Analýza možností použití technologií IoT pod hladinou vody včetně demonstrační úlohy

Abstract

The thesis investigates the possible application of IoT technologies underwater. It describes IoT technologies LoRa, IQRF, NB-IoT, their basic features and principles of operation. Then it defines the concept of RSSI. The paper describes in general terms the transmission of high frequency signal underwater, its characteristics, advantages and disadvantages of application. It compares RF data transmission with proven methods of underwater data transmission. The theoretical analysis deals with the transmission of 868 and 433 MHz signals underwater and calculation the range of each technology when transmitting the signal from water to air. It also designs and implements experimental RSSI measurements for LoRa, IQRF and NB-IoT technologies underwater. The practical analysis evaluates the measured data and in the final evaluation compares the measured data with the theoretical assumption. The conclusion of the paper summarizes the possibility of using IoT technologies under water, in which cases it is reasonable to apply these technologies and in which cases it would be appropriate to choose different data transmission methods.