In this article time-type optoelectronic analog-to-digital converter of relocations is considered. The block scheme of the converter is presented. It’s also presented the functional dependence of a time interval and digital code on measured relocation.
The analysis of review materials and international normative-methodical documents devoted to methods of the areal (zone) characterization of topography and textures of rough surface. The issues of application of special filters for elimination of undesirable transverse components of the measurement surface are considered. The modern standardized approach to separation of roughness and waviness components on the primary (basic) surface is shown.
The basic information about optical dielectric microresonators with whispering gallery type modes is presented. The manufacturing methods, applications, and a brief history of the most important last time achievements in this rapidly developing area are described. Such microresonators can be used in highly stable sources of microwave signals and optical frequency comb generators allowing to link the optical and radio frequency standards.
Considered the principle of operation, advantages and disadvantages of resonator sensors. Proposed a method of correction of complementary errors of resonator sensors. An experimental research of the proposed method on the string resonator sensors of linear displacements.
Questions of the even temperature distribution creation in the volumetric materials with different dielectric losses placed in the beam-type microwave device are examined. The volumetric material was irradiated by two types of antennas which provided perpendicular and parallel flux direction of the electric-field vector relatively to the material's surface. Experimental data on the temperature field distribution in the volume of material is presented. It is shown that the total temperature dispersion is less than 5ºC inside the material heated up to 80ºC.
The circuit of developed optoelectronic transducer of displacement into the time interval with compensation of conversion error occurring due to carrier frequency generator amplitude instability – is considered. The compensation efficiency is determined.
The optoelectronic transducer of displacements to time interval with insertion of the carrier signal into radiation source is considered. In the developed device the amplitude errors arising from instability of light flux and the errors of single-channel raster modulator are compensated.
The optoelectronic converter of movements in a time interval with differential way of compensation of errors of the single-channel raster modulator arising because of not stability of dark tension of a photodetector and level of tension of a source of constant tension is considered.
The problem of methodical provision of a surface quality control, measurement of its roughness, a form and mutual disposition of surfaces required at various stages of microelectronics products manufacturing are considered. The specific features of measuring problems solved by scanning probe microscopy and high resolution 3D interferometry methods and instruments are analysed. The structural peculiarities of characterization of atomically clean and real surfaces are also considered.
The paper discusses the method for measuring dielectric liquids level using an equivalent circuit of capacity level sensor and an equivalent circuit of long connection wires. This method allows to find out influence disturbing factors of long connection wires affecting the measurement accuracy and to increase measurement reliability. The paper also describes requirements to capacity level sensor, formulas for capacity filling level sensor and equivalent circuit of long connection wires calculation, components of measurement error.
The time-type optoelectronic analog-to-digital linear displacements transducer with different methods of frequency errors correction is considered. The function circuit of the transducer with automatic frequency control is presented. The main functional dependences and the assessment of efficiency of compensation are given.
The experimental research results of the basalt cardboard thermal treatment with the microwave electromagnetic energy application are presented in the article. The weight change diagrams of the basalt cardboard samples during the drying process are given. Changes in the temperature behaviour are analyzed on the surface and inside the samples depending on coupling medium. An advice on the drying process parameters improvement is given.