Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168521
Ratnasari Nur Rohmah, Nurokhim
There are many software-based tools that can be used to evaluate the radio-ecological impacts. Plume Gaussian is a simple dispersion model, easy to be implemented and developed further. This paper describes the application of Plume Gaussian model to simulate the dispersion of I-131 released around the Serpong Nuclear Area (Kawasan Nuklir Serpong, KNS). The software development consists: mathematical model derivation and software implementation. The designed model was tested using the real data from six monitoring location of I-131 released from exhaust stack of PT. INUKI in KNS. Plume Gaussian model shown good opportunity to be used for evaluation of radiation impact to the environment. It also shown that the more complete of meteorological data the more accurate the modeling result. Using meteorological data 2012–2013 simulation shown that radioisotope pollutants of PT. INUKI tend to lead between the north and northwest from the stack.
{"title":"Simulation of I-131 Dispersion around KNS (Kawasan Nuklir Serpong) using Gaussian Plume Model","authors":"Ratnasari Nur Rohmah, Nurokhim","doi":"10.1109/QIR.2017.8168521","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168521","url":null,"abstract":"There are many software-based tools that can be used to evaluate the radio-ecological impacts. Plume Gaussian is a simple dispersion model, easy to be implemented and developed further. This paper describes the application of Plume Gaussian model to simulate the dispersion of I-131 released around the Serpong Nuclear Area (Kawasan Nuklir Serpong, KNS). The software development consists: mathematical model derivation and software implementation. The designed model was tested using the real data from six monitoring location of I-131 released from exhaust stack of PT. INUKI in KNS. Plume Gaussian model shown good opportunity to be used for evaluation of radiation impact to the environment. It also shown that the more complete of meteorological data the more accurate the modeling result. Using meteorological data 2012–2013 simulation shown that radioisotope pollutants of PT. INUKI tend to lead between the north and northwest from the stack.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123966461","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 : 2017-07-01DOI: 10.1109/QIR.2017.8168530
Abdul Hafid Paronda, M. Asvial
The number of subscribers and cellular traffic demand had grown dramatically, which is an urgent challenge face on the cellular network and system performance. Due to the problem, power allocation was exploited by many researchers in order to improve the system performance, e.g. implementation of fractional power control (FPC) as the power constraint in single carrier — frequency division multiple access (SC-FDMA) in term of uplink resource allocation algorithm and fractional power coefficient as the uplink control in heterogeneous small cell networks. Both of them could enhance any system performance i.e. spectral efficiency, transmission rate and energy efficiency. Even though any tradeoff would be the handicap in order to maintain the system's quality of service (QoS), such as the lower fairness index at the first one, worse outage probability and also significant interference at the second. In this paper, a dynamic uplink power control algorithm is proposed to solve the problem, especially to manage that tradeoff within user's velocity-based scenario (UVS). Beside to enhance the system performance improvement, the implementation of the proposed algorithm is also addressed as the way to investigate the 5G wireless technology, especially in a femtocell network. Numerical results as shown by this proposed indicate the obtained enhancement of the system i.e. improvement of the energy efficiency by 10%–99%.
