Data acquisition and transmission system

Abstract

The invention relates to a data acquisition system, in particular to a USB data acquisition and transmission system based on an FPGA and a LabVIEW. The data acquisition and transmission system is formed by an FPGA chip, an ADC chip, a digital sensor, a USB interface chip and a liquid crystal display and drive circuit. The FPGA has the advantages not possessed by a single chip microcomputer and a DSP in terms of high speed data storage, and the FPGA is adopted for designing the data acquisition system. The data acquisition and transmission system has the advantages of being short in development cycle, high in integration level, low in power consumption, high in working efficiency, capable of achieving ns-level clock delay, capable of being repeatedly programmed on site, flexible in programming configuration and the like.

Description

technical field [0001] The invention relates to a data acquisition system, in particular to a USB data acquisition and transmission system based on FPGA and LabVIEW. Background technique [0002] The data acquisition system is the bridge between the computer and the outside, and also the traditional Chinese medicine way for the computer to obtain information. It is playing an increasingly important role in modern scientific research and industrial control. [0003] In the field of data acquisition, traditional data acquisition systems often use single-chip microcomputers, DSPs, etc. as controllers to control the work of analog-to-digital converters, memory, serial interfaces, and other peripheral circuits. However, due to the impact of the instruction cycle and processing speed of the computer itself, its clock frequency is low, and various functions need to be realized by running software. The software running time occupies a large proportion of the entire sampling process,...

AI Technical Summary

Problems solved by technology

However, due to the impact of the instruction cycle and processing speed of the computer itself, its clock frequency is low, and various functions need to be realized by running software. The software running time occupies a large proportion of the entire sampling process, and the efficiency is low, which is difficult to meet System requirements for real-time and synchronization of data acquisition system

The DSP-based data acquisition system, although the processing speed is very fast, but the cost is high, too frequent interruptions will reduce the efficiency of the CPU, and the corresponding speed will deteriorate

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