Pub Date : 2023-01-07DOI: 10.1109/ICREST57604.2023.10070058
Sheikh Md. Nayeem, Zahid Hasan Anik, Navila Rahman Nadi, K. M. Salim
A grid tie inverter (GTI) requires a proper adjustment of Power Factor (PF) to provide efficient power supply to the utility power grid while converting the DC power to an adjustable grid based AC power. Additionally, the inverter has to be designed based on a minimal total harmonic distortion that occurs on the utility power grid voltage and current while such conversion occurs. Presented herein is a power and control system architecture of a 500 W inverter for achieving a better power factor (PF) and which can efficiently diminish the harmonic content out of the utility power grid. Implementing an inverter that consists of a full-bridge switching configuration, the single stage of DC-to-AC power conversion is inventively designed hereby to attain maximum power factor as well to generate a minimum THD containing sinusoidal output voltage that is adjustable with the grid, is the novel feature of this paper.
并网逆变器(grid - tie inverter, GTI)在将直流电源转换为基于电网的可调交流电源的同时，需要适当调节功率因数(Power Factor, PF)，为公用电网提供高效的供电。此外，逆变器的设计必须基于在这种转换发生时对公用电网电压和电流产生的最小总谐波畸变。本文提出了一种500w逆变器的电源和控制系统架构，以获得更好的功率因数(PF)，并能有效地降低公用电网的谐波含量。本文的新颖之处在于，实现了一种由全桥开关配置组成的逆变器，创造性地设计了单级直流到交流的功率转换，以获得最大的功率因数，并产生最小的THD，其中包含可随电网调节的正弦输出电压。
{"title":"Analysis of a Grid Tie Inverter for attaining the Maximum Power Factor and Minimum Total Harmonic Distortion","authors":"Sheikh Md. Nayeem, Zahid Hasan Anik, Navila Rahman Nadi, K. M. Salim","doi":"10.1109/ICREST57604.2023.10070058","DOIUrl":"https://doi.org/10.1109/ICREST57604.2023.10070058","url":null,"abstract":"A grid tie inverter (GTI) requires a proper adjustment of Power Factor (PF) to provide efficient power supply to the utility power grid while converting the DC power to an adjustable grid based AC power. Additionally, the inverter has to be designed based on a minimal total harmonic distortion that occurs on the utility power grid voltage and current while such conversion occurs. Presented herein is a power and control system architecture of a 500 W inverter for achieving a better power factor (PF) and which can efficiently diminish the harmonic content out of the utility power grid. Implementing an inverter that consists of a full-bridge switching configuration, the single stage of DC-to-AC power conversion is inventively designed hereby to attain maximum power factor as well to generate a minimum THD containing sinusoidal output voltage that is adjustable with the grid, is the novel feature of this paper.","PeriodicalId":389360,"journal":{"name":"2023 3rd International Conference on Robotics, Electrical and Signal Processing Techniques (ICREST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131126263","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 : 2023-01-07DOI: 10.1109/ICREST57604.2023.10070037
Hafzur Rahman Chowdhury, Sarowar Hossain, M. H. Imam
Since robot-assisted surgical systems incorporate many of the advantages of minimally invasive surgery, such as decreased postoperative trauma, faster recoveries, and lower overall treatment costs, they are increasingly being used in medical procedures. Using these robotic systems, surgeons can work in areas where traditional surgical tools would be impractical, such as tiny; tight the capabilities of a human hand as an operator are typically somewhat restricted. The act of movement itself helps to improve this sort of dexterity. Robotic scaling, which converts the operator's massive motions into the tiny actions of the robotic end effector. For instance, the Da Vinci System's EndoWrist end effector tool. These systems' drawbacks include the expensive cost of surgery, the lack of feedback, and the surgeon's operating mobility. The surgeon isn't inside the patient during these surgeries. Human tissue won't resist cutting. Thus, one can damage healthy tissues or break a thread by sewing too hard. A new system was developed in this study using ustepper (an industrial palletizer robot), EndoWrist needle and a CNC milling machine. Industrial robotics were merged with the medical robotics to bring more benefits. The developed surgical robot has more movement options for the surgeons to operate in the human body. Cambridge Medical Robot (CMR) and DLR Surgical Robot System's characteristics were studied and merged together into this design. Industrial and medical robotics have collaborated to create this particular design.