{"title":"User's velocity-based uplink power control in 5G femtocell networks","authors":"Abdul Hafid Paronda, M. Asvial","doi":"10.1109/QIR.2017.8168530","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168530","url":null,"abstract":"The number of subscribers and cellular traffic demand had grown dramatically, which is an urgent challenge face on the cellular network and system performance. Due to the problem, power allocation was exploited by many researchers in order to improve the system performance, e.g. implementation of fractional power control (FPC) as the power constraint in single carrier — frequency division multiple access (SC-FDMA) in term of uplink resource allocation algorithm and fractional power coefficient as the uplink control in heterogeneous small cell networks. Both of them could enhance any system performance i.e. spectral efficiency, transmission rate and energy efficiency. Even though any tradeoff would be the handicap in order to maintain the system's quality of service (QoS), such as the lower fairness index at the first one, worse outage probability and also significant interference at the second. In this paper, a dynamic uplink power control algorithm is proposed to solve the problem, especially to manage that tradeoff within user's velocity-based scenario (UVS). Beside to enhance the system performance improvement, the implementation of the proposed algorithm is also addressed as the way to investigate the 5G wireless technology, especially in a femtocell network. Numerical results as shown by this proposed indicate the obtained enhancement of the system i.e. improvement of the energy efficiency by 10%–99%.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128165003","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 : 2017-07-01DOI: 10.1109/QIR.2017.8168520
Herlina, R. Setiabudy, A. Rahardjo
Cogging torque and permanent magnet electric machines are difficult to separate. This torque always remains overdue to the interaction between the magnetic field caused by the permanent magnet against the stator slot. The method proposed for reducing cogging torque in this study is the Half cylinder anti-notch design and sequence with the cutting-edge design. It further considers the implement of changes the slot width of the stator and the change of distance between the permanent magnets. The models reproduced employing 2-D FEMM 4.2 version. It is noticed that the cogging torque will be considerably cut down if the width of the slot opening of the stator is equal to the anti-notch width. Decreasing the distance between the permanent magnets can further cut down the cogging torque and the cogging torque ripple is flatter than the reference model. Both models will reduce the surface space of the air gap. Moreover, the proposed models can be employed to reduce the cogging torque, causes the rotation of the rotor more effortlessly and can lessen the friction on PMSG.
{"title":"Influence of permanent magnet and width of stator slot to cogging torque reduction in PMSG using anti-notch and cutting edge method","authors":"Herlina, R. Setiabudy, A. Rahardjo","doi":"10.1109/QIR.2017.8168520","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168520","url":null,"abstract":"Cogging torque and permanent magnet electric machines are difficult to separate. This torque always remains overdue to the interaction between the magnetic field caused by the permanent magnet against the stator slot. The method proposed for reducing cogging torque in this study is the Half cylinder anti-notch design and sequence with the cutting-edge design. It further considers the implement of changes the slot width of the stator and the change of distance between the permanent magnets. The models reproduced employing 2-D FEMM 4.2 version. It is noticed that the cogging torque will be considerably cut down if the width of the slot opening of the stator is equal to the anti-notch width. Decreasing the distance between the permanent magnets can further cut down the cogging torque and the cogging torque ripple is flatter than the reference model. Both models will reduce the surface space of the air gap. Moreover, the proposed models can be employed to reduce the cogging torque, causes the rotation of the rotor more effortlessly and can lessen the friction on PMSG.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128587533","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 : 2017-07-01DOI: 10.1109/QIR.2017.8168477
Hendrana Tjahjadi, K. Ramli
Blood pressure is an important parameter for early detections of cardiovascular diseases. There have been many relevant technological advances to measure blood pressure, such as in wearable sensing, pervasive computing, and smartphones. The disadvantage of conventional measurement is discomfort for the patients because of painful cuff inflation. The emergence of photoplethysmography for blood pressure estimation is offering a more convenient method. Photoplethysmography can generally be grouped into the following three categories; pulse wave velocity, pulse transit time, and pulse wave analysis. The objective of this review is to study the achievement of photoplethysmography based non-invasive continuous blood pressure methods. The method is quite promising and useful for the future studies and enhancement on cuff-less continuous BP monitoring approach.
