Volume 55, Issue 9-12, 2020

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

Cite as:

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

Cite as:

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

Cite as:

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