An information collection device and method

Abstract

The invention provides an information acquisition device and method. An information acquisition module, a code analysis, time self-traveling and time keeping module, a time stamping module and a port receiving and transmitting module of the device are arranged on an FPGA (field programmable gate array) hardware platform; the four modules are arranged on the FPGA hardware platform, an FPGA has the characteristic of parallel receiving of data, messages of multiple internet ports can be acquired synchronously in parallel, and the condition that all the internet ports use the same working clock when acquiring the messages is guaranteed. The problem that the time mark consistency is low when the multiple internet ports acquire the messages due to the fact that the internet ports adopt respective crystal oscillators is solved. Time information is obtained by analyzing time serial code levels, and time keeping and time self-traveling processing is performed according to pulse-per-second signals in the time information, and the problem of low time precision caused by the fact that time cannot be adjusted timely according to accessed time serial codes can be solved.

Description

technical field [0001] The invention relates to the field of automation control, and more specifically, to an information collection device and method. Background technique [0002] With the continuous improvement of substation automation, information from secondary equipment in substations, especially time synchronization information, has increasingly become an important basis for accident analysis and system recovery. At present, information collection is generally done by indirect expansion of multiple network port chips on the bus and interface standard PCIE interface to collect data packets, and select the network port chip with the function of time stamping to stamp the received time stamp on the message, but each network port Using separate crystal oscillators, because the frequencies of different crystal oscillators are different, will reduce the time stamp consistency when multiple network ports collect packets. Thirdly, in the prior art, the time cannot be adjuste...

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention provides an information collection device and method to solve the problems of time scale consistency and low time accuracy when multiple network ports collect messages

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