{"title":"Design of Industrial Robotic Arm For Surgical Applications","authors":"Hafzur Rahman Chowdhury, Sarowar Hossain, M. H. Imam","doi":"10.1109/ICREST57604.2023.10070037","DOIUrl":"https://doi.org/10.1109/ICREST57604.2023.10070037","url":null,"abstract":"Since robot-assisted surgical systems incorporate many of the advantages of minimally invasive surgery, such as decreased postoperative trauma, faster recoveries, and lower overall treatment costs, they are increasingly being used in medical procedures. Using these robotic systems, surgeons can work in areas where traditional surgical tools would be impractical, such as tiny; tight the capabilities of a human hand as an operator are typically somewhat restricted. The act of movement itself helps to improve this sort of dexterity. Robotic scaling, which converts the operator's massive motions into the tiny actions of the robotic end effector. For instance, the Da Vinci System's EndoWrist end effector tool. These systems' drawbacks include the expensive cost of surgery, the lack of feedback, and the surgeon's operating mobility. The surgeon isn't inside the patient during these surgeries. Human tissue won't resist cutting. Thus, one can damage healthy tissues or break a thread by sewing too hard. A new system was developed in this study using ustepper (an industrial palletizer robot), EndoWrist needle and a CNC milling machine. Industrial robotics were merged with the medical robotics to bring more benefits. The developed surgical robot has more movement options for the surgeons to operate in the human body. Cambridge Medical Robot (CMR) and DLR Surgical Robot System's characteristics were studied and merged together into this design. Industrial and medical robotics have collaborated to create this particular design.","PeriodicalId":389360,"journal":{"name":"2023 3rd International Conference on Robotics, Electrical and Signal Processing Techniques (ICREST)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128105175","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 : 2023-01-07DOI: 10.1109/ICREST57604.2023.10070042
Asaduzzaman Noor, Mahir Shahriar Ratul, Asif Ahmed, H. Hassain, Abir Ahmed
M2M refers to the use of sensors and intelligence to connect physical assets such as physical assets or consumer devices to the Internet and these things in turn will connect to the Internet through the Internet of Things (IoT) communications. Since the vision and model have existed, the number and types of connected things have grown, along with technologies for capturing, processing, and sharing data. This m2m technology was founded on mesh technology, and the communication protocol is MQTT (Message Queuing Telemetry Transport. It is a lightweight messaging protocol developed for constrained devices and networks with high latency, low capacity, or unstable networks. In this paper, it will be constructed with two solar-powered charging stations. There are twoseparate batteries for two charging stations. One is Main charging station and another is supportive charging station. If the voltage of one battery drops, another station will share the voltage from the battery it has. For whatever reason that fails, the battery will be charged from the national grid and supplied to the load. All the data, notification & information will be stored in a local server.
