Martin Cerny

Sensor Network for Measurement and Analysis on Medical Devices Quality Control

The theme is the long-term measurement and verification of technical correctness shaker function of blood derivatives with subsequent signal analysis. We are scanning and processing signals containing information about the vibration shakers grids. To capture these signals is used accelerometers and measured data is then transmitted wirelessly via ZigBee technology from the mixer to the computer where the data is transmitted using TCP/IP communication to remote sites in the measurements. The data from the server, then shared the results to clients for processing. As a measurement, visualization and communication software has been used LabVIEW, which allows you to connect and communicate with the database created.

The HomeCare and Circadian rhythm

The HomeCare is a special monitoring system of the basic life functions. It has been primarily designed to take care for elderly people. But many of the designed devices could be used in the other branches of biotelemetry. Our HomeCare system is designed with respect to user comfort and it uses as cheap technical solutions as possible. In cooperation with the Ostrava University a Homecare Testing Flat has been realized. There are tested our Homecare solutions in vivo. This article is focused on the designed HomeCare system, on measured parameters and on used wireless technologies. The Circadian rhythm measurement and its usage in the HomeCare system are discussed in the article too.

Design and Implementation of Textile Sensors for Biotelemetry Applications

The sensing of biological signals is very actual theme. Especially bioelectrical signals are commonly measured for the evaluating a health status of a man. This article is focused on the analysis and design of sensing electrodes by the use of unconventional materials for a long term bioelectric activity measurement with advanced capabilities in a transmission of signal, time-impedance stability and low half cell voltage.

Continuous Noninvasive Blood Pressure Measurement by Near Infra Red CCD Camera and Pulse Transmit Time Systems

The need of continuous blood pressure measurement is usable in wide spectrum of applications from physicians practice to home care applications. Many types of blood pressure measurement devices can be bought in electronics shops. All such devices are contact measurement devices which need to be in contact of human body (hand or foot mainly). Secondary they allow only one measurement per several minutes interval (typically ones in 10 minutes). Our goal is to develop a small device for noninvasive continuous measurement of blood pressure. This device must be a small battery powered embedded system which measure a blood pressure during a long time period and send this information remotely to operator’s stations. We would like to try two systems of blood pressure monitoring. The first one is system with NIR CCD camera (Near Infra Red), which measure the wide changes of the blood vessels and the second one is system, which measure the pulse transmit time (PTT). At the end we can compare the systems and get information, which system will be a right way to obtain exact continuous blood pressure information.

Automatic Ranking of Eye Movement in Electrooculographic Records

The goal of the work is eye movement analysis in electrooculographic records. This analysis can be used as supplement method of EEG for variant neurological diseases diagnosis. During sleep eye movement ranking is used as one of main criteria for human sleep phase rating. This work is concerned on concept and realization of system for automatic ranking of eye movements from electrooculographycal records using time domain analysis. The main goals are concept, realization and function validation of new algorithms for eye movement evaluation. Resulting system should automatically search for eye movement beginnings and rank them correctly. In addition the system should detect artefacts evoked by eye-winks.

Notice of Retraction Movement Activity Monitoring of Elderly People

Remote home care systems, which takes care about elderly people are going to be very necessary and useful in a few years. The population gets older and we need to solve problem how to take care about our related elderly. This article is mainly focused on movement activity monitoring of elderly people in their flats, which are equipped by our Homecare System. This system consists of PIR sensors, TILocation Engine solution and own optoelectronic bars placed in doorframes. The data interpretation algorithm is proposed too.

Methods for derivation of orthogonal leads from 12-lead electrocardiogram: a review

Abstract Vectorcardiography (VCG), as an alternative to standard 12-lead electrocardiography (ECG), represents the electrical activity of the heart. Previous studies on VCG document that VCG criteria for the diagnosis of, for example, myocardial infarction (MI), ventricular hypertrophy and ischemic diseases, are superior to the corresponding 12-lead ECG criteria. Its use in clinical practice is not common because it requires the placement of additional electrodes. However, VCG leads can be derived from standard ECG by using mathematical transformations. This paper reviews the published works on transformation techniques for derivation VCG from 12-lead ECG, their historical evolution and their importance in todays clinical practice. Different kinds of criteria for evaluation accuracy of transformations are briefly described and the accuracy of individual techniques discussed.

Circadian Rhythm Evaluation Using Fuzzy Logic

Useful information about person’s behavior and its changes provides the measurement of the physical activity of the monitored person in flat. The identified changes are cyclic with a period of approximately 24 hours – this is Circadian Rhythm of Activity, CAR. In the event that we correlate CAR with information about the type of room and activities envisaged in this room, we can define the circadian rhythm (CR). The CR evaluation is made by different mathematical and statistical procedures now. Such systems do not mostly have predictive character.

Advanced CT and MR image processing with FPGA

The CT and MRI image processing is a task with high requirement of computation time and computation speed. The calculation process in the most cases consists of various steps that are inherently parallel. There is opportunity to use parallel programming implemented in standard computer with more than one core. The more efficient way is to use real parallel signal processing. The only hardware that allows parallel data processing is FPGA. This article deals about this possibility. It is shown in the application on real problem in the image processing field. The first there is described the methodology of image processing in the application on CT (MRI) images of the head. The task is to count the ratio of intracranial fluid in the skull. It is important for child neurology diagnostic. The second part deals about the FPGA and its contribution to solving this task in the real parallel hardware system.

Sensitivity Analysis in Sensor HomeCare Implementation

The sensing of biological signals is very actual theme. Especially bioelectrical signals are commonly measured for the evaluating a health status of a man. This article is focused on the analysis and design of sensing electrodes by the use of unconventional materials for a long term bioelectric activity measurement with advanced capabilities in a transmission of signal, time-impedance stability and low half cell voltage. The advantages of this matter are in development also the electrodes to build up the sensing element for electrochemical matter detection. The possibility of glucose and cholesterol detection in cheap production process seems to be possible.