scholarly journals Development of the System for Control of Environmental Parameters in the Aquarium

2019 ◽  
pp. 66-71
Author(s):  
I. Hrihorenko ◽  
S. Hrihorenko
Keyword(s):  
Control System ◽  
Normal Development ◽  
Environmental Parameters ◽  
High Accuracy ◽  
Electrical Circuit ◽  
Factors Affecting ◽  
Measurement Results ◽  
Abnormal Increase ◽  
Basic Parameters ◽  
Reliability Of Measurement Results

The paper considers the solution of the scientific and practical task of developing a system for monitoring environmental parameters in an aquarium from creating a structural diagram and an algorithm to working up to developing a basic electrical circuit. The factors affecting the livelihoods of fish in an aquarium are analyzed, and the main ones that need to be controlled are established. The uncertainty of the measurement results of the established basic parameters of the medium, namely temperature and dissolved oxygen, was calculated, which proved the possibility of ensuring high accuracy and reliability of measurement results obtained using the developed control system. The developed control system allows to ensure the relative measurement error not worse than 0.5%. The need to develop a control system is connec-ted with the fact that in order to ensure the normal development of fish and plants in the aquarium, it is necessary to create an environment that is as much as possible natural. This requires timely temperature control, as well as control of the pH and dissolved oxy-gen, which is possible only with the help of an automatic control system. The system allows the sending of SMS commands for switching on/off the heating and aeration of water in the aquarium, receiving reports on the condition of the heater and the aerator (on/off) and the measured environmental parameters. It is possible to program, for example, sending messa-ges with abnormal increase or decrease in temperature or the suspicious rate of its change. In the course of the work the structural and electrical principles of the control system were created, the algorithm of its work was being compiled, the uncertainty of the measurement of the main parameters of the environment in the aquarium was carried out, which proved the possibility of providing high accuracy and reliability of the results of measurements obtained with the help of the developed control system.

Development of a centralized approach to conducting interlaboratory proficiency tests

2021 ◽  
pp. 428-434
Author(s):  
Светлана Владимировна Габова ◽  
Анастасия Александровна Трусагина ◽  
Михаил Евгеньевич Артёмов
Keyword(s):  
Quality Control ◽  
Control System ◽  
Oil Quality ◽  
Third Party ◽  
Quality Control System ◽  
Proficiency Tests ◽  
Testing Program ◽  
Testing Laboratories ◽  
Measurement Results ◽  
Reliability Of Measurement Results

Важнейшим звеном системы контроля качества нефти являются испытательные лаборатории, от компетентности которых зависит достоверность результатов измерений и эффективность управленческих решений, принимаемых с учетом полученных данных. Одним из способов подтверждения достоверности результатов измерений является проверка квалификации лаборатории посредством ее участия в межлабораторных сличительных (сравнительных) испытаниях (МСИ). В настоящей статье рассмотрены вопросы проведения таких испытаний для лабораторий организаций системы «Транснефть». Описан действующий порядок, предполагающий участие лабораторий в МСИ в регионах своего местонахождения, при этом разработкой и реализацией программы проверки квалификации занимаются сторонние организации - провайдеры МСИ. Такая практика имеет существенные недостатки, не позволяя, в том числе, систематизировать и обобщить результаты МСИ для общей оценки деятельности испытательных лабораторий ПАО «Транснефть». В статье представлен централизованный подход к проведению МСИ в ПАО «Транснефть», устанавливающий единый порядок участия лабораторий в испытаниях с целью осуществления общей оценки квалификации лабораторий, своевременной разработки и реализации предупреждающих и корректирующих мероприятий по улучшению деятельности лабораторий, усовершенствования системы контроля качества нефти на объектах ПАО «Транснефть». The most important link in the oil quality control system are testing laboratories, the competence of which determines the reliability of measurement results and the effectiveness of management decisions based on the data obtained. One way to confirm the validity of measurement results is to verify the laboratory qualifications through its participation in interlaboratory proficiency (comparative) tests (IPT). This article considers the issues of such tests for the laboratories of Transneft system entities. The current procedure is described, which involves the participation of laboratories in the IPT in the regions of their location, while the development and implementation of the proficiency testing program is carried out by third-party IPT provider organizations. This practice has significant drawbacks, not allowing, among other things, to systematize and summarize the results of IPT for an overall assessment of the activities of Transneft PJSC’s testing laboratories. The article presents a centralized approach to conducting IPT in Transneft PJSC, which establishes a unified procedure for the participation of laboratories in tests in order to implement an overall assessment of laboratory qualification, timely development and implementation of preventive and corrective measures to improve the performance of laboratories and improve the oil quality control system at the Transneft PJSC facilities.

A Novel Vertical Lift Machine and its Precise Pose Control

2014 ◽  
Vol 989-994 ◽  
pp. 3105-3109
Author(s):  
Xiao Bo Liu ◽  
Xiao Feng Wei ◽  
Xiao Dong Yuan ◽  
Wei Ni
Keyword(s):  
Control System ◽  
Theoretical Analysis ◽  
Control Method ◽  
High Accuracy ◽  
Inverse Kinematic ◽  
Design Model ◽  
Pose Control ◽  
Vertical Lift ◽  
Position And Orientation ◽  
Control Principle

This paper deals with the design and theoretical analysis on a novel vertical lift machine which can vertically lift above 700 kg load up to 3.2 meters above the floor and located the load with high accuracy of position and orientation. Firstly the design model based on the installment demands of line-replaceable units (LRUs) is constructed. Then theoretical analysis including the number of degree of freedom of the lift machine, the inverse kinematic, the control principle, the lift platform pose error and the precise pose control method are conducted in the article. The validity of the design model and the effectiveness of the precise pose control system are confirmed by experiments using a prototype lift machine.

