Pub Date : 2018-10-01DOI: 10.1109/TENCON.2018.8650117
Noelle Beatrix Galila Cabigao, Maria Carmina Rae Villanueva Gonzaga, Hazel Deluso Laure Anastacia Ballesil Alvarez, M. T. D. Leon, C. V. Densing, J. Hizon, M. Rosales
Video encoding has different methods and techniques in its implementation. Hardware implementations of video encoding systems are usually limited to a single set of compression techniques because of the trade-offs in area and power consumption. A workaround for this is through reconfigurable hardware devices such as the FPGA. The aim of this work is to use an FPGA to extend the set of compression techniques of an available video encoding system by changing the number of intra-prediction modes and motion estimation algorithm. Additionally, since the base system only caters to intra-prediction, an architectural design for the inter-prediction module with full-pixel resolution has been accomplished. The addition of intra-prediction modes showed a very minimal decrease in the total encoding time. This, however, showed 0.44% increase in the resource utilization. The different search algorithms used manifested the expected highest to lowest execution time respectively. The trade-off of higher PSNR versus longer encoding time was shown. An average of 76.96% decrease in execution time was observed while achieving a 0.27% decrease in PSNR.
{"title":"Design of Multiple Prediction Complexity Configurations for an FPGA-Based H.264 Baseline Profile Encoder","authors":"Noelle Beatrix Galila Cabigao, Maria Carmina Rae Villanueva Gonzaga, Hazel Deluso Laure Anastacia Ballesil Alvarez, M. T. D. Leon, C. V. Densing, J. Hizon, M. Rosales","doi":"10.1109/TENCON.2018.8650117","DOIUrl":"https://doi.org/10.1109/TENCON.2018.8650117","url":null,"abstract":"Video encoding has different methods and techniques in its implementation. Hardware implementations of video encoding systems are usually limited to a single set of compression techniques because of the trade-offs in area and power consumption. A workaround for this is through reconfigurable hardware devices such as the FPGA. The aim of this work is to use an FPGA to extend the set of compression techniques of an available video encoding system by changing the number of intra-prediction modes and motion estimation algorithm. Additionally, since the base system only caters to intra-prediction, an architectural design for the inter-prediction module with full-pixel resolution has been accomplished. The addition of intra-prediction modes showed a very minimal decrease in the total encoding time. This, however, showed 0.44% increase in the resource utilization. The different search algorithms used manifested the expected highest to lowest execution time respectively. The trade-off of higher PSNR versus longer encoding time was shown. An average of 76.96% decrease in execution time was observed while achieving a 0.27% decrease in PSNR.","PeriodicalId":132900,"journal":{"name":"TENCON 2018 - 2018 IEEE Region 10 Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114980697","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 : 2018-10-01DOI: 10.1109/TENCON.2018.8650106
S. S. Sarnin, Aida Akbar, W. N. W. Mohamad, A. Idris, N. F. Naim, N. Ya'acob
"Maleficent Mirror" is a design based on the Raspberry Pi 3 that is equipped with high technology and innovative applications and is the latest design in place of the mirror that we use today. In this era of modernization, we've all been exposed to many things that lead to the development of the country and abroad. The success proves that many individuals with changing lifestyles with more modern methods always use the internet in a variety of things. Usually, an individual becomes difficult to find enough time in the day to accomplish all the tasks that are part of life, so multitasking becomes necessary. In the morning it is an important time to prepare you in front of the mirror, which is often slow and time-consuming. This Smart Mirror is able to handle a variety of problems in doing business in the same time. The problem lies in identifying ways to control all the factors that can affect a person individual to prepare us for each day in addition to performing all the tasks those are important just in front of the mirror with more efficient. The goal of this project is to create a product that meets the needs of a person when preparing and receive information such as news, weather, time and other useful information. This mirror is designed with the ability to collect this information during the preparation of a morning daily life in order to more efficiently and easily. To make this more interesting mirror, we can develop our products to include a variety of control methods, as well as music and other entertainment. For the whole project, we hope that this smart glasses project, exciting and innovative products can enhance a more modern way of life.
