Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168529
Gregorius Ivan Baskara, M. Suryanegara
5G air interface system is expected to provide an efficient usage of system resources and available spectrum. Higher main-lobe and lower side-lobe power are keys to achieve its efficiency. Filter Bank Multi-Carrier (FBMC) has been actively investigated for years and capable to enhance current system. This paper aims to study and to simulate the spectrum performance of FBMC utilizing Mirabbasi-Martin filter with a variation of overlap factor g = 3, 4, 5, 6. The results are comparing between the bandwidth, main-lobe power and side-lobe power of FBMC and OFDM. The FBMC g=4 is giving the most optimum performance because it performs higher main lobe power at a comparable OFDM bandwidth. Subsequently, we conduct computational simulation in the practical case of mobile network operator working at 945 MHz–952.5 MHz. The results have indicated a significant bandwidth efficiency and lower side-lobe power outside the spectrum band allocation.
{"title":"Study of filter-bank multi carrier (FBMC) utilizing mirabbasi-martin filter for 5G system","authors":"Gregorius Ivan Baskara, M. Suryanegara","doi":"10.1109/QIR.2017.8168529","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168529","url":null,"abstract":"5G air interface system is expected to provide an efficient usage of system resources and available spectrum. Higher main-lobe and lower side-lobe power are keys to achieve its efficiency. Filter Bank Multi-Carrier (FBMC) has been actively investigated for years and capable to enhance current system. This paper aims to study and to simulate the spectrum performance of FBMC utilizing Mirabbasi-Martin filter with a variation of overlap factor g = 3, 4, 5, 6. The results are comparing between the bandwidth, main-lobe power and side-lobe power of FBMC and OFDM. The FBMC g=4 is giving the most optimum performance because it performs higher main lobe power at a comparable OFDM bandwidth. Subsequently, we conduct computational simulation in the practical case of mobile network operator working at 945 MHz–952.5 MHz. The results have indicated a significant bandwidth efficiency and lower side-lobe power outside the spectrum band allocation.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"9 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":"116838892","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.2017.8168528
W. Ananda
External Quantum Efficiency (EQE) measurement is one important method that is implemented to observe solar cells' behaviour in a specific range of wavelength. This research measured EQE in different type of solar cells: silicon, dye-sensitised solar cell (DSSC), and perovskite solar cell. The objectives of this research are to understand the correct EQE measurement method and to understand the factors that affect EQE result on the three types of measured solar cells. Dedicated illuminator, monochromator, and lock-in amplifier, as the main equipments, were used in the experiments. The method used was the latest version of the standard for doing EQE measurement, which is ASTM E1021-15. The spectral responsivity (SR) has to be measured first before calculating the EQE value. This value was then validated using current density value obtained from current-voltage measurement. As a result, the silicon has the highest EQE among them all, but it is the perovskite which has the same profile with standard solar irradiance spectrum. It means that perovskite solar cell has the potency to maximise the utilisation of solar irradiance. Some critical points of measurements had also been identified during research. First is the providing of the testing vacuum chamber to minimise the influence of the environment. Second is the importance of regular calibration of the reference photodetector. Third is the illuminated area of reference photodetector. Fourth is the nonlinearity of SR versus light intensity in the DSSC.
