Wyniki 1-4 spośród 4 dla zapytania: authorDesc:"Jakub SZUMOWSKI"

ECT Measurement System with Optical Detection for Quality Control of Flow Process DOI:10.15199/48.2016.12.40

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Multi-phase flow measurement technologies are still built and improved. There is a clear trend in the industry to implement more optimum related functions, where the focus is put on an active control and the monitoring system. Control related active optimum functions can only be realised with a system that allows the electronic control. Electrical capacitance tomography (ECT) is a method of imaging cross-sections of vessels and pipelines containing dielectric material. Permittivity distribution is determined with a multi-electrode sensor and interpreted by software. This paper provides description of the device as well as results of exemplary measurements. Streszczenie. Technologie pomiarowe przepływu wielofazowego są wciąż budowane i ulepszane. Istnieje wyraźna tendencja w przemyśle do realizacji funkcji związanych z bardziej optymalnym sterowaniem, w którym nacisk kładziony jest na aktywną kontrolę i system monitoringu. Optymalizacja funkcji do aktywnej kontroli może być realizowana tylko w systemie, który umożliwia sterowanie elektroniczne. Elektryczna tomografia pojemnościowa (ETP) jest metodą obrazowania przekrojów naczyń i rurociągów zawierających materiał dielektryczny. Przenikalność elektryczna jest wyznaczana za pomocą czujnika wieloelektrodowego i interpretowana przez oprogramowanie. Niniejszy dokument zawiera opis urządzenia, jak również przykładowe wyniki pomiarów.(System pomiaru ETP z optyczna detekcją do kontroli jakości procesów przepływu). Keywords: Electrical Capacitance Tomography, Image Analysis, Sensors Słowa kluczowe: elektryczna tomografia pojemnościowa, analiza obrazów, sensory Introduction Simple and low cost intrusive probes have been used in many operation systems to obtain flow information. Process tomography becomes even more appealing when nonintrusive sensors are used to obtain the cross-sectional images. Designed control system allows for correlative studies using sets of measuring electrodes (Fig. 1). The [...]

Electrical Capacitance Tomography and Optical Detection in Quality Control System DOI:10.15199/48.2017.12.53

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Modern production processes are increasingly complex, while customers are demanding higher quality products at the lowest price. This situation increases the importance of process optimization. Products and requirements are changing faster and faster, technologists have less and less time to learn the process and to optimize it solely on the basis of their own experience. On the other hand, very often the processes are automated and metered in detail, so we have plenty of data describing it. Analysis of the data may be used for process optimization in different ways and it can affect many aspects of process management. We can detect disturbances in the process, find the causes affecting the problems with quality, and choose the optimal settings for the process, comparing different preparation procedures and many others. It is worth noting that in the processes, there are many people involved in with different tasks and permissions. Therefore, data analysis tool should provide access control. The research project assumes creation of two measurement platforms: a set of multiphase flow system and a mini production line. In the first case we will be analysing two-phase flows of liquid (water) and air. That type of flow is commonly used in chemical reactors where air is mixing substances [4,9,10]. Electrical Capacitance Tomography Electrical capacitance tomographs are devices capable of performing analysis of pipeline fragment or a vessel filled with examined medium [15]. Obtained cross-section’s image reconstruction can be analysed further for an automated quality control system’s autonomous and correct decision. However, existing industrial solutions are still of significant size and structurally complex [2,4,5]. This fact greatly limits the number of actual deployments. Decision makers are afraid of electrical capacitance tomography (ECT) implementation due to high costs of possible equipment failures and because[...]

Moisture Wall Inspection Using Electrical Tomography Measurements DOI:10.15199/48.2018.01.25

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One of the major causes of pathologies in historic buildings all over the world is the presence of moisture, particularly rising damp. Moisture transfer in walls of an old buildings, which are in direct contact with the soil, leads to a migration of soluble salts responsible for many building problems. Building porous materials (e.g. brick or concrete), both natural and manufactured have pores (like a sponge) and the moisture can be pulled up against gravity (capillary effect). Rising damp from the soil is a problem in old buildings, especially without adequate horizontal and vertical insulation of foundations. Moisture creates a danger not only to the walls, but also to human health. It promotes progress of rheumatic disorders and formation of fungus on the walls. Fungus can cause allergies and many other diseases. There are many different drainage systems (dry as watertight barriers, injection of hydrofuge products, etc.). Regardless of the method it is very important to continuously monitor the status of damp during the drying process [5]. The models of a brick wall are presented in Fig. 1. The test results obtained by the non-destructive impedance tomography are compared with the results obtained by numerical simulations. There were prepared two prototype measuring systems (16 and 32 electrodes). First of them is a system contains the 16 electrodes for measuring damp brick wall on one side (Fig. 1a). Second one is a system with 32 electrodes for test on both sides of wall (Fig. 1b). Measurement systems The electrical tomography (ET) is a technique of imaging the [...]

A hybrid tomography for assessing the moisture level of walls and building condition DOI:10.15199/48.2019.02.23

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The non-destructive method [4,20,26,27,34] of brick wall insulation is tested using electrical impedance tomography (EIT). The aim of the presented method is to obtain image reconstruction using the proposed solution. The set was used to determine the humidity of the test wall on specially constructed models. The presented algorithms have been successfully used in the reconstruction of model wall measurement data. These approaches were based on the sensitivity analysis. An effective algorithm for solving forward and inverse problems would also improve many numerical results of the proposed methods. In modeling the problem in electrical tomography, it is required to identify unknown conductivities from near-limit potential measurements [17-19,21]. The discussed technique can be used to solve inverse problems in electrical impedance tomography. Fig. 1. Hybrid tomography system. Electrical tomography consists in restoring the conductivity of the interior of the tested object with the knowledge of currents and tensions imposed on its surface. Most of the available research methods allow only a point evaluation of moisture, thanks to which it is possible to achieve only the discrete distribution itself. Permeation of moisture in the walls of old buildings, which are in direct contact with the soil, leads to migration of soluble salts in relation to many wall problems. Building porous materials (eg bricks or concrete), both natural and made, has pores (like a sponge). The data collection system collects the measured voltage from the electrode and then processes the data [1-3,5-11,13-15,28-33]. Figure 1 presents the model of a hybrid tomography system. Measurement system The electrical tomography is a technique of i[...]

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