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Development of a magneto-optical sensor prototype to measure current by means of the induced magnetic field

SENSORS AND ACTUATORS A-PHYSICAL 2016年 249卷 231-241页

作者： Garcia, R. Blanco, E. Dominguez, M. Univ Cadiz Dept Condensed Matter Phys Campus Univ Puerto Real E-11510 Cadiz Spain Univ Cadiz Inst Electron Microscopy & Mat Campus Univ Puerto Real E-11510 Cadiz Spain

The design and construction of the working prototype of a device to measure the magnetic field induced by a conducting wire as well as the current that induces this field, based on the magneto-optical Faraday effect, is described in this work. The transducer element is a nanocomposite material made up of maghemite nanoparticles embedded in a porous silica matrix, with a high low-field Verdet constant and a figure of merit, relating Faraday specific rotation to the absorption coefficient, of 5. The device has been mostly developed with low-cost parts, using the open-source prototyping platform arduino plus a compact commercial lock-in amplifier. It is shown that the sensing material shows a linear response up to 30 G, which would allow measuring AC currents of 1300 A at similar to 10 cm from the wire. This setup allows avoiding the use of any magnetic field concentrator. (C) 2016 Elsevier B.V. All rights reserved.

关键词： Magnetooptical sensors Current sensors Faraday effect Portable instruments arduino microcontroller

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Improved teaching-learning-based optimization algorithm-based maximum power point trackers for photovoltaic system

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ELECTRICAL ENGINEERING 2018年第3期100卷 1773-1784页

作者： Fathy, Ahmed Ziedan, Ibrahim Amer, Dina Zagazig Univ Fac Engn Elect Power & Machines Dept Zagazig Egypt Zagazig Univ Fac Engn Comp Engn Dept Zagazig Egypt

This paper presents an improved teaching- learning-based optimization algorithm (ITLBO) for designing and implementing the maximum power point trackers (MPPT) incorporated with a photovoltaic (PV) module to extract the maximum power from the PV generating unit. The proposed algorithm is based on a population-based optimization algorithm to design a practical circuit of MPPT controller based on arduino microcontroller. A modification in the teaching-learning-based optimization algorithm is considered where the best learner is considered as a teacher in the learner phase. The ITLBO-MPPT is physically implemented with arduino Uno microcontroller which is presented as an open source. An experimental circuit comprising a PV module, a converter controlled via arduino which is programmed by the proposed algorithm, ITLBO, is implemented, and the results are tabulated via three days of different operating conditions. A significant improvement in the global maximum power point is obtained via the proposed approach compared with that obtained via PSO and TLBO.

关键词： PV panel MPPT algorithms Teaching-learning-based optimization (TLBO) arduino microcontroller

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Design and Implementation of a Discrete-Time Proportional Integral (PI) Controller for the Temperature Control of a Heating Pad

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SLAS TECHNOLOGY 2018年第6期23卷 614-623页

作者： Khan, Pathan Fayaz Sengottuvel, S. Patel, Rajesh Gireesan, K. Baskaran, R. Mani, Awadhesh Homi Bhabha Natl Inst Indira Gandhi Ctr Atom Res Condensed Matter Phys Div Mat Sci Grp Kalpakkam Tamil Nadu India

Contact heat evoked potentials (CHEPs) are recorded from the brain by giving thermal stimulations through heating pads kept on the surface of the skin. CHEP signals have crucial diagnostic implications in human pain activation studies. This work proposes a novel design of a digital proportional integral (PI) controller based on arduino microcontroller with a view to explore the suitability of an electric heating pad for use as a thermode in a custom-made, cost-effective CHEP stimulator. The purpose of PI controller is to set, regulate, and deliver desired temperatures on the surface of the heating pad in a user-defined pattern. The transfer function of the heating system has been deduced using the parametric system identification method, and the design parameters of the controller have been identified using the root locus technique. The efficiency of the proposed PI controller in circumventing the well-known integrator windup problem (error in the integral term builds excessively, leading to large transients in the controller output) in tracking the reference input and the controller effort (CE) in rejecting output disturbances to maintain the set temperature of the heating pad have been found to be superior compared with the conventional PI controller and two of the existing anti-windup models.

关键词： PI controller arduino microcontroller CHEPS system identification

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Intelligent, low-cost, high-performance system for environmental air quality monitoring through integrated gas, temperature, and humidity analysis

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INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY 2024年第5期21卷 4881-4898页

作者： de Marinho, P. F. C. Santana, G. M. Felix, M. L. Morais, R. de Medeiros Santos, A. A. de Jesus, R. M. Univ Estadual Santa Cruz UESC Programa Pos Graduacao Desenvolvimento & Meio Ambi Rodovia Jorge AmadoKm 16 BR-45662900 Ilheus BA Brazil Colegiado Engn Elect Fac Madre Thais Fac Ilheus Rodovia Ilheus OlivencaJardim Atlant BR-45659226 Ilheus BA Brazil Univ Estadual Santa Cruz UESC Dept Ciencias Exatas & Tecnol Rodovia Jorge AmadoKm 16 BR-45662900 Ilheus BA Brazil Univ Fed Bahia UFBA Inst Nacl Ciencia & Tecnol Energia & Ambiente INCT BR-40170115 Salvador BA Brazil

