13 research outputs found

    Smart Home Solutions Using Wi-Fi-based Hardware

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    Home automation technology has been increasingly important in our lives, since it offers numerous advantages, e.g., greater comfort, safety, security and energy efficiency. A smart home automation system usually includes a central computer with deployed home automation software and several distributed sensors and actuators. Wired connections between a central computer and sensor/actuator nodes are already well established, however, wireless solutions are an emerging trend. This work addresses smart home automation solutions that are based on wireless Wi-Fi network. Such solutions enable an upgrade of an existing house into a smart house without modifications of hardware installations. The article includes an overview of related works in this research field, and a case study of cost effective home automation solution that is based on open source home automation software and wireless, custom developed, Wi-Fi based hardware

    دراسة لقياس تراكيز الغازات ضعيفة التركيز باستخدام حساس MQ-2

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       قمنا في هذا البحث بدراسة تمكننا من حساب عدد جزئيات غاز بدلالة جهد مخرج حساس الغاز MQ-2  حيث يستطيع الحساس MQ-2 استشعار عدد من الغازات مثل: (أحادي أكسيد الكربون CO، النفط المسال LPG،  الميثان CH4، الدخان Smoke، الكحول Alcohol، الهيدروجين H2 ، البروبان C3H8) في الوسط المحيط به.     إن لحساس الغاز مقاومة تتغير قيمتها حسب تركيز الغاز ويتغير تبعاً لذلك جهد مخرج ذلك الحساس ولكن القراءات المباشرة التي يعطيها الحساس لا تفيد بشكل كبير وسنستنتج باستخدام عدد من العلاقات قيمة تركيز الغاز في أي مكان.     قمنا بتصميم دارة إلكترونية تقوم بحساب جهد مخرج الحساس ومقاومته وتركيز الغاز وإظهار قيمتها على شاشة LCD وإرسال إنذار في حال وجود تسرب غاز إلى الهاتف المحمول عبر الإنترنت. بالإضافة لإنذار صوتي في مكان التسرب باستخدام طنان كهربائي Buzzer، وقد أظهرت نتائج إختبار الدارة صِحّة وقدرها 92.5% وكانت الحساسية 95% أما النوعية فكانت 90%

    دراسة لقياس تراكيز الغازات ضعيفة التركيز باستخدام حساس MQ-2

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       قمنا في هذا البحث بدراسة تمكننا من حساب عدد جزئيات غاز بدلالة جهد مخرج حساس الغاز MQ-2  حيث يستطيع الحساس MQ-2 استشعار عدد من الغازات مثل: (أحادي أكسيد الكربون CO، النفط المسال LPG،  الميثان CH4، الدخان Smoke، الكحول Alcohol، الهيدروجين H2 ، البروبان C3H8) في الوسط المحيط به.     إن لحساس الغاز مقاومة تتغير قيمتها حسب تركيز الغاز ويتغير تبعاً لذلك جهد مخرج ذلك الحساس ولكن القراءات المباشرة التي يعطيها الحساس لا تفيد بشكل كبير وسنستنتج باستخدام عدد من العلاقات قيمة تركيز الغاز في أي مكان.     قمنا بتصميم دارة إلكترونية تقوم بحساب جهد مخرج الحساس ومقاومته وتركيز الغاز وإظهار قيمتها على شاشة LCD وإرسال إنذار في حال وجود تسرب غاز إلى الهاتف المحمول عبر الإنترنت. بالإضافة لإنذار صوتي في مكان التسرب باستخدام طنان كهربائي Buzzer، وقد أظهرت نتائج إختبار الدارة صِحّة وقدرها 92.5% وكانت الحساسية 95% أما النوعية فكانت 90%

    Challenges for engineering students working with authentic complex problems

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    Engineers are important participants in solving societal, environmental and technical problems. However, due to an increasing complexity in relation to these problems new interdisciplinary competences are needed in engineering. Instead of students working with monodisciplinary problems, a situation where students work with authentic complex problems in interdisciplinary teams together with a company may scaffold development of new competences. The question is: What are the challenges for students structuring the work on authentic interdisciplinary problems? This study explores a three-day event where 7 students from Aalborg University (AAU) from four different faculties and one student from University College North Denmark (UCN), (6th-10th semester), worked in two groups at a large Danish company, solving authentic complex problems. The event was structured as a Hackathon where the students for three days worked with problem identification, problem analysis and finalizing with a pitch competition presenting their findings. During the event the students had workshops to support the work and they had the opportunity to use employees from the company as facilitators. It was an extracurricular activity during the summer holiday season. The methodology used for data collection was qualitative both in terms of observations and participants’ reflection reports. The students were observed during the whole event. Findings from this part of a larger study indicated, that students experience inability to transfer and transform project competences from their previous disciplinary experiences to an interdisciplinary setting

    The Increasing Necessity of Skills Diversity in Team Teaching

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    Exploring the practical use of a collaborative robot for academic purposes

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    This article presents a set of experiences related to the setup and exploration of potential educational uses of a collaborative robot (cobot). The basic principles that have guided the work carried out have been three. First and foremost, study of all the functionalities offered by the robot and exploration of its potential academic uses both in subjects focused on industrial robotics and in subjects of related disciplines (automation, communications, computer vision). Second, achieve the total integration of the cobot at the laboratory, seeking not only independent uses of it but also seeking for applications (laboratory practices) in which the cobot interacts with some of the other devices already existing at the laboratory (other industrial robots and a flexible manufacturing system). Third, reuse of some available components and minimization of the number and associated cost of required new components. The experiences, carried out following a project-based learning methodology under the framework of bachelor and master subjects and thesis, have focused on the integration of mechanical, electronic and programming aspects in new design solutions (end effector, cooperative workspace, artificial vision system integration) and case studies (advanced task programming, cybersecure communication, remote access). These experiences have consolidated the students' acquisition of skills in the transition to professional life by having the close collaboration of the university faculty with the experts of the robotics company.Postprint (published version
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