Pub Date : 2014-06-15DOI: 10.1109/MECO.2014.6862704
A. Ivutin, E. Larkin
A semi-Markov process, as a model of interpretation of an algorithm by embedded controller is considered. Generation of transactions in digital controllers as a result of random wandering on states of semi-Markov process is described. Mathematical expressions for evaluation of stochastic characteristics and time lag densities between transactions are obtained. Latencies between transactions is considered as an important parameter for proper synthesis of control algorithms in real-time embedded digital control systems.
{"title":"Estimation of latency in embedded real-time systems","authors":"A. Ivutin, E. Larkin","doi":"10.1109/MECO.2014.6862704","DOIUrl":"https://doi.org/10.1109/MECO.2014.6862704","url":null,"abstract":"A semi-Markov process, as a model of interpretation of an algorithm by embedded controller is considered. Generation of transactions in digital controllers as a result of random wandering on states of semi-Markov process is described. Mathematical expressions for evaluation of stochastic characteristics and time lag densities between transactions are obtained. Latencies between transactions is considered as an important parameter for proper synthesis of control algorithms in real-time embedded digital control systems.","PeriodicalId":416168,"journal":{"name":"2014 3rd Mediterranean Conference on Embedded Computing (MECO)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125730910","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 : 2014-06-15DOI: 10.1109/MECO.2014.6862676
Christina K. Houben, W. Halang
Based on the Earliest Deadline First policy guaranteeing timeliness for hard real-time systems, we propose an enhanced EDF algorithm that varies distinct processor modes with time. Processor modes are determined by supply voltage, frequency and performance requirements, allowing for discrete control of the processors' energy consumption. Thus, processors using the enhanced policy will dissipate less energy and, at the same time, adhere to the deadlines of hard real-time systems.
{"title":"An energy-aware dynamic scheduling algorithm for hard real-time systems","authors":"Christina K. Houben, W. Halang","doi":"10.1109/MECO.2014.6862676","DOIUrl":"https://doi.org/10.1109/MECO.2014.6862676","url":null,"abstract":"Based on the Earliest Deadline First policy guaranteeing timeliness for hard real-time systems, we propose an enhanced EDF algorithm that varies distinct processor modes with time. Processor modes are determined by supply voltage, frequency and performance requirements, allowing for discrete control of the processors' energy consumption. Thus, processors using the enhanced policy will dissipate less energy and, at the same time, adhere to the deadlines of hard real-time systems.","PeriodicalId":416168,"journal":{"name":"2014 3rd Mediterranean Conference on Embedded Computing (MECO)","volume":"237 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125971379","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 : 2014-06-15DOI: 10.1109/MECO.2014.6862709
Ashray A. Doshi, A. Postula, Surya P. N. Singh, A. Fletcher
Micro-UAVs (Unmanned Aerial Vehicles) attract much interest in a wide range of commercial applications. Due to small size, very limited power and susceptibility to wind their design poses difficult problems in control and motion planning. FPGA technology allows integration of high speed control circuits with efficient hardware implementations of complex algorithms on the same reconfigurable hardware chip. This is a very attractive option for implementation of a micro-UAV computing platform. This paper presents development of control platform for micro-UAVs focusing on integration of lower level control with online motion planning in wind. Some aspects of tight integration of on-board optical sensors with the aircraft control system are also discussed.
{"title":"Development of control platform for micro-UAVs with integrated motion planning in wind","authors":"Ashray A. Doshi, A. Postula, Surya P. N. Singh, A. Fletcher","doi":"10.1109/MECO.2014.6862709","DOIUrl":"https://doi.org/10.1109/MECO.2014.6862709","url":null,"abstract":"Micro-UAVs (Unmanned Aerial Vehicles) attract much interest in a wide range of commercial applications. Due to small size, very limited power and susceptibility to wind their design poses difficult problems in control and motion planning. FPGA technology allows integration of high speed control circuits with efficient hardware implementations of complex algorithms on the same reconfigurable hardware chip. This is a very attractive option for implementation of a micro-UAV computing platform. This paper presents development of control platform for micro-UAVs focusing on integration of lower level control with online motion planning in wind. Some aspects of tight integration of on-board optical sensors with the aircraft control system are also discussed.","PeriodicalId":416168,"journal":{"name":"2014 3rd Mediterranean Conference on Embedded Computing (MECO)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131377083","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 : 2014-06-15DOI: 10.1109/MECO.2014.6862678
Sergey V. Chelebaev, Yulia A. Chelebaeva
Converters synthesis pocedures of time-and-frequency signals parameters in a digital code of two variables on the example of the perceptron networks application are developed. Converters structure of time-and-frequency signals parameters in a digital unitary code of two variables on a basis two-layer perceptron is respectively constructed. The network training example of the frequency converter in a unitary code of two variables on the two-layer perceptron basis is given.
