Abstract
Adequate lightening and efficient communication technology have prime importance for safe underground mining communication system operations. Existing conventional light and communication systems used in underground mines are not very efficient solutions due to heavy power and maintenance requirements. Also, efficient communication technology is required for instantaneous reporting of any potential disaster event under hazardous underground environment. In this paper, we propose light fidelity (Li-Fi) as an efficient way of incident reporting as well as source of illumination for mines. Visible light communication (VLC) system is being used in mines operations, to support communication-blind areas. It exhibits superior performance over traditional radio frequency (RF) communication systems, in terms of low energy consumption, higher data rates achieved, and wide frequency band (430 − 790) T Hz. In this paper, we present VLC system for safe and reliable mining operations and analyze and discuss corresponding channel impulse response (CIR). We consider effect of shadowing and dust on our optical channel model. We compare the performance of our system with available methods in terms of bit error rate (BER), CIR, and prove the superiority of our proposed system.
Highlights
To improve health and safety at work and to reduce the rate of accidents, modern technologies have been widely adopted and used
We compared our results with the results given by [22] where the results showed the superiority of our system specially in mild and moderate shadowing cases, from Fig. 5 and for high signal-to-noise ratio (SNR) the bit error rate (BER) < 10−5, which is considered a good value because it makes the communication link stable
Channel Impulse Response: We showed in Fig. 6 the channel impulse response (CIR) for mining roadway and work face areas for LOS and NLOS paths
Summary
To improve health and safety at work and to reduce the rate of accidents, modern technologies have been widely adopted and used. VLC can be used as a new potential to improve the underground mining wireless communication systems. It is comprised of LED based system, can provide higher data rates over short distance, compared to RF technologies suffering from electromagnetic interferences. VLC technology does improve response time (use of on-off keying (OOK) modulation technique for underground operations) and provide guaranteed communication availability [1]. It is a strong candidate for replacement of conventional systems.
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