Wyniki wyszukiwania - BazTech

1

Model systemu detekcji przeszkód i mapowania środowiska dla autonomicznych pojazdów podwodnych

Kot Rafał, Piskur Paweł, Sigiel Norbert

Pomiary Automatyka Robotyka

|

2023

|

R. 27, nr 4

19--26

PL

W artykule przedstawiono model systemu detekcji przeszkód i mapowania środowiska, bazujący na przetwarzaniu obrazowym w czasie rzeczywistym, przeznaczony dla autonomicznego pojazdu podwodnego. Model został zrealizowany w oparciu o parametry pracy rzeczywistego sonaru z mechanicznym przestawianiem wiązki Tritech Micron Sonar. Działanie systemu detekcji zostało zweryfikowane z wykorzystaniem matematycznego modelu autonomicznego pojazdu podwodnego poruszającego się w środowisku podwodnym wyrażonym mapą testową przygotowaną na bazie rzeczywistych pomiarów zrealizowanych za pomocą ww. sonaru. Model systemu pozwala wykrywać i zapisywać w postaci mapy, przeszkody znajdujące się w polu widzenia sonaru w czasie rzeczywistym.

EN

This article presents a real-time model of an obstacle detection and environmental mapping system based on image processing for an autonomous underwater vehicle (AUV). The model was based on Tritech Micron Sonar operating parameters with mechanical beam adjustment. The operation of the detection system was verified using a mathematical model of an autonomous underwater vehicle moving in the underwater environment, expressed by a test map prepared based on actual measurements of the above-mentioned sonar. The system model allows for detecting and mapping obstacles in the sonar’s field of view in real-time.

2

Experimental and analytical procedures for the ToF-SIMS measurement data of membranous structures

Skalska Magdalena E., Durak-Kozica Martyna

Bio-Algorithms and Med-Systems

|

2023

|

Vol. 19, no. 1

64--68

EN

Time-of-flight secondary ion mass spectrometry (ToF-SIMS) is a powerful analytical technique with great application potential in biomolecular matter research. SIMS measurements performed on biological samples, due to their complex structure and the content of many small and large atomic molecular compounds, suffer very rich and complex mass spectra of particles, which characterise the content and physio-chemical properties of examined samples. The proper description and understanding of features appearing in the spectra and, consequently, the final data confirming or rejecting the hypothesis put forward in the experiment, largely depend on the experimenter’s correct understanding of the technique itself and its limitations, knowledge of the tested material and its appropriate preparation. These issues mean that obtaining the right answer to the questions posed in the research hypothesis requires not only the correct conduct of experiments but also the appropriate processing of post-experimental data. This study aims to demonstrate the impact of various analytical and experimental procedures applied to reach proper conclusions from TOF-SIM measurements. These are different types of data normalization, the selection of a so-called region of interest (ROI), the selection of representative secondary ions and specific quantification methods, including a combination of experimental parameters. All these aspects were checked and discussed based on the results of the analysis of pancreatic β cells placed in a PBS solution on silicon wafers.

3

Data Acquisition and Control System Based on Scilab Software Environment

Godlewski Marek, Rogowski Krzysztof

Pomiary Automatyka Robotyka

|

2022

|

R. 26, nr 3

49--55

EN

The article presents the data acquisition and control system built using the Scilab software environment which can be an interesting alternative for commercial and very expensive solutions. The system is composed of a National Instruments myDAQ data acquisition device connected to a PC with open-source software for numerical computations Scilab. The proposed system is equipped with Graphical User Interface (GUI) that allows users to process control, visualize and save the acquired data. In addition, the PID control strategy is implemented. Finally, results of laboratory tests verifying the operation of the created system and conclusions are presented.

PL

W artykule zaprezentowano system akwizycji danych i sterowania zbudowany w oparciu o środowisko programowe Scilab, który może stanowić interesującą alternatywę dla komercyjnych i bardzo kosztownych rozwiązań dostępnych na rynku. Układ składa się z karty akwizycji danych myDAQ produkowanej przez National Instruments oraz komputera wyposażonego w oprogramowanie do obliczeń numerycznych Scilab. Stworzono graficzny interfejs użytkownika (GUI), który pozwala na kontrolę procesu, wizualizację i zapis zmierzonych danych. Dodatkowo zrealizowano układ regulacji automatycznej z regulatorem PID. Na koniec pokazano badania laboratoryjne weryfikujące poprawność działania systemu oraz przedstawiono wnioski.

