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Ioannis Giannoukos, Christos-Nikolaos Anagnostopoulos, Eleftherios Kayafas, Vassili Loumos
DENTAL MEASUREMENTS USING 3D MODELS OF PLASTER IMPRINTS

3D technology is becoming increasingly popular and new applications emerge as well as low cost hardware to enable fast 3D rendering and processing. An emerging aspect of 3D technology is measuring real-world objects that have been digitized in the form of a 3D model. To this end, 3D scanning technology has been introduced to create 3D representations of objects with a minimal error. In this work, we present the process of digitizing a dental plaster imprint to be used in medical applications or e-learning courses. Simultaneously, the error that occurs in each 3D modeling step is presented and discussed. Then, practical 3D measurements of the object are conducted, using open-source 3D processing tools. Our goal is to create a digital repository on the Web which would facilitate dental applications and e-learning.

A. Morando, M. Borsero, A. Sardi, G. Vizio
MODELING AND PRACTICAL SUGGESTIONS TO IMPROVE ESD IMMUNITY TEST REPEATABILITY

Electrostatic discharge (ESD) immunity tests are widely carried out in order to assess the immunity level of several electrical and electronic equipment. ESD is a severe source of interference which can produce damages, upset or failures in any electronic system. One important outcome of the ESD tests is the evaluation of the test uncertainty, mainly the uncertainty contribution associated to the repeatability, that is usually very low. The main problems affecting the uncertainty evaluation are underlined. The aim of the paper is to suggest improvements in the measurement set-up, by means of both practical and modelling solutions.

R. Burlacu, C. Bratescu, S. Ursache, R. C. Ciobanu
EVALUATION OF DIELECTRIC PROPERTIES OF POLYSULPHONE CONTAINING MAGNETITE FOR ELECTROMAGNETIC SHIELDS OPTIMIZATION

The dielectric properties of polysulfone containing magnetite have been measured using a Novocontrol concept. The measurements were taken at two frequency range from 5.61 · 10-2 to 107 Hz at different temperatures and from 0.001 to 3 GHz at temperature room. The structures were then included as active core in classical Salisbury and Jaumann configurations for which have been performed tests in electromagnetic field for shielding capability.

Slavomir Karas, Milan Tysler
MATLAB SOFTWARE FOR HIGH-RESOLUTION MULTICHANNEL ECG MEASUREMENT

High resolution multichannel ECG measurement is necessary prerequisite for advanced diagnostics of various cardiovascular diseases. Special multichannel electrocardiograph ProCardio-8 was developed to obtain ECG signals with desired quality. The system is conceived as a virtual instrument with an external intelligent measuring unit connected to a host PC running dedicated application software. In this paper, the data acquisition software developed in MATLAB version 7 and using the Signal Processing Toolbox is introduced. In the first part of the paper, applicability of MATLAB for fast data acquisition was verified and data throughput between the measuring unit and the PC was estimated using a data source with adjustable data rate. Second part of the paper is devoted to development and optimization of a measuring software module that includes control of the measuring unit, testing of electrode contacts and real time data acquisition, visualization and storage of measured data.

Siman Daniel, Bujňák Juraj, Šimšík Dušan
MONITORING AND CONTROL OF SENIORS’ HOME ENVIROMENT

Paper is focused on the monitoring and communication systems in the households for comfort of seniors and people with disabilities. It is focused on the selected wireless monitoring systems which are located in our Laboratory of Ambient Intelligence at the Technical University of Kosice (TUKE). Purpose of installed systems is to adapt the home environment to main human needs, like correct values of humidity and temperature, avoid dangerous situations like leakage of gas or water, smoke, and monitor users’ health status in their households. Permanent monitoring via web console is available, and it offers another possibility to control home environment. This remote control can obviate risky situations in daily activities of seniors and helps their families to check the health status in their absence. Energy counter is used to review of energy spending of each device turned off and still plugged in. Counter can easily measure how much energy device spend, while idling in standby and then decide what to unplug for savings, what to sell and buy a newer, more energy efficient model, and what to leave. Result of monitoring and wireless communication systems is to improve the quality of life and autonomy of elderly and people with disability living at home alone.

