Volume 55

20200912-full
Issue 9-12, 2020

ELECTROTECHNICA & ELECTRONICA E+E

Vol. 55. No 9-12/2020
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA

20200912-full

C O N T E N T S

TELECOMMUNICATIONS SCIENCE
Nobuharu Okamitsu, Koichi Miyazono, Takeshi Tanaka
Transmission ...  read more

20200912-01
Transmission of environment data with preliminary secret sharing processing using Sigfox
Nobuharu Okamitsu, Koichi Miyazono, Takeshi Tanaka

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Using the Sigfox network and the Internet, we created Internet-of-Things devices equipped with temperature, humidity, and barometric pressure sensors to measure the environment data. In this study, we developed a way to process ...  read more

20200912-02
Geo-referenced system for air quality monitoring
Kamen Boyadzhiev

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This paper presents a developed system for detecting air pollutants and their concentration and monitoring the ambient environment parameters. The system generates geo-referenced data which is recorded to a local MySQL database ...  read more

20200912-03
Physical modeling of wind energy conversion systems in laboratory conditions
Zahari Zarkov

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The article presents the experience of the author in the area of the physical modeling of wind energy conversion systems (WECS) with different types of electric generators and electronic converters. A small power test benches ...  read more

20200508-full
Issue 5-8, 2020

ELECTROTECHNICA & ELECTRONICA E+E

Vol. 55. No 5-8/2020
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA

20200508-full

C O N T E N T S

TELECOMMUNICATIONS SCIENCE
Seferin Mirtchev, Mircho Mirchev
IP Network Interconnection – Survey 75

Aydan M. Haka
 ...  read more

20200508-01
IP Network Interconnection – Survey
Seferin Mirtchev, Mircho Mirchev

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The future networks will provide a new digital infrastructure to automate everything. The total number of Internet subscribers will continue to grow and Internet traffic will increase tremendously. The new applications can ...  read more

20200508-02
Improved simulation environment for visualisation the content of IEEE 802.15.4 frame on 6LoWPAN network
Aydan M. Haka

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Internet of Things (IoT) technologies, the communication of which relies on the reliable and high-speed 4G and 5G networks, are entering modern life more and more widely. One of the partitions of the IoT concept is sensor ...  read more

20200508-03
IoT device with Global Positioning System using SigFox, ThingSpeak, and Anaconda platform
Takeshi Tanaka, Nobuharu Okamitsu, Kenshi Nishino

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We have developed a rudimentary Internet of Things (IoT) device equipped with a global positioning system module using the Sigfox network. The data sent from the IoT device using Sigfox Cloud and ThingSpeak are received and ...  read more

20200304-full
Issue 3-4, 2020

ELECTROTECHNICA & ELECTRONICA E+E

Vol. 55. No 3-4/2020
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA

20190304-full

C O N T E N T S

TELECOMMUNICATIONS SCIENCE
Takeshi Tanaka, Nobuharu Okamitsu, Takuma Hamada, Kenshi Nishino
 ...  read more

20200304-01
Development of an IoT device using SigFox, ThingSpeak, and MATLAB/Simulink
Takeshi Tanaka, Nobuharu Okamitsu, Takuma Hamada, Kenshi Nishino

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We installed a Sigfox antenna at Hiroshima Institute of Technology and acquired basic environmental data via the Sigfox network. The IoT device created by us comprises Sigfox, ThingSpeak, and MATLAB/Simulink, and this configuration ...  read more