Pub Date : 2023-04-27DOI: 10.14232/analecta.2023.2.9-15
V. Néma, A. Jakab, J. Molnár, Balázs P. Szabó, Eszter Szőke-Trenyik, J. Mihalkó, Balázs P. Szabó
Elasticity and stress absorption are present in many different materials in our daily life. Understanding how materials behave under pressure (whether that is constant or dynamic), and how and when they deform can be fundamental in terms of their success or longevity. Elastic behaviour is present in many different forms in different materials, e.g.: meats or other food. Interestingly, elasticity is also a major issue in the oral cavity, when talking about healthy dental tissues, such as dentin or even special dental restorative materials. The article focuses on the general mechanical behaviour of elastic and viscoelastic materials and measurements performed on them.
{"title":"Behaviour of flexible/elastic materials under quasi-static force","authors":"V. Néma, A. Jakab, J. Molnár, Balázs P. Szabó, Eszter Szőke-Trenyik, J. Mihalkó, Balázs P. Szabó","doi":"10.14232/analecta.2023.2.9-15","DOIUrl":"https://doi.org/10.14232/analecta.2023.2.9-15","url":null,"abstract":"Elasticity and stress absorption are present in many different materials in our daily life. Understanding how materials behave under pressure (whether that is constant or dynamic), and how and when they deform can be fundamental in terms of their success or longevity. Elastic behaviour is present in many different forms in different materials, e.g.: meats or other food. Interestingly, elasticity is also a major issue in the oral cavity, when talking about healthy dental tissues, such as dentin or even special dental restorative materials. The article focuses on the general mechanical behaviour of elastic and viscoelastic materials and measurements performed on them.","PeriodicalId":213647,"journal":{"name":"Analecta Technica Szegedinensia","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128348522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-27DOI: 10.14232/analecta.2023.2.16-23
Á. Molnár, Ádám Lőrincz, Dóra Szepesi-Bencsik, J. Mihalkó
Nowadays, the consumption of bison meat is becoming more widespread worldwide, while it’s experiencing a renaissance in the United States. For the industry, this could lead to the emergence of a new market sector in the future. It is important to examine the extent to which the quality of its meat differs from that of the usual cattle or buffalo returning to the public consciousness. Our measurements were performed on the loin of bison, buffalo and cattle, including Angus cattle based on the consumer price per 100 grams of product, instrumental colour measurement, instrumental stock measurement, cooking, roasting and pressing loss, instrumental analytical examination and sensory evaluation. During our research, we concluded that bison meat may become a very popular product in Hungary in the future. There is a clear place for the consumption of both buffalo meat and bison meat in a health-conscious diet based on the measured results.
{"title":"Comparative analysis of cattle, buffalo and bison meat","authors":"Á. Molnár, Ádám Lőrincz, Dóra Szepesi-Bencsik, J. Mihalkó","doi":"10.14232/analecta.2023.2.16-23","DOIUrl":"https://doi.org/10.14232/analecta.2023.2.16-23","url":null,"abstract":"Nowadays, the consumption of bison meat is becoming more widespread worldwide, while it’s experiencing a renaissance in the United States. For the industry, this could lead to the emergence of a new market sector in the future. It is important to examine the extent to which the quality of its meat differs from that of the usual cattle or buffalo returning to the public consciousness. Our measurements were performed on the loin of bison, buffalo and cattle, including Angus cattle based on the consumer price per 100 grams of product, instrumental colour measurement, instrumental stock measurement, cooking, roasting and pressing loss, instrumental analytical examination and sensory evaluation. During our research, we concluded that bison meat may become a very popular product in Hungary in the future. There is a clear place for the consumption of both buffalo meat and bison meat in a health-conscious diet based on the measured results.","PeriodicalId":213647,"journal":{"name":"Analecta Technica Szegedinensia","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125537819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-27DOI: 10.14232/analecta.2023.2.48-58
Yang Song, J. Sárosi, Xuanzhen Cen, István Bíró
Human motion analysis and measurement technology have been widely used in the fields of medical treatment, sports science, and rehabilitation. In clinical practice, motion analysis has been applied in the diagnosis and individualized treatment planning of various musculoskeletal diseases, and it is also an important objective scientific method to evaluate the therapeutic effect and the effectiveness of medical equipment. This study aimed to introduce the common modern motion capture measurement technology and equipment, the clinical application and limitations of motion analysis, and the possible development trend of motion analysis measuring techniques in the future. Motion analysis and measurement systems and medical image measurement and analysis technology have made landmark improvements over the past few decades in terms of orthopaedical biomechanics. Nevertheless, limitations still exist, both subjective and objective. All these drawbacks have promoted the exploration of the integrated methods that have now been widely used in motion analysis. The results of the case study about the subject-specific finite element modeling of the foot and sports shoe complex have also shown great consistency. Nevertheless, several possible future directions for motion analysis measuring techniques still exist. In the future, the progress of motion analysis and measurement methods will simultaneously drive the progress of orthopedics, rehabilitation, precision personalized medicine, and medical engineering.
