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Development of a novel flow control system with arduino microcontroller embedded in double effect absorption chillers using the LiBr/H2O pair

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INTERNATIONAL JOURNAL OF REFRIGERATION 2020年第0期111卷 124-135页

作者： Cezar, K. L. Caldas, A. G. A. Caldas, A. M. A. Cordeiro, M. C. L. Dos Santos, C. A. C. Ochoa, A. A., V Michima, P. S. A. Univ Fed Piaui Dept Mech Engn Campus Univ Petronio Portella BR-64049550 Teresina PI Brazil Univ Fed Paraiba Dept Mech Engn Cidade Univ S-N BR-58051900 Joao Pessoa Paraiba Brazil Univ Fed Paraiba Dept Chesmistry Cidade Univ S-N BR-58051900 Joao Pessoa Paraiba Brazil Fed Inst Technol Paraiba Av Primeiro Maio 720 BR-58015435 Joao Pessoa Paraiba Brazil Fed Inst Technol Pernambuco Campus CaruaruEstr Alto MouraKM 3-8 S-N BR-55040120 Caruaru PE Brazil Fed Inst Technol Pernambuco Av Prof Luiz Freire 500 BR-50740540 Recife PE Brazil Univ Fed Pernambuco Av Prof Moraes Rego 123 BR-50670901 Recife PE Brazil

The purpose of this work is the development and implementation of a flow control strategy for the LiBr/H2O saline recirculation system in double effect absorption chillers to guarantee an optimum operating range. The control strategy was developed using the PID (Proportional-Integral-Derivative) controller hosted on the arduino prototyping platform. Structural aspects of the double-effect absorption chiller as well as updating the thermophysical properties of the solution LiBr/H2O in real time to better suit the operation of the absorption cooling system were also considered. The proposed strategy enables a low-cost embedded system for gauging, controlling flow and maintaining optimal operating conditions. An experimental analysis was performed using initially pure water for calibration and control strategy testing, followed by the LiBr/H2O solution to show its versatility and operating accuracy in refrigeration absorption chiller. As a main result, the proposed system offers control of flow rates with a resolution of 0.60 L/min for 67% of the flow range provided by the conventional magnetic centrifugal pump recirculation system. (C) 2019 Elsevier Ltd and IIR. All rights reserved.

关键词： Flow control Absorption chiller arduino microcontroller LiBr/H2O

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A Pressure Monitoring System for Water Distribution Networks Based on arduino microcontroller

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WATER 2021年第17期13卷 2321页

作者： Bruno, Federica De Marchis, Mauro Milici, Barbara Saccone, Domenico Traina, Fabrizio Univ Enna Kore Fac Engn & Architecture I-94100 Enna Italy

Efficient management of water distribution networks (WDNs) is currently a focal point, especially in countries where water scarcity conditions are more and more amplified by frequent drought periods. In these cases, in fact, pressure becomes the fundamental variable in managing the WDNs. Similarly, WDNs are often obsolete and affected by several points of water losses. Leakages are mainly affected by pressure;in fact, water utilities usually apply the technique of pressure management to reduce physical losses. It is clear how pressure plays a fundamental role in the management of WDNs and in water safety. Even though the technologies are quite mature, these systems are often expensive, especially if a capillarity monitoring system is required;thus, water managers apply the measurement of the flow rate and pressure at very few points. Today, the implementation of the Internet of things (IoT) can be considered a key strategy for monitoring water distribution systems. Once the sensors are installed, in fact, it is relatively easy to build a communication system able to collect and send data from the network. In the proposed study, a smart pressure monitoring system was developed using low-cost hardware and open-source software. The prototype system is composed of an arduino microcontroller, a printed circuit board, and eight pressure transducers. The efficiency of the proposed tool was compared with a SCADA monitoring system. To investigate on the efficiency of the proposed measurement system, an experimental campaign was carried out at the Environmental Hydraulic Laboratory of the University of Enna (Italy), and hydrostatic as well as hydrodynamic tests were performed. The results showed the ability of the proposed pressure monitor tool to have control of the water pressure in a WDN with a simple, scalable, and economic system. The proposed system can be easily implemented in a real WDN by water utilities, thus improving the knowledge of pressure and increasing the ef

