scholarly journals RESEARCH OF ELECTROMAGNETIC ACTIVITY IN THE ATMOSPHERE USING REMOTE MONITORING

2021 ◽  
Author(s):  
Oksana Topchiy
Keyword(s):  
Spectral Analysis ◽  
Remote Monitoring ◽  
Experimental Studies ◽  
Electromagnetic Signals

The development of software for a receiving device for a system for remote monitoring of electromagnetic activity in the atmosphere is described. Experimental studies were carried out and spectral analysis of electromagnetic signals was made using the developed program in LabVIEW.

scholarly journals The results of experimental studies of VLF–ULF electromagnetic emission by rock samples due to mechanical action

2013 ◽  
Vol 1 (6) ◽  
pp. 7821-7842
Author(s):  
A. A. Panfilov
Keyword(s):  
Laboratory Experiments ◽  
Experimental Studies ◽  
Electromagnetic Emission ◽  
Mechanical Action ◽  
Frequency Range ◽  
Impact Action ◽  
Rock Samples ◽  
Electric Component ◽  
Electromagnetic Signals ◽  
The Impact

Abstract. The paper presents the results of laboratory experiments on electromagnetic emission excitation (electric component of electromagnetic field) by rock samples due to different forms of mechanical stress applications. It was shown that samples generate electric impulses with different spectra when the impact action, gradual loading or dynamic friction is applied. It was ascertained that level and spectral compositions of signals, generated by rock samples, change with increasing quantity of hits. It was found that strong electromagnetic signals, generated while rock samples were fracturing, were accompanied by repetitive weak, but perceptible variations of the electric field intensity in short frequency range.

Changes in the Parameters of the Electromagnetic Response of Model Dielectric Samples with Air Cavity Defects under External Deterministic Acoustic Impact

2021 ◽  
Vol 101 (1) ◽  
pp. 12-17
Author(s):  
D.D. Dann ◽  
◽  
M.V. Petrov ◽  
P.I. Fedotov ◽  
E.A. Sheveleva ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Dielectric Materials ◽  
Electromagnetic Response ◽  
Average Weight ◽  
Acoustic Excitation ◽  
Ball Impact ◽  
Electromagnetic Signals ◽  
Air Cavities ◽  
The Impact

The paper discusses the possibility of testing the air inclusions saturation in cement-sand samples using the acoustic-electrical transformations phenomenon in heterogeneous dielectric materials. An experiment technique is presented including contact external acoustic excitation and contactless registration of the electromagnetic response to such an impact. Methods of samples deterministic acoustic excitation by a ball impact and the experimental determination of the impact energy are described. The model samples size and composition are described, including air cavities in a polyethylene sheath. The experimental studies geometry is shown, indicating the direction of the samples acoustic excitation and the location of the electromagnetic receiving plates. It is shown that the defect-free samples and with air cavities, have different amplitude and frequency of the electromagnetic signals spectral components. The samples with air cavities have the average weight of the EMS spectrum changes towards lower frequencies. This frequency shift effectively reflects the concentration of air cavities defects in a cement-sand samples and this effect can be used when testing concrete products for the presence of air inclusions, and, accordingly, will allow determining the frost resistance of products.

Remote monitoring of electromagnetic signals and seismic events using smart mobile devices

2009 ◽  
Vol 35 (6) ◽  
pp. 1296-1303 ◽  
Author(s):  
Pantelis Georgiadis ◽  
Dionisis Cavouras ◽  
Konstantinos Sidiropoulos ◽  
Konstantinos Ninos ◽  
Constantine Nomicos
Keyword(s):  
Mobile Devices ◽  
Remote Monitoring ◽  
Seismic Events ◽  
Electromagnetic Signals ◽  
Smart Mobile ◽  
Smart Mobile Devices

scholarly journals МУЛЬТИСЕНСОРНАЯ КАМЕРА ДЛЯ СПЕКТРАЛЬНЫХ ИЗМЕРЕНИЙ НА ПРИБОРАХ С ЗАРЯДОВОЙ СВЯЗЬЮ ЛИНЕЙНОЙ СТРУКТУРЫ

2019 ◽  
pp. 80-88 ◽  
Author(s):  
Анатолий Данилович Егоров ◽  
Вадим Анатольевич Егоров ◽  
Сергей Анатольевич Егоров ◽  
Игорь Ентович Синельников ◽  
Михаил Федорович Бабаков
Keyword(s):  
Spectral Analysis ◽  
Transfer Function ◽  
Spectral Line ◽  
Experimental Studies ◽  
Atomic Emission ◽  
Optical Spectra ◽  
Light Signal ◽  
Industrial Enterprises ◽  
Signal Characteristics ◽  
The Law