{"title":"External quantum efficiency measurement of solar cell","authors":"W. Ananda","doi":"10.1109/QIR.2017.8168528","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168528","url":null,"abstract":"External Quantum Efficiency (EQE) measurement is one important method that is implemented to observe solar cells' behaviour in a specific range of wavelength. This research measured EQE in different type of solar cells: silicon, dye-sensitised solar cell (DSSC), and perovskite solar cell. The objectives of this research are to understand the correct EQE measurement method and to understand the factors that affect EQE result on the three types of measured solar cells. Dedicated illuminator, monochromator, and lock-in amplifier, as the main equipments, were used in the experiments. The method used was the latest version of the standard for doing EQE measurement, which is ASTM E1021-15. The spectral responsivity (SR) has to be measured first before calculating the EQE value. This value was then validated using current density value obtained from current-voltage measurement. As a result, the silicon has the highest EQE among them all, but it is the perovskite which has the same profile with standard solar irradiance spectrum. It means that perovskite solar cell has the potency to maximise the utilisation of solar irradiance. Some critical points of measurements had also been identified during research. First is the providing of the testing vacuum chamber to minimise the influence of the environment. Second is the importance of regular calibration of the reference photodetector. Third is the illuminated area of reference photodetector. Fourth is the nonlinearity of SR versus light intensity in the DSSC.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"7 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":"115033604","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.2017.8168473
Prima Dewi Purnamasari, A. A. P. Ratna, B. Kusumoputro
This paper proposes a novel relative wavelet bispectrum (RWB) approach for EEG signal feature extraction method to differentiate the signal between the alcoholic over the non-alcoholic subjects. Firstly, the EEG signal is calculated for its autocorrelation frequencies as the basic step in the bispectrum calculation. Then, the discrete wavelet transform (DWT) is applied substituting the FFT which usually is used in the bispectrum calculation. Lastly, the relative value of each frequency band is calculated for both the approximation and the details parts, producing the RWB. The proposed methodology is implemented in an alcoholic automated detection system using 1200 data samples from UCI EEG Database for alcoholism. Based on the experiments, the setting value of lag in the autocorrelation calculation was evidently very influential on the recognition rate obtained, i.e. the maximum value for the lag was the best. Using cross validation, the highest results from RWB feature extraction method with ANN classifier achieved about 90% recognition rate.
{"title":"Relative wavelet bispectrum feature for alcoholic EEG signal classification using artificial neural network","authors":"Prima Dewi Purnamasari, A. A. P. Ratna, B. Kusumoputro","doi":"10.1109/QIR.2017.8168473","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168473","url":null,"abstract":"This paper proposes a novel relative wavelet bispectrum (RWB) approach for EEG signal feature extraction method to differentiate the signal between the alcoholic over the non-alcoholic subjects. Firstly, the EEG signal is calculated for its autocorrelation frequencies as the basic step in the bispectrum calculation. Then, the discrete wavelet transform (DWT) is applied substituting the FFT which usually is used in the bispectrum calculation. Lastly, the relative value of each frequency band is calculated for both the approximation and the details parts, producing the RWB. The proposed methodology is implemented in an alcoholic automated detection system using 1200 data samples from UCI EEG Database for alcoholism. Based on the experiments, the setting value of lag in the autocorrelation calculation was evidently very influential on the recognition rate obtained, i.e. the maximum value for the lag was the best. Using cross validation, the highest results from RWB feature extraction method with ANN classifier achieved about 90% recognition rate.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"419 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":"122448855","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.2017.8168517
Fitriyanti Mayasari, R. Dalimi
Biofuel is one of the best alternative solutions to fulfill the fuel demand, due to the increasing of energy needs and the limited reserve of fossil fuel. Biodiesel, a liquid biofuel and derived from biomass, is produced from vegetable oil, animal fat and other sources to replace diesel oil. Indonesia has been producing biodiesel from vegetable oil, such as Crude Palm Oil (CPO). Because most of Biodiesel feedstock is derived from plant, which is also utilized for human food, it will become a major problem for food security issue of the country. Furthermore, the feedstock production also has some threats regarding to the limitation of land use for feedstock cultivation and infinite export commodity due to high export demand and promising price. The research aims to assess the production of CPO as the Biodiesel feedstock in Indonesia with all related constraints and without threating the food security. Using Dynamic Modeling with Stella Software, the CPO production is modeled with influence variables and their correlations, such as feedstock demand for export, food and Biodiesel, feedstock consumption, land, productivity and policy regarding CPO production, Biodiesel demand and Diesel oil import. The simulation results, that in the year 2019, CPO Production for energy will not be sufficient to fulfill the Biodiesel Demand, but if the reserve of CPO Supply is utilized for energy, there will be plenty biodiesel produced to meet the demand, without interfering the food security and export commodity. The Government should synchronize the distribution of CPO by making list of priority order (food, fuel, export) in order to attain food and energy security. If B30 mandate is being accelerated, CPO export commodity should be limited to maximum 74.7 % of CPO Production in order to meet this mandate. With this scenario, diesel oil import could be reduced about 1.7–1.8 million kL.
