Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168466
H. Inokawa, H. Satoh, K. Akiba
A method of measuring the thermal conductance and the heat capacity of a nanowire is presented. The nanowire is suspended in vacuum to ensure the thermal isolation, and the resistance is measured with respect to the square of the current to obtain the thermal conductance in the length direction. The heat capacity is evaluated by the frequency response of the 3f component of the voltage across the nanowire when it is driven by the AC current at f. This method is successfully applied to characterize a silicon nanowire by using a platinum wire resistor.
{"title":"Thermal conductance and heat capacity measurement utilizing suspended-wire resistor","authors":"H. Inokawa, H. Satoh, K. Akiba","doi":"10.1109/QIR.2017.8168466","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168466","url":null,"abstract":"A method of measuring the thermal conductance and the heat capacity of a nanowire is presented. The nanowire is suspended in vacuum to ensure the thermal isolation, and the resistance is measured with respect to the square of the current to obtain the thermal conductance in the length direction. The heat capacity is evaluated by the frequency response of the 3f component of the voltage across the nanowire when it is driven by the AC current at f. This method is successfully applied to characterize a silicon nanowire by using a platinum wire resistor.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"336 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":"127577692","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.2017.8168521
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.2017.8168460
K. Priandana, B. Kusumoputro, E. Rahardjo
This paper discusses about the design of a specific radar antenna at ISM frequency band. The overall radar system will be utilized as a trajectory generator for a developed autonomous chaser boat prototype in which the radar antenna was designed to meet this requirement. Fresnel Zone free-space calculation revealed that the radar antenna should be placed at the lake side with a minimum height of 2.5 m. By considering the possible size and distance of the tracked boat, the required radar antenna vertical beamwidth for sufficient elevation coverage is at least 26°. Further design process in relation to desired azimuth tracking resolution revealed that the required horizontal beamwidth is less than 15°. A 4×8 microstrip array antenna was designed by simulations to meet these requirements. The simulation results revealed that the 3dB horizontal beamwidth was 12.2° and the 3dB vertical beamwidth was 160°. Two 4×8 microstrip array antennas were fabricated by utilizing the simulated design, one as transmitting antenna and the other as receiving antenna. Then, the overall performances were justified by experimental antenna measurements. The simulation and measurement results showed that the designed radar antenna can operate at ISM band with sufficient 3dB horizontal beamwidth of less than 15°.
{"title":"The design of ISM-band radar antenna for small boat's trajectory tracking","authors":"K. Priandana, B. Kusumoputro, E. Rahardjo","doi":"10.1109/QIR.2017.8168460","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168460","url":null,"abstract":"This paper discusses about the design of a specific radar antenna at ISM frequency band. The overall radar system will be utilized as a trajectory generator for a developed autonomous chaser boat prototype in which the radar antenna was designed to meet this requirement. Fresnel Zone free-space calculation revealed that the radar antenna should be placed at the lake side with a minimum height of 2.5 m. By considering the possible size and distance of the tracked boat, the required radar antenna vertical beamwidth for sufficient elevation coverage is at least 26°. Further design process in relation to desired azimuth tracking resolution revealed that the required horizontal beamwidth is less than 15°. A 4×8 microstrip array antenna was designed by simulations to meet these requirements. The simulation results revealed that the 3dB horizontal beamwidth was 12.2° and the 3dB vertical beamwidth was 160°. Two 4×8 microstrip array antennas were fabricated by utilizing the simulated design, one as transmitting antenna and the other as receiving antenna. Then, the overall performances were justified by experimental antenna measurements. The simulation and measurement results showed that the designed radar antenna can operate at ISM band with sufficient 3dB horizontal beamwidth of less than 15°.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"93 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":"129079718","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.2017.8168513
C. Apriono, Nofrizal, Mochamad Dandy Firmansyah, F. Zulkifli, E. Rahardjo
Radiation characteristics of an antenna should be tested through a precise measurement procedure. To provide an actual parameter of an antenna radiation, measurement must be performed in the far-field region and its distance is proportional to the antenna's dimension. Therefore, in a limited space of an anechoic chamber facility, antenna measurement has a constraint to a maximum dimension of the antenna under test. Near-field measurement method has been an alternative to overcome this problem. However, additional techniques, such as sampling, scanning mechanism, transformation computation, cannot be avoided to obtain the actual antenna radiation parameters. In this research, we study cylindrical scanning technique to obtain sampling data because it is simpler than the spherical scanning in mechanical setup and can produce radiation pattern results in completely two dimension polar diagrams. Our purpose is to provide low cost and reasonable performance of a near-field measurement system. Two dimension Fast-Fourier Transform is used to process and analyze the near-field data into the far-field data. Other methods, i.e. one dimensional Fast-Fourier transform and numerical method, are also performed to compare the accuracy and efficiency of the proposed method. Near-field data generated from experiment data measured of 8-array micro-strip antenna at resonant frequency 3.35 GHz. Transformation results show that average deviations of one dimension Fast-Fourier Transform, two dimension Fast-Fourier Transform and the numerical method are 6.83 dB, 3.04 dB, and 3.77 dB, respectively. These results show the minimum discrepancies between the transform and the expected far-field obtained by using the two dimensions Fast-Fourier Transform. This method has shown near-field measurement and transformation can predict the far-field radiation characteristics.
