scholarly journals MATHEMATICAL MODELS PRODUCTIVITY OF CLUSTER SYSTEM BASED ON RASPBERRY PI 3B+

2021 ◽  
Vol 1 (1) ◽  
pp. 46-56
Author(s):  
S. M. Babchuk ◽  
Т. V. Humeniuk ◽  
I. T. Romaniv
Keyword(s):  
Mathematical Models ◽  
Computer System ◽  
Electricity Consumption ◽  
Cluster System ◽  
Small Cluster ◽  
Raspberry Pi ◽  
Cooling Systems ◽  
Complex Criterion ◽  
Cluster Computer ◽  
Computing Element

Context. High-performance computing systems are needed to solve many scientific problems and to work with complex applied problems. Previously, real parallel data processing was supported only by supercomputers, which are very limited and difficult to access. Currently, one way to solve this problem is to build small, cheap clusters based on single-board computers Raspberry Pi. Objective. The goal of the work is the creation of a complex criterion for the efficiency of the cluster system, which could properly characterize the operation of such a system and find the dependences of the performance of the cluster system based on Raspberry Pi 3B+ on the number of boards in it with different cooling systems. Method. It is offered to apply in the analysis of small cluster computer systems the complex criterion of efficiency of work of cluster system which will consider the general productivity of cluster computer system, productivity of one computing element in cluster computer system, electricity consumption by cluster system, electricity consumption per one computing element, the cost of calculating 1 Gflops cluster computer system, the total cost of the cluster computer system. Results. The developed complex criterion of cluster system efficiency was used to create an experimental cluster system based on single-board computers Raspberry Pi 3B+. Mathematical models of the dependence of the performance of a small cluster system based on single-board computers Raspberry Pi 3B+ depending on the number of boards in it with different cooling systems have also been developed. Conclusions. The conducted experiments confirmed the expediency of using the developed complex criterion of efficiency of the cluster system and allow to recommend it for use in practice when creating small cluster systems. Prospects for further research are to determine the weights of the constituent elements of the complex criterion of efficiency of the cluster system, as well as in the experimental study of the proposed weights.

Raspberry PI Cluster System for Computer Generated Holography

2021 ◽  
Author(s):  
Guangyu Zhang ◽  
Youchao Wang ◽  
Daoming Dong ◽  
Timothy Wilkinson
Keyword(s):  
Cluster System ◽  
Raspberry Pi ◽  
Computer Generated Holography

scholarly journals Raspberry Pi, conectividad y programación mediante puertos GPIO

2020 ◽  
pp. 1-13
Author(s):  
Franco Gabriel Caballero-Julián ◽  
Maricela Morales-Hernández ◽  
Eric Mario Silva-Cruz ◽  
Diego Gabriel Caballero-Cantarell
Keyword(s):  
Data Acquisition ◽  
Computer System ◽  
Low Voltage ◽  
Electronic Devices ◽  
Computer Systems ◽  
Raspberry Pi ◽  
Electronic Systems ◽  
And Control

Today, there is an innumerable amount of electronic devices and computer systems that are oriented as platforms for the management of information through the network; manipulating data and at the same time, performing tasks using low voltage electronic signals. They can activate, deactivate or control a device or a system using sensors. In this context, the Raspberry Pi platform has an interface composed of a set of pins (GPIO) through which voltage signals can be accessed, and can interact with other electrical and electronic systems for data acquisition and control. This article aims to facilitate access to the Raspberry Pi platform from its installation, configuration, to its programming of the ports through examples and instructions, considering the platform as a computer system. The interest of the authors is to provide the reader with the tools, so that the programming of specific applications is the new challenge.

scholarly journals Supporting the planning of assembly works using computer techniques

2018 ◽  
Vol 27 (3) ◽  
pp. 291-299
Author(s):  
Maciej Banach ◽  
Roman Marcinkowski
Keyword(s):  
Mathematical Models ◽  
Computer System ◽  
Functional Structure ◽  
Assembly Task ◽  
Lifting Equipment ◽  
Selection Of

The paper presents the selected aspects of the construction of a tool for planning the work of assembly machines in the construction of prefabricated cubature buildings. The solution of the problem is based on mathematical models supporting both the selection of transport means for carrying out the transport task and the selection of lifting equipment to perform the assembly task. The functional structure of the developed tool, the scope of research and a description of the planner’s cooperation with the computer system are presented.

scholarly journals Design and Implementation LETS (Low Power Cluster Server) for Sustaining UMKM during Pandemic

2021 ◽  
pp. 77-82
Author(s):  
Hanugra Aulia Sidharta ◽  
Felix Filipi ◽  
Rafli Attala Jaskandi ◽  
Febrian Nugroho
Keyword(s):  
Low Power ◽  
Economic Crisis ◽  
Web Server ◽  
Small Cluster ◽  
Raspberry Pi ◽  
Movement Restriction ◽  
Design And Implementation ◽  
Cluster Server ◽  
People Movement ◽  
International Border

Covid pandemic is spreading since end 2019 arround globe, this resulting several countries suffer economic crisis. Due people movement restriction and international border is closed, impact halting on export and import. Indonesia with 267,7 million people manage to overcome global crisis during 1998 and 2008 with encourage small and local industry. According data from BPS, SME support 60% GDP with Rp 7,7 Billion and provide 85 million employment. To sustain SME during customer shifting behavior, we propose small cluster server called as LETS. LETS is modular, and composed with several Raspberry Pi 4, also consume few energies compared with traditional server. Although Raspberry Pi 4 is small size with few limitations, with lightweight application (ansible, k3s, and nginx) it can provide web server service. LETS provide handling traffic up to 742 simultaneus requests, which sufficient of SME requirement.