{"title":"An IoT Based Smart Grid: Peer-to-peer Energy Trading for Electric Vehicles Using M2M Communication Technology","authors":"Asaduzzaman Noor, Mahir Shahriar Ratul, Asif Ahmed, H. Hassain, Abir Ahmed","doi":"10.1109/ICREST57604.2023.10070042","DOIUrl":"https://doi.org/10.1109/ICREST57604.2023.10070042","url":null,"abstract":"M2M refers to the use of sensors and intelligence to connect physical assets such as physical assets or consumer devices to the Internet and these things in turn will connect to the Internet through the Internet of Things (IoT) communications. Since the vision and model have existed, the number and types of connected things have grown, along with technologies for capturing, processing, and sharing data. This m2m technology was founded on mesh technology, and the communication protocol is MQTT (Message Queuing Telemetry Transport. It is a lightweight messaging protocol developed for constrained devices and networks with high latency, low capacity, or unstable networks. In this paper, it will be constructed with two solar-powered charging stations. There are twoseparate batteries for two charging stations. One is Main charging station and another is supportive charging station. If the voltage of one battery drops, another station will share the voltage from the battery it has. For whatever reason that fails, the battery will be charged from the national grid and supplied to the load. All the data, notification & information will be stored in a local server.","PeriodicalId":389360,"journal":{"name":"2023 3rd International Conference on Robotics, Electrical and Signal Processing Techniques (ICREST)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127240419","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 : 2023-01-07DOI: 10.1109/ICREST57604.2023.10070051
K. Meah, Donald J. Hake, D. Babcock, E. Bosse, Blake Nelson
This paper presents a real-time implementation of an embedded sensor network for an automated radio telescope. The sensor network consists of accelerometers, digital motor temperature sensors, azimuth and elevation encoders, ambient temperature and humidity sensors, and an over the air wireless updating system for the microcontroller. A super loop software architecture was used to collect sensor data and update the control room operation. A custom PCB was designed for the sensor that houses the microcontroller, a wireless communication module, and peripheral circuit components. A laboratory test setup was built to collect sensor data and emulate the actual system operation. The test results validated the sensor network and system operation.
{"title":"Design and Implementation of Embedded Sensor Network for an Automated Radio Telescope","authors":"K. Meah, Donald J. Hake, D. Babcock, E. Bosse, Blake Nelson","doi":"10.1109/ICREST57604.2023.10070051","DOIUrl":"https://doi.org/10.1109/ICREST57604.2023.10070051","url":null,"abstract":"This paper presents a real-time implementation of an embedded sensor network for an automated radio telescope. The sensor network consists of accelerometers, digital motor temperature sensors, azimuth and elevation encoders, ambient temperature and humidity sensors, and an over the air wireless updating system for the microcontroller. A super loop software architecture was used to collect sensor data and update the control room operation. A custom PCB was designed for the sensor that houses the microcontroller, a wireless communication module, and peripheral circuit components. A laboratory test setup was built to collect sensor data and emulate the actual system operation. The test results validated the sensor network and system operation.","PeriodicalId":389360,"journal":{"name":"2023 3rd International Conference on Robotics, Electrical and Signal Processing Techniques (ICREST)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130497516","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 : 2023-01-07DOI: 10.1109/ICREST57604.2023.10070057
Md Hasanuzzaman Chowdhury Joy, Mowaz Mohammed Abdul Karim, Afif Hassan Choudhury, Md. Razin, Sadia Nowrin Mithila Ahmed
Recent advances have introduced IoT as one of the key technologies globally. As safety remains a critical issue for those who spend much time outside. Automated security systems are very useful where safety is an important issue. With a prospect of a Zero User Interface (UI) model this work represents a novel IoT based smart vault security system. The system is built and designed based on IoT combining with Arduino-Uno and Bluetooth module. This system involves LDR sensor, IR sensor and Sonar sensor for monitoring. The vault provides security on three levels. Password protected entry to connect with the smartphone using Bluetooth module, IR sensor array to use ‘secret gesture pattern’ to unlock the door, tracking number of transactions from the vault using Sonar sensor and LDR was used as a switch. To avoid the replication of physical unlocking of objects IR sensor array was used to introduce ‘secret gesture pattern’ unlocking system through touchless interfaces for the avoidance of transmissive diseases like COVID-19. This novel system has substantial possibility as a security vault system for industrial and residential use in a contactless manner.
