A method for acquiring network data

Abstract

The invention relates to a network data acquisition method, comprising the steps of: S1, acquiring network data from Ethernet through a hardware acquisition device; S2, judging the complete state of the network data; and S3, adding identification information to the network data according to the complete state of the network data, and packaging and sharing the network data. A memory of a data processing device is mapped with a memory buffer area of the hardware acquisition device, thereby preventing the CPU interrupt of the data processing device from participating in the acquisition of the network data, and then avoiding the data packet loss caused by the overload of the CPU processing capacity of the data processing device. The rate of network data acquisition is improved through the hardware acquisition device and the acquisition performance is ensured. Therefore, in the design of a high-speed network application system, the case where the CPU of the data processing device participates in the network data acquisition does not need to be considered, and the design difficulty and uncertainty of the entire system can be effectively reduced.

Description

technical field [0001] The invention relates to a data acquisition method, in particular to a network data acquisition method. Background technique [0002] With the rapid development of aerospace and space technology, the spacecraft data communication system has gradually developed from a relatively single data management system to a complex data exchange system that connects multiple devices, multiple platforms, and even multiple aircraft assemblies, which has higher communication requirements and new technologies. Characteristics. The flexibility of Ethernet, the high bandwidth of convenient communication access and data transmission, and the ability to adapt to the communication requirements of the spacecraft field. Compared with the traditional spacecraft application and spacecraft test application, high-speed Ethernet application is a new field. The use of high-speed networks requires technical updates to existing data acquisition methods in the aerospace field in or...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a network data acquisition method to solve the problem that data is easily lost in the process of network data acquisition

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