关键词： arduino microcontroller information and communication technologies (ICT) water distribution network experimental pipe network

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Data transmission prototypes through wireless optical communication link using arduino microcontroller

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JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS 2019年第7-8期21卷 459-469页

作者： Eldallal, Tarek A. Fayed, Heba A. Aly, Moustafa H. Arab Acad Sci Technol & Maritime Transport Elect & Commun Engn Dept Coll Engn & Technol Alexandria Egypt Arab Acad Sci Technol & Maritime Transport Alexandria Egypt

In this paper, Free Space Optical communication link prototypes have been practically experimented. Audio and text data transmission models are implemented using a programmed microcontroller "arduino Uno". Using a 650 nm laser source, a digital audio signal is transmitted with a data rate of 506.3 kbps in addition to a text data transmitted with a bit rate of 125 kbps. Both signals are received using a TSL250R photodiode. These prototypes create an FSO communication link designed for audio and text transmission. The use of arduino microcontroller offers a more accurate transmission of higher quality. The concept discussed can be generalized for real optical communication systems instead of lab work only.

关键词： Optical communication Wireless communication Free space optics Data transmission Audio signal Text data arduino microcontroller

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Reconfigurable MIMO Antenna for Wireless Communication Based on arduino microcontroller

Reconfigurable MIMO Antenna for Wireless Communication Based...

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IEEE International RF and Microwave Conference (RFM)

作者： Kadir, Evizal Abdul Irie, Hitoshi Rahim, Sharul Kamal Abdul Arta, Yudhi Rosa, Sri Listia Univ Islam Riau Fac Engn Dept Informat Engn Jl Kaharuddin Nasution 113 Pekanbaru 28284 Riau Indonesia Chiba Univ Ctr Environm Remote Sensing Inge Ward 1-33 Yayoicho Chiba Chiba Japan Univ Teknol Malaysia Wireless Commnicat Ctr Johor Baharu 81310 Johor Malaysia

ISBN: (纸本)9781538667200

Wireless communication is common use on devices to send or exchange information such computer peripheral, mobile device, home appliances, etc. Every device embedded with wireless module and contribute electromagnetic, thus high possibility of occurring interference. One of method how to control interference is by controlling signal to transmit as well as power, thus in this research designed reconfigurable MIMO antenna to control antenna radiation pattern to reduce interference issue in wireless communication. The antenna designed in 2.4 GHz band because most and common use of devices peripheral using unlicensed band as well as for Wireless Fidelity (Wi-Fi). The designed antenna is 4x4 MIMO which operate at 2.4 and 2.6 GHz for Wireless Local Area Network (WLAN) and Long Term Evolution (LTE). The system radiation pattern is configured using an arduino microcontroller to driven PIN diode to switch he beam. Simulations and measurements are in good agreement with the configuration of the single antenna and 2x2 and 4x4 MIMO. The antenna is operational between 2.387 and 2.628 GHz, whereas the simulated and measured reflection coefficients are obtaining at least -24.3 dB. The MIMO antenna designed to improve data communication, especially in mobile communication systems.

