scholarly journals DEVELOPMENT OF A MICROPROCESSOR CONTROLLER FOR MEASURING THE LINEAR MOVEMENT OF MOVING BODIES OF VIBRATION EXECUTIVE MECHANISMS

2021 ◽  
pp. 71-84
Author(s):  
Oleksandr Voznyak ◽  
Shtuts Andrii ◽  
Mykhailo Zamriі
Keyword(s):  
Measurement Problem ◽  
Optimal Solution ◽  
Measuring Instruments ◽  
Programming System ◽  
Digital Information ◽  
Measuring Instrument ◽  
Address Space ◽  
Measuring Device ◽  
Free Position ◽  
Linear Movement

Control and measuring equipment is one of the first places in terms of breadth and efficiency of MP-tools. The microprocessor device (MPP) built into the measuring device expands its possibilities, adds new qualities for vibrating machines. Such a device is called programmable (PrVP); WFP can perform the following functions: - control (issuance of control information to all components of the device, reconfiguration of the structure of the device in case of failures of individual units, the formation of control signals to display information, switching different control algorithms); - control of efficiency, reliability of results, diagnostics and localization of malfunctions; - digital information processing (calibration of the device, calculation of errors, determination of minimum and maximum values of parameters, enumeration of parameters, calculation of instantaneous power and signal energy, linearization, information compression, approximation, scaling, normalization, correction, calculation of tolerances, average values, logs , exponentiation, root extraction, transformation of a form from a fixed comma into a floating form and back); - organization of communication with the human operator (exemption from routine operations, such as adjustment, calculation of deviations, etc.; presentation of information in a convenient and accessible for human view form; software support for a functional keyboard that replaces individual control knobs; ensuring the choice of conflict-free position of switches in devices with difficult control); - connection with the system and other devices (implementation of various interface functions, conversion of data formats, adaptation to various input signals). To perform these functions requires the development of an appropriate structure and software MPU. You can implement the following structures for vibrating machines: - universal micro-computer with standard or special programming system; the units of the measuring instrument are connected as external devices - using the address space allocated for external devices; - micro-computers with limited capabilities (for example, limited address space - part of the address bus is given to the addresses of the units of the measuring instrument, while the capacity of RAM is reduced); - special purpose - on the basis of programmable LSI or sectional MP-sets with special software or firmware. The structure of the first type is expedient at development of difficult multipurpose measuring means. The second has fewer features, but requires less hardware, it is useful when building measuring instruments with a small number of blocks and measuring functions. The structure of the third type is aimed at the optimal solution of the measurement problem, requires software development (command systems, microcommands).

The measurement problem of calibration of measuring instrument under specified conditions

2021 ◽  
pp. 9-15
Author(s):  
Sergey F. Levin
Keyword(s):  
Risk Assessment ◽  
Risk Management ◽  
Measurement Problem ◽  
Parametric Identification ◽  
Correction Function ◽  
Measuring Instruments ◽  
Measuring Instrument ◽  
Mathematical Apparatus ◽  
Second Stage ◽  
Assessment Techniques

The problem of calibration of measuring instruments for given conditions based on the correction function is considered as a measurement problem of structural-parametric identification of the calibration diagram. It is shown, that the correction function allows at the first stage to obtain a ratio for correcting the readings, and at the second stage to obtain a corrected measurement result, it is necessary to identify the probability distribution of possible deviations from it. An example of solving the measurement problem of calibration for given conditions is given. Negative aspects of the practice of calibration of measuring instruments are noted: carrying out calibration under normal conditions according to the methods of verification of measuring instruments; presentation of calibration results by tables of joint readings of measuring instruments and standards; the presence in the calculations of the calibration diagram of significant restrictions on the mathematical apparatus of the «Guidelines for the expression of measurement uncertainty», specified by ISO/IEC 31010:2019 “Risk management – Risk assessment techniques”.

scholarly journals The Manufacturing of Low Temperature Measuring Devices Using a PT-100 Sensor Based on ATmega328 Microcontroller