{"title":"Dynamic modeling of CPO supply to fulfill biodiesel demand in Indonesia","authors":"Fitriyanti Mayasari, R. Dalimi","doi":"10.1109/QIR.2017.8168517","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168517","url":null,"abstract":"Biofuel is one of the best alternative solutions to fulfill the fuel demand, due to the increasing of energy needs and the limited reserve of fossil fuel. Biodiesel, a liquid biofuel and derived from biomass, is produced from vegetable oil, animal fat and other sources to replace diesel oil. Indonesia has been producing biodiesel from vegetable oil, such as Crude Palm Oil (CPO). Because most of Biodiesel feedstock is derived from plant, which is also utilized for human food, it will become a major problem for food security issue of the country. Furthermore, the feedstock production also has some threats regarding to the limitation of land use for feedstock cultivation and infinite export commodity due to high export demand and promising price. The research aims to assess the production of CPO as the Biodiesel feedstock in Indonesia with all related constraints and without threating the food security. Using Dynamic Modeling with Stella Software, the CPO production is modeled with influence variables and their correlations, such as feedstock demand for export, food and Biodiesel, feedstock consumption, land, productivity and policy regarding CPO production, Biodiesel demand and Diesel oil import. The simulation results, that in the year 2019, CPO Production for energy will not be sufficient to fulfill the Biodiesel Demand, but if the reserve of CPO Supply is utilized for energy, there will be plenty biodiesel produced to meet the demand, without interfering the food security and export commodity. The Government should synchronize the distribution of CPO by making list of priority order (food, fuel, export) in order to attain food and energy security. If B30 mandate is being accelerated, CPO export commodity should be limited to maximum 74.7 % of CPO Production in order to meet this mandate. With this scenario, diesel oil import could be reduced about 1.7–1.8 million kL.","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":"129577922","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.2017.8168450
M. Hori, Tokinobu Watanabe, Y. Ono
Time-domain charge pumping, which monitors transient currents during the charge pumping process, is a novel technique for analyzing interface defects of semiconductors. In this paper, we make a brief introduction about our recent works on the development of the time domain charge pumping, aiming at the detailed analysis of metal-oxide-semiconductor interface defects. We in particular show that the time-domain charge pumping enables us to obtain capture cross sections of electrons and holes independently, and to resolve electron-emission spectra into two components with different time constants. It is also shown that it allows us to investigate complicated current flow during the charge pumping process in silicon-on-insulator devices.
{"title":"Real-time monitoring of charge-pumping process for SiO2/Si interface defect analysis","authors":"M. Hori, Tokinobu Watanabe, Y. Ono","doi":"10.1109/QIR.2017.8168450","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168450","url":null,"abstract":"Time-domain charge pumping, which monitors transient currents during the charge pumping process, is a novel technique for analyzing interface defects of semiconductors. In this paper, we make a brief introduction about our recent works on the development of the time domain charge pumping, aiming at the detailed analysis of metal-oxide-semiconductor interface defects. We in particular show that the time-domain charge pumping enables us to obtain capture cross sections of electrons and holes independently, and to resolve electron-emission spectra into two components with different time constants. It is also shown that it allows us to investigate complicated current flow during the charge pumping process in silicon-on-insulator devices.","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":"128666669","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.2017.8168489
Rini Wisnu Wardhani, Dion Ogi, Mohamad Syahral, P. D. Septono
The Advanced Encryption Standard (AES) became the standard for encryption to protect the sensitive information. With the increasing use of portable and wireless devices and demanding information security needs in embedded systems, prompted efforts to find fast software based implementation of AES encryption/decryption capable of running on resource constrained environment in terms of processor speed, code space, energy usage and in particular those portable devices that have 32-bits ARM Cortex-M3 processor. In this paper, we propose an implementation of AES on ARM Cortex-M3 processor with minimum memory will be useful for deploying it in low cost applications. The algorithm is compiled using LPCXpresso IDE targeting into an ARM LPC1769 processor board. The results are presented in this paper for key length of 128 bits. After AES encryption the cipher voice is sent through communication module to another node, while receiving cipher voice through communication module the plain text is obtained by AES decryption.