The global challenge of environmental air quality monitoring necessitates the development of innovative solutions. In response, a novel intelligent system was designed to monitor air quality through the integrated analysis of gases (carbon dioxide, carbon monoxide, and liquefied petroleum gas), room temperature, and humidity, utilizing the arduino microcontroller and the Internet of Things application. The initial phase involved rigorous component selection, including the arduino microcontroller, gas sensors, Wi-Fi module, humidity and temperature sensors, LCD display, buzzer, and communication with the Blynk application. Subsequently, seamless integration of these electronic components of the system and envelopment of the prototype in acrylic material were accomplished. After envelopment, the system was then deployed for integrated environmental monitoring of gases, temperature, and humidity. The results showed that the developed system exhibits a cost-effective and high-performance solution, characterized by its compactness, practicality, and versatility in various environments. Its implementation costs are significantly low, making it commercially viable.

关键词： arduino microcontroller Environment monitor Gas sensor Internet of Things Pollution sensors

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Project-Based Learning Technology: An Example in Programming microcontrollers

INTERNATIONAL JOURNAL OF EMERGING TECHNOLOGIES IN LEARNING

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INTERNATIONAL JOURNAL OF EMERGING TECHNOLOGIES IN LEARNING 2020年第11期15卷 218-227页

作者： Nurbekova, Zhanat Tolganbaiuly, Talant Nurbekov, Bahyt Sagimbayeva, Ainur Kazhiakparova, Zhadira LN Gumilyov Eurasian Natl Univ Inst Digitalizat Nur Sultan 010000 Kazakhstan LN Gumilyov Eurasian Natl Univ Dept Informat & Informat Secur Nur Sultan 010000 Kazakhstan LN Gumilyov Eurasian Natl Univ Fac Mech & Math Nur Sultan 010000 Kazakhstan Abay Kazakh Natl Pedag Univ Dept Informat & Informatizat Educ Inst Math Phys & Informat Alma Ata 050000 Kazakhstan West Kazakhstan Innovat Technol Univ Dept Nat Sci Disciplines Uralsk 090000 Kazakhstan

This article presents the technology of the organization of project-based learning in programming microcontrollers based on the faculty of information technology L.N. Gumilyov Eurasian National University. Based on the analysis of scientific, methodological and normative articles, a structural model of the organization of the project-based learning in programming microcontrollers was developed. The processes of project development life cycle and the role of each member of the project team were described by stage. In the process of developing the project, students faced various challenges and found ways to solve them. As a result of the project-based seminars, the participants learnt to apply theoretical knowledge to solve real world problems in practice and received an unforgettable experience working in team.

关键词： Project-based learning arduino microcontroller projects programming microcontrollers

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Hardware Implementation of Perturb and Observe Maximum Power Point Tracking Algorithm for Solar Photovoltaic System

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TRANSACTIONS ON ELECTRICAL AND ELECTRONIC MATERIALS 2018年第3期19卷 222-229页

作者： Ilyas, Afshan Ayyub, Mohammad Khan, M. Rizwan Husain, Mohammed Aslam Jain, Abhinandan Aligarh Muslim Univ Dept Elect Engn Aligarh Uttar Pradesh India

Solar photovoltaic systems have evolved as a prominent renewable source of energy owing to its eco-friendly nature, long lifetime, and low maintenance requirement. However, its conversion efficiency is very low. Different maximum power point tracking (MPPT) techniques have been used to extract maximum power from the photovoltaic system. In this study, the perturb and observe (P&O) MPPT algorithm, which is practically implemented on an arduino Uno board and simulated in Matlab/Simulink under the same environmental conditions, is used to track the maximum power. Different parameters of a Simulink-based PV module and a practical photovoltaic module are obtained and compared. The main advantages of the P&O MPPT algorithm are its low cost and easy implementation. However, it may fail to track the maximum operating point under varying environmental conditions.

关键词： arduino microcontroller Maximum power point tracking Perturb and observe Solar photovoltaic

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A Distributed and Secure Software Architecture Based on Blockchain Technology for Application Software

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WIRELESS PERSONAL COMMUNICATIONS 2023年第1期130卷 219-240页

作者： Kooshari, Ali Fartash, Mehdi Islamic Azad Univ Comp Engn Dept Arak Branch Arak Iran

The use of IoT technology is constantly and uninterruptedly increasing. Sensors in the IoT environment collect large amounts of data and send them to servers. The user's data in IoT applications, which has a large volume, is the big data. Big data belonging to IoT network users expose various security attacks and challenges. One of the technologies that provide data security in the Internet of Things is Blockchain technology. In Blockchain technology, all participating nodes participate in this distributed cryptography for data validation. This article aims to provide a blockchain-based distributed software architecture for real-world application software to increase its security. The arduino nightly 1.6.12 software simulates and extracts the raw data and codes the modules. In this method, the extracted data analyze after storage in the database. Only transient security threats are identified and corrected by applying software approaches, but in the proposed framework, which is the hardware approach, persistent errors can also be identified and corrected. From the point of view of implementation cost, the hardware method has 66.7% hardware overhead. This method is practical and highly valued in applications where data security is essential.