2020 ◽  
Vol 21 (1) ◽  
pp. 26
Author(s):  
Bhakti Hardian Yusuf ◽  
I Made Satriya Wibawa ◽  
I Ketut Putra
Keyword(s):  
Low Temperature ◽  
Coefficient Of Determination ◽  
Measuring Instruments ◽  
Measured Temperature ◽  
Measuring Instrument ◽  
Reference Measuring ◽  
Measuring Device ◽  
Temperature Measuring ◽  
Measurement Results ◽  
Reference Measuring Instrument

A low temperature measuring device has been successfully developed using a microcontroller-based PT-100 sensor ATmega328. The temperature is measured using a PT-100 sensor, as the main processor using the ATmega 328 microcontroller, and the measured temperature is displayed on a 2x16 LCD. The results of the calibration at a temperature of 77 - 300 K against the reference measuring instrument obtained that, the ratio of the measured temperature between the reference measuring instrument and the measuring instrument made was 0.9893 ± 3.69 K and the coefficient of determination R2 = 0.9987. This indicates that the measurement results of the measuring instruments made have an accuracy level of 98.93% and a precision of 99.87%. Keywords: Low temperature, PT-100 Sensor, ATmega328 Microcontroller, LCD 2x16

scholarly journals Independent Urine Measurement Based on Internet of Things

2021 ◽  
pp. 462-474
Author(s):  
Tri Hapsari Retno Agustiyowati ◽  
Sansri Diah KD ◽  
. Taryudi
Keyword(s):  
Internet Of Things ◽  
Flow Rate ◽  
Peak Flow ◽  
Measuring Instruments ◽  
P Value ◽  
Measuring Instrument ◽  
Peak Flow Rate ◽  
Measuring Device ◽  
Urology Clinic

This study aims to create an independent urine measuring instrument based on the internet of things (IoT). This study was to see the differences in uroflometric measurements using an independent urine measuring based IoT tool compared to uroflometry in the urology clinic. The sampling method used was consecutive sampling with a total of 32 respondents. Uroflometry measurements were carried out twice, first using an independent urine measuring device based on the IoT, secondly using the standard uroflometric peak flow rate examination in the urology clinic. The results of measuring the average amount of urine per second using an independent urine measuring device based on IoT 22.22 ml / second, the average peak flow rate using uroflometry in the urology clinic is 23.97 ml / second, this shows that an independent urine measuring instrument based on IoT is not significantly different from uroflometry in urology polyclinic with a p value of 0.411, which indicates Ho was accepted, meaning there was no difference between the mean amount of urine per second and the average peak flow rate using uroflometry in the urology clinic. This study therefore concludes that an independent urine measuring devise based on the IoT instrument is effective for measuring urine emission per second. Suggestion: Follow up on the patent and legality of measuring instruments   Keywords: independent urine measuring instrument, internet of things(IoT), uroflometry, urethral stricture

scholarly journals Analisa Keakuratan Kadar Glukosa Darah Menggunakan Clarke-Error Grid Analisis pada Alat Ukur Non-invasive menggunakan Sensor Photoacoustic

Lontara ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 125-135
Author(s):  
Usman Umar ◽  
Risnawaty Alyah ◽  
Imran Amin
Keyword(s):  
Blood Glucose ◽  
Measurement Data ◽  
Blood Cholesterol ◽  
Measuring Instruments ◽  
Measuring Instrument ◽  
Measuring Device ◽  
Glucose Levels ◽  
Non Invasive ◽  
Blood Glucose Levels ◽  
Invasive Method