{"title":"Human motion analysis and measurement techniques: current application and developing trend","authors":"Yang Song, J. Sárosi, Xuanzhen Cen, István Bíró","doi":"10.14232/analecta.2023.2.48-58","DOIUrl":"https://doi.org/10.14232/analecta.2023.2.48-58","url":null,"abstract":"Human motion analysis and measurement technology have been widely used in the fields of medical treatment, sports science, and rehabilitation. In clinical practice, motion analysis has been applied in the diagnosis and individualized treatment planning of various musculoskeletal diseases, and it is also an important objective scientific method to evaluate the therapeutic effect and the effectiveness of medical equipment. This study aimed to introduce the common modern motion capture measurement technology and equipment, the clinical application and limitations of motion analysis, and the possible development trend of motion analysis measuring techniques in the future. Motion analysis and measurement systems and medical image measurement and analysis technology have made landmark improvements over the past few decades in terms of orthopaedical biomechanics. Nevertheless, limitations still exist, both subjective and objective. All these drawbacks have promoted the exploration of the integrated methods that have now been widely used in motion analysis. The results of the case study about the subject-specific finite element modeling of the foot and sports shoe complex have also shown great consistency. Nevertheless, several possible future directions for motion analysis measuring techniques still exist. In the future, the progress of motion analysis and measurement methods will simultaneously drive the progress of orthopedics, rehabilitation, precision personalized medicine, and medical engineering.","PeriodicalId":213647,"journal":{"name":"Analecta Technica Szegedinensia","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127314545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-27DOI: 10.14232/analecta.2023.2.24-31
Yao Meng, I. Bíró, J. Sárosi
Markerless motion capture system and X-ray fluoroscopy as two markerless measurement systems were introduced to the application method in sports biomechanical areas. An overview of the technological process, data accuracy, suggested movements, and recommended body parts were explained. The markerless motion capture system consists of four parts: camera, body model, image feature, and algorithms. Even though the markerless motion capture system seems promising, it is not yet known whether these systems can be used to achieve the required accuracy and whether they can be appropriately used in sports biomechanics and clinical research. The biplane fluoroscopy technique analyzes motion data by collecting, image calibrating, and processing, which is effective for determining small joint kinematic changes and calculating joint angles. The method was used to measure walking and jumping movements primarily because of the experimental conditions and mainly to detect the data of lower limb joints.
{"title":"Markerless measurement techniques for motion analysis in sports science","authors":"Yao Meng, I. Bíró, J. Sárosi","doi":"10.14232/analecta.2023.2.24-31","DOIUrl":"https://doi.org/10.14232/analecta.2023.2.24-31","url":null,"abstract":"Markerless motion capture system and X-ray fluoroscopy as two markerless measurement systems were introduced to the application method in sports biomechanical areas. An overview of the technological process, data accuracy, suggested movements, and recommended body parts were explained. The markerless motion capture system consists of four parts: camera, body model, image feature, and algorithms. Even though the markerless motion capture system seems promising, it is not yet known whether these systems can be used to achieve the required accuracy and whether they can be appropriately used in sports biomechanics and clinical research. The biplane fluoroscopy technique analyzes motion data by collecting, image calibrating, and processing, which is effective for determining small joint kinematic changes and calculating joint angles. The method was used to measure walking and jumping movements primarily because of the experimental conditions and mainly to detect the data of lower limb joints.","PeriodicalId":213647,"journal":{"name":"Analecta Technica Szegedinensia","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122582576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-17DOI: 10.14232/analecta.2023.1.16-27
Sebastian Cabezas, G. Hegedűs, P. Bencs
The analysis of heat transfer in solid bodies with orthogonal geometries and knowledge thereof, is of vast importance in different fields of engineering and research. An important field of study is the thermal analysis in machine-parts that in most cases are designed and shaped with orthogonal geometries. Nevertheless, due to the high complexity and the cost that thermal experiments represent, FEM analysis and numerical solutions are used to foresee thermal fields on these components. These methodologies are certainly reliable, although may vary from real experiments. On that account, this paper presents a thermal experimental test in a solid cylinder of length and , made of ISO C45 steel that emulates a machine-part (cylindrical parts as shafts, fasteners and the like). The temperature fields along the longitudinal direction were analyzed in steady and transient state under homogeneous boundary conditions of the first kind (prescribed temperatures at the boundaries). The three solutions, experimental, numerical and FEM simulations were compared with the purpose of validating the results obtained by each method of solution respectively.
