Open AccessA new method of determining the state of water and agricultural areas in real time
Author(s) -
N. S. Myazin,
В. В. Давыдов,
V. V. Yushkova,
Vasiliy Yurevich Rud
Publication year - 2019
Publication title -
aplinkos tyrimai, inžinerija ir vadyba
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.223
H-Index - 5
eISSN - 2029-2139
pISSN - 1392-1649
DOI - 10.5755/j01.erem.75.2.22352
Subject(s) - signal (programming language) , relaxation (psychology) , spectrometer , computer science , agriculture , nuclear magnetic resonance , state (computer science) , environmental science , simulation , physics , algorithm , optics , psychology , social psychology , ecology , biology , programming language
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, because when working on farms or in fields there are situations when it is physically impossible to deliver samples for research to a stationary laboratory (results are needed urgently or samples can change their properties during transportation). A brief review of the existing methods for monitoring the states of media in the express mode was carried out, their shortcomings were revealed and a new technical solution to this problem was proposed. For a small-sized NMR spectrometer, a new magnetic system and a signal registration circuit have been developed, which makes it possible to detect the NMR signal at different frequencies, thus registering the signal spectrum. In addition, this design also allows measuring the longitudinal and transverse relaxation times of the medium. With the help of the proposed technique, studies of various media have been carried out; the results of these studies are presented.