关键词： Antenna MIMO Reconfigurable arduino microcontroller Wireless Communication

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Intelligent Suitcase based on arduino microcontroller

Intelligent Suitcase based on Arduino Microcontroller

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作者： Yue Cao School of North China Electic Power University

arduino is an open source, portable, flexible and easy to use open source electronic platform. This intelligent suitcase uses arduino as a single chip microcomputer and HC-SR04 ultrasonic ranging module to realize intelligent following person's track. The handheld device is made of an arduino Nano board and connected to the HC-SR04 ultrasonic module for receiving and transmitting ultrasonic signals. Both sides of the suitcase are also ultrasonic modules. Intelligent tracking is realized by detecting the time difference between the signal launched by the hand-held ultrasonic module and the ultrasonic module on the two sides of the suitcase, which reflects the relationship between the running direction of the suitcase and the direction of the person. In addition, the suitcase can also be equipped with smart locks, removable battery and can be switched to mobile phone remote control and automatic follow mode. The suitcase can also be switched to a hand-pulled mode when the battery is run out. This paper proves the feasibility of intelligent luggage following by using ultrasonic module through theory.

关键词： arduino microcontroller HC-SR04 ultrasonic module intelligent following person's track

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Person Tracking System based on arduino microcontroller and Web Technologies

Person Tracking System based on Arduino Microcontroller and ...

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International Conference on Smart Applications, Communications and Networking (SmartNets)

作者： Hammami, Amir Shaqra Univ Afif Branch Coll Comp Sci & Informat Technol Afif Saudi Arabia Ecole Natl Ingenieurs Gabes Gabes Tunisia

ISBN: (纸本)9781538692011

Tracking a person problem in a specific city and knowing his geographic location is a big issue. When we know the location of a specific person, we can solve a lot of problems related to security and emergency. On the other hand the introduction of Internet of Things (IoT) is considered as the key infrastructure in a smart city. Therefore we present in this paper a Person Tracking System using the concept of Internet of Things based on arduino microcontroller and GPS/GSM/GPRS technologies. Our approach follows an active tracking mode where GPS coordinates are stored in a remote database periodically after a specified time interval. A supervisor can view locations in through web application based on Google Map.

关键词： GPS Track Internet of Things Smart City arduino microcontroller

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Digital Control Of Buck Converter Using arduino microcontroller For Low Power Applications

Digital Control Of Buck Converter Using Arduino Microcontrol...

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International Conference On Smart Technologies For Smart Nation (SmartTechCon)

作者： Viswanatha, V. Reddy, Venkata Siva R. REVA Univ Dept Elect & Elect Engn Bangalore Karnataka India REVA Univ Dept Elect & Commun Engn Bangalore Karnataka India

ISBN: (纸本)9781538605691

This paper describes the design, simulation in open loop and closed loop system and hardware implementation of buck converter which converters 12V DC to 6V DC at 31 kHz for 5 Watt load. Digital control design is done with use of arduino Uno microcontroller. Simulation is carried out using PSIM 10.0.5. In simulation;transient response, steady state response, load and line regulations are carried out and output voltage signal in both open loop and closed loop are obtained. Hardware is implemented in open loop system and inductor voltage, gate pulse and output voltage are measured on hardware platform as per the design and compared with simulation results.

关键词： Buck converter arduino microcontroller PSIM open loop closed loop load and line regulation

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Automating double ring infiltrometer with an arduino microcontroller

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GEODERMA 2016年 262卷 133-139页

作者： Fatehnia, M. Paran, S. Kish, S. Tawfiq, K. FAMU FSU Coll Engn Dept Civil & Environm Engn Tallahassee FL 32310 USA FAMU FSU Coll Engn Dept Elect & Comp Engn Tallahassee FL 32310 USA Florida State Univ Dept Earth Ocean & Atmospher Sci Tallahassee FL 32306 USA

In this paper, we describe the designed and tested system of automated double ring infiltrometer (DRI) that we have developed using an arduino microcontroller, a Hall effect sensor, a peristaltic pump, a water level sensor, and a constant-level float valve. The system can be used for infiltration measurements in both single ring falling head and double ring constant head methods. The precise measurements of the current method compared to previous designed systems are not affected by sunlight, and due to the method of flow measurement, remain accurate even for low infiltration values. The set-up has an easy real-time data storage on a micro-SD card without a need of a portable computer in the field. It only requires a single reservoir for both inner and outer rings to which, water can be added anytime needed without affecting the measurements. The system automatically detects when the steady state infiltration rate is reached and concludes the testing and stops measurements. The system is mounted in a portable and weather resistant box and is applied to run DRI testing in the field to check the applicability and accuracy of the portable set-up in field measurements. Manual testing was also performed in the field for comparison with the automated system measurements. Overall system architecture, and the design of hardware and software components are presented in details. The system configuration is illustrated for better understanding of the set-up. Published by Elsevier B.V.