{"title":"Review of photoplethysmography based non-invasive continuous blood pressure methods","authors":"Hendrana Tjahjadi, K. Ramli","doi":"10.1109/QIR.2017.8168477","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168477","url":null,"abstract":"Blood pressure is an important parameter for early detections of cardiovascular diseases. There have been many relevant technological advances to measure blood pressure, such as in wearable sensing, pervasive computing, and smartphones. The disadvantage of conventional measurement is discomfort for the patients because of painful cuff inflation. The emergence of photoplethysmography for blood pressure estimation is offering a more convenient method. Photoplethysmography can generally be grouped into the following three categories; pulse wave velocity, pulse transit time, and pulse wave analysis. The objective of this review is to study the achievement of photoplethysmography based non-invasive continuous blood pressure methods. The method is quite promising and useful for the future studies and enhancement on cuff-less continuous BP monitoring approach.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"623 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122572479","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 : 2017-07-01DOI: 10.1109/QIR.2017.8168470
Ernia Susana, Hendrana Tjahjadi
Self-monitoring enables patients to become more active participants in their health care, home pulse oximetry can provide objective data for determining health status and the possible need for medical consultation or interventions. Pulse oximetry is a non-invasive and continuous method for monitoring the blood oxygen saturation level. Pulse oximetry has gained acceptance in the medical community caused low costs and easy to operation. Prototype pulse oximeter in previous research still use system based on microcontroller. Microcontroller system is ideal for building robotic systems but microcontroller system has a weakness in terms of processing the signal. During the last decade, development of single board computer has provided smaller, faster and more affordable. The aim of this study to develop a prototype handheld oxygen saturation based on single-board computer Raspberry Pi for home care. The added value of this research is using the single board computer system and the graphical user interfaces were designed to become more informative. This study uses experimental research with a quantitative approach. The results of this study successfully developed a prototype pulse oximeter equipped by LCD touch screen that can display the value of oxygen saturation (SpO2), pulse rate (PR) and photoplethysmography (PPG). The reliability of oxygen saturation and heart rate were quite stable from ±1% to ±2% compare gold standard, with standard deviation range of 0.577 to 1.
{"title":"Handheld pulse oximeter based on single board computer raspberry Pi B +","authors":"Ernia Susana, Hendrana Tjahjadi","doi":"10.1109/QIR.2017.8168470","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168470","url":null,"abstract":"Self-monitoring enables patients to become more active participants in their health care, home pulse oximetry can provide objective data for determining health status and the possible need for medical consultation or interventions. Pulse oximetry is a non-invasive and continuous method for monitoring the blood oxygen saturation level. Pulse oximetry has gained acceptance in the medical community caused low costs and easy to operation. Prototype pulse oximeter in previous research still use system based on microcontroller. Microcontroller system is ideal for building robotic systems but microcontroller system has a weakness in terms of processing the signal. During the last decade, development of single board computer has provided smaller, faster and more affordable. The aim of this study to develop a prototype handheld oxygen saturation based on single-board computer Raspberry Pi for home care. The added value of this research is using the single board computer system and the graphical user interfaces were designed to become more informative. This study uses experimental research with a quantitative approach. The results of this study successfully developed a prototype pulse oximeter equipped by LCD touch screen that can display the value of oxygen saturation (SpO2), pulse rate (PR) and photoplethysmography (PPG). The reliability of oxygen saturation and heart rate were quite stable from ±1% to ±2% compare gold standard, with standard deviation range of 0.577 to 1.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122713866","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 : 2017-07-01DOI: 10.1109/QIR.2017.8168512
Y. Natali, P. Priambodo, E. Rahardjo
WDM PON (Wavelength Division Multiplexing Passive Optical Network) is used to increase DAS (Distributed Antenna System) network efficiency applied in existing PON network. The Optical DAS is the best solution for power efficiency in the building. Both DAS and PON use WDM to combine the different optical wavelengths. The simulation network configuration locates the WDM de-multiplexer placed at a distance 18 km from the multiplexer. After 18 km, the optical network is divided into two networks, which are DAS and PON. This paper proposes to use 2×1 WDM PON type for DAS. The experimental DAS and PON configuration system is simulated using Optisystem software. The results of Optisystem simulation shows that photodetector output is −34.071 dBm for DAS. LiNbO3 EOM (Electro Optic Modulator) gives a 4 dB power efficiency in DAS network. While the power input of ONU (Optical Network Unit) in PON network is −21.5 dBm. OSNR (Optical Signal to Noise Ratio) of WDM multiplexer were 69.421 dB for PON and 75.922 dB for DAS. The results comply with the standard of ITU-T G.984.2 for GPON (Gigabit PON) System.