Blood glucose is a very important element in the human body, but if it is deficient or excessive, it can cause chronic disease that can lead to death. To prevent this, it is necessary to monitor cholesterol and blood glucose levels regularly, at this time the tool for measuring blood glucose levels is still an invasive method by taking a blood sample at the fingertip by injuring it. This study aims to develop a non-invasive blood glucose measuring device using a Photoacoustic Spectroscopy sensor in the range of values from a laser pulse source (λ = 650 nm) which can detect glucose signals in the blood. The method of developing this research is by designing a non-invasive measuring instrument and measuring blood glucose levels in male and female participants to create a linearity equation between blood glucose levels and the output voltage from the sensor, then mathematically obtained a polynominal equation to convert the voltage to values. blood glucose level. Validation of measuring instruments designed by comparing invasive measuring instruments as a reference, using the Clarke EGA to determine accuracy based on the classification of values of blood glucose and blood cholesterol levels based on reference. The results of the Clarke EGA analysis show that all measurement data is in Zone A so that the measuring instrument with a photoacoustic sensor can be accepted.

DESIGN OF THE VIRTUAL DEVICE FOR THE SIGNAL SPECTRUM CALCULATION IN THE LABVIEW ENVIRONMENT

2019 ◽  
Author(s):  
Tossenko O.M.
Keyword(s):  
Virtual Instrument ◽  
Spectral Characteristics ◽  
Spectral Composition ◽  
Automated System ◽  
Signal Spectrum ◽  
Measuring Instruments ◽  
Specific Information ◽  
Measuring Device ◽  
Virtual Device ◽  
Graphical Tool

The development of measuring instruments requires a specialist to know the principles of operation of advanced measuring systems. This article describes guidelines for creating a virtual appliance in LabVIEW. LabVIEW (Laboratory Virtual Instrument Engineering Workbench) is a graphical application programming environment used as a standard tool for measuring, analyzing their data, further ma­ naging devices and objects under study. LabVIEW language is not like other programming languages. It does not create a program, but a virtual tool, designed not only for the simulation of certain processes, but also for the management of hardware and the study of real physical objects. The article deals with the task of designing application software for a specific information-measuring device, analyzes the capabilities of the LabVIEW environment for spectral analysis of various signals, outlines the basic principles and techniques of programming within the framework of the LabVIEW graphical environment during the basic stages of development. The procedure for creating a virtual device is described, which allows to evaluate the spectral composition of the signals, presents a graphical code of execution (diagram) to the program and a graphical tool interface of the virtual device. A number of basic elements used to develop the program are described. The simplicity of the graphic designs, the ease of installation on the field of the program, the clarity and readability of the program — all of which makes LabVIEW preferred over other languages of programming. In most cases, the experiment is the only source of reliable information. And the result is achieved much faster than the methods of "pure" theory. The article substantiates the effectiveness of using a development tool that allows to obtain a software product and ensure the fulfillment of all the basic functions of an automated system. Developing a software algorithm for calculating statistical parameters will help engineering students understand the order of determining spectral characteristics and their place in the structure of experimental research.

METHOD FOR ESTIMATING ERRORS IN MEASURING INSTRUMENTS BY THE SPACE CATALOGUE ORBITS

2018 ◽  
pp. 76-84
Author(s):  
K. V. Sorokin ◽  
E. A. Sunarchina
Keyword(s):  
Dynamic Model ◽  
New Method ◽  
Measuring Instruments ◽  
Measuring Instrument ◽  
Software Complex

Improvement of orbits precision is one of the most important tasks of space surveillance catalogue maintenance. The solution of this problem is directly related to an adequate consideration of the errors of the coordinate information from the measuring instruments. The article consideresd a new method for estimating the precision of measuring instruments on the catalog orbits. To carry out such analysis, in PJSC «VIMPEL» special technological program was created. Main results of a study of radar errors with orbits of space surveillance catalogue was presented. Also, the results were compared with data of measuring instrument's calibration software complex. This software complex provides determination of satellite's position with errors less than 10 m. A new dynamic model of measuring instrument errors is proposed.

