Вимірювач різниці фаз на програмованих логічних інтегральних схемах

Abstract

In the master's qualification work the analysis of the publications devoted to theoretical and experimental research of measuring instruments of a phase difference, and also the analysis of modern methods of definition of a difference of phases on the programmed logical integrated circuits is carried out. The analysis of the existing methods and means of construction of phase difference meters on the basis of which the choice of the method of phase difference measurement is substantiated is carried out in the work. An analytical model of the parametric method for determining the phase difference of quasiharmonic signals is considered. A digital phase meter on a programmable logic integrated circuit has been developed, which is designed to determine the phase shift of currents and voltages in various electronic radio measuring equipment, calculate the phase difference and display the results of calculations of measurements. Mathematical modeling of the blocks that make up the phase meter on the FPGA in CAD Quartus II is carried out. The results of the presented research make it possible to use the design of digital phase meter units on a programmable logic integrated circuit to create high-speed and accurate radio meters, and models of such digital units can be used to build a variety of radio and telecommunications devices and systems. Schematic and technical solutions and constructions of digital phase meter units on a programmable logic integrated circuit are presented. A digital phase meter on a programmable logic integrated circuit has been developed, which practically eliminates the shortcomings of digital phase meters, which limit the scope of their practical application. It allows you to measure the phase shift angle not only between voltage and current, but also between two voltages or two currents. The fifth section describes the recommendations for occupational safety and health when working with this device. In the sixth section, the calculation of the cost of production of the device and the efficiency of the investment.