Analysis of low-cost electronic device for diagnosis of COVID-19

2021 ◽  
Vol 25 (3/4) ◽  
pp. 252
Author(s):  
Akshaya Nidhi Bhati ◽  
Himanshu Maharshi ◽  
Arun Kumar
Keyword(s):  
Electronic Device ◽  
Low Cost

Determination of Ultrasonic Welding Optimal Parameters for Thermoplastic Material of Manufacturing Products

2013 ◽  
Vol 64 (1) ◽  
Author(s):  
Rashiqah Rashli ◽  
Elmi Abu Bakar ◽  
Shahrul Kamaruddin
Keyword(s):  
Electronic Device ◽  
Low Cost ◽  
Near Field ◽  
Welding Process ◽  
Ultrasonic Welding ◽  
Field Configuration ◽  
Welding Parameters ◽  
Optimal Parameters ◽  
Thermoplastic Material

Ultrasonic welding had been widely used in various manufacturing industries such as aviation, medical, electronic device and many more. It offers a continued safe operation, faster and also low cost as it able to join weld part less than one second and also simple to maintain the tooling devices. Though ultrasonic welding brings a lot of advantages in assembly especially in thermoplastic material of manufacturing product, it also has a dominant problem to be deal with. The problem in ultrasonic welding is poor weld quality due to improper selection of ultrasonic welding parameters especially in near field configuration. Thus, an optimal combination of parameters is crucial in order to produce good quality weld assembly for this configuration. In this paper, ultrasonic welding process, ultrasonic weld joint defects and determination of optimal parameters for thermoplastic material had been discussed thoroughly. 

An Imaging Capable, Low Cost IoT Node for River Flood Phenomena

2021 ◽  
Author(s):  
Evangelos Skoubris ◽  
George Hloupis
Keyword(s):  
Water Level ◽  
River Basin ◽  
Electronic Device ◽  
Low Cost ◽  
Early Warning Systems ◽  
Normal Operation ◽  
Warning Sign ◽  
Still Images ◽  
River Floods ◽  
Social Importance

<p>Among all natural disasters, river floods are becoming increasingly frequent. They present high risk and their impact can be fairly destructive and of strong economic, health, and social importance. Key tools to avoid their catastrophic results are the Early Warning Systems (EWS). An EWS usually monitors various physical quantities through a specific hardware, and produce data which after certain processing can detect and estimate the level of the risk.</p><p>In the current work we present the concept, the design, the application, and some preliminary data regarding a low cost imaging node, part of an EWS aimed for river floods. This EWS consists of various sensing nodes which are mainly equipped with water presence detectors, water level meters, water temperature sensors, along with the necessary networking capability. The novelty of this new node design is that it utilizes a VGA resolution camera which captures still images of a view of interest. The latter can be for example an implementation prone to defects in case of flood, such as a river basin level road crossing, or a bridge. The images can also provide constant monitoring of the river basin state, i.e. to detect the presence of any unwanted objects (waste or other natural & artificial bring materials). Through image processing the images can even provide some coarse data, i.e. water level measurements by utilizing vertical stripped rods within the field of view of the camera.</p><p>The ability to have a camera usually counteracts the IoT characteristics of an electronic device. Nevertheless, in this design the IoT character of the node was not constrained. The nodes have extended power autonomy (several months via Li-Ion battery, optionally solar rechargeable), present a small size, each node is network independent using GSM and LoRaWAN technology. The data usage is minimized by uploading only 2 QVGA images per day in normal operation (can be increased to a maximum of 48 VGA images per day, if required). In case of risk detection the node also supports the actuation of a local warning sign.</p>

scholarly journals A Prototype Photoplethysmography Electronic Device that Distinguishes Congestive Heart Failure from Healthy Individuals by Applying Natural Time Analysis

