Jakub Lojda, Jakub Podivinsky, Z. Kotásek, Martin Krcma
{"title":"Majority Type and Redundancy Level Influences on Redundant Data Types Approach for HLS","authors":"Jakub Lojda, Jakub Podivinsky, Z. Kotásek, Martin Krcma","doi":"10.1109/BEC.2018.8600951","DOIUrl":"https://doi.org/10.1109/BEC.2018.8600951","url":null,"abstract":"Due to the increasing demand for reliable computation in environments that require electronic systems to withstand an increased occurrence of faults (e.g., space, aerospace and medicine), new techniques of the so-called Fault Tolerance insertion arise. From another perspective, today's systems have become incredibly large and complex. Methodologies like High-Level Synthesis are used to reduce time to market and simplify the verification of the resulting system. In our research we focus on an implementation of Fault Tolerance into complex systems with the usage of High-Level Synthesis. In our approach, we are using newly designed Data Types that introduce redundancy on the functional level of an algorithm. In this student paper, our previously presented technique is extended by another means of redundancy and also by a new type of voting component. The systems incorporating various levels of redundancies using our approach are experimentally tested on the application of a robot controller. The paper also briefly presents the evaluation process and investigates its correct settings. The results show that the bit-based majority function is more suitable for usage with our Redundant Data Types.","PeriodicalId":140384,"journal":{"name":"2018 16th Biennial Baltic Electronics Conference (BEC)","volume":"271 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":"123113383","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}
V. Pires, A. Cordeiro, A. Pires, J. Martins, Hao Chen
{"title":"A Multilevel Topology Based on the T-Type Converter for SRM Drives","authors":"V. Pires, A. Cordeiro, A. Pires, J. Martins, Hao Chen","doi":"10.1109/BEC.2018.8600983","DOIUrl":"https://doi.org/10.1109/BEC.2018.8600983","url":null,"abstract":"Multilevel power converters have been used in SRM drives to improve high speed operating characteristics and reduce switching frequency. Several topologies have been proposed to these drives but it requires an increased number of switches. In this paper it is presented a new multilevel topology for the SRM drives. This topology is based on the T-type structure and characterized by a reduced number of power semiconductors resulting in a low cost, size and weight system. With this topology it is possible to accelerate the magnetization and demagnetization process as well as the efficiency of the system through the reduction of the switching frequency at low speed operation. The characteristics and performance of the proposed topology will be verified through several numerical tests.","PeriodicalId":140384,"journal":{"name":"2018 16th Biennial Baltic Electronics Conference (BEC)","volume":"57 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131686845","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}
{"title":"Compact Multichannel Device for Differential Impedance Spectroscopy of Microfluidic Sensors","authors":"J. Ojarand, R. Ehrminger, M. Min, A. Koel","doi":"10.1109/BEC.2018.8600955","DOIUrl":"https://doi.org/10.1109/BEC.2018.8600955","url":null,"abstract":"Impedance spectroscopy is a common approach in assessing passive electrical properties of biological matter. However, several problems appear in microfluidic devices in connection with high sensitivity signal acquisition from small volume sensors. The developed compact analyzer provides fast impedance spectroscopy measurement from three sensors in direct and differential modes. Measurement deficiencies are minimized with optimized electronics, measurement method, signal processing and mechanical design of the analyzer. Proposed solutions are targeted to the creation of reliable point-of-care (POC) diagnostic and monitoring appliances including lab-on-a-chip type devices in next steps.","PeriodicalId":140384,"journal":{"name":"2018 16th Biennial Baltic Electronics Conference (BEC)","volume":"35 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":"131052427","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}
