USB (universal serial bus) interface type automatic impact waveform collection system

Abstract

The invention discloses a USB (universal serial bus) interface type automatic impact waveform collection system, which comprises a USB interface, an AD (analog / digital) collection chip, a random access memory RAM and a field programmable gate array FPGA. The AD collection chip is used for collecting data, the random access memory RAM is used for continuously storing the data, and the field programmable gate array FPGA is used for analyzing the data collected by the AD collection chip and storing the data in the random access memory RAM, is connected with the AD collection chip and the random access memory RAM and is also connected with the USB interface. The system has a reasonable design and can be used conveniently, the free connection of the interface with any computer can be realized effectively, and no external trigger signals are needed. Moreover, the triggering can be adjusted automatically according to the impact waveform, the waveform can be recorded, and thus the reliability and flexibility of the whole system can be improved.

Description

technical field [0001] The invention relates to an automatic collection system, in particular to an automatic collection system for shock waveforms of a USB interface used in shock tests. Background technique [0002] During the impact test, the waveform acquisition mostly uses ISA or PCI interface acquisition cards, and most of them need to provide an external acquisition trigger signal to notify the acquisition card to perform a waveform data acquisition. As users have higher and higher requirements for portability and versatility, this collection method has been eliminated by the market. Therefore, the development of an external acquisition system, the interface can be freely connected to any computer (desktop, industrial computer, notebook and embedded system), no external trigger signal is required, and the acquisition system that can automatically adjust the trigger and record the waveform according to the shock waveform is the present invention. Problems that researc...

AI Technical Summary

Problems solved by technology

[0002] During the impact test, ISA or PCI interface acquisition cards are mostly used for waveform acquisition, and most of them need to provide an external acquisition trigger signal to notify the acquisition card to perform a waveform data acquisition. As users have higher and higher requirements for portability and versatility, this collection method has been eliminated by the market

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