Floristic study and assessment of the environmental factors governing the distribution of riparian plants in the Zat sub-Basin: Tensift Watershed, Morocco

2020 ◽  
Vol 45 (2) ◽  
pp. 7900-7915
Author(s):  
Mostakim Lahcen ◽  
Fetnassi Nidal ◽  
Ghamizi Mohamed
Keyword(s):  
Environmental Factors ◽  
Pearson Correlation ◽  
Ecological Status ◽  
Environmental Parameters ◽  
Quality Parameters ◽  
Phosphorus Concentration ◽  
Factors Affecting ◽  
Riparian Plants ◽  
Emergent Plants ◽  
Significant Difference

Measuring the phytodiversity and determining environmental factors affecting the abundance and distribution of riparian plants of Zat sub-basin in Morocco were carried out in this study. A hypothesis was tested whether there is any statistically significant difference in environmental parameters and plants communities among the Zat River and its tributaries. For this purpose, water quality parameters such as temperature, pH, salinity, electrical conductivity, Dissolved Oxygen, nitrate and phosphorus concentration, and riparian plants diversity were estimated at 17 stations along the Zat River and its tributaries during the periods (2018 and 2019). The Canonical Correspondence Analysis (CCA) and Pearson correlation were preformed to assess the relationship between environmental parameters, and the distribution and abundance of riparian plants inventoried. The presence of 113 species was recorded, distributed between 43 families and 97 genera, 9 of which were floating-leaved, 24 submerged, and 80 emergent plants. The rare and threatened species inventoried were represented by 7 taxa, whereas 6 species are reported as endemic. Raunkiaer classification showed a dominance of therophytes (38.39%) over the other groups. According to CCA, the abiotic parameters (DO, elevation, salinity and nitrate concentration) were statistically significant parameters governing the distribution and abundance of the riparian plants inventoried. The results obtained reveal the state of the riparian vegetation in the Zat subBasin, therefore we can consider them as a reliable component for the assessment of the ecological status of the aquatic environment.

scholarly journals UNCERTAINTY OF MEASUREMENT RESULTS IN FUEL ANALYSES

2002 ◽  
Vol 1 (2) ◽  
Author(s):  
Paulo Roberto Guimarães Couto ◽  
Ilse Maria Guilhermino Lemos
Keyword(s):  
Mutual Recognition ◽  
Metrological Reliability ◽  
Uncertainty Of Measurement ◽  
Measurement Results ◽  
Judicial Ruling ◽  
Quality Of Products ◽  
Reliability Of Measurement Results

The result of a measurement serves as a parameter in a variety of applications, such as: the sale of products; the inspection of materials in relation to specifications/ limits set by a standard; providing support for a judicial ruling; improving the specific quality of products; estimating profitability and making comparisons with a view to mutual recognition between metrology laboratories and systems. The aim of this work is to demonstrate the relevance and applications of the ISO GUM 95 in the fuel analyses conducted by the LABCOM at the EQ/UFRJ, presenting results tables and discussions. The paper further discusses the strategic importance of metrological reliability of measurement results and of the actions of a laboratory within the context of the science of metrology in Brazil.

The Operation Monitoring Condition of the Production Machinery and Facilities Using the Tools of Technical Diagnostics

2013 ◽  
Vol 308 ◽  
pp. 105-109 ◽  
Author(s):  
Stanislava Šoltésová ◽  
Petr Baron
Keyword(s):  
Professional Practice ◽  
Main Tool ◽  
Diagnostic Tools ◽  
Technical Diagnostics ◽  
Effective Management ◽  
New Methods ◽  
Operation And Maintenance ◽  
Measurement Results ◽  
Reliability Of Measurement Results ◽  
Monitoring Behavior

Technical diagnostics is currently the most important factor of reliability, dealing with forms of disorder manifestation, developing of disorders, their detection and working principles. As tool it has great value in operation and maintenance of facilities. It denotes great interest not only in scientific sphere but also in sphere of results application in the new developing methods and their using in professional practice. Using methods of technical diagnostics taking into account the reliability of measurement results both with new methods IT is one of the main tool for effective management of facilities, elimination of unacceptable conditions and other aspects. The article describes the application of technical and diagnostic tools on workplaces for monitoring behavior of the production machines and facilities.

The Design and Implementation of Tri-Axial Magnetometer

2013 ◽  
Vol 663 ◽  
pp. 632-637
Author(s):  
Jia Wen Liu ◽  
Qing Hua Zhou ◽  
Li Li ◽  
Tao Li
Keyword(s):  
Real Time ◽  
Peak Power ◽  
High Sensitivity ◽  
High Accuracy ◽  
Low Power Consumption ◽  
Serial Port ◽  
Time Curve ◽  
Data Process ◽  
Transfer Unit ◽  
Measurement Results

The design, implementation, and testing of a tri-axial magnetometer instrument are introduced. The design is based on the MAG3110 chip. This chip has the properties of low power consumption and high resolution in the conventional mode. It runs with the peak power at 86.4μJ and the resolution of 0.1μT. The 12C5A60S2 MCU is chose as the data process and transfer unit. The data from the MCU is received by the principal computer through serial port. The measurement results, including the strength and the three component of magnetic field are displayed on PC by real-time curve through a VB programmed interface. The comparison between the measurements and the theoretical values shows that this instrument has the characteristic of high accuracy, high sensitivity and real-time display.

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