Electronics ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 1288 ◽  
Author(s):  
George Baldoumas ◽  
Dimitrios Peschos ◽  
Giorgos Tatsis ◽  
Spyridon K. Chronopoulos ◽  
Vasilis Christofilakis ◽  
...  
Keyword(s):  
Heart Failure ◽  
Congestive Heart Failure ◽  
Electronic Device ◽  
Low Cost ◽  
Prototype System ◽  
Healthy Individuals ◽  
Time Analysis ◽  
Clear Separation ◽  
Natural Time ◽  
Natural Time Analysis

In this paper, a prototype photoplethysmography (PPG) electronic device is presented for the distinction of individuals with congestive heart failure (CHF) from the healthy (H) by applying the concept of Natural Time Analysis (NTA). Data were collected simultaneously with a conventional three-electrode electrocardiography (ECG) system and our prototype PPG electronic device from H and CHF volunteers at the 2nd Department of Cardiology, Medical School of Ioannina, Greece. Statistical analysis of the results show a clear separation of CHF from H subjects by means of NTA for both the conventional ECG system and our PPG prototype system, with a clearly better distinction for the second one which additionally inherits the advantages of a low-cost portable device.

scholarly journals Real Time Monitoring of Children, and Adults with Mental Disabilities Using a Low-Cost Non-Invasive Electronic Device

Micromachines ◽  
2017 ◽  
Vol 8 (10) ◽  
pp. 292
Author(s):  
Carlos Polanco ◽  
Ignacio Vazquez ◽  
Adrian Martinez-Rivas ◽  
Miguel Arias-Estrada ◽  
Thomas Buhse ◽  
...  
Keyword(s):  
Real Time ◽  
Electronic Device ◽  
Low Cost ◽  
Mental Disabilities ◽  
Real Time Monitoring ◽  
Non Invasive

scholarly journals Challenges in Improving Performance of Oxide Thermoelectrics Using Defect Engineering

2021 ◽  
Author(s):  
Jamil Ur Rahman ◽  
Gul Rahman ◽  
Soonil Lee
Keyword(s):  
Thermal Conductivity ◽  
Phonon Scattering ◽  
Electronic Device ◽  
Low Cost ◽  
Temperature Stability ◽  
Charge Carriers ◽  
High Concentration ◽  
Anion Vacancies ◽  
Cation And Anion Vacancies ◽  
Oxide Thermoelectric Materials

Oxide thermoelectric materials are considered promising for high-temperature thermoelectric applications in terms of low cost, temperature stability, reversible reaction, and so on. Oxide materials have been intensively studied to suppress the defects and electronic charge carriers for many electronic device applications, but the studies with a high concentration of defects are limited. It desires to improve thermoelectric performance by enhancing its charge transport and lowering its lattice thermal conductivity. For this purpose, here, we modified the stoichiometry of cation and anion vacancies in two different systems to regulate the carrier concentration and explored their thermoelectric properties. Both cation and anion vacancies act as a donor of charge carriers and act as phonon scattering centers, decoupling the electrical conductivity and thermal conductivity.

scholarly journals Social Distance Monitoring Approach Using Wearable Smart Tags

Electronics ◽  
2021 ◽  
Vol 10 (19) ◽  
pp. 2435
Author(s):  
Tareq Alhmiedat ◽  
Majed Aborokbah
Keyword(s):  
Social Distance ◽  
Electronic Device ◽  
Close Contact ◽  
Low Cost ◽  
Threshold Value ◽  
Human Detection ◽  
Distance Functions ◽  
Infected People ◽  
The Social ◽  
Indoor And Outdoor Environments

Coronavirus has affected millions of people worldwide, with the rate of infected people still increasing. The virus is transmitted between people through direct, indirect, or close contact with infected people. To help prevent the social transmission of COVID-19, this paper presents a new smart social distance system that allows individuals to keep social distances between others in indoor and outdoor environments, avoiding exposure to COVID-19 and slowing its spread locally and across the country. The proposed smart monitoring system consists of a new smart wearable prototype of a compact and low-cost electronic device, based on human detection and proximity distance functions, to estimate the social distance between people and issue a notification when the social distance is less than a predefined threshold value. The developed social system has been validated through several experiments, and achieved a high acceptance rate (96.1%) and low localization error (<6 m).