{"title":"Specific Signal Representation for Transmission and Processing based on Precise Event Timing","authors":"I. Bilinskis, E. Boole, I. Mednieks","doi":"10.1109/BEC.2018.8600979","DOIUrl":"https://doi.org/10.1109/BEC.2018.8600979","url":null,"abstract":"Method for signal representation based on using the signal phase at the time instant of the signal and reference function crossing events is proposed and described. Combination of the signal compressive transmission and digital processing, performed before recovery of the input signals, is described. The focus is on the application of this method for avoiding multiple multiplications of two digital variables at digital processing the signals according to the widely used algorithms. Using the described approach to signal representation and digital processing provides for a significant increase in the operational speed at the involved calculations.","PeriodicalId":140384,"journal":{"name":"2018 16th Biennial Baltic Electronics Conference (BEC)","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":"129163058","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}
Hammad Hassan, I. Ahmed, R. Ahmad, Waqas Ahmed, M. Alam
{"title":"Energy Efficiency for Bisection based Power Allocation with Proportional Fairness in Relay-assisted LTE-A Downlink System","authors":"Hammad Hassan, I. Ahmed, R. Ahmad, Waqas Ahmed, M. Alam","doi":"10.1109/BEC.2018.8600970","DOIUrl":"https://doi.org/10.1109/BEC.2018.8600970","url":null,"abstract":"LTE-A systems with Orthogonal Frequency Division Multiplexing (OFDM) based Resource Blocks (RBs) allocation flexibility offers Spectral Efficiency (SE), in the meantime Energy Efficiency (EE) has also become a critical metric for future cellular systems design. So in order to achieve EE and at the same time balance of throughput and fairness also to be ensured, we have investigated various RBs allocation schemes in LTE-A networks. Best performing among these are Hybrid proportional fairness scheme SAMM and Maximum Throughput (MT). Both these schemes are simulated with equal power allocation and with Bisection based Optimal Power Allocation (BOPA) based on water filling principle. Our proposed scheme SAMM BOPA gives 10% gain in SE and 26% power saving when compared with MT BOPA. Whereas when compared SAMM with equal power allocation to all RBs our proposed scheme gives 77% increase in EE at the cost of 6.9% decreased SE.","PeriodicalId":140384,"journal":{"name":"2018 16th Biennial Baltic Electronics Conference (BEC)","volume":"91 37 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":"128812809","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}
{"title":"Hyperspectral camera with polarized filter as modern supersensor device for cyber-physical systems","authors":"M. Jürise, A. Udal, J. Kaugerand, R. Sell","doi":"10.1109/BEC.2018.8600957","DOIUrl":"https://doi.org/10.1109/BEC.2018.8600957","url":null,"abstract":"Starting from 2008–2010, the hyperspectral cameras have become very popular supersensor devices capable to record spectral information for every pixel of the observed view field. Those cameras can be applied in numerous application fields where human eye is not able to distinguish between the different spectral signatures. The article describes measurements of natural forest background, dry hay ground, military vehicle and compares reflection of dry, wet and frozen road surfaces. As a special advanced feature, the experiments with linear polarization filter are presented and analyzed. Article offers a simple formula based analytical model of a the pine forest “700 nm red step” and “near infrared plateau”.","PeriodicalId":140384,"journal":{"name":"2018 16th Biennial Baltic Electronics Conference (BEC)","volume":"38 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":"128541022","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}
{"title":"A 200 MHz RF wireless power transfer receiver for implantable medical devices fully integrated in 130 nm CMOS","authors":"M. Potocný, M. Kovác, D. Arbet, V. Stopjaková","doi":"10.1109/BEC.2018.8600988","DOIUrl":"https://doi.org/10.1109/BEC.2018.8600988","url":null,"abstract":"This paper deals with the design of a fully integrated RF power receiver operating at 200 MHz that is intended for inductively powered implantable medical devices. The main challenge in the design of such a system is the weak coupling between the transmitter and the receiver. This results in very low receiver input power. Further restrictions caused by the use of an on-chip receiver coil include the usable frequency band, which is limited by the coil self resonance frequency. The low quality of such coils also makes the common practice of using a parallel resonance circuit to boost the rectifier input voltage less effective, resulting in low input voltage for the rectifier. Therefore, a body biasing technique was used in the rectifier to make it more effective in such conditions. Tunable capacitors were included in the resonator to make the circuit adaptable to different input conditions. The receiver was designed in a standard 130 nm CMOS technology. The effects of input voltage, power, tuning voltage and load resistance on the receiver power conversion efficiency and output power are investigated.","PeriodicalId":140384,"journal":{"name":"2018 16th Biennial Baltic Electronics Conference (BEC)","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":"130702556","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}