{"title":"Thermal experimental and numerical heat transfer analysis of a solid\u0000 cylinder in longitudinal direction","authors":"Sebastian Cabezas, G. Hegedűs, P. Bencs","doi":"10.14232/analecta.2023.1.16-27","DOIUrl":"https://doi.org/10.14232/analecta.2023.1.16-27","url":null,"abstract":"The analysis of heat transfer in solid bodies with orthogonal\u0000 geometries and knowledge thereof, is of vast importance in different fields\u0000 of engineering and research. An important field of study is the thermal\u0000 analysis in machine-parts that in most cases are designed and shaped with\u0000 orthogonal geometries. Nevertheless, due to the high complexity and the\u0000 cost that thermal experiments represent, FEM analysis and numerical\u0000 solutions are used to foresee thermal fields on these components. These\u0000 methodologies are certainly reliable, although may vary from real\u0000 experiments. On that account, this paper presents a thermal experimental\u0000 test in a solid cylinder of length and , made of ISO C45 steel that\u0000 emulates a machine-part (cylindrical parts as shafts, fasteners and the\u0000 like). The temperature fields along the longitudinal direction were\u0000 analyzed in steady and transient state under homogeneous boundary\u0000 conditions of the first kind (prescribed temperatures at the boundaries).\u0000 The three solutions, experimental, numerical and FEM simulations were\u0000 compared with the purpose of validating the results obtained by each method\u0000 of solution respectively.","PeriodicalId":213647,"journal":{"name":"Analecta Technica Szegedinensia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116056664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-17DOI: 10.14232/analecta.2023.1.44-51
E. Lendvai, Diána Dobos-Nagy
The term healthy lifestyle is almost burned into our way of thinking. At the same time, diseases caused by certain allergens are also becoming more common. It is therefore inevitable that many people are looking for a new source of food instead of traditional bread. The Abonett product line offers them an alternative solution. In the course of our work, we tried to assess the familiarity and consumption of these products, as well as the opinions formed about them. To this end, we conducted an online questionnaire survey in the fall of 2021, which we shared on social media. In our opinion, opening to new segments, such as rice-based extruded products, soup pearls, or even sweet and salty snacks, is a possible option. The use of special ingredients and flavors can be interesting for customers. The information obtained during our research can be of help in the marketing strategy planning of the company, as well as in the analysis of the types of behavior related to consumers.
{"title":"Consumption of organic and gluten-free products of Abonett Kft.\u0000 (Ltd.)","authors":"E. Lendvai, Diána Dobos-Nagy","doi":"10.14232/analecta.2023.1.44-51","DOIUrl":"https://doi.org/10.14232/analecta.2023.1.44-51","url":null,"abstract":"The term healthy lifestyle is almost burned into our way of\u0000 thinking. At the same time, diseases caused by certain allergens are also\u0000 becoming more common. It is therefore inevitable that many people are\u0000 looking for a new source of food instead of traditional bread. The Abonett\u0000 product line offers them an alternative solution. In the course of our\u0000 work, we tried to assess the familiarity and consumption of these products,\u0000 as well as the opinions formed about them. To this end, we conducted an\u0000 online questionnaire survey in the fall of 2021, which we shared on social\u0000 media. In our opinion, opening to new segments, such as rice-based extruded\u0000 products, soup pearls, or even sweet and salty snacks, is a possible\u0000 option. The use of special ingredients and flavors can be interesting for\u0000 customers. The information obtained during our research can be of help in\u0000 the marketing strategy planning of the company, as well as in the analysis\u0000 of the types of behavior related to consumers.","PeriodicalId":213647,"journal":{"name":"Analecta Technica Szegedinensia","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134186450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-17DOI: 10.14232/analecta.2023.1.1-9
Rajab Ghabour, P. Korzenszky
