B. Medgyes, B. Illés, O. Krammer, S. Tzanova, S. Gavra
{"title":"Curriculum and Training Development in the METIS project","authors":"B. Medgyes, B. Illés, O. Krammer, S. Tzanova, S. Gavra","doi":"10.1109/siitme53254.2021.9663582","DOIUrl":"https://doi.org/10.1109/siitme53254.2021.9663582","url":null,"abstract":"To improve its competitiveness, the EU microelectronics area needs to overcome critical skills deficits. In this context, METIS (MicroElectronics Training, Industry and Skills) gives an individual European partnership establishing a sustainable structure to: analyze main global biases effecting on the area and offer strategic insights and foresights, predict rising skills demands, identify job rules/jobs of the future, determine important occupational profiles and observe progress in the domain of human capital for microelectronics, develop a Sector Skills Strategy to support the global leadership of the EU microelectronics industry, establishing operational linkages between skills and the future of the area, federate European synergies towards the needs of data-driven technologies such as artificial intelligence (AI) enabled by advanced microelectronics and its skills demands, establish an EU Microelectronics Observatory & Skills Council, plan and produce a modular and blended curriculum, integrating work-oriented learning that uses open education resources (OER), pave the way for the pan-European recognition of innovative Vocational Education and Training (VET), use innovative tools such as industry mentoring to facilitate inter-generational transfer of knowledge in the area, embed social (diversity & inclusion) and environmental sustainability (circular economy) subjects and EU policy aims in the development of workforce.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126807775","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":"Investigation on Meandered Split Ring Resonator for Metamaterial Microwave Absorber Design","authors":"I. Mocanu","doi":"10.1109/SIITME53254.2021.9663630","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663630","url":null,"abstract":"In this paper, the classical Split Ring Resonator (SRR), which consists of an inner and outer ring is modified to achieve different lengths of the inner ring. This can be done by using a meandered inner ring. This newly proposed SRR unit cell is investigated at 7 GHz and is implemented in microstrip technology on an absorber substrate, SB 1011. The unit cell is excited by two transmission lines and the insertion loss is evaluated for different values of the inner ring’s length. The transfer characteristic shows that the best results are obtained for a length of 6 mm and that this type of unit cell can be used for designing a microwave absorber with enhanced performances, for 5G applications.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130739246","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}
N. Thielen, Zonghan Jiang, K. Schmidt, Reinhardt Seidel, C. Voigt, A. Reinhardt, Joerg Franke
{"title":"Clustering of Image Data to Enhance Machine Learning Based Quality Control in THT Manufacturing","authors":"N. Thielen, Zonghan Jiang, K. Schmidt, Reinhardt Seidel, C. Voigt, A. Reinhardt, Joerg Franke","doi":"10.1109/SIITME53254.2021.9663663","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663663","url":null,"abstract":"In this work, machine learning (ML) models are presented to identify false calls during quality control with automated optical inspection (AOI) in through hole technology (THT) manufacturing. While ML-based approaches with both, image data and numerical data, have already been investigated extensively in SMT manufacturing due to the higher market share, research for THT manufacturing does not have the same extend [1]. The presented models classify images into false calls and true defects, which were identified by the AOI as defects beforehand. Since the AOI uses different test routines to control pin, meniscus and foil of the different components and the board’s surface, multiple models for groups of images are developed to achieve better performance than a single one. To assign the images to the corresponding models, clustering of image data is done in two steps. First, the dataset is divided into subcategories based on the supplementary and descriptive data on the test routine. Second, the unsupervised machine learning algorithm k-means is used on images in each subgroup for further assignment to a dataset. A cumulative examination of the results of different convolutional neural networks (CNN) on the individual clusters leads to a relative improvement in false call detection of 6.8% while error slip can be reduced from 0.6% to 0% in an independent test data set, which is not used for model training.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125504027","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}
A. Borodzhieva, Ivanka D. Tsvetkova, S. Zaharieva, Dimitar Dimitrov, V. Mutkov
{"title":"Inquiry-Based Learning Used for Implementation of BCD Adders in the Course \"Digital Electronics\"","authors":"A. Borodzhieva, Ivanka D. Tsvetkova, S. Zaharieva, Dimitar Dimitrov, V. Mutkov","doi":"10.1109/SIITME53254.2021.9663683","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663683","url":null,"abstract":"The paper illustrates the application of inquiry-based learning for implementing BCD (Binary-Coded Decimal) adders studied in the course \"Digital Electronics\" in the University of Ruse as a way of teaching this topic making the classes more attractive to the students using active learning methods. Single-, two-, three-, and four-digit BCD adders were implemented with different computer-based tools, such as Microsoft Excel, Logisim, and ISE (Integrated Synthesis Environment) Project Navigator. Using this approach in the training process makes the classes more attractive and the students’ final assessment more effective. Students investigate the theoretical problems in advance based on the \"flipped classroom\" approach, and then using various computer-based tools students can implement and test the devices with lab-boards developed in the University of Ruse and based on FPGA (Field-Programmable Gate Arrays).","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117284075","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":"Application of Software for the Purpose of Enhancing Online Education","authors":"Ivanka D. Tsvetkova, A. Borodzhieva","doi":"10.1109/SIITME53254.2021.9663699","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663699","url":null,"abstract":"Last year everything was changed, education was no exception. The exercises in the discipline \"Mobile Cellular Networks\" needed to be done online due to the COVID-19 pandemic. This provoked the lecturer to use software to give students the opportunity to do exercises alone. MATLAB was chosen for a software program. The paper presents the features of the software products used in the transition to online training in the discipline \"Mobile Cellular Networks\", one of the topics covered in the course, and the opinion of the students about the teaching methodologies applied in the educational process.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115149718","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}