4

The acoustic emission (AE) controlling method of the electric sheet blanking process : a comparative study of selected data mining methods

Kochański Andrzej, Czyżewski Piotr, Moszczyński Leszek

Computer Methods in Materials Science

|

2022

|

Vol. 22, No. 4

189--200

EN

The article presents an experimental stand to assess the state of punch in the process of sheet blanking. Blanking trials were carried out on an eccentric press. During all the trials, there were recorded signals of acoustic emission (AE) that accompanied the process of blanking. For the recorded AE signals, the methodology of data preparation and analysis was presented. On that basis, the results of the assessment of the state of the punch were presented, and they employed five methods of visualization: Andrews curves, Principal Components Analysis, Linear Discriminant Analysis, a modified method of Stochastic Neighbor Embedding and Sammon Mapping. The aim of the work was to assess the possibility of using visualization methods to predict the condition of the tool on the basis of acoustic emission signals in processes carried out in extremely short times.

5

Monitorology – the Art of Observing the World

Malek Miroslaw

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

|

2021

|

Vol. 25, No 2

131--139

EN

We focus on the art of observing the world by electronic devices such as sensors and meters that, in general, we call monitors. We also define main monitoring objectives and pose five challenges for effective and efficient monitoring that still need a lot of research. In the era where compute power like electricity is easily available and easy to use across the globe, and big data is generated in enormous amounts at ever-increasing rates, the question, what to monitor and how, will become ever more relevant to save the world from flood of meaningless, dumb data, leading frequently to false conclusions and wrong decisions whose impact may range from a minor inconvenience to loss of lives and major disasters.

6

LabVIEW based software for verification of the new idea of lining for mine shafts located in salt rock mass

Kamiński Paweł, Ahmad Mahmood

Mining Machines

|

2021

|

no. 3

45--57

EN

High values of salt rock mass convergence might cause serious problems with maintenance of shaft lining located in salt rock sections. The most efficient existing method of negative convergence influence prevention is periodic removal of creeping salt from shaft walls. However, the process of salt removal is problematic in terms of shaft and hoisting system typical operation. A new shaft lining idea allows removal of creeping salt by leaching without the need for stopping the shaft operation. Following paper presents a software, developed in LabVIEW environment and applied in the framework of test facility, designed for purpose of verification of theoretical assumptions of new construction of shaft lining. Developed software consists of applications for data acquisition, based on Event-Driven Queued State Machine pattern, and data processing, designed as Producer-Consumer pattern.

7

A computer system for acquisition and analysis ofmeasurement data for a skew rolling mill inmanufacturing steel balls

Buczaj Marcin, Sumorek Andrzej

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska

|

2020

|

T. 10, nr 4

47--50

EN

The article presents the concept and capabilities of a computer system for analysing measurement data for a skew rolling mill used to produce steel balls. The computer system for data acquisition and analysis consists of cooperating systems designed to perform control and measurement tasks during the operation of a skew rolling mill. Their main task is to collect and record data related to the measured physical parameters of the batch rolling process. This system registers the current and analyses theradial forces and torque acting on the rolled element by the rolling tool. The process of data acquisition, analysis and archiving is carried out by means of anNI USB 6009 measuring card together with the attached systems of transducers and force and torque sensors and a computer with an installed application. The measurement application was developed in the LabVIEW environment.The application algorithm is based on the state machine architecture and enables the configuration of measurement elements and technical parameters, checking the functioning of the control and measurement system and the acquisition and archiving of measurement data.