{"title":"Two variables time-and-frequency signals parameters in a digital code neural network converters synthesis procedure on the perceptrons basis","authors":"Sergey V. Chelebaev, Yulia A. Chelebaeva","doi":"10.1109/MECO.2014.6862678","DOIUrl":"https://doi.org/10.1109/MECO.2014.6862678","url":null,"abstract":"Converters synthesis pocedures of time-and-frequency signals parameters in a digital code of two variables on the example of the perceptron networks application are developed. Converters structure of time-and-frequency signals parameters in a digital unitary code of two variables on a basis two-layer perceptron is respectively constructed. The network training example of the frequency converter in a unitary code of two variables on the two-layer perceptron basis is given.","PeriodicalId":416168,"journal":{"name":"2014 3rd Mediterranean Conference on Embedded Computing (MECO)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128340707","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 : 2014-06-15DOI: 10.1109/MECO.2014.6862718
Shkumbin Fida, B. Çiço, Agon Memeti
Sharing the computational resources for laboratory needs is not an easy task. Most of educational institutions are following traditional approach to configure their laboratories. Doing so, they are force to lock and bind a single technology to a dedicated laboratory. The proposed service oriented resource sharing platform is trying to avoid this problem and at the same time is trying to elevate the lab configuration on the next level. The platform design offers flexible computational lab resource sharing scenarios while computational resources are shared as a template service based on course criteria requirements. The proposed platform delivers flexibility, convergence and empowers user experience while the platform architecture design offers scalable computational resource sharing model. Sharing computational resources as a template service allows similar courses to collaborate with each other using and sharing the same computational resources simultaneously.
{"title":"Resource sharing platform architecture — Service oriented design lab environment","authors":"Shkumbin Fida, B. Çiço, Agon Memeti","doi":"10.1109/MECO.2014.6862718","DOIUrl":"https://doi.org/10.1109/MECO.2014.6862718","url":null,"abstract":"Sharing the computational resources for laboratory needs is not an easy task. Most of educational institutions are following traditional approach to configure their laboratories. Doing so, they are force to lock and bind a single technology to a dedicated laboratory. The proposed service oriented resource sharing platform is trying to avoid this problem and at the same time is trying to elevate the lab configuration on the next level. The platform design offers flexible computational lab resource sharing scenarios while computational resources are shared as a template service based on course criteria requirements. The proposed platform delivers flexibility, convergence and empowers user experience while the platform architecture design offers scalable computational resource sharing model. Sharing computational resources as a template service allows similar courses to collaborate with each other using and sharing the same computational resources simultaneously.","PeriodicalId":416168,"journal":{"name":"2014 3rd Mediterranean Conference on Embedded Computing (MECO)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130620681","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 : 2014-06-15DOI: 10.1109/MECO.2014.6862657
Fang Lu, W. Rao, Yan Dong
Binary input compressive sensing (BiCS) is the kernel of seamless rate adaptation system. But the high complexity of the decoding algorithms has prevented this technique from being applied to practical communication systems. In this paper, a decoder with serial architecture is proposed and implemented in FPGA. Two specific optimizations are employed to improve the throughput of the decoder. First, we take advantage of the configurable aspect ratio of the block RAM in FPGA to make the decoder work fully pipelined. Second, the ping pang operation is adopted to increase the hardware utilization efficiency. When the clock frequency is 300MHz and the number of iterations is 10, the maximum throughput of the decoder is about 29.4Mbps that reaches the range of communication rate in modern wireless networks.