{"title":"Maleficent Mirror with ALEXA Voice Services as an Internet of Things Implement Using Raspberry Pi 3 Model B","authors":"S. S. Sarnin, Aida Akbar, W. N. W. Mohamad, A. Idris, N. F. Naim, N. Ya'acob","doi":"10.1109/TENCON.2018.8650106","DOIUrl":"https://doi.org/10.1109/TENCON.2018.8650106","url":null,"abstract":"\"Maleficent Mirror\" is a design based on the Raspberry Pi 3 that is equipped with high technology and innovative applications and is the latest design in place of the mirror that we use today. In this era of modernization, we've all been exposed to many things that lead to the development of the country and abroad. The success proves that many individuals with changing lifestyles with more modern methods always use the internet in a variety of things. Usually, an individual becomes difficult to find enough time in the day to accomplish all the tasks that are part of life, so multitasking becomes necessary. In the morning it is an important time to prepare you in front of the mirror, which is often slow and time-consuming. This Smart Mirror is able to handle a variety of problems in doing business in the same time. The problem lies in identifying ways to control all the factors that can affect a person individual to prepare us for each day in addition to performing all the tasks those are important just in front of the mirror with more efficient. The goal of this project is to create a product that meets the needs of a person when preparing and receive information such as news, weather, time and other useful information. This mirror is designed with the ability to collect this information during the preparation of a morning daily life in order to more efficiently and easily. To make this more interesting mirror, we can develop our products to include a variety of control methods, as well as music and other entertainment. For the whole project, we hope that this smart glasses project, exciting and innovative products can enhance a more modern way of life.","PeriodicalId":132900,"journal":{"name":"TENCON 2018 - 2018 IEEE Region 10 Conference","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115443942","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 : 2018-10-01DOI: 10.1109/TENCON.2018.8650511
Farhan Amin, Awais Ahmad, G. Choi
in recent time rapid and extraordinary technological advancement is dominated by the social internet of things (SIoT). SIoT connects people together socially and opens doors to people, to share ideas by using this information. Typically, SIoT deals with the massive amount of data and information. This data is used by various online social networks (ONS), i.e. Twitter, LinkedIn and Facebook etc. analyzing and mining of useful extracted information from these social networks is not an easy task. SIoT has a special interest in numerous research fields, i.e. computer sciences and social sciences. The detection and mining of a community reveal how the structure affects the people and their relationships. In order to facilitate the community discovery, a wide range of tools has been developed over years. Each of them differs from other, in respect of features and benefits. Choosing the right tool is somehow a difficult task. In order to overcome this difficulty, our work offers an analysis by dividing them into various categories such as network platform, algorithm complexity, community detection and their execution time. Finally, we discussed various visualization layouts of social networks which are helpful in order to precise the network data.
{"title":"Community Detection and Mining Using Complex Networks Tools in Social Internet of Things","authors":"Farhan Amin, Awais Ahmad, G. Choi","doi":"10.1109/TENCON.2018.8650511","DOIUrl":"https://doi.org/10.1109/TENCON.2018.8650511","url":null,"abstract":"in recent time rapid and extraordinary technological advancement is dominated by the social internet of things (SIoT). SIoT connects people together socially and opens doors to people, to share ideas by using this information. Typically, SIoT deals with the massive amount of data and information. This data is used by various online social networks (ONS), i.e. Twitter, LinkedIn and Facebook etc. analyzing and mining of useful extracted information from these social networks is not an easy task. SIoT has a special interest in numerous research fields, i.e. computer sciences and social sciences. The detection and mining of a community reveal how the structure affects the people and their relationships. In order to facilitate the community discovery, a wide range of tools has been developed over years. Each of them differs from other, in respect of features and benefits. Choosing the right tool is somehow a difficult task. In order to overcome this difficulty, our work offers an analysis by dividing them into various categories such as network platform, algorithm complexity, community detection and their execution time. Finally, we discussed various visualization layouts of social networks which are helpful in order to precise the network data.","PeriodicalId":132900,"journal":{"name":"TENCON 2018 - 2018 IEEE Region 10 Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124291618","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 : 2018-10-01DOI: 10.1109/TENCON.2018.8650482
Miao Luo, Qinye Yin
In this paper, we investigate physical-layer transmission security problem of a two-way relay wireless network consisting of two legitimate terminal nodes who wants to communicate with each other in presence of one eavesdropper, with help of N intermediate nodes. We propose a cooperative relaying and jamming strategy, which selecting one intermediate node to create intentional interference upon the eavesdropper, while other K = N −1 intermediate nodes operating in relay mode and assisting the source nodes to deliver data to their corresponding destinations using an amplify-and-forward (AF) protocol. All N intermediate nodes in this system are under a per-node power constraint. When K ≥ 3, we propose two different system design criteria based on null-space beamforming, to maximize secrecy sum rate by rate-splitting method with a bisection numerical algorithm iteratively getting the maximal secrecy sum rate, or to maximize the minimum rate between the two terminals. And we also propose the modified security schemes when the number of intermediate nodes is not enough for the previously mentioned schemes (K < 3).