PL

W artykule została przedstawiona koncepcja oraz zaprezentowane możliwości komputerowego systemu do analizy danych pomiarowychdla walcarki skośnej wykorzystanej do wytworzenia kul stalowych. Komputerowy system akwizycji i analizy danych to współpracujące ze sobą układy przeznaczone do realizacji zadań kontrolno-pomiarowych podczas pracy walcarki skośnej. Ich głównym zadaniem jest zbieranie i rejestracja danych związanych z mierzonymi parametrami fizycznymi procesu walcowania skośnego wsadu. Układ ten umożliwia bieżącą rejestrację i analizę sił promieniowych i momentu obrotowego działającego na walcowany element przez narzędzie walcujące. Realizacja procesu akwizycji,analizy i archiwizacji danych odbywa się za pomocą karty pomiarowej NI USB 6009 wraz dołączonymi do niej układami przetworników i czujników siły i momentu obrotowego oraz komputera z zainstalowaną aplikacją. Aplikacja pomiarowa została opracowania w środowisku LabVIEW. Algorytm aplikacji zostałoparty oarchitekturę maszyny stanu i umożliwia konfigurację elementów pomiarowych i parametrów technicznych, sprawdzenie funkcjonowania układu kontrolno-pomiarowego oraz akwizycję i archiwizację danych pomiarowych.

8

The methodology of acquisition and statistical analysis of data from the process of drying thin wooden elements

Kujawińska Agnieszka, Rogalewicz Michał, Diering Magdalena, Żywicki Krzysztof, Hoffmann Piotr

Drewno : prace naukowe, doniesienia, komunikaty

|

2020

|

vol. 63, nr 205

43--58

EN

This paper presents an original methodology of acquisition and statistical analysis of data from the process of drying thin wooden items, without interference in the manufacturing schedule or process. The research was aimed at reducing the duration of the lamella drying process in a convectional drying chamber, and minimising non-conformities of dry lamellas. The authors discuss the effective application of convectional drying methods, taking into consideration non-homogeneous wood quality resulting from over- or under-drying caused by uneven or insufficient exposure to the drying agent, long duration of the drying process serving to minimise the internal stress of the material, poor efficiency of the drying process, and relatively high operational costs. Based on the tests performed, a quick drying programme is recommended. To reduce the fraction of non-conforming lamellas, the authors suggest that the arrangement of lamellas in the cage be changed so that all lamellas are protected against unconstrained deformation.

9

Open Atlas of Defects as a Supporting Knowledge Base for Cast Iron Defects Analysis

Sika R., Rogalewicz M., Kroma A., Ignaszak Z.

Archives of Foundry Engineering

|

2020

|

Vol. 20, iss. 1

55--60

EN

A significant development of the foundry industry contributes to the creation of high reliability and operational strength castings so that they meet specific standards in accordance with customers’ needs. This technology, however, is inseparably connected with casting defects in finished products. Cast products are subject to various defects which are considered acceptable or not, which is conditioned by the alloy chemical composition and strength characteristics, that is, generally – qualities to be agreed between the foundry and the customer. It is the latter that led the authors to research on designing a tool enabling the most reliable possible assessment of the emerging casting defects, which after proper consultations can be repaired and the casting – sold. The paper presents an original tool named the Open Atlas of Defects (OAD), developed for the last few years to support the evaluation of cast iron defects using Non-Destructive Testing (NDT) casting defects analysis tools (DCC card – Demerit Control Chart, Pareto-Lorenz analysis and ABC analysis). The OAD tool structure was presented as an integral part of the original system module for acquisition and data mining (A&DM) in conjunction with the possibilities of using selected tools for defect analysis support on the example of cast iron casting.

10

Cause-effect Analysis Using A&DM System for Casting Quality Prediction

Sika R., Ignaszak Z.

Archives of Foundry Engineering

|

2020

|

Vol. 20, iss. 2

5--12

EN

The paper indicates the significance of the problem of foundry processes parameters stability supervision and assessment. The parameters, which can be effectively tracked and analysed using dedicated computer systems for data acquisition and exploration (Acquisition and Data Mining systems, A&D systems) were pointed out. The state of research and methods of solving production problems with the help of computational intelligence systems (Computational Intelligence, CI) were characterised. The research part shows capabilities of an original A&DM system in the aspect of selected analyses of recorded data for cast defects (effect) forecast on the example of a chosen iron foundry. Implementation tests and analyses were performed based on selected assortments for grey and nodular cast iron grades (castings with 50 kg maximum weight, casting on automatic moulding lines for disposable green sand moulds). Validation tests results, applied methods and algorithms (the original system’s operation in real production conditions) confirmed the effectiveness of the assumptions and application of the methods described. Usability, as well as benefits of using A&DM systems in foundries are measurable and lead to stabilisation of production conditions in particular sections included in the area of use of these systems, and as a result to improvement of casting quality and reduction of defect number.

