Baraban S. Method and device for input control of structure-sensitive parameters of amorphous semiconductors

The research object is the process of converting petroleum products humidity to frequency signal in sensitive semiconductor structures. The research purpose is providing quality of the petroleum products by controlling the humidity with remote transmission of measurement results. Methods based on the use of mathematical physics, semiconductor physics, logarithmic and differential calculus, theory of complex variable functions and theory of nonlinear circuits calculation. The theoretical results - the method of petroleum products humidity measurement based on the use of measuring conversion "humidity-frequency" based on the reactive properties of transistor structures with negative resistance is improved. For the first time mathematical models in the analytical form of the primary converters, such as capacitive cylindrical structures, which allowed to determine dependence of the value of electric capacitance on the petroleum products humidity are developed. For the first time mathematical models of self-oscillating petroleum products humidity control devices based on capacitive cylindrical structures are developed and the analytical dependences of conversion functions and sensitivity equations are obtained, which allowed to create petroleum products humidity meters with the wireless signal transmission on distance. The practical results - the new class of high-sensitivity means for measurement and control of petroleum products humidity on the basis of reactive properties of transistor structures with negative resistance is created and the microprocessor humidity control system of the petroleum products is developed. The results of dissertation research are introduced in OOO "Credo" (Vinnytsia) and OOO "Nemiroff tank farm" (Vinnytsia). The application field is petroleum industry.