A new method of determining the state of water and agricultural areas in real time

Abstract

The paper discusses the technique of environmental condition monitoring based on the phenomenon of nuclear magnetic resonance (NMR). Express control is an integral part of agriculture. It is especially necessary when working on the farm or in the fields. In this case, situations often arise when it is impossible to deliver samples for research in a stationary laboratory (e.g., results are needed immediately or samples can change their properties during transportation). Now, there are many methods for monitoring the states of media in the express mode. Therefore, a brief review of these methods as well as their limitations was carried out. To overcome these limitations, a new technological solution was proposed for the creation of an NMR spectrometer. The proposed compact NMR spectrometer allows measuring the longitudinal and transverse relaxation times of the medium. To enhance its functionality, a new magnetic system and a signal registration circuit have been developed. These improvements allow detection of the NMR signal at different frequencies, thus registering the signal spectrum. With the help of the proposed device, studies of various media have been carried out; the results of these studies are presented.