Papers by Keyword: Virtual Reality

Abstract: Chemical Oxygen Demand (COD) is an important factor in sewage treatment, serving as a significant indicator of the level of organic pollution in wastewater. Proper monitoring and analysis are essential to ensure the efficiency of treatment procedures. Students will be able to enhance their expertise through laboratory and pilot investigations focusing on the measurement of COD levels in sewage. Therefore, we developed a virtual laboratory that utilizes virtual reality technology to conduct the Chemical Oxygen Demand (COD) Determination experiment, which is essential for the Sewage Treatment Technology (TPL) course. This virtual laboratory utilizes the Oculus Quest 2 device. This simulation was developed for students of the Department of Industrial Chemical Engineering, Faculty of Vocational Studies, Institut Teknologi Sepuluh Nopember (ITS) Surabaya. This virtual reality experience was developed using Unity version 2019.4.21f LTS, the C# programming language, and the Unity WebXR Exporter. We then exported the application to WebXR. Although it was necessary to overcome specific challenges, this simulation provided significant benefits for functional and user testing.

Abstract: The emerging technologies presented by the fourth industrial revolution present new opportunities across the entire industrial sector. Among those paradigms that have seen rapid and significant growth in recent years are Virtual Reality (VR) and Augmented Reality (AR), collectively known as Extended Reality (XR). These technologies provide a wide range of unexplored solutions across the manufacturing industry, that promise to improve the effectiveness and speed of various existing processes. One such activity that could potentially stand to benefit from XR is the project and development of End of Arm Tooling (EOAT) for robot applications.The initial purpose of this work is to first study the XR technologies, their current applications across various industries, and the hardware and software involved in their use and development. Then, the main goal is to develop XR solutions to aid in the project, development, and assembly of EOAT systems for extracting injected parts from a mould. Checking in with industry professionals throughout the development of a VR application, the functionalities were tailored to their needs.

Abstract: Virtual reality (VR) and augmented reality (AR) have experienced a significant boom in recent years regarding their features and utility. They have become reliable tools that are applied in different fields and disciplines (medicine, industry, science, teaching, training, and robotics, among others). In the present research work, these technologies are used as tools for the training and maintenance of medical equipment. An application was developed using flexible programming and design software, such as Vuforia, Unity, SolidWorks, Visual Studio, and hardware such as smartphones and the HTC VIVE glasses. Considering the existing need and based on surveys carried out to medical and hospital technical staff, significant results were obtained about the use of AR and VR in the area of medicine. The use of interactive applications enables autonomous training, which may be executed at any time and it is also user-friendly; in addition, it enables achieving reduced maintenance time and improves the process of acquiring abilities, thus releasing resources for other purposes.

Abstract: The effect of bridge vibrationinduced bylive loads such as vehicles and pedestrians is an important factor of bridge fatigue damage. It takes much labor and material resource to perform vibration experiments on bridges subjected by real moving loads in field. In order to carry out laboratory experiments on bridges subjected by moving loads, a fixed load with harmonic vibration simulates a moving load on bridge in the beam theory. A simply supported bridge is considered in the present study. The dynamic responses of bridge under different loads are established by the analytic method. Amplitude and frequency of the simulated load are generated on the principle of equal displacements due to both a moving load and a fixed harmonic load impacting on a simply supported beam. Comparisons of numerical results of two types of load on the same beam indicate that the harmonic load can simulate a moving load effectively. It is possible that the field test on bridge can be carried out indoors.

Abstract: Modern tools are one of the essential elements of a successful process readiness in safety and security engineering. Modern IT technologies penetrate into the fields of safety and security. In the contribution the authors describe modern approaches in the education and training process for the case of fire and rescue units. Their target under review are simulation technologies in the form of augmented and virtual reality and their potential applications in safety and security practice.

