scholarly journals Diseño de interfaz de control y adquisición de datos para un prototipo didáctico de refrigeración

2019 ◽  
pp. 1-7
Author(s):  
Fernando Chavarría-Domínguez ◽  
Isidro Jimenez-Silva ◽  
Fernando Hernandez-Barabata ◽  
Hugo Noble-Perez
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
Polynomial Regression ◽  
Process Variable ◽  
Signal Acquisition ◽  
Laboratory Equipment ◽  
Labview Software ◽  
System A ◽  
Power Stage ◽  
And Control

The main objective of this work is to present the design and construction of a control system and data acquisition for a didactic refrigeration prototype, the didactic prototype consists of an evaporation cooling cycle in which it is important to know the voltage variables, current in the compressor, as well as pressure and temperature at each stage of the cycle, in order to understand the thermodynamic phenomena that occur in its operation. The data acquisition and control system reads, registers and displays the voltage, current, temperature and pressure variables on a machine-man interface, in turn it controls the operation of the prototype compressor and fan, when some process variable exceeds the limits permissible. In this system we use the Arduino platform, pressure, voltage, temperature and current sensors as part of the signal acquisition and conditioning system, as a virtual instrumentation environment the LabVIEW software, and a relay module as a power stage to control the outputs of the system. A polynomial regression of 3 orders was used to condition the voltage sensor readings. To verify the operation of the data acquisition system, the readings were compared against measurements of calibrated laboratory equipment.

Design of a Flexible Data Acquisition and Control System

1995 ◽  
Author(s):  
T. Gary Yip ◽  
Dennis Loh
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
Automatic Testing ◽  
Automatic Data ◽  
System A ◽  
Custom Design ◽  
Data Volume ◽  
Signal Processors ◽  
And Control ◽  
Automatic Data Acquisition

Abstract Automatic data acquisition and control have become an indispensable part of engineering but many data acquisition and control equipments remain relatively inflexible and cumbersome for most engineering applications. Hence, engineers often need to custom design and build their data acquisition and control system to support their in-house automatic testing and monitoring equipment. This project investigates the design fundamentals and guidelines in setting up a flexible data acquisition and control system. A flexible data acquisition and control system (FDACS) is defined as one which possesses such characteristics as the ease of implementation, the ease of upgrading system’s capability (e.g. data volume and control channels) and the ability for information sharing. An experimental data acquisition system is used as the platform to facilitate the study. It consists of an IBM compatible personal computer, a remote host microprocessor and seven signal processors. Using this implementation, the system is able to provide up to 28 digital I/O lines, 28 analog input lines, 42 digital output lines and an average execution time per instruction of 1 ms.

MICROPROCESSOR-CONTROLLED MINI-ENVIRONMENTAL CHAMBERS CAPABLE OF SUBFREEZING TEMPERATURES IN CONSTANT OR TIME-VARYING TEMPERATURE REGIMES

1998 ◽  
Vol 130 (1) ◽  
pp. 91-104 ◽  
Author(s):  
D.R. Gray ◽  
F.W. Ravlin ◽  
J.A. Logan
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
Ethyl Alcohol ◽  
Minimum Temperature ◽  
Thermodynamic Characteristics ◽  
Time Varying ◽  
System A ◽  
Temperature Regimes ◽  
Environmental Chambers ◽  
And Control

AbstractA set of six microprocessor-controlled mini-environmental chambers (0.04 m3 each) was designed, built, and tested. Chambers are capable of subfreezing temperatures (less than −10 °C) and can operate under constant or time-varying temperature regimes. Chambers are cooled by circulating ethyl alcohol from a reservoir chilled by an immersion cooler. Heat is provided by 17-W cartridge heaters. Temperatures are independently controlled by a single IBM 8088 computer instructing a data acquisition and control system. A single photoperiod is maintained by a commercial timer activating two miniature light bulbs in each chamber. Chamber temperatures were within 0.5 or 0.75 °C of the set temperature 65 or 94% of the time, respectively, during a 39-d test period. Minimum temperature capabilities were estimated for a variety of chamber configurations by an examination of the thermodynamic characteristics of the system.

scholarly journals VILNIUS ADVANCED-SURFACE MOVEMENT GUIDANCE AND CONTROL SYSTEM (A-SMGCS) SAFETY OBJECTIVES / VILNIAUS AERODROMO AUTOMATIZUOTOS ANTŽEMINIO EISMO STEBĖJIMO IR KONTROLĖS SISTEMOS SAUGOS TIKSLŲ ANALIZĖ

Aviation ◽  
2012 ◽  
Vol 16 (4) ◽  
pp. 130-135
Author(s):  
Vaidotas Kondroška ◽  
Jonas Stankūnas
Keyword(s):  
Control System ◽  
System Analysis ◽  
Flight Safety ◽  
Frequency Of Occurrence ◽  
Surface Movement ◽  
Safety Requirements ◽  
Methods Of Determination ◽  
Guidance And Control ◽  
System A ◽  
And Control