{"title":"Study on electro optic modulator based on distributed antenna system over wavelength division multiplexing passive optical network system","authors":"Y. Natali, P. Priambodo, E. Rahardjo","doi":"10.1109/QIR.2017.8168512","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168512","url":null,"abstract":"WDM PON (Wavelength Division Multiplexing Passive Optical Network) is used to increase DAS (Distributed Antenna System) network efficiency applied in existing PON network. The Optical DAS is the best solution for power efficiency in the building. Both DAS and PON use WDM to combine the different optical wavelengths. The simulation network configuration locates the WDM de-multiplexer placed at a distance 18 km from the multiplexer. After 18 km, the optical network is divided into two networks, which are DAS and PON. This paper proposes to use 2×1 WDM PON type for DAS. The experimental DAS and PON configuration system is simulated using Optisystem software. The results of Optisystem simulation shows that photodetector output is −34.071 dBm for DAS. LiNbO3 EOM (Electro Optic Modulator) gives a 4 dB power efficiency in DAS network. While the power input of ONU (Optical Network Unit) in PON network is −21.5 dBm. OSNR (Optical Signal to Noise Ratio) of WDM multiplexer were 69.421 dB for PON and 75.922 dB for DAS. The results comply with the standard of ITU-T G.984.2 for GPON (Gigabit PON) System.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115603886","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 : 2017-07-01DOI: 10.1109/QIR.2017.8168469
Syam Erast Prayoga, R. W. Purnamaningsih, T. Abuzairi, N. R. Poespawati
Solar cells have been through many development phases. Silicon is a one of many important materials in solar cell manufacturing. One of silicon solar cell applications which can produce high efficiency is Heterojunction with Intrinsic Thin-layer (HIT) crystalline silicon solar cell. Another alternative of silicon solar cell applications is Heterojunction with Compound Thin-layer (HCT) crystalline silicon solar cell where silicon is coupled with III-V compound semiconductor. n-AlGaAs is used as an alternative from n-AlAs on Heterojunction with Compound Thin-layer crystalline silicon solar cell. Compared to AlAs, lattice constant of AlGaAs is more suitable to the silicon. To increase the efficiency of solar cell the step grading method is used for AlxGa1−xAs layer on the front surface. The optimization of step grading AlxGa1−xAs layer was done by using the wxAMPS software as simulation tool. Simulation results show that HCT crystalline silicon solar cell produce the 16.64 mA/cm2 short circuit current density (Jsc), the 1.05 V open circuit voltage (Voc), the 0.95 fill factor, and the 16.64% efficiency. The power it produces can be used as power source for HGM-111 biosensors.