The Visegrád group's energy security is attributed to the national energy potential of each country. The energy potential results from the lack of crude oil and natural gas resources, limited access to the transmission network, and limited fuel storage. This bloc relies on raw material supplies from Russia, which is not evenly applied to all group members. Poland and Hungary have good storing potential, but it is not enough to achieve energy security and independence. Russia aims to keep control of this market while group members try diversifying their supplies to increase energy security. The purpose of this article is to present the energy balance in the Visegrád region. The analysis is based on the status of the renewable energy targets in the production, demand, import and export. Also, to determine the stability degree of these energy parameters. The material source is the literature and the energetic data from the European statistic's official agency Eurostat and European commission reports. From an energetic aspect, the four capitals were considered as a case study for a food processing plant with annual hot water demand of 43 MWh to evaluate the performance of the solar thermal energy. The simulation was conducted using T*Sol software considering 16 evacuated-tube collectors B. Schweizer Energy AG manufacturer. The chosen process heating system has a buffer tank and a continuous flow heater. Each collector was inclined according to the optimum angle for each case study. As a result, it was found that the energy demand in the Visegrád region is entirely related to the economic situation. In contrast, Political and energy development have a more significant impact than economic factors. From an energetic aspect, solar thermal energy is evident for Hungary and Slovakia since they have up to 20% solar yields compared to Poland and the Czech Republic. Nevertheless, the solar irradiation on the collector field is high enough to consider solar thermal energy solutions integrated into food and industrial processes.
Visegrád集团的能源安全取决于每个国家的国家能源潜力。能源潜力源于原油和天然气资源的缺乏、输电网的限制以及燃料储存的限制。该集团依赖俄罗斯的原材料供应，但并非所有成员国都能享受到这种供应。波兰和匈牙利拥有良好的储能潜力，但还不足以实现能源安全和独立。俄罗斯的目标是保持对该市场的控制，而欧佩克成员国则试图使其供应多样化，以提高能源安全。本文的目的是呈现Visegrád地区的能量平衡。该分析是基于可再生能源目标在生产、需求、进出口方面的现状。并确定了这些能量参数的稳定程度。材料来源是来自欧洲统计官方机构欧盟统计局和欧盟委员会报告的文献和有力数据。从能源的角度来看，这四个首都被视为一个食品加工厂的案例研究，年热水需求为43兆瓦时，以评估太阳能热能的性能。采用T*Sol软件对16台B. Schweizer Energy AG公司的真空管集热器进行了仿真。所选择的过程加热系统具有缓冲罐和连续流加热器。每个收集器根据每个案例研究的最佳角度倾斜。结果发现，Visegrád地区的能源需求完全与经济形势相关。相比之下，政治和能源发展的影响比经济因素更为显著。从能源方面来看，太阳能热能在匈牙利和斯洛伐克是显而易见的，因为与波兰和捷克共和国相比，它们的太阳能发电量高达20%。然而，集热器领域的太阳辐照足够高，可以考虑将太阳能热能解决方案集成到食品和工业过程中。
{"title":"Economic and energetic assessment of industrial-scale solar thermal\u0000 energy in the Visegrad Region","authors":"Rajab Ghabour, P. Korzenszky","doi":"10.14232/analecta.2023.1.1-9","DOIUrl":"https://doi.org/10.14232/analecta.2023.1.1-9","url":null,"abstract":"The Visegrád group's energy security is attributed to the national\u0000 energy potential of each country. The energy potential results from the\u0000 lack of crude oil and natural gas resources, limited access to the\u0000 transmission network, and limited fuel storage. This bloc relies on raw\u0000 material supplies from Russia, which is not evenly applied to all group\u0000 members. Poland and Hungary have good storing potential, but it is not\u0000 enough to achieve energy security and independence. Russia aims to keep\u0000 control of this market while group members try diversifying their supplies\u0000 to increase energy security. The purpose of this article is to present the\u0000 energy balance in the Visegrád region. The analysis is based on the status\u0000 of the renewable energy targets in the production, demand, import and\u0000 export. Also, to determine the stability degree of these energy parameters.\u0000 The material source is the literature and the energetic data from the\u0000 European statistic's official agency Eurostat and European commission\u0000 reports. From an energetic aspect, the four capitals were considered as a\u0000 case study for a food processing plant with annual hot water demand of 43\u0000 MWh to evaluate the performance of the solar thermal energy. The simulation\u0000 was conducted using T*Sol software considering 16 evacuated-tube collectors\u0000 B. Schweizer Energy AG manufacturer. The chosen process heating system has\u0000 a buffer tank and a continuous flow heater. Each collector was inclined\u0000 according to the optimum angle for each case study. As a result, it was\u0000 found that the energy demand in the Visegrád region is entirely related to\u0000 the economic situation. In contrast, Political and energy development have\u0000 a more significant impact than economic factors. From an energetic aspect,\u0000 solar thermal energy is evident for Hungary and Slovakia since they have up\u0000 to 20% solar yields compared to Poland and the Czech Republic.\u0000 Nevertheless, the solar irradiation on the collector field is high enough\u0000 to consider solar thermal energy solutions integrated into food and\u0000 industrial processes.","PeriodicalId":213647,"journal":{"name":"Analecta Technica Szegedinensia","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128036952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-16DOI: 10.14232/analecta.2023.1.28-43