{"title":"Fast implementation of AES on Cortex-M3 for security information devices","authors":"Rini Wisnu Wardhani, Dion Ogi, Mohamad Syahral, P. D. Septono","doi":"10.1109/QIR.2017.8168489","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168489","url":null,"abstract":"The Advanced Encryption Standard (AES) became the standard for encryption to protect the sensitive information. With the increasing use of portable and wireless devices and demanding information security needs in embedded systems, prompted efforts to find fast software based implementation of AES encryption/decryption capable of running on resource constrained environment in terms of processor speed, code space, energy usage and in particular those portable devices that have 32-bits ARM Cortex-M3 processor. In this paper, we propose an implementation of AES on ARM Cortex-M3 processor with minimum memory will be useful for deploying it in low cost applications. The algorithm is compiled using LPCXpresso IDE targeting into an ARM LPC1769 processor board. The results are presented in this paper for key length of 128 bits. After AES encryption the cipher voice is sent through communication module to another node, while receiving cipher voice through communication module the plain text is obtained by AES decryption.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"29 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":"127940231","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.2017.8168523
G. Wibisono, Euis Suryati
At the moment, PT. PLN (PLN) as national electricity company have to visit customer place to disconnect or switch off (permanent break) the KWh meter if the customer did not pay the billing on time. It is important to design of a system that could automatically disconnect electricity that flow to customer temporary or/and permanent when the bill is not paid by customer while deadline is overdue. In this research, M2M as KWh meter controlling system will be designed and evaluated its performance. The proposed system is designed to minimize the time for breaking and improve PLN services. The proposed system consists of KWh meter, actuator and sensor, communication devices and application. The command to actuator to disconnect or switch off (permanent break) is based on the billing status of the customer at deadline of payment period. If the customer didn't pay the billing until deadline at the second month, the electricity will be disconnected to customer KWh meter, while the KWh meter will be permanent broke (switched off) if the customer didn't pay the billing until the deadline of the third months. It is shown from the tested results, that the proposed KWh meter is working properly. It is also shown from the tested results of the KWh meter controlling that the response time to device to disconnect or switch off is shorter than the time response SMS notification that sent to the customer.
{"title":"Machine to machine application as KWh meter controlling","authors":"G. Wibisono, Euis Suryati","doi":"10.1109/QIR.2017.8168523","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168523","url":null,"abstract":"At the moment, PT. PLN (PLN) as national electricity company have to visit customer place to disconnect or switch off (permanent break) the KWh meter if the customer did not pay the billing on time. It is important to design of a system that could automatically disconnect electricity that flow to customer temporary or/and permanent when the bill is not paid by customer while deadline is overdue. In this research, M2M as KWh meter controlling system will be designed and evaluated its performance. The proposed system is designed to minimize the time for breaking and improve PLN services. The proposed system consists of KWh meter, actuator and sensor, communication devices and application. The command to actuator to disconnect or switch off (permanent break) is based on the billing status of the customer at deadline of payment period. If the customer didn't pay the billing until deadline at the second month, the electricity will be disconnected to customer KWh meter, while the KWh meter will be permanent broke (switched off) if the customer didn't pay the billing until the deadline of the third months. It is shown from the tested results, that the proposed KWh meter is working properly. It is also shown from the tested results of the KWh meter controlling that the response time to device to disconnect or switch off is shorter than the time response SMS notification that sent to the customer.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"540 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":"116710263","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.2017.8168472
Faisal Narpati, Basari
Thermal ablation is conducted by utilizing temperature changes to destroy the abnormal tissue or restore its function. The latest technique in thermal ablation is Microwave Ablation (MW Ablation) that rely on the propagation of electromagnetic waves that is able to increase the temperature of a tissue rapidly. Changes in temperature during the ablation process will reduce the water content in the body tissue (78% of the liver tissue is composed of water) and affect the value of permittivity and conductivity of the tissue. These changes cause the impedance matching of the antenna applicator also change during the ablation process. The change on impedance will make the system does not match with the previous resonant frequency. In addition, the microwave ablation applicator, which is designed for specific frequencies (2.4 GHz and 915MHz) with narrow band characteristics will be suffered from aforementioned phenomenon. Meanwhile, according to the previous studies there are other prominent resonant frequencies that used for MW Ablation, i.e. 1.9 GHz, 6 GHz, 9.2 GHz and 10 GHz. Therefore to accommodate some of the frequencies that are widely used in microwave ablation technique and to tackle the problems arising from the reduced transmission efficiency, then an applicator that has ultrawideband (UWB) characteristics is proposed. In this paper, we design an applicator, which has the characteristics of UWB by modifying the ground plane of the applicator by a hexagonal-sectioned coil. The applicator is designed on a FR4 substrate and numerically simulated with liver phantom by using CST Microwave Studio. The proposed applicator is able to have wide bandwidth by 8.1 GHz, with lower frequency (fl) 1.84 GHz and higher frequency (fh) 10 GHz.