11

Terrestrial and extraterrestrial drillings in the 21st century. Research challenges and the way to satisfy them by means of a new research infrastructure at AGH-UST

Kowalski Tomasz, Skrzypaszek Krzysztof, Teper Wojciech, Toczek Przemysław, Złotkowski Albert

AGH Drilling, Oil, Gas

|

2020

|

Vol. 37, no. 3

5--11

EN

Knowing the impact of technical solutions on the drilling process is a very important element in the process of the exploration of new fossil fuel deposits. Drilling equipment used during drilling operations is highly liable to all conditions which prevail in the well bore. The study of the impact of drilling fluid flow with various rheological properties on the strength and work of drill stem components will allow to search for the best solutions. The article describes the design and construction of two boreholes, fill up with 9 5/8" (244.5 mm) and 24" (609.6 mm) casings. The designed boreholes will be a joint part of the drilling laboratory in the S-1 building at AGH-UST in Krakow. Research The research described above can be done in openholes and implemented at the beginning of the design process for drilling works in new deposits. In addition, it will provide an opportunity for all engineers to get to know the behavior of components operating in an open hole.

12

The analysis of own signals of PM electrical machines – example of eccentricity

Barański Marcin

Maszyny Elektryczne : zeszyty problemowe

|

2019

|

Nr 3-4 (123-124)

7--9

EN

This article presents a vibration diagnostic method designed for permanent magnets (PM) electrical machines. Those machines are commonly used in small wind or water systems. The described method is very innovative and unique. Specific structural properties of machines excited by permanent magnets are used in this method - electromotive force (EMF) generated due to vibrations. There was analyzed number of publications which describe vibration diagnostic methods and tests of electrical machines and there was no method found to determine the technical condition of such machine basing on their own signals. This work presents: field-circuit model, results of static tests, results of calculations and simulations.

PL

Praca przedstawia zastosowanie wibracyjnej metody diagnostycznej dla maszyn z magnesami trwałymi. Maszyny te są wykorzystywane w małych elektrowniach wiatrowych oraz wodnych. Opisywana metoda jest innowacyjna i unikalna. Wykorzystuje ona specyficzne właściwości konstrukcyjne maszyn z magnesami trwałymi, tj. indukowanie się SEM pod wpływem wibracji. Przeanalizowano liczne publikacje opisujące diagnostykę maszyn elektrycznych i nie napotkano na metody bazujące na wykorzystaniu własnych sygnałów maszyny do określenia ich kondycji układu wibroakustycznego. W pracy przedstawiono m.in. model polowy, wyniki obliczeń oraz symulacji komputerowych.

13

Sensorless vibration diagnostics of permanent magnet generators – the unbalance example

Barański Marcin

Maszyny Elektryczne : zeszyty problemowe

|

2019

|

Nr 3-4 (123-124)

11--14

PL

Praca przedstawia zastosowanie wibracyjnej metody diagnostycznej dla generatorów z magnesami trwałymi pracujących w stanach asymetrii obciążenia. Maszyny te są wykorzystywane w małych elektrowniach wiatrowych oraz wodnych. Opisywana metoda jest innowacyjna i unikalna. Wykorzystuje ona specyficzne właściwości konstrukcyjne maszyn z magnesami trwałymi, tj. indukowanie się SEM pod wpływem wibracji. W pracy przedstawiono min. podobieństwo maszyny z magnesami trwałymi do czujnika drgań, zawarto wyniki obliczeń, symulacji oraz badań laboratoryjnych. Metoda ta jest przedmiotem zgłoszenia patentowego.