{"title":"FPGA-based implementation of binary input compressive sensing decoder","authors":"Fang Lu, W. Rao, Yan Dong","doi":"10.1109/MECO.2014.6862657","DOIUrl":"https://doi.org/10.1109/MECO.2014.6862657","url":null,"abstract":"Binary input compressive sensing (BiCS) is the kernel of seamless rate adaptation system. But the high complexity of the decoding algorithms has prevented this technique from being applied to practical communication systems. In this paper, a decoder with serial architecture is proposed and implemented in FPGA. Two specific optimizations are employed to improve the throughput of the decoder. First, we take advantage of the configurable aspect ratio of the block RAM in FPGA to make the decoder work fully pipelined. Second, the ping pang operation is adopted to increase the hardware utilization efficiency. When the clock frequency is 300MHz and the number of iterations is 10, the maximum throughput of the decoder is about 29.4Mbps that reaches the range of communication rate in modern wireless networks.","PeriodicalId":416168,"journal":{"name":"2014 3rd Mediterranean Conference on Embedded Computing (MECO)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134129723","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 : 2014-06-15DOI: 10.1109/MECO.2014.6862708
Y. Bekhtin, V. Gurov, M. Guryeva
The new algorithm for infrared (IR) image enhancement compensating fixed pattern noise (FPN) of the volt sensitivity in IR un-cooled sensors is described. The main idea of the algorithm lies in the presentation of any input image as the set of calibrating segments. The segmentation procedure uses the texture homogeneity levels and the estimators of the transfer coefficients calculated within each level. The results of modeling have shown the advantage of the proposed algorithm comparing with well-known 2-point FPN correction procedures under PSNR and SSIM criteria.
{"title":"Algorithmic supply of IR sensors with FPN using texture homogeneity levels","authors":"Y. Bekhtin, V. Gurov, M. Guryeva","doi":"10.1109/MECO.2014.6862708","DOIUrl":"https://doi.org/10.1109/MECO.2014.6862708","url":null,"abstract":"The new algorithm for infrared (IR) image enhancement compensating fixed pattern noise (FPN) of the volt sensitivity in IR un-cooled sensors is described. The main idea of the algorithm lies in the presentation of any input image as the set of calibrating segments. The segmentation procedure uses the texture homogeneity levels and the estimators of the transfer coefficients calculated within each level. The results of modeling have shown the advantage of the proposed algorithm comparing with well-known 2-point FPN correction procedures under PSNR and SSIM criteria.","PeriodicalId":416168,"journal":{"name":"2014 3rd Mediterranean Conference on Embedded Computing (MECO)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132044350","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 : 2014-06-15DOI: 10.1109/MECO.2014.6862681
A. Lin, Aleksander Milshteyn, G. Herman, Manuel García, Charles Liu, K. Rad, D. Guillaume, H. Boussalis
Previously, Hybrid-Routing Algorithm Model was proposed by the Structures, Pointing, and Control Engineering (SPACE) University Research Center1 at California State University of Los Angeles (CSULA). The Hybrid-Routing Algorithm Model utilizes semi-autonomous control during robotic operations in unknown, remote, hazardous, or otherwise inaccessible terrains. In order to observe and monitor mobile robot's surroundings, an onboard virtual reality system has been designed and implemented. It operates by remotely following the commanded movement of the robotic mission operator's headset. The proposed design features the Inertial Measurement Unit (IMU) chip secured to the center of the iTV-goggles unit., which is worn by the robotic mission operator. Direction cosine matrix algorithm is used to update the body coordinates of the IMU chip to the global reference system. Euler angles are computed based on the angular orientation of the mission operator's headset and are transmitted to the mobile robot. The observation system contains multiple servo motors that rotate onboard camera based on the received pitch roll, and yaw information. The observation system transmits compressed visual information of robot's surroundings to the Host Computing Station. This video is rendered via iTV-goggles display to the mission operator.
