A Review on Non-RF Underground Positioning Techniques for Mining Applications

Zeeshan, Mohammad; Chavda, Mudra; Ehshan, Khan Mohammad; Nayek, Rajdip; Malik, Shahid

doi:10.1109/tim.2023.3297230

Cited by 3 publications

(1 citation statement)

References 144 publications

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“…In China, coal mining environments are complex, and accidents can result in significant economic losses and casualties. Therefore, personnel detection in hazardous underground areas is a necessary safety measure [2].…”

Section: Introductionmentioning

confidence: 99%

Detection of Underground Dangerous Area Based on Improving YOLOV8

Ni,

Huo,

Hou

et al. 2024

Electronics

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In order to improve the safety needs of personnel in the dark environment under the well, this article adopts the improved YOLOV8 algorithm combined with the ray method to determine whether underground personnel are entering dangerous areas and to provide early warning. First of all, this article introduces the coordinate attention mechanism on the basis of YOLOV8 target detection so that the model pays attention to the location information of the target area so as to improve the detection accuracy of obstruction and small target areas. In addition, the Soft-Non-Maximum Suppression (SNMS) module is introduced to further improve accuracy. The improved model is then combined with the ray method to be deployed and applied under a variety of angles and different scenic information cameras. The experimental results show that the proposed method obtains 99.5% of the identification accuracy and a frame speed of 45 Frames Per Second (FPS) on the self-built dataset. Compared with the YOLOV8 model, it has a higher accuracy and can effectively cope with the changes and interference factors in the underground environment. Further, it meets the requirements for real-time testing in dangerous underground areas.

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Section: Introductionmentioning

confidence: 99%

Detection of Underground Dangerous Area Based on Improving YOLOV8

Ni,

Huo,

Hou

et al. 2024

Electronics

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The Development of User Requirements as a Framework for the Design and Evaluation of a Fit-for-Purpose Missing Person Locator System for Underground Mines

Ngwenyama,

Webber-Youngman

2023

Mining, Metallurgy & Exploration

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Entrapments are a huge risk in underground mines. This happens when miners (or any other persons who have entered underground) survive the initial event of an accident, become trapped or lost in unknown and life-threatening locations after evacuation, and remain unaccounted for. At this point, every second counts, and emergency response is highly desired for any chances of saving survivors. The survival chances of the missing persons depend on how quickly they can be located. Rescue teams are often deployed to search for the missing persons underground. However, the rescue teams are forced to search in random and presumed areas of the mine. This is due to the unavailability of information pertaining to the whereabouts of the missing persons. Not only the provision of accurate locations, but various other types of information such as post-accident two-way communication can enhance the survival chances of the missing persons. This information can be provided by a fit-for-purpose missing person locator system. A wide variety of missing person locator systems are already commercially available, some are in testing phases and others in prototype and development phases. This includes tracking, tracing, location detectors and post-accident two-way communication systems. These systems have unique functionalities, capabilities and limitations; making it difficult for mines to select the most effective, applicable and suitable system specific to their mine. In this study, the user requirements for a fit-for-purpose missing person locator system were developed. The purpose of the user requirements was to provide a guideline to facilitate the system selection process. The user requirements can also be used as a tool to measure and evaluate the performance of the selected missing person locator system. The user requirements were also used to predict the success of the selected system under different missing person incident scenarios. The development of the user requirements showed a potential for many other benefits for missing person locator systems.

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VLC channel model in underground mining scenarios with the extinction effect and shadowing effect

Li,

Wang,

Dong

et al. 2024

Appl. Opt.

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In this work, a novel, to our knowledge, visible light communication (VLC) channel model is proposed for underground mining scenarios taking into account the impact of coal dust particles and obstacles. Specifically, the extinction effect of the coal dust particles is analyzed on the basis of the Mie theory, and the quantitative formula of the influence on channel direct current (DC) gain is derived. Meanwhile, the effect of a random shadowing phenomenon is investigated and quantified with the geometric and statistical model considering the position, size, and shape of the obstacles. The channel impulse response, path loss, root mean square delay spread, and bit error rate (BER) are further investigated in two different underground mining scenarios, namely, a mining roadway and coal mine working face. Simulation results show that the shadowing effect plays a major role in the influence of DC gain attenuation. Furthermore, the BER performance is noticeably degraded due to the presence of coal dust particles and obstacles, especially when the receiver is located far from the transmitter. This work will benefit the design of the VLC systems in underground mines.

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A Review on Non-RF Underground Positioning Techniques for Mining Applications

Cited by 3 publications

References 144 publications

Detection of Underground Dangerous Area Based on Improving YOLOV8

Detection of Underground Dangerous Area Based on Improving YOLOV8

The Development of User Requirements as a Framework for the Design and Evaluation of a Fit-for-Purpose Missing Person Locator System for Underground Mines

VLC channel model in underground mining scenarios with the extinction effect and shadowing effect

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