EN

This paper presents a new vibration diagnostic method designed for diagnose of permanent magnets (PM) generators. Those machines are commonly used in small wind, water systems and electrical vehicles. The described method is very innovative and unique. Specific structural properties of machines excited by permanent magnets are used in this method - electromotive force (EMF) generated due to vibrations. In this article several issues will be discussed: the method genesis, the similarity of permanent magnet machines to vibration sensor, mathematical model, and results of simulation and laboratory tests. The method of determination the technical condition of PM electrical machine basing on its own signals is the subject of patent application.

14

Increased vibration level caused by asymmetric loading in PM generators

Barański Marcin

Maszyny Elektryczne : zeszyty problemowe

|

2019

|

Nr 3-4 (123-124)

1--6

EN

The paper presents a new vibration diagnostic method designed for permanent magnets (PM) generators with point operation asymmetry. Those machines are commonly used in small wind or water systems. The described method is very innovative and unique. Specific structural properties of machines excited by permanent magnets are used in this method - electromotive force (EMF) generated due to vibrations. In this article several issues will be discussed: the similarity of permanent magnet machines to vibration sensor, calculations, results of simulation and laboratory tests. The method is the subject of patent application.

PL

Praca przedstawia zastosowanie wibracyjnej metody diagnostycznej dla generatorów z magnesami trwałymi pracujących w stanach asymetrii obciążenia. Maszyny te są wykorzystywane w małych elektrowniach wiatrowych oraz wodnych. Opisywana metoda jest innowacyjna i unikalna. Wykorzystuje ona specyficzne właściwości konstrukcyjne maszyn z magnesami trwałymi, tj. indukowanie się SEM pod wpływem wibracji. W pracy przedstawiono mn. podobieństwo maszyny z magnesami trwałymi do czujnika drgań, zawarto wyniki obliczeń, symulacji oraz badań laboratoryjnych. Metoda ta jest przedmiotem zgłoszenia patentowego.

15

30 km w półtora miesiąca

Guzik Mirosław

Geodeta : magazyn geoinformacyjny

|

2019

|

nr 12

32--34

16

The study of Arduino UNO feasibility for DAQ purposes

Barański Robert, Galewski Marek A., Nitkiewicz Szymon

Diagnostyka

|

2019

|

Vol. 20, No. 2

33--48

EN

Using microcontroller systems becomes a routine in various measurement and control tasks. Their wide availability together with a huge potential of extending their functionality by additional modules allows developing advanced measuring and monitoring systems by non-specialists. However, using popular example codes often leads the user to pass over or not to be aware of the limitations of the system and drawing too farreaching conclusions on the basis of incorrectly performed measurements This paper deals with the problem of choosing the right method for performing measurements using an acquisition system based on the budget Arduino UNO solution. The main assumption was to use the standard, widely available Arduino libraries. The work focuses on the scenario when data should be subject to time and frequency analysis in the later processing. The operating limits of the device were also determined depending on the data transmission method used.

PL

Pomiary wielkości fizycznych z wykorzystaniem układów opartych na mikrokontrolerach stają się standardem. Ich szeroka dostępność wraz z modułami rozszerzającymi ich funkcjonalność daje możliwość budowy zaawansowanych układów pomiarowych i monitorujących przez osoby nie będące specjalistami. Szereg dostępnych przykładów umożliwia szybką budowę systemu pomiarowego. Niejednokrotnie jednak powoduje, iż użytkownik jak i konstruktor nie zdają sobie sprawy z ograniczeń układu i na podstawie pomiarów wyciągają zbyt daleko idące wnioski. Niniejsza praca dotyka problematyki właściwej metody pozyskiwania danych pomiarowych. Na przykładach popularnie wykorzystywanych podejść do akwizycji danych, zobrazowano nie widoczne w pierwszym momencie skutki. W pracy skoncentrowano się na sytuacji, gdy w późniejszej obróbce dane mają podlegać analizom czasowym lub częstotliwościowym. Całość poparto przykładami bazując na układzie Arduino UNO. Założeniem autorów było wykorzystanie standardowo dostępnych bibliotek.