Abstract: The paper is aimed at the problematics of environmental simulations as one of the efficient methods of behavioural research for exploring the reactions of respondents to certain environmental settings. It explores the contemporary situation of the development of simulation at different levels within the environment, serving as visualizations of designed spaces, for games and simulation /testing of subjective and objective responses to different environmental stimuli. In our long-term research at the BCDlab, we are focused on body conscious design, which means exploring relationships: body/nervous system and the environment with an aim to design human friendly solutions through spatial design. To gain our own experiences with environmental simulations and their impact, in 2015, the Faculty of Architecture BCDlab, developed an interactive application, BCD-APP, which works as a web interface and also in virtual reality. The paper presents the process of setting research methods and results of the first pilot tests of the app as a research tool, with a small controlled group of respondents. They were confronted with pre-selected settings of materials, colours and surface finishing, and with the setting of their own choice, the subjective and objective physiological reactions (brain waves and respiration) were measured by EEG sensors and evaluated in a Labchart environment.

Abstract: In spite of the potentially harmful effects of vibrations on the human body, a new path was recently opened for the use of these mechanical means in the therapeutic field. The stimulation of proprioceptive and exteroceptive sensitivity is the main target in both peripheral (diabetes type 1 and type 2) and central (stroke, Parkinson's disease multiple sclerosis) nervous system disorders, particularly for the recovery and maintenance of functional state. By the way the response to the treatment is highly variable from subject to subject. Our experimental apparatus consists of a virtual reality system "LEAP Motion" which involves the patient in the execution of visuo-manual tasks in a virtual environment while receiving vibrotactile stimulation. We also used a modular 36 channels EEG system and a vibratory stimulation system able of delivering vibratory stimuli perpendicular and tangential to the body surface area.The study evaluation of motor performance and the ability to perform the tasks of visuomotor task assigned, in the presence and absence of vibratory stimulation and in real time, evoked potentials in the cortex.The vibration frequency extended from 5 to 200 Hz and with accelerations between 0.3G and 1,5G with displacement amplitude of about 0.5 mm applied on the affected limb hand. As the frequency, the amplitude and the direction of the vibration may vary we studied the relationship between the characteristics of the stimulus and the perception in the cerebral cortex, or other levels of the nervous system, studying potential models of elicitation of the somatosensory system. In this regard, our study took into account patients with Parkinson's disease and in particular evoked potentials N18 N20 N24 N30 particularly related to tactile stimulus, and indicative of the level of perception and processing in the brain of the Parkinson's patient.

Abstract: Virtual and augmented reality are two big buzzwords in the industrial context and they are increasingly used. A main argument for the use of virtual techniques are their economic benefits, which are confirmed by pilot studies. However there is a research gap on how virtual techniques influence the user. This study addresses the impacts of virtual environments on presence, usability and user experience compared to a real environment. Therefore two groups of participants take part in a geocaching tour through the real or virtual city center of Chemnitz and rate the presence of the environment as well as the usability and user experience of a mobile navigation application. The results of 60 participants show that there are general differences between the environments and verify the strengths and weaknesses of virtual environments: Virtual techniques have a positive influence on the user, like a more engaging experience and a perceived higher hedonic quality of the product. Beside these benefits the negative effects have to be considered too, because they influence the ratings of the user. This study shows the potential of virtual techniques for the user and also the deficits, that need to be improved.

Abstract: To change the empty talk phenomenon of the research of a current AC servo system, virtual reality technology is used to develop the virtual simulation system of an AC servo system. This article described the fundamental principle of the sinusoidal pulse width modulation, introduced the functional structure of the virtual system. The fundamental principle of a wave display and the treatment of the key detail problems were solved. In the end, an example of the AC servo system simulation was given. The simulation of the AC servo system can be used as a soft device instead of a real one, and provide a technology platform for the development of a new AC servo system.

Abstract: Nowadays, strong influence of technology development in all areas of science and arts (architecture) can be observed. Therefore, it is not surprising that some of the contemporary topics in architectural discourse (particularly in the context of cutting edge technologies) are closely related to technology. For example, new mixed reality devices coming to the commercial market belong to the area of research that is working with mixed realities and virtual spaces. Advantage of this technology is that it enables more dynamic and realistic perception of the computer designed world. Recent development and better accessibility of MR hardware has brought higher attention of designers to this problematic. Together with technology of games engines, the new powerful designing tool is emerging. The existence of this technology has an ability to transform design processes in the field of architecture.