The subject matter of the publication is the improvement of equipment and methods of atomic emission spectral analysis for use in laboratory and industrial practice. The goal is the author's development of a multisensor camera for recording optical spectra based on TCD1304AP TOSHIBA type TCD1304AP devices and research methods. The tasks to be solved are: developing and creating a multisensor optical spectra registration camera suitable for use in laboratory and workshop conditions working in conjunction with industry-issued spectrographs of various optical schemes, as well as developing methods for controlling temperature and linearity of the light-transmitting signal characteristics. The following results were obtained: The development of a multisensory spectral camera. Disclosed circuit design and design features of the developed camera. The used hardware and functional diagram are described. The light-signal characteristic of photodetectors has been studied in conjunction with the problems of spectral analysis. Experimental studies of the dark current and nonlinearities of the transfer function of the detector have been performed. Several methods for determining the temperature of a photodetector without the use of special thermal sensors are presented. A method for estimating nonlinearities according to the feasibility of the law of reciprocity of the spectral line brightness and the duration of exposure is given. The expediency of using the law of reciprocity for estimation the linearity of the light-signal transfer function of photodetectors are shown. Conclusions. As the result of comparing studies of other authors with our works, the violation of the law of reciprocity of the spectral line brightness and the duration of exposure was discovered not only at high but also at low signal levels. The reasons for deviations from the linearity of the light-signal characteristics at low levels of illumination are revealed. The methods of dealing with blooming when registering strong lines are proposed. The developed equipment and research results are used by the authors in laboratory practice at several industrial enterprises in Ukraine

scholarly journals Information system for remote monitoring the vehicle operational efficiency

2021 ◽  
Vol 1199 (1) ◽  
pp. 012081
Author(s):  
M. Śmieszek ◽  
V. Mateichyk ◽  
M. Tsiuman ◽  
R. Symonenko ◽  
I. Gritsuk ◽  
...  
Keyword(s):  
Information System ◽  
Remote Monitoring ◽  
Experimental Studies ◽  
Operational Efficiency ◽  
Technical Condition ◽  
Coolant Temperature ◽  
Monitoring And Control ◽  
Software Complex ◽  
Motion Modes ◽  
Particulate Matter Emissions

Abstract The article describes the information system for remote monitoring and control of vehicle technical condition and motion modes with the use of modern telematics technologies. There are 17 morphological features in the system, which determine the level of telematic support of the main functional elements of the system to obtain information about vehicle technical condition and motion modes in the appropriate infrastructural conditions. The information model of the system for monitoring of parameters of vehicle technical condition, motion modes and infrastructural characteristics was built. This model is implemented in the information and software complex for remote monitoring of vehicle operational efficiency. The results of experimental studies of freight vehicle operational efficiency on a given route with use of the developed information and software complex are presented. The results show significant influence of the vehicle technical speed and average coolant temperature of its engine on operational efficiency indicators such as fuel consumption, carbon dioxide, nitrogen oxides and particulate matter emissions on the route characterized by different road height profiles.

Электромагнитные методы контроля изменений напряженно-деформированного состояния диэлектрических материалов

2021 ◽  
pp. 44-53
Author(s):  
А.А. Беспалько ◽  
Д.Д. Данн ◽  
М.В. Петров ◽  
Е.К. Помишин ◽  
Г.Е. Уцын ◽  
...  
Keyword(s):  
Strain State ◽  
Experimental Studies ◽  
Electromagnetic Emission ◽  
Acoustic Excitation ◽  
Acoustic Sounding ◽  
Rock Samples ◽  
Electromagnetic Responses ◽  
Electromagnetic Signals ◽  
Complex Methods ◽  
Sample Axis

Mechanical-electrical and acoustic-electrical complex methods of testing cracking while changing the stress-strain state in dielectrics are discussed on the example of rock samples. The paper discusses the results of numerical and experimental studies of changes in the electromagnetic responses parameters under the pulse deterministic acoustic excitation of rock samples with different composition and texture. Also the results of mathematical calculations of the stress concentration on cracks located along the sample axis are presented, perpendicular to which deterministic acoustic pulses were introduced. The experimental studies results of sample electromagnetic emission with containing calcite and magnetite under uniaxial compression to fracture are shown. Regularities in the electromagnetic signals amplitudes changes during acoustic sounding in the process of «stepwise» uniaxial loading by compression to destruction are given.

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