{"title":"Security Transmission Designs in Two-Way Relay Wireless Networks","authors":"Miao Luo, Qinye Yin","doi":"10.1109/TENCON.2018.8650482","DOIUrl":"https://doi.org/10.1109/TENCON.2018.8650482","url":null,"abstract":"In this paper, we investigate physical-layer transmission security problem of a two-way relay wireless network consisting of two legitimate terminal nodes who wants to communicate with each other in presence of one eavesdropper, with help of N intermediate nodes. We propose a cooperative relaying and jamming strategy, which selecting one intermediate node to create intentional interference upon the eavesdropper, while other K = N −1 intermediate nodes operating in relay mode and assisting the source nodes to deliver data to their corresponding destinations using an amplify-and-forward (AF) protocol. All N intermediate nodes in this system are under a per-node power constraint. When K ≥ 3, we propose two different system design criteria based on null-space beamforming, to maximize secrecy sum rate by rate-splitting method with a bisection numerical algorithm iteratively getting the maximal secrecy sum rate, or to maximize the minimum rate between the two terminals. And we also propose the modified security schemes when the number of intermediate nodes is not enough for the previously mentioned schemes (K < 3).","PeriodicalId":132900,"journal":{"name":"TENCON 2018 - 2018 IEEE Region 10 Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116894513","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 : 2018-10-01DOI: 10.1109/TENCON.2018.8650548
Y. P. Lim, Yew Leong Toh, S. Cheab, G. S. Ng, P. Wong
In this paper, we implement a new class of filter function, namely the chained-function, in waveguide technology. A sixth-order chained-function polynomial with the seed function of order (1, 2, 3) is implemented in a WR-12 waveguide filter to provide the required out of band rejection level that satisfies a given set of filter specifications. The filter operates at 70 GHz with a theoretical in-band return loss level of 21.14 dB and a fractional bandwidth of 1.43%. The design and synthesize of the chained-function waveguide filter are carried out based on a coupling matrix synthesis approach. A working simulation model using ANSYS High Frequency Structure Simulator (HFSS) is constructed to validate the filter design. The novel chained function polynomial has the ability to reduce the sensitivity with respect to manufacturing tolerance while maintaining a maximum permitted in-band insertion loss ripple. In short, the research findings lead to a high performance, low-cost and sustainable filter implementation with a minimum tuning effort pertaining to the future 5G millimeter-wave communication system.
{"title":"Chained-Function Waveguide Filter for 5G and Beyond","authors":"Y. P. Lim, Yew Leong Toh, S. Cheab, G. S. Ng, P. Wong","doi":"10.1109/TENCON.2018.8650548","DOIUrl":"https://doi.org/10.1109/TENCON.2018.8650548","url":null,"abstract":"In this paper, we implement a new class of filter function, namely the chained-function, in waveguide technology. A sixth-order chained-function polynomial with the seed function of order (1, 2, 3) is implemented in a WR-12 waveguide filter to provide the required out of band rejection level that satisfies a given set of filter specifications. The filter operates at 70 GHz with a theoretical in-band return loss level of 21.14 dB and a fractional bandwidth of 1.43%. The design and synthesize of the chained-function waveguide filter are carried out based on a coupling matrix synthesis approach. A working simulation model using ANSYS High Frequency Structure Simulator (HFSS) is constructed to validate the filter design. The novel chained function polynomial has the ability to reduce the sensitivity with respect to manufacturing tolerance while maintaining a maximum permitted in-band insertion loss ripple. In short, the research findings lead to a high performance, low-cost and sustainable filter implementation with a minimum tuning effort pertaining to the future 5G millimeter-wave communication system.","PeriodicalId":132900,"journal":{"name":"TENCON 2018 - 2018 IEEE Region 10 Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127325958","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 : 2018-10-01DOI: 10.1109/TENCON.2018.8650404
Greco Gervin Cruz, Leandrew Miguel Guzman, Mar Francis D. De Guzman, S. M. Cheng
Communication is essential for coastal and rural areas, and providing an alternative method of communication for isolated coves through maritime communications is a way to cater that need. In order to create a reliable communication system, antenna misalignment attributed to wave motion of the sea must be accounted for because losses in transmission and reception occur. The scope of this study covers the angular variation of wave motion, particularly the roll angle tilting an antenna experiences. In this paper, improvements of using diversity techniques for a 2.4 GHz communication link in the maritime environment were investigated. In particular, spatial diversity, which uses independent multiple antennas to achieve a level of performance one antenna could not, was employed. The use of selection diversity, a type of spatial diversity that selects the antenna branch with the best signal strength, to compensate antenna misalignment is considered and analyzed. A transmitter and receiver front-end incorporating selection diversity were designed and implemented. Results prove that the use of the proposed scheme increase the overall gain of the communication link. There is an average of 1.35 dB and 5.3 dB increase for 2 and 3 antennas respectively, in using receive diversity compared to no diversity, and an average of 2.4 dB increase in using 3 antenna transmit diversity as opposed to no diversity, all of which were exposed to continuous tilting conditions. The presented plots exhibit a general trend showing that selection diversity reduces the received signal strength fluctuations to lower power, and minimizes the losses due to antenna misalignment.