{"title":"Crystalline silicon solar cell design with AlxGa1−xAs as heterojunction with compound thin layer for biosensor application","authors":"Syam Erast Prayoga, R. W. Purnamaningsih, T. Abuzairi, N. R. Poespawati","doi":"10.1109/QIR.2017.8168469","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168469","url":null,"abstract":"Solar cells have been through many development phases. Silicon is a one of many important materials in solar cell manufacturing. One of silicon solar cell applications which can produce high efficiency is Heterojunction with Intrinsic Thin-layer (HIT) crystalline silicon solar cell. Another alternative of silicon solar cell applications is Heterojunction with Compound Thin-layer (HCT) crystalline silicon solar cell where silicon is coupled with III-V compound semiconductor. n-AlGaAs is used as an alternative from n-AlAs on Heterojunction with Compound Thin-layer crystalline silicon solar cell. Compared to AlAs, lattice constant of AlGaAs is more suitable to the silicon. To increase the efficiency of solar cell the step grading method is used for AlxGa1−xAs layer on the front surface. The optimization of step grading AlxGa1−xAs layer was done by using the wxAMPS software as simulation tool. Simulation results show that HCT crystalline silicon solar cell produce the 16.64 mA/cm2 short circuit current density (Jsc), the 1.05 V open circuit voltage (Voc), the 0.95 fill factor, and the 16.64% efficiency. The power it produces can be used as power source for HGM-111 biosensors.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"278 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114481815","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 : 2017-07-01DOI: 10.1109/QIR.2017.8168503
M. Rif'an, F. Yusivar, B. Kusumoputro
The Brushless DC (BLDC) motors are widely used for many industrial applications because of their high efficiency, high torque and low volume. However, the BLDC motor is a multi-variable and non-linear system, so it is difficult to get a satisfying result for BLDC motor using the conventional linear control method like normal PID controller. This paper presents the development and performance analysis of adaptive PID controller Based on Additional Error of an Inversed-Control Signal for Brushless DC motor drives. The adaptive PID controller Based on Additional Error of an Inversed-Control Signal have a parameter adjustment mechanism, better solutions when there are variations in process parameters, learning capabilities and fault tolerance. This paper implements adaptive PID controller Based on Additional Error of an Inversed-Control Signal to solve the problems of non-linearity, parameter variations and load excursions that occur in BLDC motor drive systems. The performance of the traditional PID controller based speed control method is compared with the model reference based speed control for BLDC motor drive system using MATLAB software. Experimental results is presented to prove that the adaptive PID controller Based on Additional Error of an Inversed-Control Signal is capable of speed tracking as well as reduce the effect of parameter variations.
{"title":"Adaptive PID controller based on additional error of an inversed-control signal for improved performance of brushless DC motor","authors":"M. Rif'an, F. Yusivar, B. Kusumoputro","doi":"10.1109/QIR.2017.8168503","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168503","url":null,"abstract":"The Brushless DC (BLDC) motors are widely used for many industrial applications because of their high efficiency, high torque and low volume. However, the BLDC motor is a multi-variable and non-linear system, so it is difficult to get a satisfying result for BLDC motor using the conventional linear control method like normal PID controller. This paper presents the development and performance analysis of adaptive PID controller Based on Additional Error of an Inversed-Control Signal for Brushless DC motor drives. The adaptive PID controller Based on Additional Error of an Inversed-Control Signal have a parameter adjustment mechanism, better solutions when there are variations in process parameters, learning capabilities and fault tolerance. This paper implements adaptive PID controller Based on Additional Error of an Inversed-Control Signal to solve the problems of non-linearity, parameter variations and load excursions that occur in BLDC motor drive systems. The performance of the traditional PID controller based speed control method is compared with the model reference based speed control for BLDC motor drive system using MATLAB software. Experimental results is presented to prove that the adaptive PID controller Based on Additional Error of an Inversed-Control Signal is capable of speed tracking as well as reduce the effect of parameter variations.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123297098","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 : 2017-07-01DOI: 10.1109/QIR.2017.8168536
Jeong-Hoon Seol, S. Hahm
The drain current of the Schottky barrier (SB) MOSFET is modeled mathematically by considering both thermionic emissions and Schottky barrier tunneling from the source to the channel. The drain current is dependent on the Schottky barrier height, but is barely affected by the doping concentration. For the depletion type gallium nitride SB MOSFET with both an ITO source and drain electrodes, the threshold voltage is calculated to be 3.5 V, which is similar to the measured value of 3.75 V, and the calculated drain current is 1.2 times higher than the measured value.