Mairo Leier, Gert Jervan, Ardo Allik, K. Pilt, D. Karai, I. Fridolin
{"title":"Fall detection and activity recognition system for usage in smart work-wear","authors":"Mairo Leier, Gert Jervan, Ardo Allik, K. Pilt, D. Karai, I. Fridolin","doi":"10.1109/BEC.2018.8600959","DOIUrl":"https://doi.org/10.1109/BEC.2018.8600959","url":null,"abstract":"Human activity measurement and classification has been hot research topic for several years. Most of the solutions are based on the mobile phones, however there are also some wearable device implementations that have very specific functionality. The aim of this paper is to propose a human activity recognition and fall detection solution that provides extra safety for people working in challenging conditions. The system is integrated with the monitoring solution that provides real-time information about all workers and raises automatically an alarm in case of accidents or abnormal conditions.","PeriodicalId":140384,"journal":{"name":"2018 16th Biennial Baltic Electronics Conference (BEC)","volume":"21 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":"130788609","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}
{"title":"Performance comparison of smartphones and a wearable motion sensor for patient m-assessment","authors":"T. Kask, A. Kuusik","doi":"10.1109/BEC.2018.8600973","DOIUrl":"https://doi.org/10.1109/BEC.2018.8600973","url":null,"abstract":"Wearable motion sensors are successfully used for human gait and mobility analysis. They are based on inertial measurement units (IMUs) that can successfully replace 3D camera systems and be used outside clinical environments for patient teleassessment. Modern smartphones with increasing computational power include IMUs similar to ones available in the professional clinical motion sensors. That raises a question whether a conventional smartphone can be used for clinical grade body motion analysis instead of dedicated wearable sensors. This article compares the motion measurement accuracy of two conventional smartphones (Samsung S8 Edge and iPhone 6) and a dedicated wearable sensor used in previous clinical trials. Performance analysis towards two specific clinical tests - Romberg and range of motion (ROM) test were conducted.","PeriodicalId":140384,"journal":{"name":"2018 16th Biennial Baltic Electronics Conference (BEC)","volume":"16 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":"120948702","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}
{"title":"Numerical Simulation of P-Type Al/4H-SiC Schottky Barrier diodes","authors":"Mehadi Hasan Ziko, A. Koel, Toomas Rangs","doi":"10.1109/BEC.2018.8600976","DOIUrl":"https://doi.org/10.1109/BEC.2018.8600976","url":null,"abstract":"Wide-bandgap (WBG) power semiconductor devices have good potential to replace Silicon-based devices for operating at higher temperatures. Silicon carbide (SiC) currently represents an established WBG candidate for developing power Schottky barrier diodes (SBD) used in power electronics that are required for the next generation power devices. Very few information is available about P-type 4H-SiC substrate being used for realization of SBD. Pre-production Technological computer aided design (TCAD) simulation of SBD, where p-doped epitaxial layer on p-type 4H-SiC substrate corresponds to experimental structures (currently in manufacturing process) could generate defects under the contact. P-type SiC SBD with some defects types is also examined for evaluating the influence on the forward current and reverse voltage blocking. Forward and reverse bias static characteristics are obtained for p-type 4H-SiC SBD at temperatures in the range of 300K to 600K. The currents are shown to have a large on resistance and tunneling component depending on the defects. The SBD device simulation shows that there is significant impact on the reverse current and voltage despite of the very thin defective layer. The reverse breakdown voltages of the diodes were found to decrease from several hundred volts to -100 V indicating the presence of defects edge leakage currents. The structural properties and characteristics of the resulting defects in the schottky contact layer are discussed.","PeriodicalId":140384,"journal":{"name":"2018 16th Biennial Baltic Electronics Conference (BEC)","volume":"13 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":"128634571","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}