Pub Date : 2020-05-01DOI: 10.1109/DAS49615.2020.9108940
Eduard Zadobrischi, M. Negru
With the expansion of accessibility and availability of personal cars towards the population, the environment, road safety, and pedestrian safety faces greater problems. The neediest for the management of information through autonomous systems dedicated to pedestrian detection and improvement of analysis and road prevention algorithms is an important factor addressed in this paper. The purpose of this paper is to demonstrate and propose viable solutions that will help drivers to practice an efficient, safe, and event-free driving style. This paper presents a prototype under development that can avoid various traffic events, the system analyzing, and alerting the driver regarding pedestrian intentions, marking each detection separately according to the degree of danger that it constitutes for both the driver, as well as for pedestrians. This research analyzes and emphasizes that at this point everything is already focused on the paradigm from which it is possible for all these technologies to cooperate in a hybrid platform, offering a real solution to the demands of human users but also of IoT solutions.
{"title":"Pedestrian detection based on TensorFlow YOLOv3 embedded in a portable system adaptable to vehicles","authors":"Eduard Zadobrischi, M. Negru","doi":"10.1109/DAS49615.2020.9108940","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108940","url":null,"abstract":"With the expansion of accessibility and availability of personal cars towards the population, the environment, road safety, and pedestrian safety faces greater problems. The neediest for the management of information through autonomous systems dedicated to pedestrian detection and improvement of analysis and road prevention algorithms is an important factor addressed in this paper. The purpose of this paper is to demonstrate and propose viable solutions that will help drivers to practice an efficient, safe, and event-free driving style. This paper presents a prototype under development that can avoid various traffic events, the system analyzing, and alerting the driver regarding pedestrian intentions, marking each detection separately according to the degree of danger that it constitutes for both the driver, as well as for pedestrians. This research analyzes and emphasizes that at this point everything is already focused on the paradigm from which it is possible for all these technologies to cooperate in a hybrid platform, offering a real solution to the demands of human users but also of IoT solutions.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131176699","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 : 2020-05-01DOI: 10.1109/DAS49615.2020.9108925
Meng Wang, Wenjun Wu, Yu Liang
The goal of this paper is to propose the concept, structure and implementation of a novel intelligent tutoring system designed for beginners in C language and Python. The system is implemented by adding the functions of code classification, program error repair and personal knowledge tracing to an online programming practice platform. This implementation makes the original platform become more intelligent and help students learn programming better.
{"title":"A Novel Intelligent Tutoring System For Learning Programming","authors":"Meng Wang, Wenjun Wu, Yu Liang","doi":"10.1109/DAS49615.2020.9108925","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108925","url":null,"abstract":"The goal of this paper is to propose the concept, structure and implementation of a novel intelligent tutoring system designed for beginners in C language and Python. The system is implemented by adding the functions of code classification, program error repair and personal knowledge tracing to an online programming practice platform. This implementation makes the original platform become more intelligent and help students learn programming better.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122392620","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 : 2020-05-01DOI: 10.1109/DAS49615.2020.9108930
I. Zagan, V. Gaitan
The design of an RTOS (real-time operation system) kernel is mostly based on a preemptive scheduler that responds to events and interrupts according to the priorities. The hardware RTOS (HW-RTOS) concept includes a real-time scheduler which ensures a deterministic execution of a set of tasks by implementing in hardware the appropriate scheduling algorithms, similar to those of the RTOS. The contributions of this paper consist in presenting original methods that contribute to increasing the performance of the RTOS, to reduce the jitter effect by implementing a unified space of task and event priorities, to increase the execution factor and controlling the RTS (real-time system) scheduling limit, by implementing the real-time event handling unit.
{"title":"Improving the performance of Real-Time Event Processing based on Preemptive Scheduler FPGA Implementation","authors":"I. Zagan, V. Gaitan","doi":"10.1109/DAS49615.2020.9108930","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108930","url":null,"abstract":"The design of an RTOS (real-time operation system) kernel is mostly based on a preemptive scheduler that responds to events and interrupts according to the priorities. The hardware RTOS (HW-RTOS) concept includes a real-time scheduler which ensures a deterministic execution of a set of tasks by implementing in hardware the appropriate scheduling algorithms, similar to those of the RTOS. The contributions of this paper consist in presenting original methods that contribute to increasing the performance of the RTOS, to reduce the jitter effect by implementing a unified space of task and event priorities, to increase the execution factor and controlling the RTS (real-time system) scheduling limit, by implementing the real-time event handling unit.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132099122","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 : 2020-05-01DOI: 10.1109/DAS49615.2020.9108974
M. Nicola, C. Nicola, D. Sacerdoțianu
This article presents the sensorless control system of a PMSM (Permanent Magnet Synchronous Motor) based on the DTC (Direct Torque Control) control strategy, where the speed controller is of ILC (Iterative Learning Control) type. This control system is recommended in case of the repetitive tasks performed by the PMSM control system. Also, the superiority of the ILC controller leads to good performance if the load torque (considered as a disturbing signal for the speed control system) has an oscillating variation. In order to increase the reliability of the control system, the speed sensor is replaced with a MRAS (Model Reference Adaptive System) speed observer. The article presents the equations of the PMSM, of the control system, of the observer and the implementation in Matlab/Simulink. The results obtained are presented comparatively for PI, PI-ILC law speed controllers. The superior performance and the parametric robustness are noted for the PI-ILC law speed controller. Based on the results obtained through numerical simulations, the implementation in embedded systems is recommended, in future papers.
{"title":"Sensorless Control of PMSM using DTC Strategy Based on PI-ILC Law and MRAS Observer","authors":"M. Nicola, C. Nicola, D. Sacerdoțianu","doi":"10.1109/DAS49615.2020.9108974","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108974","url":null,"abstract":"This article presents the sensorless control system of a PMSM (Permanent Magnet Synchronous Motor) based on the DTC (Direct Torque Control) control strategy, where the speed controller is of ILC (Iterative Learning Control) type. This control system is recommended in case of the repetitive tasks performed by the PMSM control system. Also, the superiority of the ILC controller leads to good performance if the load torque (considered as a disturbing signal for the speed control system) has an oscillating variation. In order to increase the reliability of the control system, the speed sensor is replaced with a MRAS (Model Reference Adaptive System) speed observer. The article presents the equations of the PMSM, of the control system, of the observer and the implementation in Matlab/Simulink. The results obtained are presented comparatively for PI, PI-ILC law speed controllers. The superior performance and the parametric robustness are noted for the PI-ILC law speed controller. Based on the results obtained through numerical simulations, the implementation in embedded systems is recommended, in future papers.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"2003 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125768808","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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