{"title":"Design of ultrawideband applicator for microwave ablation aimed at thermal therapy in liver cancer","authors":"Faisal Narpati, Basari","doi":"10.1109/QIR.2017.8168472","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168472","url":null,"abstract":"Thermal ablation is conducted by utilizing temperature changes to destroy the abnormal tissue or restore its function. The latest technique in thermal ablation is Microwave Ablation (MW Ablation) that rely on the propagation of electromagnetic waves that is able to increase the temperature of a tissue rapidly. Changes in temperature during the ablation process will reduce the water content in the body tissue (78% of the liver tissue is composed of water) and affect the value of permittivity and conductivity of the tissue. These changes cause the impedance matching of the antenna applicator also change during the ablation process. The change on impedance will make the system does not match with the previous resonant frequency. In addition, the microwave ablation applicator, which is designed for specific frequencies (2.4 GHz and 915MHz) with narrow band characteristics will be suffered from aforementioned phenomenon. Meanwhile, according to the previous studies there are other prominent resonant frequencies that used for MW Ablation, i.e. 1.9 GHz, 6 GHz, 9.2 GHz and 10 GHz. Therefore to accommodate some of the frequencies that are widely used in microwave ablation technique and to tackle the problems arising from the reduced transmission efficiency, then an applicator that has ultrawideband (UWB) characteristics is proposed. In this paper, we design an applicator, which has the characteristics of UWB by modifying the ground plane of the applicator by a hexagonal-sectioned coil. The applicator is designed on a FR4 substrate and numerically simulated with liver phantom by using CST Microwave Studio. The proposed applicator is able to have wide bandwidth by 8.1 GHz, with lower frequency (fl) 1.84 GHz and higher frequency (fh) 10 GHz.","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":"125825964","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.2017.8168474
Bayu Azmi, Wibisono, A. H. Saputro
A portable gamma ray tomography system has been designed to investigate geothermal power plant pipe scaling. Furthermore, the system could be applied to diagnose industrial processes unit such as pipeline, heat exchanger, and so on. The system consists of mechanical parts, computerized controlled module, a gamma ray source (80 mCi of Cs-137), a scintillation detector NaI(Tl), data acquisition and computer. The mechanical part was designed to meet the portability standard of industrial processes unit such as dimension, position, material type, etc. The investigated object is scanned an in two ways (translation and rotation) of ray transmission to capture attenuated radiation automatically. The result of object investigation is displayed in computer directly using a proposed reconstruction image technique. The reconstruction image was performed using Filtered Back Projection (FBP) algorithm and optimized with the weighted correction factor for each pixel. The weighted correction factor was computed based on the modeling of gamma ray transmission in selected mechanical system. In evaluating the proposed system, experiments were performed using a geothermal power plant pipe that has 275 mm diameter within known scaling form. Steady state water was flowed inside the pipe to simulate multiphase condition in geothermal power plant pipeline. Scanning configuration was set up to 4 mm steps and 32 projections. Based on the chosen evaluation criteria, the reconstruction image of the proposed system shows good result. Finally, the proposed portable gamma ray tomography system is suitable to industrial applications due to its portability and accuracy in detecting the form of pipeline scaling.
