Abstract
This paper presents an approach to access real time data from underground mine. Two advance technologies are presented that can improve the adverse environmental effect of underground mine. Visible light communication (VLC) technology is incorporated to estimate the location of miners inside the mine. The distribution of signal to noise ratio (SNR) for VLC system is also studied. In the second part of the paper, long range (LoRa) technology is introduced for transmitting underground information to above the surface control room. This paper also includes details of the LoRa technology, and presents comparison of ranges with existing above the surface technologies.
Highlights
Underground mining industry is essential to run human civilization, demanding technological advancement in its infrastructure and work environment [1]
This paper presents the key features for location tracking by Visible light communication (VLC) system and discusses the possibility of seamless data transmission technology from underground to above the ground
The signal transmission range needs to be determined before deploying any communication system in underground mine
Summary
Underground mining industry is essential to run human civilization, demanding technological advancement in its infrastructure and work environment [1]. GPS terminals are unable to process the beacons received from the satellite because of the obstructions present in underground mine [7] Other wireless technologies such as radio frequency identification (RFID), wireless fidelity (Wi-Fi) and Zigbee, popular for indoor positioning above the surface [8] fail to provide expected outcome in underground mine because of signal attenuation and path-loss, as these technologies operate in RF band. Characteristics like: use of unlicensed frequency band [13], unique characteristics of physical layer [14], − 150 dBm receiver sensitivity [15]; makes LoRa technology most suitable for implementation in underground mine. This paper presents the key features for location tracking by VLC system and discusses the possibility of seamless data transmission technology from underground to above the ground.
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