This work reviews the innovative and progressive methods of determination and analysis of safety objectives using Vilnius A-SMGCS example. The aim of the analysis is to determine how failures in this system could affect flight safety in Vilnius aerodrome. Identified safety objectives will limit the frequency of occurrence of hazards enough for the associated risk to be acceptable, and will ensure that appropriate mitigation means are reflected subsequently as Safety Requirements for the system. Analysis reflects aspects of A-SMGCS Safety objectives, which should be taken into consideration. Santrauka Darbe apžvelgiami progresyvūs saugos tikslų analizės metodai pagal Vilniaus aerodromo automatizuotos antžeminio eismo stebėjimo ir kontrolės sistemos veiklos pavyzdį. Analizuojama, kaip šios sistemos sutrikimai gali paveikti skrydžių saugą Vilniaus aerodrome. Remiantis galimų pavojų skrydžių saugai analize, tyrime nustatyti saugos tikslai, pagal kuriuos vėliau bus numatomos riziką mažinančios priemonės (galimų pavojų neutralizavimui ar kylančios rizikos sumažinimui iki priimtino lygio). Straipsnyje pateikiami veiksniai, kuriuos reikėtų įvertinti nustatant aerodromo automatizuotos antžeminio eismo stebėjimo ir kontrolės sistemos saugos tikslus.

A data acquisition and control system for high-speed gamma-ray tomography

2008 ◽  
Vol 19 (9) ◽  
pp. 094012 ◽  
Author(s):  
B T Hjertaker ◽  
R Maad ◽  
E Schuster ◽  
O A Almås ◽  
G A Johansen
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
High Speed ◽  
Gamma Ray ◽  
And Control

Next Generation of Real Time Data Acquisition, Calibration and Control System for the RatCAP Scanner

2007 ◽  
Author(s):  
Sachin S Junnarkar ◽  
Jack Fried ◽  
Sudeepti Southekal ◽  
Jean-Francois Pratte ◽  
Paul O'Connor ◽  
...  
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
Real Time ◽  
Next Generation ◽  
Time Data ◽  
Real Time Data ◽  
And Control

Sectional Data Acquisition and Control System for Solar Street Lamps Based on Internet of Things

2013 ◽  
Vol 773 ◽  
pp. 148-153 ◽  
Author(s):  
Juan Zhou ◽  
Bing Yan Chen ◽  
Meng Ni Zhang ◽  
Ying Ying Tang
Keyword(s):  
Control System ◽  
Internet Of Things ◽  
Data Acquisition ◽  
Real Time ◽  
Network Flow ◽  
Short Interval ◽  
Management Problem ◽  
Time Data ◽  
Control Centre ◽  
And Control

Aiming at the management problem of real-time data created while intelligent solar street lamps working, sectional data acquisition and control system based on internet of things is introduced in the paper. Communication protocol with unified form and flexible function is designed in the system, and communication address is composed of sectional address and subsection address. Three-level data structure is built in the polling algorithm to trace real-time state of lamps and to detect malfunction in time, which is suitable for sectional lamps management characteristics. The system reflects necessary statistic data and exception information to remote control centre through GPRS to short interval expend on transmission and procession and save network flow and system energy. The result shows the system brings improved management affection and accords with the idea of energy-saving and environmental protection.

Data acquisition and control system for molecule and atom‐resolved tunneling spectroscopy

1993 ◽  
Vol 64 (5) ◽  
pp. 1239-1243 ◽  
Author(s):  
E. I. Altman ◽  
D. P. DiLella ◽  
J. Ibe ◽  
K. Lee ◽  
R. J. Colton
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
Tunneling Spectroscopy ◽  
And Control

scholarly journals Thermal energy data monitoring system based on data collection of thermal metering equipment of internet of things

2021 ◽  
Vol 25 (4 Part B) ◽  
pp. 3073-3081
Author(s):  
Fen Peng
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
Thermal Energy ◽  
Data Aggregation ◽  
Monitoring And Control ◽  
Wireless Data ◽  
Monitoring And Control System ◽  
And Control ◽  
Connection Design ◽  
Energy Network

To solve the inaccurate measurement of the traditional thermal energy network, the paper designs a thermal energy network monitoring and control system based on GPS and Ti3367 wireless transmission and reception based on the IoT. First, the paper designs the monitoring and control system?s overall function and topology, including the management layer?s complex functions, the data aggregation layer, and the data acquisition layer. The paper then designs the system?s hardware structure based on the IoT, including the connection design of the hardware circuit structure diagram of the data aggregation layer and the data acquisition layer. Finally, the paper realizes the system?s software flow design, including system initialization and wireless data receiving and sending flow design.

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