MIAG 4 (532) 2017 Andrzej Nowrot, Krzysztof Kamil Żur, Anna Świderska-Środa, Monika Mikołajczyk, Witold Łojkowski Autonomous fiber-optic gas monitoring system with thermoelectric power supply This paper presents the concept of an autonomous measuring instrument powered by a locally accessible source of heat with a contact surface area of over a dozen or several dozen […]
Read MoreMIAG 3 (531) 2017 ADAM MAREK Influence of indirect frequency converters on operation of central leakage protection in underground coalmine networks This paper presents considerations for leakage protections operating in underground coalmine networks containing loads that include frequency converters. The possibility of malfunctions in leakage protections has been proven in the case of a […]
Read MoreMIAG 2 (530) 2017 MARIAN HYLA A universal server for monitoring industrial devices using a web browser This paper presents the implementation of a universal intermediate server for the monitoring of in-dustrial devices using the Modbus TCP protocol. The application provides selected information using the HTTP protocol accepted by web browsers. The software configuration and […]
Read MoreMIAG 1 (529)_2017 JERZY MRÓZ, DARIUSZ FELKA, ADAM BROJA, MARCIN MAŁACHOWSKI Devices for measuring ventilation parameters and methane concentration as well as concept of complex monitoring of methane hazard in longwall area This paper discusses the issue of the methane hazard occurring in the longwall areas of hard coal deep mines along with ways of […]
Read MoreNr 4/2016 (528) Bogdan CIANCIARA, Zbigniew ISAKOW, Kazimierz SICIŃSKI, Aleksander CIANCIARA Możliwości predykcji wstrząsów na podstawie analizy zjawisk maksymalnych emisji sejsmicznej w systemie INGEO Predykcja czasu wystąpienia wstrząsów w systemie INGEO oparta jest na analizie emisji sejsmicznej rejestrowanej w systemie sejsmoakustycznym. Sygnały emisji są generowane pękaniem górotworu wywołanym eksploatacją. Emisja taka charakteryzuje się dużą aktywnością […]
Read MoreNr 3/2016 (528) TOMASZ MOLENDA, SŁAWOMIR CHMIELARZ Galvanic separation of analogue signals The article deals with the issues of galvanic separation of analogue circuits and methods to perform it. The authors described capacitive, inductive and optical couplings, separation with the use of processing as well as non-linearity correction of optoelectronic materials characteristics. The available solutions […]
Read MoreNr 2/2016 (528) MARIAN HYLA Impact of voltage dips on the operations of a high-power synchronous motor with a reactive power Controller The article presents the impact of voltage dips on the operations of a synchronous motor in the state of synchronism. The following characteristics were determined: static characteristics of the load angle depending on […]
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