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SpaceWire network interface bypass detection device

A network interface and detection device technology, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve problems such as low detection efficiency, difficulty in testing and fault diagnosis, and changing working conditions, so as to improve monitoring efficiency and simplify the chain. Road data detection method to ensure the effect of normal transmission

Active Publication Date: 2021-01-29
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

The operation of disconnecting the original link in this way has the inherent defects of changing the original working state and being inconvenient to implement, which causes great difficulties in the test and fault diagnosis after the satellite system is assembled and integrated, and seriously affects the application effect of the network system
[0004] The existing SpaceWire network monitoring technology research is limited to the data capture of a single link, the detection efficiency is low, and there is a lack of specific feasible solutions for the entire star multi-node SpaceWire network detection
At the same time, its complex and destructive usage cannot meet the testing requirements of subsystem testing and whole-star testing

Method used

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  • SpaceWire network interface bypass detection device
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  • SpaceWire network interface bypass detection device

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Embodiment Construction

[0028] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0029] The device is divided into two parts, the link signal monitoring module and the bypass monitoring analyzer, which are directly connected by a SpaceWire cable. The schematic diagram of the structure is as follows figure 1 shown. Wherein, the link signal detection module is located in the SpaceWire network interface controller, and is an independent module independent of the traditional SpaceWire network interface control module. It is responsible for the real-time monitoring output of the two-way signal flow of the SpaceWire communication interface. The bypass monitoring analyzer is responsible for processing and analyzing the data downloaded from the link signal monitoring module and channel selection and configuration of all link signal monitoring modules, and provides a friendly user interface for testers to use.

[0030] There are M SpaceWire c...

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Abstract

The invention discloses a SpaceWire network interface bypass detection device, which is characterized in that a link signal monitoring module breaks through the traditional monitoring mode that a monitoring device is inserted after an original link is disconnected, a link signal is extracted through a branch structure, meanwhile, the normal transmission of the link signal is ensured, a SpaceWire link data detection method is simplified, and the monitoring efficiency is improved. The device provides a nondestructive monitoring solution, can realize data flow online monitoring and analysis in the network node operation process, and solves the problem that the whole satellite system-level network information flow cannot be measured. The device has good hardware interface expandability, the link signal monitoring module supports instruction configuration monitoring interface gating, and the device is suitable for all SpaceWire interface control modules. The bypass monitoring analyzer can be used as a SpaceWire node to realize plug and play of the test equipment; according to the device, the combination mode of the link signal monitoring module and the bypass monitoring analyzer is flexible, and diversified detection modes such as single-link monitoring and full-network multipoint parallel monitoring can be realized.

Description

technical field [0001] The invention belongs to the technical field of information processing, and in particular relates to a SpaceWire network interface bypass detection device. Background technique [0002] As a high-speed data bus standard dedicated to spacecraft, SpaceWire network is widely used in spaceborne data management and transmission systems due to its high communication rate, interface standard, and flexible topology. The onboard SpaceWire network generally adopts routing switching transmission technology, nodes are interconnected through point-to-point serial communication links or connected to routers, and all kinds of equipment on the star can become a node in the network as long as they have SpaceWire standard interfaces. The information level is also transmitted in a point-to-point manner from the source node to the target node in the form of data packets. Due to the strict requirements on the quality of the low-voltage differential signal on the SpaceWire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L29/08
CPCH04L43/50H04L67/12
Inventor 李欣牛跃华刘伟伟禹霁阳汪路元庞亚龙周东吴伟程博文李宗凌
Owner BEIJING INST OF SPACECRAFT SYST ENG
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