A Study on the Realistic Content for Air Compressor Maintenance of the Urban Railway Vehicle

Kwon, Hwi-Jin; Cha, Jaehwan; Park, Yong‐Ki; Kim, Chul-Su

doi:10.24284/jkosur.2022.03.10.1.1231

Cited by 3 publications

(3 citation statements)

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“…The LNB is placed on the left side of the screen, and at the same time, a Side Navigation Bar (SNB) as shown in (c) is displayed on the right side. SNB is displayed with detailed information such as text and photos in a separate pop-up window [33]. In addition to this, there is "Hide menu" and "Open Scheme".…”

Section: Development Of Menus For User Interactionmentioning

confidence: 99%

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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Section: Development Of Menus For User Interactionmentioning

confidence: 99%

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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“…Railway operating organizations are conducting group education using these booklet-type manuals for job training of maintenance staff. However, this training method finds it difficult to not only manage time and space, but also manpower operation [1]. It is not suitable for learning the invisible and complicated electrical and pneumatic flow, because electric and pneumatic circuit diagrams provided in existing manuals are 2D.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, railway operating organizations are facing the problem of aging maintenance staff. The existing skilled staff are very old, and the proportion of novices is rapidly increasing [2]. Accordingly, the importance of systematic maintenance education is emerging.…”

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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Development of Virtual Reality-based Maintenance Training Content and Evaluation of User Experience: Focusing on Railway Vehicle Driving Gear Unit

Kwon¹,

Kang²,

Kim³

2023

dcs

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A Study on the Realistic Content for Air Compressor Maintenance of the Urban Railway Vehicle

Cited by 3 publications

References 0 publications

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

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

Development of Virtual Reality-based Maintenance Training Content and Evaluation of User Experience: Focusing on Railway Vehicle Driving Gear Unit

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