scholarly journals Experimental Study to Performance Improvement of Vapor Compression Cooling System Integrated Direct Evaporative Cooler and Condenser

2018 ◽  
Vol 215 ◽  
pp. 01017
Author(s):  
Arfidian Rachman ◽  
Lisa Nesti
Keyword(s):  
Energy Use ◽  
Cooling System ◽  
Electricity Consumption ◽  
Weather Condition ◽  
Heat Removal ◽  
Cooling Capacity ◽  
Cooling Power ◽  
Cooling Systems ◽  
Evaporative Cooler ◽  
And Performance

For areas with very hot and humid weather condition increased latent and sensible load are a major problem in cooling systems that will increase compressor work so that electricity consumption will also increase. Combined condenser with direct evaporate cooling will increase the heat removal process by using an evaporative cooler effect that will increase the efficiency of energy use. This paper presents the study of the use of evaporator cooling and condenser. This paper mainly calculated energy consumption in steam compression cooling systems and related problems. From the results of this study, the use of condensers with evaporative cooling, power consumption can be reduced to 46% and performance coefficient (COP) can be increased by about 12%, with 1,2 kW cooling capacity.

scholarly journals Review of Dew Point Evaporative Cooling Technology for Air Conditioning Applications

2021 ◽  
Vol 11 (3) ◽  
pp. 934
Author(s):  
Anna Pacak ◽  
William Worek
Keyword(s):  
Porous Materials ◽  
Water Distribution ◽  
Evaporative Cooling ◽  
Electricity Consumption ◽  
Dew Point ◽  
Coefficient Of Performance ◽  
Cooling Systems ◽  
Climate Conditions ◽  
Current State ◽  
Indirect Evaporative Cooling

Indirect evaporative cooling has the potential to significantly improve the natural environment. It follows from a significant reduction in electricity consumption in the hot period, and hence lower operating costs for cooling systems. This paper presents the current state of knowledge and research directions on dew point indirect evaporative cooling. It was found that researchers focus on the development of dew point indirect evaporative coolers (DPIEC) by improving its design, geometry, water distribution, and new porous materials implementation. To evaluate the performance of new types of DPIEC, different methods are used by the scientists. Finally, optimized devices are studied in terms of their performance in different systems, like hybrid and desiccant systems, considering different climate conditions. Potential directions of development of evaporative technologies were indicated, such as increasing the coefficient of performance of solid desiccant evaporative cooling systems, developing novel geometry, and efficient water distribution, including development of porous materials.

scholarly journals Implementation of IOT Based Smart Energy Meter in Oman

2020 ◽  
Author(s):  
Hassan Ali Alajmi ◽  
Raid Rashid Ali Alsaidi ◽  
Omar Abdullah Sultan AL-shibli ◽  
Senthil Ramadoss
Keyword(s):  
Monitoring System ◽  
Web Application ◽  
Low Cost ◽  
Electricity Consumption ◽  
Raspberry Pi ◽  
Energy Meter ◽  
Exciting Opportunity ◽  
Long Time ◽  
The Cost ◽  
Python Programming

Managing the energy efficient and conserving it intelligently for appliances is very much important. On the other side, it may be possible events mistake cause while reading on energy meter, monitoring and keeping track of your electricity consumption for verification is a tedious task today. Our main objective of measuring the power consumption at homes using IOT with raspberry pi during period time, which can be controlled as well monitored through the raspberry pi across the IOT. We used Python programming language to control raspberry pi. It's based on raspbian which is operating system for all models of the raspberry Pi that subject to linux system. As we say before raspberry pi has inputs and we use it for connecting the supply, energy meter and load such as a lamp or Drill. The energy meter is connected to the raspberry pi. This allows user to easily check the energy usage along with the cost charged online using a simple web application connecting to Wi-Fi. Thus, the energy meter monitoring system allows consumer to effectively monitor electricity meter readings and bill amount in an easy way. It presents a low cost and flexible energy meter monitoring system using IOT. In addition, we use camera which is called camera pi. Camera pi takes picture from meter reading and communicates to consumer via email. All information on the energy meter screen will be taken by raspberry pi module. Using this data, the raspberry pi will calculate the bill amount then send to the consumer by email. Finally, this project will help for the proper and accurate reading of the billing process automatically. Also, it enables consumer to save the money for a long time. This technology offers new and exciting opportunity to reduce the work of workers.

scholarly journals Computare Vision Berbasis Camera dan Mini PC untuk Identifikasi Kecacatan Penutup Kemasan Minuman Kaleng

2016 ◽  
Vol 12 (1) ◽  
pp. 1
Author(s):  
Andrizal - ◽  
Anton Hidayat ◽  
Roza Roza Susanti ◽  
Rivanol Chadry
Keyword(s):  
Decision Making ◽  
Computer System ◽  
Visual Inspection ◽  
Raspberry Pi ◽  
Inspection System ◽  
Inner Surface ◽  
Web Camera ◽  
Automatic Visual Inspection

Visual inspection becomes an important role when determining the quality of the conditions of production. Manual visual inspection carried out by relying on human senses, especially the eyes, the weakness is perspective and human's perspective may be different from each other, the quality result can be different. Utilization of the camera as a sensor and computer system as a major component of decision-making is the latest technology that is used as an automatic visual inspection replace human tasks. This research aims to make a visual inspection system that utilizes a web camera and mini PC (personal mini computare) Raspberry PI to identify disability packaging beverage cans. The system that is made has been tested to identify defects tin side of the inner surface of the cover packaging of canned drinks without color or silver color. The result is, the system is able to distinguish defective cans and the cans that are not defective with an accuracy of 66, 67%. We hope this research can be developed at a later stage so that automatic a visual inspection can be realized.

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