{"title":"Compensation of Antenna Misalignment Using Selection Diversity for Maritime Communications","authors":"Greco Gervin Cruz, Leandrew Miguel Guzman, Mar Francis D. De Guzman, S. M. Cheng","doi":"10.1109/TENCON.2018.8650404","DOIUrl":"https://doi.org/10.1109/TENCON.2018.8650404","url":null,"abstract":"Communication is essential for coastal and rural areas, and providing an alternative method of communication for isolated coves through maritime communications is a way to cater that need. In order to create a reliable communication system, antenna misalignment attributed to wave motion of the sea must be accounted for because losses in transmission and reception occur. The scope of this study covers the angular variation of wave motion, particularly the roll angle tilting an antenna experiences. In this paper, improvements of using diversity techniques for a 2.4 GHz communication link in the maritime environment were investigated. In particular, spatial diversity, which uses independent multiple antennas to achieve a level of performance one antenna could not, was employed. The use of selection diversity, a type of spatial diversity that selects the antenna branch with the best signal strength, to compensate antenna misalignment is considered and analyzed. A transmitter and receiver front-end incorporating selection diversity were designed and implemented. Results prove that the use of the proposed scheme increase the overall gain of the communication link. There is an average of 1.35 dB and 5.3 dB increase for 2 and 3 antennas respectively, in using receive diversity compared to no diversity, and an average of 2.4 dB increase in using 3 antenna transmit diversity as opposed to no diversity, all of which were exposed to continuous tilting conditions. The presented plots exhibit a general trend showing that selection diversity reduces the received signal strength fluctuations to lower power, and minimizes the losses due to antenna misalignment.","PeriodicalId":132900,"journal":{"name":"TENCON 2018 - 2018 IEEE Region 10 Conference","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127342929","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 : 2018-10-01DOI: 10.1109/TENCON.2018.8650409
Kyaw Myo Win, Ryo Torihara, Shohei Kita, T. Sakoda, Y. Ota, K. Nishioka, Noriyuki Hayashi
The effect of ambient temperature on the performance of a roof mounted Cu (In, Ga) Se2 [CIGS] photovoltaic (PV) system, which is installed in the suburb residential area of Miyazaki city, Japan, has been analyzed for the period of 2012-2017. The research work has been carried out by monitoring the variation of the performance of the PV array and PV system. The PV array and PV system with a higher ambient temperature period experience a lower performance. High ambient temperatures determine a decrease of output power performances in the same conditions of solar insolation. The results show that there is a fair negative linear relationship between ambient temperature and the performances of the PV array and PV system. A statistical analysis has also been done and the results indicate that the linear relationship between the ambient temperature and performance ratio is able to be reasonably applied, and the slope of the approximated straight lines are between -0.00230 [1/deg-C] and −0.00760 [1/deg-C]. In short, the elevating of ambient temperature contributed to the negative impact on the output performances of the PV array and PV system.
