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• Measurement of Friction Losses of Electro-Pneumatical Valves with Industrial Devices

  68-72

  Kristóf Sipos

  János Tóth

  Views:

  97

  The pneumatic devices are frequently used in several fields of the industry but the losses and pressure
  drops of the pneumatic system are not really investigated. These losses can cause great property damages during long uptime because the compressed air is a quite expensive energy source. I designed a measuring system which is able to measure the friction losses of electro-pneumatic 5/2-way valves (monostable and bistable too). It is possible to choose between manual and automatic operation modes as well. In the automatic mode the system makes measurements in three different user-defined pressure levels. In the manual mode the measuring pressure can be set between 2-6 bars. An automatic evaluate program is also an important part of the created system. It gives the possibility of the fast evaluation of the saved data and it could be the base of a fast report generating application.

• Controlling a Wind Instrument with the Help of PROFINET Industrial Protocol

  123-128

  Tibor Liptai

  János Tóth

  Géza Husi

  Views:

  86

  Nowadays, the industrial communication networks are the one of the most important research area in advance control systems. It is necessary to think about controlling tasks at system level instead of local solutions. There are different types of protocols developed for communication between industrial controlling devices.

• Use of IoT Tools to Support the Decision-making Process

  125-141

  Mihály Tóth

  János Felföldi

  Róbert Szilágyi

  Views:

  238

  Nowadays sensor networks and other systems, based on the IoT concept demonstrate the benefits of their usage, which includes the support of the decision-making process, therefore achieving an optimal result in the context of more and more fields. In this experiment, an additional sensor network has been developed based on a modular system derived from a previous development by means of a target-specific modification of the required modules to measure environmental data in a drying chamber used in food industry. The main objectives include the development of the device, the verification of the measurements of the factory-built device, providing an interface, which is able access the measurement data and after gathering experience from the usage, further developing the system and extending the functionality of the web application. The built-in data acquisition and control system stores the data of the measurements in the form of text files, while our additional data acquisition and control system uses a unified measurement database to store the data. According to the structure, a task-specific application has been developed in order to unify the two sources. Analysis of collected data was performed after running the ETL (extract, transform, load) algorithm converting the transaction-oriented database. The experiment shows so far the benefits of the multi-point measurements by a significant difference between the measured values, so we certainly consider further developments.

• Security and Risk management of Intelligent Integrated Institutes

  74-84

  Bence Kovács

  János Tóh

  Views:

  100

  The intelligent households are getting more and more popular beside the intelligent technologies. With all the advantages that this can provide, it brings the security risk of the information technology as well. We must deal with those dangers. We have to determine the risks so that we can make proper precautions. This article gives an effective guideline to achieve safety.