T. Mogaji
In this paper, performance evaluation of a developed Solar-Powered Vapor Absorption Refrigeration (VAR) System using the NH3-H2O solution as working fluid is done. The cooling system has total storage space of 0.038 m3 with capacity to accommodate about 0.04 metric tonnes (40kg) of items such as to cool water and other drinks for human comfort applicable in rural regions where electricity is unreliable or non-existent. A solar Photovoltaic (PV) panel of 300W, 40W Direct Current (DC) heating element with a 20A solar controller were designed to power the developed cooling system. Measurements of important operational parameters such as the generator, ambient, evaporator, cabinet and condenser temperatures were studied and measured from the system. Performance evaluation of the system refrigerating capacity was determined in terms of its cooling performance (COP) and the system efficiency ratio (ƞ) based on no load and on load conditions. The system when tested has COP of 0.1275 at an average cabinet temperature (Tr) of 9.0 ℃ against an average room temperature of 25.8 ℃. Additionally, the system had an overall refrigerating efficiency ratio of 8.25. The performance test results revealed that the developed cooling system performed well in terms of temperature regulation for refrigeration purposes
{"title":"Development of a solar-powered vapour absorption cooling system","authors":"T. Mogaji","doi":"10.14232/analecta.2023.1.28-43","DOIUrl":"https://doi.org/10.14232/analecta.2023.1.28-43","url":null,"abstract":"In this paper, performance evaluation of a developed Solar-Powered Vapor Absorption Refrigeration (VAR) System using the NH3-H2O solution as working fluid is done. The cooling system has total storage space of 0.038 m3 with capacity to accommodate about 0.04 metric tonnes (40kg) of items such as to cool water and other drinks for human comfort applicable in rural regions where electricity is unreliable or non-existent. A solar Photovoltaic (PV) panel of 300W, 40W Direct Current (DC) heating element with a 20A solar controller were designed to power the developed cooling system. Measurements of important operational parameters such as the generator, ambient, evaporator, cabinet and condenser temperatures were studied and measured from the system. Performance evaluation of the system refrigerating capacity was determined in terms of its cooling performance (COP) and the system efficiency ratio (ƞ) based on no load and on load conditions. The system when tested has COP of 0.1275 at an average cabinet temperature (Tr) of 9.0 ℃ against an average room temperature of 25.8 ℃. Additionally, the system had an overall refrigerating efficiency ratio of 8.25. The performance test results revealed that the developed cooling system performed well in terms of temperature regulation for refrigeration purposes","PeriodicalId":213647,"journal":{"name":"Analecta Technica Szegedinensia","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123395198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-16DOI: 10.14232/analecta.2023.1.10-15
Alexandra Hegedűs, J. Simon, J. Sárosi
AMRs (Autonomous Mobile Robots) are driverless vehicles programmed to perform a variety of tasks and are often used to transport goods or materials. However, there can be several problems with the driving performance of this type of vehicle. Safety in the workplace is important everywhere, but there are some areas that are particularly exposed to safety risks. Limited visibility is the main cause of accidents at work. Yet, robots can map these dangerous areas with their sensors. We will present a mobile robotic sensor development that can be implemented to increase the security of robotic warehouses. Testing is necessary in order to check the quality of existing defects in safety elements before delivery and to carry out a risk assessment. Our goal was to add a safety element to the robot to prevent the most common problem, namely it is colliding with a forklift truck, hitting objects outside the sensor planes or hanging in. Based on our experience with robots over the years, this has been a big challenge, as we have had several such collisions. Therefore, we selected and installed a modern 3D camera system and tested its compliance with the safety requirements and the difference between the safety level of a robot without 3D sensor (Alpha) and a robot with 3D sensor (Beta), based on the knowledge of the installed camera.