{"title":"Long-Term Observation of Ambient Temperature Effects on the Performance of A 60 kW CIGS Solar Power System Installed in Miyazaki","authors":"Kyaw Myo Win, Ryo Torihara, Shohei Kita, T. Sakoda, Y. Ota, K. Nishioka, Noriyuki Hayashi","doi":"10.1109/TENCON.2018.8650409","DOIUrl":"https://doi.org/10.1109/TENCON.2018.8650409","url":null,"abstract":"The effect of ambient temperature on the performance of a roof mounted Cu (In, Ga) Se2 [CIGS] photovoltaic (PV) system, which is installed in the suburb residential area of Miyazaki city, Japan, has been analyzed for the period of 2012-2017. The research work has been carried out by monitoring the variation of the performance of the PV array and PV system. The PV array and PV system with a higher ambient temperature period experience a lower performance. High ambient temperatures determine a decrease of output power performances in the same conditions of solar insolation. The results show that there is a fair negative linear relationship between ambient temperature and the performances of the PV array and PV system. A statistical analysis has also been done and the results indicate that the linear relationship between the ambient temperature and performance ratio is able to be reasonably applied, and the slope of the approximated straight lines are between -0.00230 [1/deg-C] and −0.00760 [1/deg-C]. In short, the elevating of ambient temperature contributed to the negative impact on the output performances of the PV array and PV system.","PeriodicalId":132900,"journal":{"name":"TENCON 2018 - 2018 IEEE Region 10 Conference","volume":"170 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124739289","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}
In order to use remote wind power/solar energy, the scale of power grid interconnection grow rapidly. If transient stability can be increased when faults happen on tie lines, the transmission capacity can be increased too. Dynamic braking can increase transient stability by increasing deceleration area, but it's difficult to coordinate several braking devices and calculate braking amount in real time. Things are no longer so after rotor angle droop (RAD) controllers are deployed across the power system. Since all rotor angles of generators will be fixed in rotating coordination system determined by global position system (GPS) pulse per second (PPS) signal, dynamic braking amount can be calculated by RAD controller by using local speed and rotor measurement. This paper shows the revised equal area criteria (EAC) when this kind of dynamic braking is used. The relationships between RAD controller parameter (saturation threshold) and the braking effect are also investigated. Simulation results in IEEE 68 nodes system show that, by applying dynamic braking on several generators simultaneously, critical clearing time can be increased dramatically when faults happen on tie lines.
{"title":"Transient Stability Enhancement Brought by Rotor Angle Droop Control When Tie-line Faults Happen","authors":"Jiangnan Zhang, Q. Wei, Weimin Guo, Yaohua Tang, Xinghuang Wu","doi":"10.1109/TENCON.2018.8650080","DOIUrl":"https://doi.org/10.1109/TENCON.2018.8650080","url":null,"abstract":"In order to use remote wind power/solar energy, the scale of power grid interconnection grow rapidly. If transient stability can be increased when faults happen on tie lines, the transmission capacity can be increased too. Dynamic braking can increase transient stability by increasing deceleration area, but it's difficult to coordinate several braking devices and calculate braking amount in real time. Things are no longer so after rotor angle droop (RAD) controllers are deployed across the power system. Since all rotor angles of generators will be fixed in rotating coordination system determined by global position system (GPS) pulse per second (PPS) signal, dynamic braking amount can be calculated by RAD controller by using local speed and rotor measurement. This paper shows the revised equal area criteria (EAC) when this kind of dynamic braking is used. The relationships between RAD controller parameter (saturation threshold) and the braking effect are also investigated. Simulation results in IEEE 68 nodes system show that, by applying dynamic braking on several generators simultaneously, critical clearing time can be increased dramatically when faults happen on tie lines.","PeriodicalId":132900,"journal":{"name":"TENCON 2018 - 2018 IEEE Region 10 Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124991920","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 : 2018-10-01DOI: 10.1109/TENCON.2018.8650371
Jay Mark S. Lagmay, Lionel Jed C. Leyba, Alessandro T. Santiago, Lea B. Tumabotabo, Wilbert Jethro R. Limjoco, N. Tiglao
This paper details a system that provides positioning, obstacle detection and avoidance, pathfinding, and energy monitoring suitable for indoor operation designed for the Crazyflie 2.0 drone. The positioning subsystem was achieved by a hybrid of Received Signal Strength Indicators and Dead Reckoning. Obstacle detection and avoidance used an IR sensor to detect objects in the drone’s path, allowing the drone to look for alternate paths. Pathfinding used a modified Node Array A* algorithm implemented in a 3D model of the testing area within the Unity engine. Finally, energy monitoring used the drone’s built-in Python library to log voltage values and were sent to the Unity system, which reroutes the drone upon detecting a low battery voltage. The system was able to provide a basic autonomous navigation system that prioritizes safety of the drone and its flying environment.