scholarly journals Monitoring and controlling the speed and direction of a DC motor through FPGA and comparison of FPGA for speed and performance optimization

2021 ◽  
Vol 11 (5) ◽  
pp. 3903
Author(s):  
Huda M. Abdul Abbas ◽  
Raad Farhood Chisab ◽  
Mohannad Jabbar Mnati
Keyword(s):  
Real Time ◽  
Performance Optimization ◽  
Pulse Width Modulation ◽  
Electronic Device ◽  
Low Cost ◽  
Dc Motor ◽  
Know How ◽  
Field Programmable ◽  
Programmable Gate Arrays ◽  
And Performance

<span lang="EN-US">We are living in the 21<sup>st</sup> century, an era of acquiring necessity in one click. As we, all know that technology is continuously reviving to stay ahead of advancements taking place in this world of making things easier for mankind. Technology has been putting his part in introducing different projects as we have used the field programmable gate arrays (FPGAs) development board of low cost and programmable logic done by the new evolvable cyclone software is optimized for specific energy based on Altera Cyclone II (EP2C5T144) through which we can control the speed of any electronic device or any Motor Control IP product targeted for the fan and pump. Altera Cyclone FPGAs’ is a board through which we can monitor the speed and direction of the DC motor. As we know how to make understand, dynamic analog input using an A-to-D convertor and we know how to create pulse width modulation (PWM) output with FPGA. Therefore, by combining these two functions we can create an FPGA DC motor controller. Our paper is divided into three parts: First, all of us will attempt to imitate the issue and can try to look for its answer. Secondly, we will try to verify the solution for real-time. In addition, in the last step, we will verify the solution on the real-time measurements.</span>

scholarly journals Factors Determining the Access to E-services of Public Institutions in Sri Lanka: A Case Study of Selected Divisional Secretariat Areas in Ampara District

2020 ◽  
Vol 13 (3) ◽  
pp. 80
Author(s):  
M. A. M. Fowsar ◽  
T. Fathima Sajeetha
Keyword(s):  
Sri Lanka ◽  
Service Delivery ◽  
Quantitative Research ◽  
Electronic Device ◽  
Low Cost ◽  
Public Institutions ◽  
Quantitative Research Methods ◽  
Qualitative And Quantitative ◽  
Structured Questionnaire

Enhancing e-service facilities to the citizens would make it easy for them to access various government and private services. It has currently become an essential aspect of the evolution of public administration. All governments, including those of third world countries, are now trying to improve their e-service delivery. E-service delivery is one of the fundamental mechanisms to enhance quality service delivery with transparency, effectiveness, and efficiency. Sri Lanka has made attempts to deliver e-services in multiple sectors, but many constraints have prevented all citizens from accessing those services. Against this backdrop, this study attempts to investigate the factors that influence the ability of citizens to access the various e-services in selected Divisional Secretariat areas of Ampara district, Sri Lanka. This study was conducted using both qualitative and quantitative research methods during the period from July 2018 to January 2019. The qualitative data were gathered from published books, research articles, and personal interviews, and the quantitative data were gathered through a structured questionnaire and statistical reports of government institutions. The collected data were analysed using both qualitative and quantitative techniques, and results are presented in text, tables and charts format. The findings of the study show that factors such as security, the availability of electronic device facilities, and low cost encouraged citizens to access these services often. Nevertheless, factors like difficulty in understanding e-services and concerns about its security have discouraged people from accessing e-services.

scholarly journals Development of a Utility Model for the Measurement of Global Radiation in Photovoltaic Applications in the Internet of Things (IoT)