{"title":"An IoT Based Smart Vault Security and Monitoring System with Zero UI","authors":"Md Hasanuzzaman Chowdhury Joy, Mowaz Mohammed Abdul Karim, Afif Hassan Choudhury, Md. Razin, Sadia Nowrin Mithila Ahmed","doi":"10.1109/ICREST57604.2023.10070057","DOIUrl":"https://doi.org/10.1109/ICREST57604.2023.10070057","url":null,"abstract":"Recent advances have introduced IoT as one of the key technologies globally. As safety remains a critical issue for those who spend much time outside. Automated security systems are very useful where safety is an important issue. With a prospect of a Zero User Interface (UI) model this work represents a novel IoT based smart vault security system. The system is built and designed based on IoT combining with Arduino-Uno and Bluetooth module. This system involves LDR sensor, IR sensor and Sonar sensor for monitoring. The vault provides security on three levels. Password protected entry to connect with the smartphone using Bluetooth module, IR sensor array to use ‘secret gesture pattern’ to unlock the door, tracking number of transactions from the vault using Sonar sensor and LDR was used as a switch. To avoid the replication of physical unlocking of objects IR sensor array was used to introduce ‘secret gesture pattern’ unlocking system through touchless interfaces for the avoidance of transmissive diseases like COVID-19. This novel system has substantial possibility as a security vault system for industrial and residential use in a contactless manner.","PeriodicalId":389360,"journal":{"name":"2023 3rd International Conference on Robotics, Electrical and Signal Processing Techniques (ICREST)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129269797","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 : 2023-01-07DOI: 10.1109/ICREST57604.2023.10070092
Md. Eftekhar Alam, M. A. Kader, Jubida Bahar Saba, Fahima Sultana, Sahrin Farid, M. Arefin
Ahstract—The inspiration for this project is to limit and curtail the difficulties and issues related to the Bus transport framework in any organization i.e schools, colleges, and universities. There is no denying the fact that the Transport Division of these organizations faces challenges in certain issues day to day related to transport, and our commitment is to limit the issues identified with it. The fundamental issues are optimization of the number of buses, identifying the entrance of unauthorized individuals, multiple reservations of the seat by one student, and lack of data to minimize the issues. It is a system where the user can maintain his bus reservation system with the process of biometrics which will be placed at the entrance of the bus. To stop multiple reservations in various buses by one individual a network between two or more buses are done by the wireless network so that if one student reserve a seat in one bus and also try to reserve a seat on another bus at a time the system will be shown that already he has reserved a seat in a bus. In this way, the authority can monitor how many seats are booked and how many seats are available. This system can facilitate any transport Division of any educational Institution to manage Transport facilities in a very cost effective and efficient way.
{"title":"IoT Based Seat Reservation System for University Bus with Wireless Network","authors":"Md. Eftekhar Alam, M. A. Kader, Jubida Bahar Saba, Fahima Sultana, Sahrin Farid, M. Arefin","doi":"10.1109/ICREST57604.2023.10070092","DOIUrl":"https://doi.org/10.1109/ICREST57604.2023.10070092","url":null,"abstract":"Ahstract—The inspiration for this project is to limit and curtail the difficulties and issues related to the Bus transport framework in any organization i.e schools, colleges, and universities. There is no denying the fact that the Transport Division of these organizations faces challenges in certain issues day to day related to transport, and our commitment is to limit the issues identified with it. The fundamental issues are optimization of the number of buses, identifying the entrance of unauthorized individuals, multiple reservations of the seat by one student, and lack of data to minimize the issues. It is a system where the user can maintain his bus reservation system with the process of biometrics which will be placed at the entrance of the bus. To stop multiple reservations in various buses by one individual a network between two or more buses are done by the wireless network so that if one student reserve a seat in one bus and also try to reserve a seat on another bus at a time the system will be shown that already he has reserved a seat in a bus. In this way, the authority can monitor how many seats are booked and how many seats are available. This system can facilitate any transport Division of any educational Institution to manage Transport facilities in a very cost effective and efficient way.","PeriodicalId":389360,"journal":{"name":"2023 3rd International Conference on Robotics, Electrical and Signal Processing Techniques (ICREST)","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129078679","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 : 2023-01-07DOI: 10.1109/ICREST57604.2023.10070094
Upal Barua Joy, Mohammed Moin Uddin, Nayeem Uddin Ahmed Khan, Md. Hassannul Banna, Shahadat Hossain Tushar, K. M. Kabir
Microbial Fuel Cell (MFC) uses bio-electrochemical process to generate electricity. It is considered as a new approach in renewable energy generation. However, due to low output voltage and current, supplying power to loads from MFC is quite challenging. Research so far done on MFC mainly focused on material analysis, creating new designs, bacterial activity in MFC and so on. But very few attempts have been done on delivering power to loads from MFC. In this research, using waste water as input, three Double chamber MFCs and two single chamber membrane-less MFCs have been constructed using Aluminum as anode and Copper as cathode. Constructed MFCs were connected in series which generated maximum 2.6 V. The MFC combination could light up a small Light Emitting Diode (LED).