设计了一种便携式伽马射线层析成像系统，用于研究地热发电厂管道结垢。此外，该系统还可用于管道、换热器等工业过程单元的故障诊断。该系统由机械部件、计算机控制模块、伽马射线源(80 mCi的Cs-137)、闪烁探测器NaI(Tl)、数据采集和计算机组成。机械部分的尺寸、位置、物料类型等均满足工业加工单元的可移植性标准。对被研究对象进行扫描，并通过两种方式(平移和旋转)的射线透射来自动捕获衰减辐射。利用所提出的重建图像技术，将目标调查结果直接显示在计算机上。重建图像采用滤波反投影(filter Back Projection, FBP)算法，并对每个像素进行加权校正因子优化。根据所选机械系统的伽马射线传输建模，计算加权修正系数。为了评估所提出的系统，实验是使用地热发电厂的管道进行的，该管道在已知的结垢形式内具有275毫米直径。采用稳态水在管道内流动的方法模拟地热发电厂管道的多相状态。扫描配置设置为4毫米步长和32个投影。根据所选择的评价标准，该系统的重建图像显示出良好的效果。最后，所提出的便携式伽马射线层析成像系统由于其便携性和检测管道结垢形式的准确性而适合工业应用。
{"title":"Portable gamma ray tomography system for investigation of geothermal power plant pipe scaling","authors":"Bayu Azmi, Wibisono, A. H. Saputro","doi":"10.1109/QIR.2017.8168474","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168474","url":null,"abstract":"A portable gamma ray tomography system has been designed to investigate geothermal power plant pipe scaling. Furthermore, the system could be applied to diagnose industrial processes unit such as pipeline, heat exchanger, and so on. The system consists of mechanical parts, computerized controlled module, a gamma ray source (80 mCi of Cs-137), a scintillation detector NaI(Tl), data acquisition and computer. The mechanical part was designed to meet the portability standard of industrial processes unit such as dimension, position, material type, etc. The investigated object is scanned an in two ways (translation and rotation) of ray transmission to capture attenuated radiation automatically. The result of object investigation is displayed in computer directly using a proposed reconstruction image technique. The reconstruction image was performed using Filtered Back Projection (FBP) algorithm and optimized with the weighted correction factor for each pixel. The weighted correction factor was computed based on the modeling of gamma ray transmission in selected mechanical system. In evaluating the proposed system, experiments were performed using a geothermal power plant pipe that has 275 mm diameter within known scaling form. Steady state water was flowed inside the pipe to simulate multiphase condition in geothermal power plant pipeline. Scanning configuration was set up to 4 mm steps and 32 projections. Based on the chosen evaluation criteria, the reconstruction image of the proposed system shows good result. Finally, the proposed portable gamma ray tomography system is suitable to industrial applications due to its portability and accuracy in detecting the form of pipeline scaling.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"182 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":"131387087","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.2017.8168478
Suwandi Dwi Sahputro, Fahmi Fadilah, Nanda Avianto Wicaksono, F. Yusivar
This paper describes the design and implementation of adaptive PID control strategy for controlling the angular velocity of the DC motor. Adaptive PID controller is designed to calculate the control parameters which are tuned adaptively to give desired control performance even if parameters of DC Motor are changed. The controller's parameters are online tuned when the motor is running using a Recursive Least Squares (RLS) method. The controller is able to change the value of the controller's constants to maintain motor performance as it is desired when parameters of DC motor are changed. Initially a Pseudo Random Binary Sequence (PRBS) signal is given to the system for 0.07 seconds to get the estimated transfer function of the plant system (DC motor) using the RLS algorithm. From coefficients of the estimated system's transfer function, the poles of a desired characteristic equation can be obtained for the system that has the appropriate output. Thus, the proportional, integral and derivative constants of controller can be obtained by using online pole placement method. Here, an online identification system is used to determine the new control parameters. The effectiveness of this adaptive PID controller is verified by experimental results using a microcontroller STM32F446.
{"title":"Design and implementation of adaptive PID controller for speed control of DC motor","authors":"Suwandi Dwi Sahputro, Fahmi Fadilah, Nanda Avianto Wicaksono, F. Yusivar","doi":"10.1109/QIR.2017.8168478","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168478","url":null,"abstract":"This paper describes the design and implementation of adaptive PID control strategy for controlling the angular velocity of the DC motor. Adaptive PID controller is designed to calculate the control parameters which are tuned adaptively to give desired control performance even if parameters of DC Motor are changed. The controller's parameters are online tuned when the motor is running using a Recursive Least Squares (RLS) method. The controller is able to change the value of the controller's constants to maintain motor performance as it is desired when parameters of DC motor are changed. Initially a Pseudo Random Binary Sequence (PRBS) signal is given to the system for 0.07 seconds to get the estimated transfer function of the plant system (DC motor) using the RLS algorithm. From coefficients of the estimated system's transfer function, the poles of a desired characteristic equation can be obtained for the system that has the appropriate output. Thus, the proportional, integral and derivative constants of controller can be obtained by using online pole placement method. Here, an online identification system is used to determine the new control parameters. The effectiveness of this adaptive PID controller is verified by experimental results using a microcontroller STM32F446.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"252 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":"132703251","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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