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UDC 621.317

DEVELOPMENT OF SPECIFIC MEASURER SOIL RESISTANCE

L. R. Grigoryan, Ph.D., Associate Professor of the Department of Physics and Information Systems, Kuban State University, Krasnodar; This email address is being protected from spambots. You need JavaScript enabled to view it.
N. M. Bogatov, Dr. Sc. Mr., Professor Head of the Department of Physics and Information Systems, Kuban State University, Krasnodar; This email address is being protected from spambots. You need JavaScript enabled to view it.
A. L. Grigoryan, a student of the biological faculty of Kuban State University, Krasnodar; This email address is being protected from spambots. You need JavaScript enabled to view it.

In this article the problem of constructing a soil resistivity meter is considered. The aim of the work is to find the optimal circuitry of the soil resistivity meter taking into account both the current spreading in the soil and the transient processes occurring in. Based on the theory of electrical prospecting the initial concepts of measuring soil resistivity are considered and the requirements for selecting the frequency of the sounding signal of the instrument are determined. The structure of the soil resistivity meter is proposed, the features of which are the total galvanic isolation of the current terminals of the test signal generator from potential terminals of the device, the use of synchronous detection and the sigma-delta of the analog-digital converter of the measuring signal. Instrumental and methodological components of the device error are considered,
methods for their minimization are proposed.

Key words: circuitry, meters, earth resistance, grounding, current spreading, transient processes.

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