关键词： IoT Distribution software Blockchain arduino microcontroller Security

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Realisation of incremental conductance the MPPT algorithm for a solar photovoltaic system

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INTERNATIONAL JOURNAL OF AMBIENT ENERGY 2018年第8期39卷 873-884页

作者： Ilyas, Afshan Ayyub, Mohammad Khan, M. Rizwan Jain, Abhinandan Husain, Mohammed Aslam Aligarh Muslim Univ Dept Elect Engn Aligarh Uttar Pradesh India

This paper presents the modelling, simulation and hardware implementation of the incremental conductance (INC) maximum power point tracking (MPPT) algorithm. The extraction of maximum power from the solar photovoltaic system was made by integrating the PV module with a DC-DC converter and utilising the MPPT algorithm. In this work, the INC MPPT algorithm is practically implemented on an arduino Uno board to track the maximum power point (MPP) and also simulated in Matlab/Simulink under the same environmental conditions. The performance of the INC algorithm was also compared with the conventional Perturb and Observe (P&O) MPPT algorithm. The experimental and simulation results are provided for both MPPT techniques. Matlab/Simulink was used for simulation studies.

关键词： Solar photovoltaic maximum power point tracking incremental conductance perturb & observe arduino microcontroller Matlab/Simulink

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Vibrotactile piezoelectric stimulation system with precise and versatile timing control for somatosensory research

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JOURNAL OF NEUROSCIENCE METHODS 2019年第0期317卷 29-36页

作者： Sun, Limin Okada, Yoshio Harvard Med Sch Boston Childrens Hosp Dept Med Div Newborn Med Boston MA 02115 USA

Background: Tactile stimulations systems are useful for studying the somatosensory system in children because they are innocuous and safe. Stimulators based on piezoelectric actuator are useful, but there is still a need for such systems capable of providing accurate and versatile control of timing and pattern of activation. New method: We have implemented a vibrotactile stimulating system useful for behavioral and electroencephalography (EEG) and magnetoencephalography (MEG) research. Our design goal was to create a system capable of providing up to five independently controlled mechanical stimulations with precise timing. We developed a Graphic User Interface (GUI) in LabVIEW, which controls a commercially available piezoelectric braille stimulator using an arduino based controller. We made a customized braille stimulator based on the Metec Braille device. Results: Our system can control up to five tactile stimulators with independent timing control and negligible errors. Although it can be directly used for behavioral and EEG research, the piezoelectric stimulators in our system generate stimulus artifacts that interfere with MEG recordings. A moving averaging subtraction algorithm we developed can remove the artifact. The stimulator can be used to measure somatic evoked magnetic fields from the somatosensory cortex of a child without the artifact. Comparison to existing methods: Our system provides an accurate independent control of one or more piezoelectric actuators using a GUI-based easy-to-control programming approach based on recent advances in embedded systems and software. Versatility and precise stimulation timing distinguish our system compared to existing somatic stimulators. Conclusions: Our system may be useful for somatic research.

关键词： Somatic stimulator arduino microcontroller Integrated Development Environment (IDE) Braille cells somatosensory system magnetoencephalography (MEG)

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3D printed silicone platforms with laser-scattering protein detection under flow analysis conditions as a development of Silicone Optical Technology (SOT)

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MICROCHEMICAL JOURNAL 2020年 157卷 104936-104936页

作者： Strzelak, Kamil Malasuk, Chacriya Oki, Yuji Morita, Kinichi Ishimatsu, Ryoichi Univ Warsaw Fac Chem Pasteura 1 PL-02093 Warsaw Poland Kyushu Univ Grad Sch Informat Sci & Elect Engn Dept Elect Nishi Ku 744 Motooka Fukuoka 8190395 Japan USHIO INC New Business Dev Off Chiyoda Ku 6-1 Ohtemachi 2 Chome Tokyo 1008150 Japan Kyushu Univ Dept Appl Chem Nishi Ku 744 Motooka Fukuoka 8190395 Japan

In this work, the 3D printed silicone microfluidic systems with simultaneous laser-scattering detection for turbidimetric and nephelometric measurements are presented. As a model reaction, the Exton method for total protein determination has been chosen as the well-known analytical protocol. Presented research is a development of recently presented idea of Silicone Optical Technology (SOT). It can be considered as the next step for all-in-one 3D printed analytical system concept, which means that microfluidic platform as well as detection system parts can be constructed during one-step manufacturing process. During the investigations, three microfluidic platforms with different flow-mixing patterns were designed and optimized for flow rate and sample injection volume. The most promising system with so-called 3D mixing (mixing channel along three axes) was characterized by analytical parameters sufficient for total protein analysis: limit of detection of 3 mg/L, linearity in the range of 16 - 400 mg/L and 50 mu L sample consumption. The analytical usefulness of developed microfluidic platform was proved by analysis of urine samples. Furthermore, the design and setting up of double detection system based on arduino microcontroller have been discussed.

关键词： 3D printing Laser-scattering Exton method Flow analysis arduino microcontroller

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