{"title":"Wastewater Microbial Fuel Cell Stack with the Ability of Driving Low Power Electronic Load","authors":"Upal Barua Joy, Mohammed Moin Uddin, Nayeem Uddin Ahmed Khan, Md. Hassannul Banna, Shahadat Hossain Tushar, K. M. Kabir","doi":"10.1109/ICREST57604.2023.10070094","DOIUrl":"https://doi.org/10.1109/ICREST57604.2023.10070094","url":null,"abstract":"Microbial Fuel Cell (MFC) uses bio-electrochemical process to generate electricity. It is considered as a new approach in renewable energy generation. However, due to low output voltage and current, supplying power to loads from MFC is quite challenging. Research so far done on MFC mainly focused on material analysis, creating new designs, bacterial activity in MFC and so on. But very few attempts have been done on delivering power to loads from MFC. In this research, using waste water as input, three Double chamber MFCs and two single chamber membrane-less MFCs have been constructed using Aluminum as anode and Copper as cathode. Constructed MFCs were connected in series which generated maximum 2.6 V. The MFC combination could light up a small Light Emitting Diode (LED).","PeriodicalId":389360,"journal":{"name":"2023 3rd International Conference on Robotics, Electrical and Signal Processing Techniques (ICREST)","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132654682","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 : 2023-01-07DOI: 10.1109/ICREST57604.2023.10070033
S. Kabir, A. Shufian, Md. Saniat Rahman Zishan
The decrease in fossil fuel reserves has prompted a global move toward distributed energy resources. For this reason, solar PV power generation has recently gained much attention as a feasible renewable energy source. However, large-scale generation is challenging if there are anomalies in individual solar PV panels. This will reduce the efficiency of the PV system and create a potential fire hazard. In this perspective, the anomaly detection technique discloses system anomalies accurately and effectively. Identified anomalies will localize the event for an improved generation. This paper addresses the performance analysis of using the isolation forest technique to identify anomalies in the PV system and the rule-based fault localization technique to identify defective panel events. In the developed model, the isolation forest technique found around 453 anomalies in 45,740 observations, and approximately six panels indicated a fault in the system. The accuracy score is found to be approximately 0.9886. The proposed fault detection method will help detect the faults in solar power systems.
{"title":"Isolation Forest Based Anomaly Detection and Fault Localization for Solar PV System","authors":"S. Kabir, A. Shufian, Md. Saniat Rahman Zishan","doi":"10.1109/ICREST57604.2023.10070033","DOIUrl":"https://doi.org/10.1109/ICREST57604.2023.10070033","url":null,"abstract":"The decrease in fossil fuel reserves has prompted a global move toward distributed energy resources. For this reason, solar PV power generation has recently gained much attention as a feasible renewable energy source. However, large-scale generation is challenging if there are anomalies in individual solar PV panels. This will reduce the efficiency of the PV system and create a potential fire hazard. In this perspective, the anomaly detection technique discloses system anomalies accurately and effectively. Identified anomalies will localize the event for an improved generation. This paper addresses the performance analysis of using the isolation forest technique to identify anomalies in the PV system and the rule-based fault localization technique to identify defective panel events. In the developed model, the isolation forest technique found around 453 anomalies in 45,740 observations, and approximately six panels indicated a fault in the system. The accuracy score is found to be approximately 0.9886. The proposed fault detection method will help detect the faults in solar power systems.","PeriodicalId":389360,"journal":{"name":"2023 3rd International Conference on Robotics, Electrical and Signal Processing Techniques (ICREST)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133170674","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 : 2023-01-07DOI: 10.1109/ICREST57604.2023.10070077
Md. Al-Amin Islam, Md. Abdullah Zubair
