurality of small-bandwidth devices according to the bandwidth required by each device in the vehicle; the plurality of small-bandwidth devices are connected to the same optical port through the optical fiber coupler; each device in the vehicle and the switch body form a hybrid topological structure network; the switch body is used for configuring the working mode of the optical port to be a point-to-point working mode or a point-to-multipoint working mode and controlling data interaction between devices in the vehicle. According to the invention, each optical port can support point-to-point full duplex connection or point-to-multipoint passive coupling connection, and respectively support switching type topological structure connection and bus type topological structure connection between devices; the bandwidth utilization efficiency of the switch can be improved, the number of optical ports is reduced, and volume consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of intelligent automobile electronics, and more specifically relates to a vehicle-mounted optical fiber switch supporting a hybrid topology. Background technique [0002] With the intelligent development of automobiles, many sensors and processors are deployed in the safety system and assisted driving system of the automotive electronic system, which requires the automotive electronic system to provide a higher-capacity data network to support the data between various devices. exchange. Especially for future unmanned vehicles, which are equipped with multiple lidars, high-definition cameras, millimeter-wave radars and positioning systems, the amount of data exchange between these sensing devices and the on-board computer is huge, and the traditional in-vehicle network is difficult to meet the demand. [0003] The new generation of mainstream automotive electronic networks is mainly based on the Time Sensiti...

AI Technical Summary

Problems solved by technology

In the automotive electronic system, the bandwidth required by each device is different. Connecting a large-bandwidth device to a switch optical port can make full use of the large bandwidth of the optical fiber switch port, but when a small-bandwidth device is connected to the switch optical port, its actual The bandwidth used is much smaller than the bandwidth provided by the optical port, so it will waste the bandwidth of the fiber optic switch

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