{"title":"Virtual reality head-tracking observation system for mobile robot","authors":"A. Lin, Aleksander Milshteyn, G. Herman, Manuel García, Charles Liu, K. Rad, D. Guillaume, H. Boussalis","doi":"10.1109/MECO.2014.6862681","DOIUrl":"https://doi.org/10.1109/MECO.2014.6862681","url":null,"abstract":"Previously, Hybrid-Routing Algorithm Model was proposed by the Structures, Pointing, and Control Engineering (SPACE) University Research Center1 at California State University of Los Angeles (CSULA). The Hybrid-Routing Algorithm Model utilizes semi-autonomous control during robotic operations in unknown, remote, hazardous, or otherwise inaccessible terrains. In order to observe and monitor mobile robot's surroundings, an onboard virtual reality system has been designed and implemented. It operates by remotely following the commanded movement of the robotic mission operator's headset. The proposed design features the Inertial Measurement Unit (IMU) chip secured to the center of the iTV-goggles unit., which is worn by the robotic mission operator. Direction cosine matrix algorithm is used to update the body coordinates of the IMU chip to the global reference system. Euler angles are computed based on the angular orientation of the mission operator's headset and are transmitted to the mobile robot. The observation system contains multiple servo motors that rotate onboard camera based on the received pitch roll, and yaw information. The observation system transmits compressed visual information of robot's surroundings to the Host Computing Station. This video is rendered via iTV-goggles display to the mission operator.","PeriodicalId":416168,"journal":{"name":"2014 3rd Mediterranean Conference on Embedded Computing (MECO)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114463802","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 : 2014-06-15DOI: 10.1109/MECO.2014.6862671
V. Gurov, Y. Muratov, M. Nikiforov
Diverse images combination in aircraft onboard technical vision systems (TVS) issue is inaccurate determination of aircraft coordinates and TVS sensors positioning angles with incomplete synthesized images object structure. Existing algorithms cannot perform images combination in a reasonable time or cannot reach required accuracy. Pitch and roll angles definition errors lead to essential discrepancy of images combination based on navigation data only. Using pitch and roll angles accurate values allow to reduce computational costs of images combination by six parameters.
{"title":"Diverse images combination by pitch and roll angles","authors":"V. Gurov, Y. Muratov, M. Nikiforov","doi":"10.1109/MECO.2014.6862671","DOIUrl":"https://doi.org/10.1109/MECO.2014.6862671","url":null,"abstract":"Diverse images combination in aircraft onboard technical vision systems (TVS) issue is inaccurate determination of aircraft coordinates and TVS sensors positioning angles with incomplete synthesized images object structure. Existing algorithms cannot perform images combination in a reasonable time or cannot reach required accuracy. Pitch and roll angles definition errors lead to essential discrepancy of images combination based on navigation data only. Using pitch and roll angles accurate values allow to reduce computational costs of images combination by six parameters.","PeriodicalId":416168,"journal":{"name":"2014 3rd Mediterranean Conference on Embedded Computing (MECO)","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134642261","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 : 2014-06-15DOI: 10.1109/MECO.2014.6862692
S. M. Perovich, M. Ćalasan, R. Dragovic-Ivanovic
The subject of the theoretical analysis presented in this article is obtaining formulae for current in the RC diode nonlinear circuit by using the Special trans functions theory (STFT). Namely, the modified Lambert nonlinear functional equation which describes the current in RC diode circuit is solved analytically in closed form (a novel special tran function, tranLD(R, C, T, i (0)), and, also, is solved by using an advanced iterative procedure within STF theory. Structure of the STFT solutions, numerical results and graphical simulations confirm the validity of the basic principle of the STFT.
{"title":"Concerning current STFT estimations to the RC diode circuit","authors":"S. M. Perovich, M. Ćalasan, R. Dragovic-Ivanovic","doi":"10.1109/MECO.2014.6862692","DOIUrl":"https://doi.org/10.1109/MECO.2014.6862692","url":null,"abstract":"The subject of the theoretical analysis presented in this article is obtaining formulae for current in the RC diode nonlinear circuit by using the Special trans functions theory (STFT). Namely, the modified Lambert nonlinear functional equation which describes the current in RC diode circuit is solved analytically in closed form (a novel special tran function, tranLD(R, C, T, i (0)), and, also, is solved by using an advanced iterative procedure within STF theory. Structure of the STFT solutions, numerical results and graphical simulations confirm the validity of the basic principle of the STFT.","PeriodicalId":416168,"journal":{"name":"2014 3rd Mediterranean Conference on Embedded Computing (MECO)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127261360","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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