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    Tytuł:
    Hardware-Software Complex for Predicting the Development of an Ecologically Hazardous Emergency Situation on the Railway
    Autorzy:
    Lakhno, Valerii
    Shalabayeva, Maira
    Kryvoruchko, Olena
    Desiatko, Alona
    Chubaievskyi, Vitalyi
    Alibiyeva, Zhibek
    Powiązania:
    https://bibliotekanauki.pl/articles/27311935.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    ecological safety
    hardware-software complex
    monitoring
    environment
    emergency situation
    railway transport
    Opis:
    A hardware-software system has been implemented to monitor the environmental state (EnvState) at the site of railway (RY) accidents and disasters. The proposed hardware-software system consists of several main components. The first software component, based on the queueing theory (QT), simulates the workload of emergency response units at the RY accident site. It also interacts with a central data processing server and information collection devices. A transmitter for these devices was built on the ATmega328 microcontroller. The hardware part of the environmental monitoring system at the RY accident site is also based on the ATmega328 microcontroller. In the hardwaresoftware system for monitoring the EnvState at the RY accident site, the data processing server receives information via the MQTT protocol from all devices about the state of each sensor and the device's location at the RY accident or disaster site, accompanied by EnvState contamination. All data is periodically recorded in a database on the server in the appropriate format with timestamps. The obtained information can then be used by specialists from the emergency response headquarters.
    Źródło:
    International Journal of Electronics and Telecommunications; 2023, 69, 4; 707--712
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laboratory bench to analyze of automatic control system with a fuzzy controller
    Autorzy:
    Tryputen, Mykola
    Kuznetsov, Vitaliy
    Kuznetsov, Valeriy
    Kuznetsova, Yevheniia
    Tryputen, Maksym
    Kuznetsova, Alisa
    Powiązania:
    https://bibliotekanauki.pl/articles/328426.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    laboratory bench
    thermal objects
    hardware-software complex
    programmable logical controller
    dynamic model
    system sterowania
    stanowisko laboratoryjne
    model dynamiczny
    sterownik
    Opis:
    The paper represents laboratory bench to analyse a system of automated control with a fuzzy controller. The laboratory bench consists of a thermal object, and software and hardware complex involving logic controller VIPA System 200 V as well as HMI / SCADA system Zenon Supervisor 7.0. The thermal object is described with the help of the second-order differential equation using “current value within the power converter of electric heater-air temperature inside a thermal object” control channel. Coefficients of the differential equation depend upon location of a dampener and upon rotation frequency of a centrifugal fan. Control error (ie deviation between the specified temperature value within the thermal object and its current value), and derivative of the error, represented in the form of linguistic variables involving five triangular terms and two trapezoidal (extreme) ones have been used as the input values of the fuzzy controller. Output value of the fuzzy controller is the electric power supplied to the electric heater and assuming seven specified values. Selection of the specific value of electric power depends upon knowledge base being a finite set of rules of fuzzy sets falling into line with the applied linguistic variables. To implement such a system of automated control with a fuzzy controller, original software has been developed making it possible to analyze a process of thermal object heating with the use of human-computer interface. Interaction algorithm of certain program elements has been described. Experimental results, concerning the thermal object transfer from different initial conditions to terminal ones, have been demonstrated. A dependence of mean-square error of the controlled value upon the control period has been demonstrated.
    Źródło:
    Diagnostyka; 2020, 21, 2; 61-68
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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