Design for New Gear Measuring Centers

2016 ◽  
Vol 693 ◽  
pp. 1562-1566
Author(s):  
Xiao Sheng Wang ◽  
Xue Bin Liu ◽  
Wei Zhao
Keyword(s):  
Coordinate System ◽  
Measuring Instruments ◽  
Single Measure ◽  
Measuring Device ◽  
Complex Operation

For existing disadvantage in gear measuring instruments, such as single measure, complex operation, expensive, and so on, in the paper primary and secondary coordinate system are established based on the theoretic of positioning coordinates and gear, then the introduction of feedback measuring device can be integrated in the design of a manufacturing new gear during the measurement center.

“Who is there that doesn't calculate?” Homo economicus as a measuring instrument in non-market accounting

2021 ◽  
pp. 1-21
Author(s):  
Oliver Schlaudt
Keyword(s):  
Measuring Instrument ◽  
Narrow Sense ◽  
Homo Economicus ◽  
Measuring Device

Abstract Contemporary approaches to “non-market accounting” depend critically on methods of “monetization”, i.e. determining prices for goods outside the market. Monetization constitutes a case of economic measurement in a narrow sense that has not yet been analysed in the literature on measurement in economics. Monetization, I will argue, uses homo economicus – originally created as a model to explain existing prices – as a measuring device, one that generates new prices for goods that are not traded on markets. Homo economicus, though long contested in microeconomics, is thus enjoying a dubious revival in non-market accounting.

Half division two-dimensional method for simple sinusoidal quantities parameters accurate measurement

2021 ◽  
pp. 16-21
Author(s):  
Kirill Yu. Solomentsev ◽  
Vyacheslav I. Lachin ◽  
Aleksandr E. Pasenchuk
Keyword(s):  
Measuring Instruments ◽  
Measured Signal ◽  
Two Dimensional ◽  
Measuring Device ◽  
New Approach ◽  
Precision Measuring ◽  
Useful Signal ◽  
Midpoint Method ◽  
Order Of Magnitude ◽  
Current Measuring

Several variants of half division two-dimensional method are proposed, which is the basis of a fundamentally new approach for constructing measuring instruments for sinusoidal or periodic electrical quantities. These measuring instruments are used in the diagnosis of electric power facilities. The most general variant, called midpoint method, is considered. The proposed midpoint method allows you to measure much smaller than using widespread methods, alternating currents or voltages, especially when changing the amplitude of the measured signal in very wide ranges, by 1–2 orders of magnitude. It is shown that using the midpoint method it is possible to suppress sinusoidal or periodic interference in the measuring path, in particular, to measure small alternating current when sinusoidal or periodic interference is 1–2 orders of magnitude higher than the useful signal. Based on the results of comparative tests, it was found that the current measuring device implementing the midpoint method is an order of magnitude more sensitive than the currently used high-precision measuring instruments.

scholarly journals The Contribution of Workload and Stress towards Burnout in Special Needs Teachers

2021 ◽  
Author(s):  
Bakhitah Jihan Wijaya ◽  
Endang Prastuti
Keyword(s):  
Special Needs ◽  
Maslach Burnout Inventory ◽  
Measuring Instruments ◽  
Measuring Instrument ◽  
Students With Special Needs ◽  
Stress Theory ◽  
And Coping ◽  
Stress Measuring ◽  
Analysis Models ◽  
Effective Contribution

This study evaluates the effect of workload and coping stress in special needs teachers, and considers the probability of burnout. 68 special needs teachers in Malang form the basis of this study and several measuring instruments were used, including the Maslach Burnout Inventory (MBI) developed by Maslach, the NASA-TLX developed by Sandra, and a coping stress measuring instrument which refers to the coping stress theory by Lazarus and Folkman. This study used the descriptive quantitative method, while the Pearson Product Moment correlation and Corrected Item Total were used to test the item discrimination index. Alpha Cornbach was used to test the reliability. Descriptive and double linier regression analysis models were used. The results show that (1) there is an effect of workload towards burnout (2) there is an effect of coping stress towards burnout (3) there is an effect of workload and coping stress toward burnout with 22.44% effective contribution. Keywords: coping stress, workload, burnout, teacher of students with special needs

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