The Development And Design Of Multi Channel Data Acquisition System Based On CompactRIO

With the rapid development of technology,new technologies are emerging.In recent years,virtual instrument technology slowly penetrate into our lives,to cover a variety of areas,and gradually mature.Since the virtual instrument technology with low cost and high reliability,which has been widely used at home and abroad.The main contents of this paper is mainly based on National Instruments(National Instruments)NI Compact RIO company's new highly efficient and reliable data acquisition equipment for the hardware platform,the company developed using NI LabVIEW(Laboratory Virtual Instrument Engineering Workbench)is a software development platform,virtual Instrument and its related techniques to the design of multi-channel data acquisition system synchronization.The main contents are divided into the following sections:1 To begin with,the paper introduces the concept of virtual instrument technology,virtual instrument structure,characteristics and development of related technologies at home and abroad.Explains the purpose and significance of this design.As the traditional complex process equipment,software development is extremely difficult,making it difficult to get widely recognized.Therefore,the development of virtual instruments "and control-Transfer" data acquisition system is not only economically favorable natural advantages,but also very practical applications.2 Secondly,it analysis of the design of the hardware and software needed for programming languages and CompactRIO platform.Introduced LabVIEW features and how simple and efficient to achieve the goal function.Compact RIO main components of language and how to use LabVIEW to drive and stable data collection.3 Thirdly,the theoretical study of the data collection and select the appropriate capture card collection.Developed primarily to achieve functional acquisition system and the whole idea of the system.They include: setting timing acquisition start time and stop time;simultaneous acquisition of data between multiple channels;mining.Additionally the system can also signal filtering,amplification,frequency spectrum analysis,parameter control and measurement signal processing.4 In addition,in order to achieve using LabVIEW programming language underlying CompactRIO FPGA compilation work,as well as the realization of the RT function display and control settings HOST end PC's.5 Finally,in the laboratory and pool simulation debugging,data collection at sea.Finally,the signal processing algorithm research,including research Trend signal processing algorithms to eliminate;Theoretical study FFT;LOFAR spectrum balancing algorithm algorithm analysis and background research..Data results show that the design is expected to complete its objectives.Not only have a better understanding of the virtual instrument,but also to verify its performance is more superior,has some practical value.