Construction of a Wi-Fi System with a Tethered Balloon in a Mountainous Region for the Teleoperation of Vehicular Forestry Machines

In this study, a Wi-Fi system with a tethered balloon is proposed for the teleoperation of vehicular forestry machines. This system was developed to establish a Wi-Fi communication for stable teleoperation in a timber harvesting site. This system consisted of a helium balloon, Wi-Fi nodes, a measure...

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Bibliographic Details
Published in:Forests 2024-11, Vol.15 (11), p.1994
Main Authors: Kim, Gyun-Hyung, Lee, Hyeon-Seung, Mun, Ho-Seong, Oh, Jae-Heun, Shin, Beom-Soo
Format: Article
Language:English
Subjects:
Antennas
Antennas (Electronics)
Balloons
Communications systems
Data transmission
Design specifications
Forest harvesting
Forestry
Forests and forestry
Global navigation satellite system
Helium
Helium balloons
Inertial platforms
Inertial sensing devices
Latency
Measuring instruments
Meteorological balloons
Mountain regions
Mountainous areas
Receivers & amplifiers
Remote control
Sensors
Signal strength
Streaming media
Tethered balloons
Timber
Unmanned aerial vehicles
Wi-Fi
Wind measurement
Wind speed
Wireless access points
Wireless communications
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Summary:In this study, a Wi-Fi system with a tethered balloon is proposed for the teleoperation of vehicular forestry machines. This system was developed to establish a Wi-Fi communication for stable teleoperation in a timber harvesting site. This system consisted of a helium balloon, Wi-Fi nodes, a measurement system, a global navigation satellite system (GNSS) antenna, and a wind speed sensor. The measurement system included a GNSS module, an inertial measurement unit (IMU), a data logger, and an altitude sensor. While the helium balloon with the Wi-Fi system was 60 m in the air, the received signal strength indicator (RSSI) was measured by moving a Wi-Fi receiver on the ground. Another GNSS set was also utilized to collect the latitude and longitude data from the Wi-Fi receiver as it traveled. The developed Wi-Fi system with a tethered balloon can create a Wi-Fi zone of up to 1.9 ha within an average wind speed range of 2.2 m/s. It is also capable of performing the teleoperation of vehicular forestry machines with a maximum latency of 185.7 ms.
ISSN:1999-4907
1999-4907
DOI:10.3390/f15111994