An innovative person detection system based on thermal imaging cameras dedicate for underground belt conveyors

Uth, Fabian; Polnik, Bartosz; Kurpiel, W.; Baltes, Ralph; Kriegsch, Peter; Clausen, Elisabeth

doi:10.37190/msc192618

Cited by 13 publications

(12 citation statements)

References 2 publications

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“…In case of reaching a load value exceeding the permissible values of individual elements of the structure, it may lead to destruction or irreversible deformation. The impact of the occurring deformations and stress depends on multiple factors regarding the type of material, the force affecting the structures and the condition of the machine [61][62][63].…”

Section: Methodsmentioning

confidence: 99%

Numerical Study for Determining the Strength Limits of a Powered Longwall Support

Szurgacz

Trzop²,

Gil³

et al. 2022

Processes

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The process of designing a longwall powered support is extremely complex and requires many operations related to the creation of a complete machine. The powered support section is one of the basic elements of the longwall system. It acts as protection for the working space and takes part in the process of excavating and transporting the spoil. The implementation of the support that meets the guidelines of the manufacturer and user requires an endurance analysis at the design stage conducted according to the regulations in force. The main objective of this research, pursued by the authors, was to perform the analysis of the ultimate strength of selected elements of the designed powered support section. The research was carried out with the use of special software that uses the finite element method. This article presents the analysis of the strength limits conducted with the help of the finite element method, determining the strength of selected elements of the longwall support section. The solutions proposed by the authors include changes in the structure and properties of the material in the design process. The aim of the proposed solution was to obtain a model with strength value that meets safety standards. The research results are a valuable source of knowledge for designers. Solutions of this type set examples for spatial models of the longwall support section being designed currently. The analysis presented in the article, together with the results of the research and the conclusions resulting from them, may improve the safety and effectiveness of powered supports.

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Section: Methodsmentioning

confidence: 99%

Numerical Study for Determining the Strength Limits of a Powered Longwall Support

Szurgacz

Trzop²,

Gil³

et al. 2022

Processes

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show abstract

“…Harsh conditions inside the mining tunnel and the possible length of conveyors pose a difficult challenge for the maintenance personnel. Long-Wavelength Infrared cameras (LWIR) are one of the approaches to solving the problem of safety in such hazardous areas [15].…”

Section: Introductionmentioning

confidence: 99%

Rotation speed assessment for idlers in belt conveyors using image analysis

Dąbek

Krot

Wodecki

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Monitoring and diagnostics of elements of the belt conveyor is a challenging task. One of the hardest aspects is dealing with objects such as rolling idlers that support the belt. They are distributed along the entire length of a conveyor, and their amount can easily reach thousands. In the ideal case, every idler should undergo in-situ monitoring, however, this is impractical. Hence, it is proposed to use remote sensing to acquire knowledge about some aspects of their condition. In particular, the authors propose to measure the rotational speed of the idler based on short video recordings. This data could be captured by mobile inspection robots, such as UAVs or UGVs, or even manually. Detecting the fact that the idler rotates with improper speed (lower than nominal), could indicate a developing fault of the internal bearing. An idler that rotates slower than it should also create additional friction between itself and the belt. This friction can increase the overall operational resistances, and even cause fire due to increased temperature. In this paper, the authors present a simple method for establishing the rotational speed of the idler based on video data analysis.

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“…This issue also applies to the mining industry of solid, liquid and gaseous minerals, which is expected to intensify production while minimizing negative impacts on the environment [4][5][6]. This determines the conduct of research and the search for new solutions-both in terms of improving the reliability of machines [7][8][9][10] and optimizing production processes [11][12][13][14][15][16][17] as well as improving work safety [18][19][20][21][22] and caring for the environment [23].…”

Section: Introductionmentioning

confidence: 99%

“…Energies 2022, 15, x FOR PEER REVIEW 2 of 15 well as improving work safety [18][19][20][21][22] and caring for the environment [23]. Sustainable development is also observed in hard-coal mining, which deals with the intensification of the mining process and an increase in efficiency.…”

Section: Introductionmentioning

confidence: 99%

Development of a Hydraulic System for the Automatic Expansion of Powered Roof Support

Szurgacz

Borska²,

Diederichs³

et al. 2022

Energies

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A mechanical support in a longwall complex requires proper supervision and control of operating parameters because it is responsible for the safety of machines and workers. Its main functions are to protect the excavation against the adverse effects of rock mass and to move it along with the operational progress of the shearer and the scraper conveyor. In the era of Industry 4.0 as well as green economy and sustainable development, the development of machines and devices included in the longwall complex is an important area of invention. When it comes to the mechanical support included in the longwall complex, the authors propose changes to the hydraulic control system. The main purpose of the work was to develop a system that can automatically expand the legs of the powered support. Tests were carried out under real conditions while equipping the support section with a prototypical hydraulic system and with a system monitoring the correct operation of the prototype. This article presents the development of a prototypical installation under real conditions for testing on a longwall. The innovative solution proposed by the authors consisted of introducing a prototypical double valve block into the hydraulic system of the housing, which enables the function of automatic section expansion. The authors proposed a solution aimed at shortening the work time of the powered-support-section operator. The research results made it possible to evaluate the usefulness of the proposed solution. This type of solution can be considered technical support in the process of coal mining in an underground mine. Analysis presented in this paper, along with results from research conducted and its conclusions, can be of practical help to enclosure users to improve reliability and achieve optimal performance.

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An innovative person detection system based on thermal imaging cameras dedicate for underground belt conveyors

Cited by 13 publications

References 2 publications

Numerical Study for Determining the Strength Limits of a Powered Longwall Support

Numerical Study for Determining the Strength Limits of a Powered Longwall Support

Rotation speed assessment for idlers in belt conveyors using image analysis

Development of a Hydraulic System for the Automatic Expansion of Powered Roof Support

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