Lenka Szerdiová, Dušan Šimšík, Zlatica Dolná
AN ANALYSIS OF KINEMATIC AND DYNAMIC PROPERTIES OF SPORTSMEN PERFORMING STANDING LONG JUMP

This paper presents results of the study devoted to (1) analysis of impact of upper extremities’ momentum on the jump length and (2) analysis of selected kinematic data changes during the standing long jump. Five young sportsmen participated on the initial study. They have performed standing long jump in two measuring conditions: jump with arms’ swing and jump without arms’ swing. Motion was captured and kinematic data were recorded using 3D opto-electronic camera system SMART (BTS). Trajectory of centre of gravity (COG), velocity of COG, maximal vertical distance of COG, take-off angle together with momentum of upper extremities were analyzed. Selected kinematic data were statistically evaluated using descriptive statistics. Statistical significance of the kinematic data and jump length were analyzed using ANOVA and post-hoc Scheffe test (p<<0.05) in Statistics toolbox of program Matlab. Statistically significant differences were assessed within intraindividual and intraclass comparison of data.

G. C. Sarbu, M. Hagan, M. Cretu
COANDA FLOWMETER WITH ADXL105 ACCELERATION SENSOR

The geometric shape of the Coanda flowmeter produces a continuous, self-induced oscillation at a frequency that is linearly proportional to flow rate. As fluid passes through the meter, it will attach itself to one of the side walls as a result of the Coanda effect. A small portion of the flow is diverted through the feedback passage and travels around to the control port. This feedback flow disrupts the attachment of the main jet to the side wall. The main jet is now free and will attach itself to the other side wall due to the Coanda effect. The feedback action will repeat itself, and in the manner the meter body produces a sustained oscillation. As the main fluid stream oscillates between the two side walls, the flow in the feedback passages cycles between zero and maximum. the cycling of the flow in the feedback passages is detected by a sensor located in one of the feedback passages, while the sensor signal is conditioned by a signal conditioner.

Pasquale Arpaia, Ernesto De Matteis, Carlo Manna
AN EVOLUTIONARY LIFTING SCHEME WAVELET PACKET DECOMPOSITION METHOD FOR MECHANICAL FAULT DETECTION IN ELEVATOR SYSTEMS

The design procedure of a second-generation wavelet packet decomposition, based on an evolutionary approach, is introduced for industrial fault detection. The procedure has been validated by means of an experimental case study for an induction motor used as traction machine in an elevator system. Preliminary results on three mechanical faults related to ball-bearing show encouraging performance.

Pasquale Arpaia, Giovanni D’Addio, Carlo Manna, Giuseppe Montenero
SWARM INTELLIGENCE-BASED ASSESSMENT IN HOME CARE PULMONARY MONITORING

A swarm intelligence-based procedure to detect a critical condition of a patient, affected by a specific disease, at an early stage in absence of clinician, is proposed. The procedure is conceived for a remote health monitoring system for patients at home, where some physiological parameters related to a specific disease are being monitored. A significant variation in the parameters can lead the patient to a critical state, thus the proposed method is aimed at predicting a possible future bad condition of the patient on the basis of past measures. Moreover, different physiological parameters contribute to diverse degrees in dissimilar diseases, thus a swarm intelligence-based method is proposed for optimizing the weight of each parameters for a more accurate diagnosis. The proposed approach has been tested experimentally under the framework of the industrial research project PADIAMOND (Patient Diagnosis and Monitoring at Domicile) funded by EU.

Pasquale Arpaia, Francesco Donnarumma, Carlo Manna
A DIFFERENTIAL DISCRETE PARTICLE SWARM OPTIMIZATION APPROACH TO MODEL PREDICTIVE CONTROL OF BUILDING TEMPERATURE

A differential discrete particle swarm optimization method, aimed at designing a predictive air temperature controller for civil buildings, is presented. The predictive control allows the controller outputs to be computed in order to optimise the future behaviour for a heating/cooling plant in a building, regarding set-point tracking and control effort minimization to save energy. The controller is able to predict the building environmental conditions over a specified time interval, thus mathematical models describing the indoor building climate, as well as predicting the outside weather, are used. In this paper, the proposed design method is compared with a standard particle swarm algorithm, and preliminary experimental results are discussed.

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