Ciprian Orhei, Lucian Radu, M. Mocofan, Silviu Vert, R. Vasiu
{"title":"CBIR for urban building using A-KAZE features","authors":"Ciprian Orhei, Lucian Radu, M. Mocofan, Silviu Vert, R. Vasiu","doi":"10.1109/SIITME53254.2021.9663587","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663587","url":null,"abstract":"Content based image retrieval systems are an active research topic in the Computer Vision domain. These systems are important when dealing with urban environment augmented reality applications like building landmarks recognition, tourism storytelling, cultural heritage and so on. In this paper we propose a content-based image retrieval system that handles recognizing buildings from an urban scenario using only visual cues. The system use a Bag of Features feature descriptor framework and, for extracting points of interest, image features. The proposed system is a natural step forward as Bag of Features or A-KAZE both have shown good results in other applications. To evaluate our proposed system, we have used the popular dataset, ZuBuD, where we obtained a 99% accuracy in detection.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114390957","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":"Electronic Module for Control of Energy Source","authors":"I. Stoev, S. Zaharieva, A. Borodzhieva","doi":"10.1109/siitme53254.2021.9663599","DOIUrl":"https://doi.org/10.1109/siitme53254.2021.9663599","url":null,"abstract":"The paper presents an electronic device to control a heat source as part of a system for the management of energy flows in residential premises. The designed system incorporates an energy model that calculates the energy flow through the surrounding walls of the room. The algorithm calculates the point of switching on or switching off the energy source, considering the mass and the required energy to make the temperature to a certain point. The power of the energy source can be regulated from 1 kW to 6 kW in steps of 1 kW. The module for control of energy source is developed based on the ESP8266 system on chip and connects to a predefined WiFi network. MQTT broker is used for communication between the system for management of energy flows and the module for control of energy source. The module subscribes to predefined topics and they are used to send the commands.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132809831","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":"Mathematical Modeling of Resistance of Conductive Adhesive Joints in Climatic Aging","authors":"P. Mach, Robert Lacina","doi":"10.1109/SIITME53254.2021.9663585","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663585","url":null,"abstract":"The use of electrically conductive adhesives in electronics is still growing. As the number of applications of these materials grows, so does the spectrum of requirements for their properties. The most commonly used types of these adhesives are epoxy resin adhesives filled with silver flakes. One of the main disadvantages of these materials against lead-free solders is their low resistance to climatic stress. Therefore, for some applications, it must be tested for climate aging. Tests are most often performed at elevated temperature and elevated relative humidity. The article is focused on the calculation of mathematical models for the calculation of the resistance of adhesive joints from adhesives of four manufacturers made on pads with Cu and Ag surface finish. Aging is performed in a combined climate of elevated humidity / elevated temperature. Factor experiment technique was used to calculate the models. The created models showed good agreement with the measured data.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134232472","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":"On Flight Real Time Image Processing by Drone Equipped with Raspberry Pi4","authors":"L. Szolga","doi":"10.1109/SIITME53254.2021.9663650","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663650","url":null,"abstract":"This paper presents an innovative solution for image processing, especially object and person detection, using a drone. Compared to previous implementations that relied on a good network connection for good functionality, in my case the processing/detection will be done locally using a Raspberry Pi4 module, mounted on the drone. The first part of our research consisted of building a lightweight drone with some of the best racing components, chosen carefully for our specific needs. The second part consisted of implementing a computationally-low-cost detection algorithm on the Raspberry Pi, using convolutional neural networks and Tensorflow Lite. The chosen algorithm that was used was SSD - Single Shot Detection, capable of detecting multiple objects in one image during one iteration of the algorithm. I also designed an enclosure to securely place the drone battery, Raspberry Pi Battery and Raspberry Pi module on the drone, which was 3D printed.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133171791","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}
G. Vărzaru, Razvan Ungurelu, M. Branzei, B. Mihailescu, C. Ionescu, P. Svasta
{"title":"Vibration Testing of a Solderless Electronic Module Manufactured by Additive Technique","authors":"G. Vărzaru, Razvan Ungurelu, M. Branzei, B. Mihailescu, C. Ionescu, P. Svasta","doi":"10.1109/SIITME53254.2021.9663595","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663595","url":null,"abstract":"A new way of additively manufacturing electronic modules without the use of solder alloy was proposed. The result is a solid body consisting of superimposed layers of resin embedding electronic components interconnected by an electrically conductive material. Its stated purpose is to increase the reliability of electronics, but due to the novelty of the process, few papers are known to approach the subject. The paper is the first experimental study of the behavior of such a structure subject to mechanical stress. As known, the most common mechanical stress for electronics is vibration, but its parameters are different depending on the industry (aerospace, automotive, military, etc.). Regarding the vibration test, there are several types according to the purpose: performance, endurance, shipping. Our experiments were based on a well-known standard, MIL-STD-202G. The test module is a flat rectangular board made of two layers of epoxy resin embedding electronic components interconnected in a daisy-chain circuit. Tests and measurements (optical inspection, electrical continuity) were made before, during, and after vibrations. The lack of visible damage and undetectable interruption of the electrical circuitry is proof of the robustness of such structure when submitted to the recommended procedure from the Method 201A of the specified standard.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123510548","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}