Electronics ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 304 ◽  
Author(s):  
Rus-Casas C. ◽  
Hontoria L. ◽  
Fernández-Carrasco J.I. ◽  
Jiménez-Castillo G. ◽  
Muñoz-Rodríguez F.
Keyword(s):  
Internet Of Things ◽  
Electronic Device ◽  
Low Cost ◽  
Global Radiation ◽  
The Internet ◽  
Utility Model ◽  
Incident Solar Radiation ◽  
Photovoltaic Applications ◽  
The Internet Of Things ◽  
The Ideal

In order to develop future projects in the field of photovoltaic solar energy, it is essential to accurately know the potential solar resources. There are many methods to estimate the incident solar radiation in a certain place. However, most of them are very expensive or do not have the ideal characteristics for good monitoring of a particular photovoltaic installation. For these reasons, an electronic device connected to the internet of things (IoT) is presented in this paper which manages to measure global radiation in photovoltaic applications. The device developed has been patented in the Spanish Patent and Trademark Office. It presents some features that make it very suitable to measure photovoltaic installations with the advantage of being a low cost and very reliable device. The device has been tested to determine global horizontal irradiance obtaining a correlation coefficient R2 = 0.994.

Laboratory test results of a new developed low-cost and open-source inclinometer based on MEMS technology

2021 ◽  
Author(s):  
Giuseppe Ruzza ◽  
Paola Revellino ◽  
Francesco Maria Guadagno
Keyword(s):  
Laboratory Test ◽  
Open Source ◽  
Electronic Device ◽  
Low Cost ◽  
Rain Gauge ◽  
Real Field ◽  
Landslide Monitoring ◽  
Maximum Displacement ◽  
Laboratory Test Results ◽  
Measuring Module

&lt;p&gt;The stationary or in-place inclinometer is the main high-performance solution in landslide monitoring applications due to its capability of tracking real time displacement at different depth and supporting early warning. Despite that and the general need of data for understanding landslide behaviour, the high cost of in-place inclinometers, in most cases, limit or prevent their use. On this basis, we started developing a low-cost and open source, modular MEMS-based inclinometer that uses multiple Arduino boards as processing units. Although MEMS accelerometers have many advantages in comparison with traditional high-precision electromechanical sensors, they are very sensible to temperature variation (i.e. thermal drifting).&lt;/p&gt;&lt;p&gt;In order to compensating thermal drifting a specific thermal analysis and an associated simple compensation strategy were used. After the mitigation of thermal bias, the electronic devices were designed, built and assembled.&lt;/p&gt;&lt;p&gt;The developed inclinometer system is composed of two main electronic systems: 1) a multiple electronic device (i.e. a MEMS accelerometer, the IMU reading interface and a communication board) installed within each measuring module; 2) an external master control unit, based on the Arduino platform coupled with a dedicated developed interface board. The master unit reads tilt value from each measuring module through a communication interface. This unit was developed to allow interfacing of additional digital or analog sensors (e.g. water content, rain gauge, etc..), and control additional parameters.&lt;/p&gt;&lt;p&gt;A steel casing for measuring components was designed and built. For each measuring unit, a squared-section case, consisting of a 30 cm long tube equipped with 4 elements that allow the installation the instrument within a standard inclinometric tubes, was prepared and assembled.&lt;/p&gt;&lt;p&gt;After system assembling, displacement of the inclinometric column was first simulated by a laboratory test. In particular, we used a supporting frame that allowed to vertically align the modules. The auxiliary frame was specifically designed to drive displacement along a selected axis and to register the maximum displacement at the head of the inclinometric column. In this way, the lower module is kept fixed. This test permitted to obtain a number of different synthetic deformation curves that form a basis for checking the accuracy of the instrumentation measurement. Result obtained highlight the potential use of our system for real monitoring application. The next step will be to install the instrumentation on site to check its operation in real field conditions.&lt;/p&gt;

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