Stanislav Slosarcik

Algorithm of nonrespirable dust fraction suppression using an optical transducer of dust mass concentration

An algorithm for processing information from an optical transducer of dust mass concentration is presented. It processes measurements of electromagnetic radiation ranging from the visible to the infrared, which is scattered by the smaller respirable dust particles but which is not similarly effected by the larger nonrespirable dust particles of the same material. The algorithm is based on discretizing the wavelength of the radiation scattered by the dust into the finite number of the wavelength bands. The mass concentration of the respirable dust is obtained as the weighted sum of radiant fluxes occurring in the wavelength bands. The Mie theory has been used for the description of the radiation scattering by the dust particles. Computational simulation results are presented to demonstrate the validity of this algorithm. The algorithm is suitable for real-time measurement.

Technology and Application of 3D Shaped LTCC Modules for Pressure Sensors and Microsystems

This paper deals with shaping technology of LTCC (low temperature cofired ceramics) and as well on analysis of the possibilities of sensors in 3D shaped modules. Analysis of marginal possibilities of LTCC ceramic shaping was realized on a sample with various bending angles and various layer numbers, where thick-film conductive paths were present. The applicability of the obtained results was demonstrated by the development of a 3D shaped module with a thick-film pressure sensor.

Capacitive sensor for measuring of intra-abdominal pressure

The article deals with the design of capacitive pressure sensor for automated measurement of intra-abdominal pressure by noninvasive method. Capacitive pressure sensor consists of a glass tube with evaporated thin film electrodes. The capacity change is given by the level change of displaced fluid in the tube. For capacitive sensors with different inner diameter of tubes were experimentally found calibration curves. Capacitive sensor is subpart of an automated measuring system for the clinical application of intra-abdominal pressure measurement.

Virtual factory for PCB and thick-film circuits fabrication

The contribution describes practical implementation of virtual processing approach in education of electrotechnology, aimed to printed circuit boards (PCB) and thick-film circuits fabrication as a part of the virtual electrotechnology factory building. Appropriate tools are described for particular components development. The current knowledge in the field of web publishing and animation technology was used during development. The study texts supported by animations and video materials of technological procedures are the opus locatum at virtual factory development.

Chosen electrical and reliability properties of thick film photoimageable components

This paper presents the correlation between electrical and reliability properties and processing conditions. Fodelreg photoimageable technology as an extension of traditional thick-film process providing a higher line resolution, has been considered in the field of unconventional application based on both 3D bent multilayers and thick film mono and multilayer inductors construction with a resolution about 150 mum. Common denominator of two different ideas is our experience with thick film photoimageable conductors and study of chosen electrical and reliability properties. The developed and adapted LTCC technology based on photoimageable technology has produced about 100 mum wide lines that are composed in shaped 3D bent multilayer structures. Chosen electrical properties of inductors based on photoimageable conductor has been evaluated including their ageing reliability test

Properties and utilization of 3D bent-multilayer hybrid structures

The specific properties and advantages of the LTCC can be profitably included into the MCM (multi chip module) production technology, sensorial and three-dimensional application using multilayer structures. This paper deals with special treatment of LTCC, which is aimed at construction of 3D bent-multilayer hybrid structures for sensorial applications. The paper refers to general trends and gives an overview of hybrid technology progress and results of reached experiments: experimental analysis of 3D bent multilayer structures and their production technology, inside conductive inspection at bending vertex location represented by the non-destructive measurement of the transitional resistance between two conductive layers, measurement principle of the values of interconnection resistance and principle of the law value interconnection resistance based on computer aided semiautomatic measurements. The 3D bent-multilayer hybrid structures find utilization in sensorial application.

Heat dissipation based on LTCC-HTCC heterostructure

Articles deals with technology of realization of LTCC-HTCC heterostructure based on different thermal conductivity of substrates as well as with fabrication process of inner channels on the interface of heterostructure. In the practical part the results of measurements on realized samples for the purpose of use in field of heat dissipation from electronic microstructures are presented.

The design concept of system integration based on heterostructure

This study shows technological realization of heterostructure LTCC structure - HTCC substrate. Heterostructure realization results are analyzed regarding the application of LTCC ceramics and HTCC substrates where possible solution is local heat dissipation from power elements. Technological solution has been applied during the 3D integrations of mobile mini-machine control electronics in a System on Module (SoM) assembly.

System for control of limb straining in rehabilitation process

The paper deals with construction of rehabilitation insole for medical use. The purpose of its application is in time indication of rehabilitated leg overloading. The patient has to follow the limited burden of the injured leg at a certain stage of the rehabilitation process. As recommended by doctor, rehabilitation specialist defines partial load of limb from 10 kg to full load with adjustable insole support. Rehabilitation insole monitors loading of the leg and provide the feedback to the patient. The system is fully integrated and with the exception of charging it needs no special approach during application by the patient.

Technological possibilities of LTCC ceramic for field of sensors

This paper is focused on shaping technology of LTCC (Low Temperature Cofired Ceramics) and their marginal possibilities in 3D shaped modules. The first part of paper deals with analysis of marginal possibilities of LTCC ceramic shaping. There were realized samples with various bending angles and various number of layers with embedded thick-film conductive paths. Applicability of obtained results was attested on development of 3D shaped module with thick-film pressure sensor.