Analog Signals Period, Frequency and Phase Shift Measurement Based on Reconfigurable Modules in Technical Diagnostics Systems

The report substantiates the feasibility of using reconfigurable modules (R-modules) National Instruments Corporation (NI) for measuring the values of controlled parameters and subsequent processing of the data obtained during diagnostics of complex technical systems. A wide range of controlled parameters, as well as a large volume of input measurement information and the need for its analysis in real time when conducting diagnostics of complex technical systems leads to the need to use complicated measuring and computing complexes for acquisition and processing input data. It is possible to simplify the solution of the problem of measuring and analyzing input data by implementing measurements and data processing using optimal hardware and software. Algorithms for determining the period, frequency and phase shift of bipolar analog signals are proposed and their simulation is carried out using the LabVIEW NI graphical programming environment. Virtual instruments for measuring the period, frequency and phase shift of signals based on NI I/O R-modules have been investigated and developed using LabVIEW. The advantage of this approach is the use of standard hardware based on industrial or personal computers and R-modules programmed by LabVIEW for the development of technical diagnostics systems.