Multi-channel high-speed high-frequency serial data acquisition device and acquisition method thereof

Abstract

The invention discloses a multi-channel high-speed high-frequency serial data acquisition device and an acquisition method thereof. The device comprises a serial data packet processing and caching unit and a processor connected with the serial data packet processing and caching unit, wherein the serial data packet processing and caching unit comprises a serial data packet acquisition module and abuffer module, the serial data packet acquisition module decodes multi-channel high-speed high-frequency serial data and inputs a marking signal produced after decoding into the buffer module, the buffer module updates cached data in real time according to an identification signal, and the data can be read when the processor needs the data. Compared with the prior art, the device disclosed by theinvention is composed of a serial data packet receiving, processing and caching unit and the processor, the serial receiving, processing and caching unit is realized in parallel by virtue of logics inprogrammable logic devices, a multi-channel high-speed high-frequency serial data receiving demand is met, and the data is directly read when the processor needs the data, thus time of a main processor is almost not occupied; meanwhile, system real-time performance is good, functions are realized by virtue of the devices, and scalability is good.

Description

technical field [0001] The invention relates to the technical field of signal acquisition, in particular to a multi-channel high-speed and high-frequency serial data acquisition device and an acquisition method thereof. Background technique [0002] In the photoelectric servo stability control system, the gyroscope is commonly used as the inertial sensor device of the system. In order to increase the isolation ability of the system from carrier interference and improve the stability of the system, the selected gyroscope has a higher bandwidth and a higher frequency of output data update. The bit time is short, and often requires more than two channels of data reception. Ordinary controllers or serial port dedicated receiving circuits cannot meet the real-time requirements of the system. How to achieve ultra-high-speed, high-frequency, multi-serial port data without affecting the normal operation of the system? The real-time acquisition of real-time data is a difficult proble...

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Problems solved by technology

[0002] In the photoelectric servo stability control system, the gyroscope is commonly used as the inertial sensor device of the system. In order to increase the isolation ability of the system from carrier interference and improve the stability of the system, the selected gyroscope has a higher bandwidth and a higher frequency of output data update. The bit time is short, and often requires more than two channels of data reception. Ordinary controllers or serial port dedicated receiving circuits cannot meet the real-time requirements of the system. How to achieve ultra-high-speed, high-frequency, multi-serial port data without affecting the normal operation of the system? The real-time acquisition of real-time data is a difficult problem to be solved by the system

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