Abstract
The design of high speed data acquisition and storage system is based on Labview. It can not only achieve high accuracy and high data rate but also use the software and hardware synchronization trigger to complete the multi-channel continuous real-time monitoring of the acquisition and storage periodic signal. Which is similar to the function of the oscilloscope. This system is based on high speed data acquisition card of NI company and Labview 2012 for PC software development platform. Data acquisition card is used to finish data acquisition of periodic signal through the serial port. It also collect data upload to upper computer. Upper computer collect data for storage display and analysis to realize the real-time monitor of multi-channel analog. The design of the sampling channel is 2, the sampling rate up to 200M/s, the sampling precision is 12 bits, and the sampling depth is 2000. Lots of verification prove that the design has good compatibility, performance and stability of the collection. Data error is negligible by analyzing the data collected. More importantly, the design can be as far as possible to restore the actual signal source data without distortion. This paper provides a portable design for high speed data acquisition, which can be widely applied in the engineering of modern test and measurement technology.
Highlights
Nowadays, the mainstream design in the traditional data acquisition system has two ways.One of which is to utilize data acquisition card and PC system architecture design, the other is based on MCU and PC system architecture of design [1]
The high-speed data acquisition and storage system is based on Labview
Fig1: This is a high-speed data acquisition and storage system block diagram based on Labview
Summary
The mainstream design in the traditional data acquisition system has two ways.One of which is to utilize data acquisition card and PC system architecture design, the other is based on MCU and PC system architecture of design [1]. Software and hardware of the synchronous trigger can complete high speed and long time of continuous sampling of periodic signals. The design can store the data in the form of Excel file in order to facilitate subsequent analysis. It provides a good platform for the subsequent analysis 、data processing and data acquisition。. The design is based on using the second development of DLL to achieve high sampling rate [3]. The validation results show that the system has high speed sampling, continuous sampling hardware and software synchronization trigger. It is convenient for users to use the design in the data analysis and data processing. Users can continue to develop on this design to meet their different needs by system programming design
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