In the present study, environmental-friendly lead-free $($ (Na0.5Bi0.5)0.45Ba0.40Sr0.15TiO3(NB-BST) ceramics were prepared by conventional solid-state reaction route. The structural and electrical properties of the ceramics were investigated for 950°C, 1000°C, and 1050°C sintering temperatures. Grain size was found to be ~0.267-0.447 µm. The structural analysis revealed cubic symmetry with a pm-3m space group. P-E loop shape of NB-BST ceramic was found to be strongly dependent on sintering temperature
{"title":"Lead-free (Na0.5Bi0.5)0.45Ba0.40Sr0.15TiO3ceramic: Synthesis, structure and polarization response","authors":"Md. Al-Amin Islam, Md. Abdullah Zubair","doi":"10.1109/ICREST57604.2023.10070077","DOIUrl":"https://doi.org/10.1109/ICREST57604.2023.10070077","url":null,"abstract":"In the present study, environmental-friendly lead-free <tex>$($</tex> (Na<inf>0.5</inf>Bi<inf>0.5</inf>)<inf>0.45</inf>Ba<inf>0.40</inf>Sr<inf>0.15</inf>TiO<inf>3</inf>(NB-BST) ceramics were prepared by conventional solid-state reaction route. The structural and electrical properties of the ceramics were investigated for 950°C, 1000°C, and 1050°C sintering temperatures. Grain size was found to be ~0.267-0.447 µm. The structural analysis revealed cubic symmetry with a pm-3m space group. P-E loop shape of NB-BST ceramic was found to be strongly dependent on sintering temperature","PeriodicalId":389360,"journal":{"name":"2023 3rd International Conference on Robotics, Electrical and Signal Processing Techniques (ICREST)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117246316","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 : 2023-01-07DOI: 10.1109/ICREST57604.2023.10070060
Ruham Rofique, Md. Yasin Arafat Alif, Suprio Saha Himu, Fahmida Zahin Naima, C. A. Hossain
Health safety is always one of the key concerns for human lives. During this current pandemic, people have become more aware of this fact and have started following different precautions. In this paper, we have discussed a prototype of a cost-efficient and environmentally friendly disinfection chamber that can help to solve the public health risk that was brought to our attention. Currently, power generation costs have also increased due to inflation and fuel price hikes. There is a lack of power supply for that. To ensure the proper demand for power, the whole world focused on renewable energy. While developing the prototype, we tried to use the widely available resources in our local market so that it reduces the cost as well as can be easily repairable and upgradeable. Although we have used solar panels in the system, due to the portability and availability of power, we have also used a battery system which can supply power to the chamber for over 8 hours. We also discussed a few future works on the proposed system, with a focus on solar system improvement.
{"title":"Design and Implementation of a Low-cost Solar Charged Portable Disinfectant Chamber","authors":"Ruham Rofique, Md. Yasin Arafat Alif, Suprio Saha Himu, Fahmida Zahin Naima, C. A. Hossain","doi":"10.1109/ICREST57604.2023.10070060","DOIUrl":"https://doi.org/10.1109/ICREST57604.2023.10070060","url":null,"abstract":"Health safety is always one of the key concerns for human lives. During this current pandemic, people have become more aware of this fact and have started following different precautions. In this paper, we have discussed a prototype of a cost-efficient and environmentally friendly disinfection chamber that can help to solve the public health risk that was brought to our attention. Currently, power generation costs have also increased due to inflation and fuel price hikes. There is a lack of power supply for that. To ensure the proper demand for power, the whole world focused on renewable energy. While developing the prototype, we tried to use the widely available resources in our local market so that it reduces the cost as well as can be easily repairable and upgradeable. Although we have used solar panels in the system, due to the portability and availability of power, we have also used a battery system which can supply power to the chamber for over 8 hours. We also discussed a few future works on the proposed system, with a focus on solar system improvement.","PeriodicalId":389360,"journal":{"name":"2023 3rd International Conference on Robotics, Electrical and Signal Processing Techniques (ICREST)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114199217","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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