17

A Novel Method for Dynamic Pressure and Velocity Measurement Related to a Power Cartridge Using a Velocity Test Rig for Water-Jet Disruptor Applications

Parate Bhupesh Ambadas, Salkar Yogesh Balkrishna, Chandel Sunil, Shekhar Himanshu

Central European Journal of Energetic Materials

|

2019

|

Vol. 16, no. 3

319--342

EN

Power cartridges are gas generators utilised to drive a liquid projectile for disruption of suspect improvised explosive devices (IED’s). The purpose of a water-jet disruptor is to destroy the suspected IED. A novel method was devised for pressure measurement at the exit of the cartridge for launching liquid projectile. An experimental test set-up was designed and fabricated for measurement of projectile velocity and the propellant gas pressure in a velocity test rig (VTR). In these experiments, double base propellants having different physical and chemical properties were utilised to drive the solid projectile. This projectile was made of nylon material. This projectile velocity measurement is an important parameter in the armament field. An experimental study is the unique design feature. It is responsible for the measurement of pressure at the exit of the cartridge and the projectile velocity at the muzzle end of the barrel. The projectile velocity was measured using high speed photography. The pressure was measured using a pressure sensor. The maximum projectile velocities for spherical ball powder and NGB 051 propellants have been experimentally measured as 384.23 m/s and 418.32 m/s, respectively. Experimentally the maximum pressures for spherical ball powder and NGB 051 propellants have been evaluated as 50.12 MPa and 63 MPa respectively from data gathered by the acquisition system. The standard deviation between the experimental and theoretical values for the projectile velocity varied from 12.57 to 13.88 for spherical ball powder whereas it was 5.33 to 7.09 for NGB 051 propellant. The percentage error between the experimental and the theoretical values of the projectile velocity was less than 10 for both propellants.

18

Utilization of portable traffic detectors as the support for the data collection process in city logistics systems

Kijewska K., Iwan S.

Archives of Transport System Telematics

|

2019

|

Vol. 12, iss. 1

29--35

EN

One of the most important problem in the analysis of city logistics systems is data collection. The solution, which could support this process is utilization of independent, easy to use devices. The paper is focused on the example of utilization the portable road traffic detectors. These devices are easy to use tools, which can help to collect traffic data including the vehicles classification. The Authors will introduce an example of practical utilization of this kind of device, Sierzega SR4, as well as the advantages related to that.

19

Towards big data solutions for industrial tomography data processing

Kowalska Aleksandra, Łuczak Piotr, Sielski Dawid, Kowalski Tomasz, Romanowski Andrzej, Sankowski Dominik

Annals of Computer Science and Information Systems

|

2019

|

Vol. 18

427--431

EN

This paper presents an overview of what Big Data can bring to the modern industry. Through following the history of contemporary Big Data frameworks the authors observe that the tools available have reached sufficient maturity so as to be usable in an industrial setting. The authors propose the concept of a system for collecting, organising, processing and analysing experimental data obtained from measurements using process tomography. Process tomography is used for noninvasive flow monitoring and data acquisition. The measurement data are collected, stored and processed to identify process regimes and process threats. Further general examples of solutions that aim to take advantage of the existence of such tools are presented as proof of viability of such approach. As the first step in the process of creating the proposed system, a scalable, distributed, containerisation-based cluster has been constructed, with consumer-grade hardware.

20

On the use of predictive models for improving the quality of industrial maintenance: an analytical literature review of maintenance strategies

Merkt Oana

Annals of Computer Science and Information Systems

|

2019

|

Vol. 18

693--704

EN

Due to advances in machine learning techniques and sensor technology, the data driven perspective is nowadays the preferred approach for improving the quality of maintenance for machines and processes in industrial environments. Our study reviews existing maintenance works by highlighting the main challenges and benefits and consequently, it shares recommendations and good practices for the appropriate usage of data analysis tools and techniques. Moreover, we argue that in any industrial setup the quality of maintenance improves when the applied data driven techniques and technologies: (i) have economical justifications; and (ii) take into consideration the conformity with the industry standards. In order to classify the existing maintenance strategies, we explore the entire data driven model development life cycle: data acquisition and analysis, data modeling, data fusion and model evaluation. Based on the surveyed literature we introduce taxonomies that cover relevant predictive models and their corresponding data driven maintenance techniques.