{"title":"Near-field to far-field transformation of cylindrical scanning antenna measurement using two dimension fast-fourier transform","authors":"C. Apriono, Nofrizal, Mochamad Dandy Firmansyah, F. Zulkifli, E. Rahardjo","doi":"10.1109/QIR.2017.8168513","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168513","url":null,"abstract":"Radiation characteristics of an antenna should be tested through a precise measurement procedure. To provide an actual parameter of an antenna radiation, measurement must be performed in the far-field region and its distance is proportional to the antenna's dimension. Therefore, in a limited space of an anechoic chamber facility, antenna measurement has a constraint to a maximum dimension of the antenna under test. Near-field measurement method has been an alternative to overcome this problem. However, additional techniques, such as sampling, scanning mechanism, transformation computation, cannot be avoided to obtain the actual antenna radiation parameters. In this research, we study cylindrical scanning technique to obtain sampling data because it is simpler than the spherical scanning in mechanical setup and can produce radiation pattern results in completely two dimension polar diagrams. Our purpose is to provide low cost and reasonable performance of a near-field measurement system. Two dimension Fast-Fourier Transform is used to process and analyze the near-field data into the far-field data. Other methods, i.e. one dimensional Fast-Fourier transform and numerical method, are also performed to compare the accuracy and efficiency of the proposed method. Near-field data generated from experiment data measured of 8-array micro-strip antenna at resonant frequency 3.35 GHz. Transformation results show that average deviations of one dimension Fast-Fourier Transform, two dimension Fast-Fourier Transform and the numerical method are 6.83 dB, 3.04 dB, and 3.77 dB, respectively. These results show the minimum discrepancies between the transform and the expected far-field obtained by using the two dimensions Fast-Fourier Transform. This method has shown near-field measurement and transformation can predict the far-field radiation characteristics.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"17 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":"131883247","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}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168475
Brahmastro Kresnaraman, Yasutomo Kawanishi, Daisuke Deguchi, Tomokazu Takahashi, Y. Mekada, I. Ide, H. Murase
Surveillance systems play a critical role in security and surveillance. A surveillance system with cameras that work in the visible spectrum is sufficient for most cases. However, problems may arise during the night, or in areas with less than ideal illumination conditions. Cameras with thermal infrared technology can be a better option in these situations since they do not rely on illumination to observe the environment. Furthermore, in our daily lives, it is common for humans to wear headgears such as glasses, masks, and hats. In surveillance, such headgears can be a hindrance to the identification of a person, and hence pose a certain degree of risk. This is not ideal in areas where the identity of a person is important, for example, in a bank. Therefore, in this paper we propose a headgear recognition method using an innovative decomposition approach on thermal infrared images. The decomposition method is based on Robust Principal Component Analysis, a modification of the popular Principal Component Analysis. The proposed method performs decomposition on a human image and isolates headgears in the image for recognition purposes. Experiments were conducted to evaluate the capability of the proposed method. The results show a positive outcome when compared with other methods.
{"title":"Headgear recognition by decomposing human images in the thermal infrared spectrum","authors":"Brahmastro Kresnaraman, Yasutomo Kawanishi, Daisuke Deguchi, Tomokazu Takahashi, Y. Mekada, I. Ide, H. Murase","doi":"10.1109/QIR.2017.8168475","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168475","url":null,"abstract":"Surveillance systems play a critical role in security and surveillance. A surveillance system with cameras that work in the visible spectrum is sufficient for most cases. However, problems may arise during the night, or in areas with less than ideal illumination conditions. Cameras with thermal infrared technology can be a better option in these situations since they do not rely on illumination to observe the environment. Furthermore, in our daily lives, it is common for humans to wear headgears such as glasses, masks, and hats. In surveillance, such headgears can be a hindrance to the identification of a person, and hence pose a certain degree of risk. This is not ideal in areas where the identity of a person is important, for example, in a bank. Therefore, in this paper we propose a headgear recognition method using an innovative decomposition approach on thermal infrared images. The decomposition method is based on Robust Principal Component Analysis, a modification of the popular Principal Component Analysis. The proposed method performs decomposition on a human image and isolates headgears in the image for recognition purposes. Experiments were conducted to evaluate the capability of the proposed method. The results show a positive outcome when compared with other methods.","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":"120958375","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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