Design of Augmented Reality Training Content for Railway Vehicle Maintenance Focusing on the Axle-Mounted Disc Brake System

Kwon, Hwi-Jin; Lee, Seung-Il; Park, Juhyung; Kim, Chul-Su

doi:10.3390/app11199090

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…The advancement of computer technology has facilitated the integration of 3D technology in skill training programs, including automobile maintenance training [37], railway axle disc brake maintenance [38], tunnel fire emergency drills [39], ship fire emergency drills [40], railway workers' skill training [41], and train crew management [42]. The use of 3D technology enables the creation of a natural world in the information space that dynamically simulates disaster occurrences with negative outcomes, such as damages, losses, injuries, and fatalities.…”

Section: Emergency Drill Based On 3d Technologymentioning

confidence: 99%

Digital twin for multi-scenario emergency of railway passenger stations

Wang,

Bai,

et al. 2024

Front. Phys.

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Emergency disposal is a critical aspect for railway stations to ensure safety. This requires the implementation of emergency plan simulations and cost-effective immersive drills. In the paper, we incorporate a set of disposals for events into emergency processes and model the personnel, supplies, and equipment to create multiple emergency scenarios. Additionally, we introduce a digital twin-based solution for multiple scenarios of emergencies. This solution completely restores the key components of a station in the information space and provides an immersive way for emergency disposals. The four-dimensional model used in the solution simulates and interacts with the station, and it is composed of the details of passenger station physical entity, multi-scenario emergency virtual entity, digital twin connection, and emergency twin service. The digital twin for versatile emergency events such as fire disaster, natural disaster (e.g., flood, earthquake), social security incident, and public health event have been constructed using the model. The solution was tested at Qinghe, a station during Beijing-Zhangjiakou high-speed railway in China. By utilizing the actual operation data of Qinghe, we validated the multi-scenario emergency drills, simulated the corresponding emergency disposal plans, and assessed the proposed solution from three aspects: the fidelity of the real-world simulation, coverage of the multiple emergency scenarios, and the user-friendliness. The evaluations indicate that the proposed solution attains good score and the acceptable level of system usability scale.

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Section: Emergency Drill Based On 3d Technologymentioning

confidence: 99%

Digital twin for multi-scenario emergency of railway passenger stations

Wang,

Bai,

et al. 2024

Front. Phys.

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“…Recently, most of the AR application cases for maintenance in the railway vehicle sector have been developed mainly on main mechanical equipment such as boogie and braking devices conducted by the research group of the National University of Transportation in Korea [23,24]. In the case of the air compressor conducted in this study, only some applications have been reported to manufacture industrial screw-type air compressors [25].…”

Section: Introductionmentioning

confidence: 96%

Development and Usability Evaluation of Mobile Augmented Reality Contents for Railway Vehicle Maintenance Training: Air Compressor Case

Kang,

Kwon,

Chung

et al. 2024

Adv. sci. technol. eng. syst. j.

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The air compressor of a railroad vehicle is an important equipment that produces compressed air used in braking systems. New visual interaction techniques were proposed and evaluated to develop effective augmented reality content for maintenance support and training of this device. To this end, modeling techniques capable of fast animation, storyboard production to support light maintenance, and visualization algorithms that implement fluid flow have been developed. In the case of air compressors using compressed air, 2D-3D line matching distance calculation algorithm and modified flow generation algorithm were proposed to implement fluid flow for visualization. If two algorithms are used at the same time, the educational effect can be enhanced by visualizing the air flow in the 3D object simultaneously on a 2D air pipe diagram. In addition, the use of flow generation algorithm alone can visualize fluid flow or quantity control, such as air discharge or lubricant supplementation. As a result of usability evaluation of 100 users of the developed air compressor augmented reality content, the system usability scale score was 76.65, which was good. Similarly, the user experience score using six questionnaires was very good with an average of 4.12. Therefore, it was found that this training content could be used very effectively for air compressor maintenance support and training at the site.

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“…Accordingly, the importance of systematic maintenance education is emerging. Therefore, to enhance the training effect of maintenance staff as well as overcome the shortcomings of booklet-type manuals, developing 3D learning content using AR technique is essential [3].…”

Section: Introductionmentioning

confidence: 99%

Development and Evaluation of Augmented Reality Learning Content for Pneumatic Flow: Case Study on Brake Operating Unit of Railway Vehicle

Kwon

Kim

2023

IEEE Access

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The Brake operating unit (BOU) of a railway vehicle is one of the important systems for controlling the braking of the train. Because this system uses compressed air, it is difficult to understand and train the system. The existing education method involves learning the pneumatic flow of various control air in a 2D pneumatic circuit diagram based on a maintenance manual. However, in the actual braking system, it was difficult to learn effectively because the air flows in 3D. In order to solve these problems, the improvement of the training technique using the new 3D augmented reality (AR) was performed. In this study, to increase the learning effect of air brake flow, a technique for simultaneously displaying the pneumatic flow in 2D circuit diagram and 3D model was proposed. First, the distance ratio for simultaneous display can be determined using the proposed streamline matching variable calculation algorithm (SLMVC) that uses position and animation duration as input variables. Second, to avoid the complexity of using the 24 variables of the Particle System module in Unity, an existing universal 3D platform, a continuously emission property correction algorithm (CEPC) that can output particle objects as a streamline using only 4 properties (e.g., start lifetime, start speed, emission rate over time, start delay). As a result, the following 6 different types of BOU air pressure could be simultaneously displayed in 2D and 3D (e.g., AC, BC, SR, SBR, AS1, AS2). Therefore, maintenance staff can effectively learn complex pneumatic flow. To verify the usability of the developed content, a survey using the NASA-TLX technique was conducted targeting 60 maintenance staff. As a result of the comparison between Group A using the existing maintenance manual and Group B using the developed AR content, the perceived workload decreased by 28%. In particular, the frustration part decreased by 64% and the performance part decreased by 62%, indicating that the usability of AR content was very good.INDEX TERMS Railway vehicle, augmented reality, brake operating unit, pnematic flow, particle effect.The associate editor coordinating the review of this manuscript and approving it for publication was Jesus Felez .

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Design of Augmented Reality Training Content for Railway Vehicle Maintenance Focusing on the Axle-Mounted Disc Brake System

Cited by 7 publications

References 19 publications

Digital twin for multi-scenario emergency of railway passenger stations

Digital twin for multi-scenario emergency of railway passenger stations

Development and Usability Evaluation of Mobile Augmented Reality Contents for Railway Vehicle Maintenance Training: Air Compressor Case

Development and Evaluation of Augmented Reality Learning Content for Pneumatic Flow: Case Study on Brake Operating Unit of Railway Vehicle

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