Data Acquisition And Analyzing System In Labview

The combination of computer technology and technology of test instruments results with the appearance of a new test instrument, virtual instruments (VI). The software strategy of VI is the developing trend of the third generation of automatic test system. Thanks to VI technology, the hardware and software resources can be shared, various automatic test system can be built rapidly, and signal analysis, data processing and graphicalized display can be carried out conveniently. The test system is developed under 2000 environments Windows, and has compiled data acquisition and memory module In terms of the subject content, and compiled program has realized non- NI's drive hardware by means of the program of hardware control, the data sampling program is compiled according to the actual use condition.The system has provided abundant data analysis functions, and can carry on the detail explanation to the system data analysis function. Having introduced the data returns put, data pre-processing and data statistical analysis, spectrum analysis and power spectrum analysis. The expected design requirement achieve by way of having verified the reliability of system data analysis according to the analysis of standard signals.This paper quality derivation to according to the linear time invariant system fits the overlay principle the meeting an emergency type survey energetically interference equation of system, with Cramer's principle resolution interference equation, gets the survey power apparatus transverse interference mathematical model. By way of doing the demarcation to surveying the power apparatus, the result is demarcated in the analysis, and analyses the experimental error and has given out the reliability of software system.According to turning of PCBN's GCr15's bearing steel cutting experiment, carry on the analysis of data result reaching the general law of hard form cutting, and verify the reliability of the system of this development further, and has marked perfect this system by way of applying this software. The automatic test system based on VI can accomplish the auto-test of flowrate and so on with one computer, which reduces the test cost, improves the test efficiency, enforces the system flexibility and facilitates the experiments.