本文详细介绍了为crazyfly 2.0无人机设计的适合室内操作的定位、障碍物检测与避障、寻径和能量监测系统。定位子系统采用接收信号强度指示器和航位推算相结合的方法实现。障碍物检测和避免使用红外传感器来检测无人机路径上的物体，使无人机能够寻找替代路径。寻路使用了在Unity引擎中测试区域的3D模型中执行的改进的Node Array a *算法。最后，能量监测使用无人机的内置Python库来记录电压值，并被发送到Unity系统，该系统在检测到低电池电压时重新路由无人机。该系统能够提供一个基本的自主导航系统，优先考虑无人机及其飞行环境的安全。
{"title":"Automated Indoor Drone Flight with Collision Prevention","authors":"Jay Mark S. Lagmay, Lionel Jed C. Leyba, Alessandro T. Santiago, Lea B. Tumabotabo, Wilbert Jethro R. Limjoco, N. Tiglao","doi":"10.1109/TENCON.2018.8650371","DOIUrl":"https://doi.org/10.1109/TENCON.2018.8650371","url":null,"abstract":"This paper details a system that provides positioning, obstacle detection and avoidance, pathfinding, and energy monitoring suitable for indoor operation designed for the Crazyflie 2.0 drone. The positioning subsystem was achieved by a hybrid of Received Signal Strength Indicators and Dead Reckoning. Obstacle detection and avoidance used an IR sensor to detect objects in the drone’s path, allowing the drone to look for alternate paths. Pathfinding used a modified Node Array A* algorithm implemented in a 3D model of the testing area within the Unity engine. Finally, energy monitoring used the drone’s built-in Python library to log voltage values and were sent to the Unity system, which reroutes the drone upon detecting a low battery voltage. The system was able to provide a basic autonomous navigation system that prioritizes safety of the drone and its flying environment.","PeriodicalId":132900,"journal":{"name":"TENCON 2018 - 2018 IEEE Region 10 Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125943294","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 : 2018-10-01DOI: 10.1109/TENCON.2018.8650111
G. Wibisono, Yudiansyah, T. Firmansyah
Some problems that appeared in designing wideband bandpass filter (BPF) using microstrip are large size, difficult structure, the filter parameters are large and too complicated, and have narrow passband. In order to overcome some of these problems, a compact quad-wide fractional bandwidth (QW-BPF) using stub step impedance resonator with meandering structure is proposed, designed and analyzed in this paper. The proposed resonator is constructed by dual-stub step impedance resonator (DS-SIR) to produce several transmission zeros with four wide passbands and good transmission coefficients. In order to reduce the filter size, a meandering structure also was proposed. This QW-BPF achieves good transmission coefficients/ wide-fractional bandwidth of 0.59/58.36, 1.16/34.55, 1.67/16.44, and 2.43 dB/15.42% at 0.85, 1.65, 2.54, and 3.43 GHz, respectively. The experimental verification was tested and implemented practically. The simulation and measurement result has a very good agreement. The proposed QW-BPF has wide-fractional bandwidth, good transmission coefficients, ease of fabrication, and compact size. The simulated and measured reports are provided and they had good agreement.
{"title":"Compact Quad-Wideband BPF Based on Dual-Stub Step Impedance Resonator with Meandering Structure","authors":"G. Wibisono, Yudiansyah, T. Firmansyah","doi":"10.1109/TENCON.2018.8650111","DOIUrl":"https://doi.org/10.1109/TENCON.2018.8650111","url":null,"abstract":"Some problems that appeared in designing wideband bandpass filter (BPF) using microstrip are large size, difficult structure, the filter parameters are large and too complicated, and have narrow passband. In order to overcome some of these problems, a compact quad-wide fractional bandwidth (QW-BPF) using stub step impedance resonator with meandering structure is proposed, designed and analyzed in this paper. The proposed resonator is constructed by dual-stub step impedance resonator (DS-SIR) to produce several transmission zeros with four wide passbands and good transmission coefficients. In order to reduce the filter size, a meandering structure also was proposed. This QW-BPF achieves good transmission coefficients/ wide-fractional bandwidth of 0.59/58.36, 1.16/34.55, 1.67/16.44, and 2.43 dB/15.42% at 0.85, 1.65, 2.54, and 3.43 GHz, respectively. The experimental verification was tested and implemented practically. The simulation and measurement result has a very good agreement. The proposed QW-BPF has wide-fractional bandwidth, good transmission coefficients, ease of fabrication, and compact size. The simulated and measured reports are provided and they had good agreement.","PeriodicalId":132900,"journal":{"name":"TENCON 2018 - 2018 IEEE Region 10 Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125538649","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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