{"title":"Drain current modeling of gallium nitride schottky barrier MOSFETs","authors":"Jeong-Hoon Seol, S. Hahm","doi":"10.1109/QIR.2017.8168536","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168536","url":null,"abstract":"The drain current of the Schottky barrier (SB) MOSFET is modeled mathematically by considering both thermionic emissions and Schottky barrier tunneling from the source to the channel. The drain current is dependent on the Schottky barrier height, but is barely affected by the doping concentration. For the depletion type gallium nitride SB MOSFET with both an ITO source and drain electrodes, the threshold voltage is calculated to be 3.5 V, which is similar to the measured value of 3.75 V, and the calculated drain current is 1.2 times higher than the measured value.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128862833","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 : 2017-07-01DOI: 10.1109/QIR.2017.8168495
H. Fitriawan, M. Susanto, A. Arifin, Danny Mausa, A. Trisanto
To achieve a reliable and robust system for environmental monitoring, there is an available technology that can be used to resolve this problem and moreover provide for better living. Wireless sensor networks (WSN) have been successfully applied in many environmental monitoring. An ad-hoc wireless sensor network consists of a number of small and self-power sensing devices (nodes) connected using effective wireless networks. Compared to wired networks, there are several challenges that must be addressed in wireless networks. These challenges are limitation in communication bandwidth and energy constraint in sensor node, therefore it is important to know their reliability and performance. This paper reports the development and performance analysis of an embedded wireless sensor network for temperature and humidity monitoring in the environment. The network itself consists of a coordinator or data gateway which wirelessly collect temperature and humidity data from several sensor nodes that are responsible to provide those data. Each sensor node is developed from an Arduino based microcontroller, Xbee wireless module based on ZigBee/IEEE 802.15.4 standards, and temperature and humidity sensor devices. The network quality of service (QoS) is investigated in terms of delay, throughput and packet loss as a function of sensor node distance and transmitted packet size over line of sight (LOS) and non-line of sight (NLOS) conditions. The throughput and packet delay are also measured as a function of the baud rate in point to point link. This experiment is performed to have an insight how the baud rate affects the latency of the communication over the ZigBee protocol. Next, we also considered the multi-hop scenario with the presence of router for relaying packets from the sensor node to the coordinator. The performance of multi-hop configuration is compared to that of direct transmission. Based on our analysis, it is concluded that the ZigBee based WSN is more suitable for low data rate applications.
{"title":"ZigBee based wireless sensor networks and performance analysis in various environments","authors":"H. Fitriawan, M. Susanto, A. Arifin, Danny Mausa, A. Trisanto","doi":"10.1109/QIR.2017.8168495","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168495","url":null,"abstract":"To achieve a reliable and robust system for environmental monitoring, there is an available technology that can be used to resolve this problem and moreover provide for better living. Wireless sensor networks (WSN) have been successfully applied in many environmental monitoring. An ad-hoc wireless sensor network consists of a number of small and self-power sensing devices (nodes) connected using effective wireless networks. Compared to wired networks, there are several challenges that must be addressed in wireless networks. These challenges are limitation in communication bandwidth and energy constraint in sensor node, therefore it is important to know their reliability and performance. This paper reports the development and performance analysis of an embedded wireless sensor network for temperature and humidity monitoring in the environment. The network itself consists of a coordinator or data gateway which wirelessly collect temperature and humidity data from several sensor nodes that are responsible to provide those data. Each sensor node is developed from an Arduino based microcontroller, Xbee wireless module based on ZigBee/IEEE 802.15.4 standards, and temperature and humidity sensor devices. The network quality of service (QoS) is investigated in terms of delay, throughput and packet loss as a function of sensor node distance and transmitted packet size over line of sight (LOS) and non-line of sight (NLOS) conditions. The throughput and packet delay are also measured as a function of the baud rate in point to point link. This experiment is performed to have an insight how the baud rate affects the latency of the communication over the ZigBee protocol. Next, we also considered the multi-hop scenario with the presence of router for relaying packets from the sensor node to the coordinator. The performance of multi-hop configuration is compared to that of direct transmission. Based on our analysis, it is concluded that the ZigBee based WSN is more suitable for low data rate applications.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"31 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120910988","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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