{"title":"3D camera augmented Autonomous Mobile Robot for intralogistics\u0000 purposes","authors":"Alexandra Hegedűs, J. Simon, J. Sárosi","doi":"10.14232/analecta.2023.1.10-15","DOIUrl":"https://doi.org/10.14232/analecta.2023.1.10-15","url":null,"abstract":"AMRs (Autonomous Mobile Robots) are driverless vehicles programmed\u0000 to perform a variety of tasks and are often used to transport goods or\u0000 materials. However, there can be several problems with the driving\u0000 performance of this type of vehicle. Safety in the workplace is important\u0000 everywhere, but there are some areas that are particularly exposed to\u0000 safety risks. Limited visibility is the main cause of accidents at work.\u0000 Yet, robots can map these dangerous areas with their sensors. We will\u0000 present a mobile robotic sensor development that can be implemented to\u0000 increase the security of robotic warehouses. Testing is necessary in order\u0000 to check the quality of existing defects in safety elements before delivery\u0000 and to carry out a risk assessment. Our goal was to add a safety element to\u0000 the robot to prevent the most common problem, namely it is colliding with a\u0000 forklift truck, hitting objects outside the sensor planes or hanging in.\u0000 Based on our experience with robots over the years, this has been a big\u0000 challenge, as we have had several such collisions. Therefore, we selected\u0000 and installed a modern 3D camera system and tested its compliance with the\u0000 safety requirements and the difference between the safety level of a robot\u0000 without 3D sensor (Alpha) and a robot with 3D sensor (Beta), based on the\u0000 knowledge of the installed camera.","PeriodicalId":213647,"journal":{"name":"Analecta Technica Szegedinensia","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116369556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-05DOI: 10.14232/analecta.2022.1.27-33
Stelică Timofte, Z. Korka, A. Gerocs, Elena Stela Wisznovszky (Muncut), Camelia Rodica Sfetcu
Today there is a great deal of controversy over the operation of inertial propulsion drives (IPD), as they challenge the laws of Newtonian mechanics. Starting with the last decades of the previous century, many devices that use the centrifugal force to generate linear propulsion were patented. Regrettably, whether we are talking about the initial, or the most recent attempts, only a few of these systems passed the patent stage and were involved for practical applications.The aim of this paper is to present an IPD, developed by the authors, which uses for generating linear motion the kinetic energy of several masses, placed in the articulation points of the links of a chain drive. The masses placed equidistantly along the half-length of the chain perform a complex movement, consisting of the specific displacement of the chain elements and a rotation around an axis, that is parallel to the line which joins the centres of the chain wheels. After deducting the equations of the geometric coordinates of the masses, the total propulsion force was computed. The obtained results are supporting the ability of the IPD to generate propulsive force and linear motion.
{"title":"Kinematic and dynamic investigation of a novel inertial propulsion drive","authors":"Stelică Timofte, Z. Korka, A. Gerocs, Elena Stela Wisznovszky (Muncut), Camelia Rodica Sfetcu","doi":"10.14232/analecta.2022.1.27-33","DOIUrl":"https://doi.org/10.14232/analecta.2022.1.27-33","url":null,"abstract":"Today there is a great deal of controversy over the operation of inertial propulsion drives (IPD), as they challenge the laws of Newtonian mechanics. Starting with the last decades of the previous century, many devices that use the centrifugal force to generate linear propulsion were patented. Regrettably, whether we are talking about the initial, or the most recent attempts, only a few of these systems passed the patent stage and were involved for practical applications.The aim of this paper is to present an IPD, developed by the authors, which uses for generating linear motion the kinetic energy of several masses, placed in the articulation points of the links of a chain drive. The masses placed equidistantly along the half-length of the chain perform a complex movement, consisting of the specific displacement of the chain elements and a rotation around an axis, that is parallel to the line which joins the centres of the chain wheels. After deducting the equations of the geometric coordinates of the masses, the total propulsion force was computed. The obtained results are supporting the ability of the IPD to generate propulsive force and linear motion.","PeriodicalId":213647,"journal":{"name":"Analecta Technica Szegedinensia","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133857038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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