关键词： Double ring infiltrometer arduino microcontroller eTape (TM) MOSFET switch Hall effect sensor Peristaltic pump

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A Continuous Health Monitoring System for Photovoltaic Array Using arduino microcontroller

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Circuits and Systems 2016年第11期7卷 3494-3503页

作者： P. Pounraj D. Prince Winston S. Cynthia Christabel R. Ramaraj Department of Electrical and Electronic Engineering Cheran College of Engineering Karur India Department of Electrical and Electronic Engineering Kamaraj College of Engineering and Technology Virudhunagar India Department of Electrical and Electronic Engineering Sethu Institute of Technology Kariapatti India Kamaraj College of Engineering and Technology Virudhunagar India

In this paper new technique is developed to monitor the health status of the PV panels in the array. For finding the health status short circuit current is measured continuously over a fixed time period. This technique can classify the health status into four categories such as Healthy, Low Fault, Medium Fault and High Fault. By this classification faulty operation can be rectified and power generation may be improved. In case of high faults, PV panels can be protected. The cost requirement for the implementation is very low. The proposed technique is implemented in MATLAB Simulation and hardware. The array considered in this paper is 2 × 2 Series Parallel.

关键词： Photovoltaic (PV) Array Health Monitoring Fault arduino microcontroller

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Recent progress in arduino- and smartphone-based sensors for biochemical and environmental analysis

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TRAC-TRENDS IN ANALYTICAL CHEMISTRY 2025年 183卷

作者： Sharipov, Mirkomil Uzokboev, Shakhzodjon Nghia, Nguyen Ngoc Azizov, Shavkatjon Ryu, Wonhyoung Tawfik, Salah M. Lee, Yong-Ill Changwon Natl Univ Inst Basic Sci Anastro Lab Chang Won 51140 South Korea Yonsei Univ Sch Mech Engn Seoul 03722 South Korea Pharmaceut Tech Univ Dept Pharmaceut Sci Tashkent 100084 Uzbekistan Vietnam Acad Sci & Technol Inst Appl Mat Sci Hanoi Vietnam Egyptian Petr Res Inst Dept Petrochem Cairo 11727 Egypt Ulsan Natl Inst Sci & Technol UNIST Dept Mech Engn Ulsan 44919 South Korea

Recent SARS-CoV-2 pandemic and environmental disasters have emphasized the importance of rapid and efficient sensing platforms. Scientists have focused on developing portable sensing platforms to avoid using bulky and high-cost analytical equipment. Smartphones are the most accessible gadgets with integrated sensors to perform analytical analysis. However, the constant advances and competition in smartphones result in upgrades to smartphones, including their sensors, every year. Moreover, differences in smartphones' sensor and image processing algorithms that vary from model to model complicate the standardization of readers. arduino microcontroller-based readers have been investigated as an alternative to the smartphone data reader. Although arduino-based sensors are not as portable as smartphones and cannot perform other tasks than they are developed and programmed for, they are usually built from a limited number of components, thus simplifying their standardization. In this review, we outline the different approaches used to develop smartphone-based analytical sensors and the development of arduino-based sensors. These approaches will mainly focus on developing novel sensing platforms, the choice of smartphone sensors, and data processing methods. We also discuss the application of smartphone- and arduino-based sensors for biochemical and environmental monitoring.

关键词： Smartphone arduino microcontroller POCT Healthcare sensor Environmental sensor

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