Implementación de un sistema de compresión, transmisión y recepción de datos utilizando dispositivos de radio definido por software (USRP) para evaluar el rendimiento de los radio enlaces usados en medición eléctrica inteligente

Abstract

This project describes the implementation of a transmitter - receiver system to send data from the reading of electricity consumption generated by smart metering, in order to analyze the coverage, capacity and attenuation of the radio links used to transfer reliable and available data. . To carry out this project, we worked with LabView allowing us to compare and understand the behavior of the reception of information from radio links when transmitting usable data through the VIs (Virtual Instrumentation) top Tx and top Rx that National Instrument offers. The power levels captured by the smart meter are stored as data, used to define the behavior of the load curve with respect to time. Using mathematical algorithms, by means of the wavelet transform the data recovery is obtained with which the curve is made with respect to time. The data sent in QPSK is displayed on the constellation diagram. For the operation of the system, VERT 450 antennas are used that work in frequency ranges of 1.71 - 2.2 GHz, these are connected to the USRP equipment of National Instruments and these in turn in ethernet communication with two computers. Taking into account, according to the manufacturer, these teams work at their best performance with temperatures below 24 ° C, this project was carried out in an environment with a temperature of 20 ° C.