Laktionov I. The computerized information-measuring system of the industrial greenhouses soil physical parameters with destabilizing influences compensation

The dissertation is devoted to development and research of methods and means of accuracy improving of the computerized information-measuring systems of protected ground physical parameters by taking into account and compensation of dominant destabilizing factors effects in the production greenhouse environment. The measuring method for protected ground moisture ranging from 30 to 90 % under production conditions of greenhouses has been enhanced. It is based on the conductometric method of layer-by-layer sensing in alternating electromagnetic field. The developed method allows improvement of measurement accuracy compared with existing serial counterparts by 20 %. The measuring method for protected ground acidity ranging from 5 to 8 units has been improved, which allows computerized pH measurements with the necessary survey period under production conditions of greenhouses in soils with the existing moisture level. It is based on the direct potentiometry method with the combined glass pH-electrode usage in accordance with regulated metrological documentation. Structural and algorithmic organization of the computerized meter of greenhouse soils physical parameters has been investigated based on study and synthesis of its subsystems functional maintenance. It provides comprehensive moisture, acidity and temperature measurements with destabilizing effects compensation.