Devices for position detection

The work deals with design and implementation of a wireless device for position sensing. Part of this work is concerned with the analysis of the measurements. This study also provides an overview of the principles of measuring accelerometers and wireless transmission of data from the sensors to the PC. Selection of appropriate components, circuit design and programming applications in the Maltab is considered as well. The paper is finalized with the testing of the equipment on a game cube and evaluation of the obtained results

Mouse Tracking Algorithm Based on the Multiple Model Kalman Filter Design and Implementation of Ophthalmological Corrector

The article deals with a software implementation of the ophthalmologic corrector. The corrector is perceived as a medical device for a correction of the amblyopia. During the exercise, children are requested to draw a template, which is placed on a metal board. This therapeutic procedure has been used in clinical practice for many years. There is a big disadvantage of using the mentioned device. There is no any manageable way for storing and archiving patient’s data. Furthermore, exercise must be performed on the clinical workplace. Due to these facts, we are interested in software design and implement the ophthalmologic corrector. The proposed corrector is based on a mouse-tracking algorithm, which is able to perform the tracking of the mouse movement in the form of continuous line. Formed line overlaps the selected template. This procedure allows the identification of the real time accuracy and distance of the generated line from a given template. Furthermore, the algorithm allows for storing the achieved results for further data processing. It is a required tool for assessment and plan of therapeutic treatment in the field of ophthalmology

Technical Development of a New Semispherical Radiofrequency Bipolar Device (RONJA): Ex Vivo and In Vivo Studies

The aim of this study is to inform about the development of a new semispherical surgical instrument for the bipolar multielectrode radiofrequency liver ablation. Present tools are universal; however they have several disadvantages such as ablation of healthy tissue, numerous needle punctures, and, therefore, longer operating procedure. Our newly designed and tested semispherical surgical tool can solve some of these disadvantages. By conducting an in vivo study on a set of 12 pigs, randomly divided into two groups, we have compared efficiency of the newly developed instrument with the commonly used device. Statistical analysis showed that there were no significant differences between the groups. On average, the tested instrument RONJA had shorter ablation time in both liver lobes and reduced the total operating time. The depth of the thermal alteration was on average 4 mm larger using the newly tested instrument. The new radiofrequency method described in this study could be used in open liver surgery for the treatment of small liver malignancies (up to 2 cm) in a single application with the aim of saving healthy liver parenchyma. Further experimental studies are needed to confirm these results before clinical application of the method in the treatment of human liver malignancies

Morphological Segmentation of Retinal Blood Vessels and Consequent Tortuosity Extraction

Investigation of a retinal blood vessel system is frequently discussed issue in the field of the clinical ophthalmology due to it serves as reliable indicator of retinal damage. The analysis deals with two coherent tasks regarding retinal blood vessels system. Firstly, the algorithm based on the morphological operations is proposed to be able to perform precise extraction and localization of individual blood vessels for further processing. On the base of this segmentation procedure, e obtain a segmentation model differentiating the retinal blood vessels from retinal background. The second step deals with the major output of the analysis it is tortuosity extraction as it is parameter describing curvature of blood vessels. The tortuosity allows for a description of each vessel element by level of a curvature. It is significantly beneficial for clinical practice, because on the base of blood vessel curvature, physiological or damaged retinal system can be recognized

Telemetry system of biological parameters

The mobile telemetry system of biological parameters serves for reading and wireless data transfer of measured values of selected biological parameters to an outlying computer. It concerns basically long time monitoring of vital function of car pilot.The goal of this projects is to propose mobile telemetry system for reading, wireless transfer and processing of biological parameters of car pilot during physical and psychical stress. It has to be made with respect to minimal consumption, weight and maximal device mobility. This system has to eliminate signal noise, which is created by biological artifacts and disturbances during the data transfer

Flexible teg on the ankle for measuring the power generated while performing activities of daily living

In this work, a commercial flexible thermoelectric generator (f-TEG) was used to harvest the body thermal energy during the execution of activities of daily living (ADL). The f-TEG was placed at the level of the ankle, and the performed activities were sitting at the desk and walking. In the first stage of measurements, tests were performed to choose the value of the resistor load that maximizes the power output. Then, while performing ADL, the values of generated power were in the range from 100 to 450 µW. Moreover, while users are walking, the pattern of the output signal of f-TEG is compatible to a sine function with frequency close to that one of human gait. This preliminary result may represent a new way to study the movement of human body to recognize ADL

Diagnosis support method of pletysmographical records with the use of framework tenets

The aim of this study is the processing and evaluating of plethysmographical records giving important information about the blood vessel function. Result of this study is to present the methodology for classifying the records by means of mathematical methods that would contribute to systematic evaluation of what has been found by finger plethysmography. Thereafter the experimental expert system based on framework systems serves to determine the diagnosis on the basis of previous mathematical processing is introduced. The goal of the project was also creation of application by the form of the extension of kernel for the use of framework that is determined for support of control and information systems development in the area of signal processing, elaborate and describe the methodology of extension hereof setting in the nature of specific applications. Beyond above-mentioned outputs the solution of the project should give the specific knowledge about the usage effectiveness of evolutional frameworks. Fundamental implementation idea is based on the usage of MATLAB as the basis for extension of common kernel