A virtual instrumentation system for measurements on the tallest medieval bell tower in europe

2003 ◽  
Vol 52 (3) ◽  
pp. 693-702 ◽  
Author(s):  
G. Moschioni
Keyword(s):  
Virtual Instrumentation ◽  
Bell Tower

Virtual instrument designed for data acquisition

2020 ◽  
Vol 65 (1) ◽  
pp. 179-186
Author(s):  
Mihaela Dorica Stroia
Keyword(s):  
Software Development ◽  
Data Acquisition ◽  
Virtual Instrument ◽  
Virtual Instrumentation ◽  
Design And Implementation ◽  
Adequate Design

Current software development directions open up a world of possibilities, especially in the engineering field. Present paper is meant to highlight the advantages and in particular the ease of using virtual instrumentation facilities, with a proper and adequate design and implementation of desired instrument. In this idea we bring into discussion a design for virtual instrument which can be used for data acquisition that can be stored for further simulations according to the needs required by the process in discussion.

Admiration and Awe

2017 ◽  
Author(s):  
Antonio Urquízar-Herrera
Keyword(s):  
Early Modern ◽  
The Other ◽  
Cultural Hybridity ◽  
Early Modern Spain ◽  
Systematic Analysis ◽  
Historical Discourse ◽  
Ecclesiastical History ◽  
Bell Tower ◽  
Negotiation Of Identity ◽  
Historical Controversy

This book offers the first systematic analysis of the cultural and religious appropriation of Andalusian architecture by Spanish historians during the sixteenth and seventeenth centuries. Early Modern Spain was left with a significant Islamic heritage: Córdoba Mosque had been turned into a cathedral, in Seville the Aljama Mosque’s minaret was transformed into a Christian bell tower, and Granada Alhambra had become a Renaissance palace. To date this process of Christian appropriation has frequently been discussed as a phenomenon of hybridisation. However, during that period the construction of a Spanish national identity became a key focus of historical discourse. The aforementioned cultural hybridity encountered partial opposition from those seeking to establish cultural and religious homogeneity. The Iberian Peninsula’s Islamic past became a major concern and historical writing served as the site for a complex negotiation of identity. Historians and antiquarians used a range of strategies to re-appropriate the meaning of medieval Islamic heritage as befitted the new identity of Spain as a Catholic monarchy and empire. On one hand, the monuments’ Islamic origin was subjected to historical revisions and re-identified as Roman or Phoenician. On the other hand, religious forgeries were invented that staked claims for buildings and cities having been founded by Christians prior to the arrival of the Muslims in Spain. Islamic stones were used as core evidence in debates shaping the early development of archaeology, and they also became the centre of a historical controversy about the origin of Spain as a nation and its ecclesiastical history.

scholarly journals Two-stage segment linearization as part of the thermocouple measurement chain

2021 ◽  
Vol 54 (1-2) ◽  
pp. 141-151
Author(s):  
Dragan Živanović ◽  
Milan Simić
Keyword(s):  
Transfer Functions ◽  
Approximation Error ◽  
Linearization Method ◽  
Linear Segment ◽  
Virtual Instrumentation ◽  
Memory Consumption ◽  
Thermocouple Measurement ◽  
Two Stage ◽  
Approximation Errors ◽  
Input Range

An implementation of a two-stage piece-wise linearization method for reduction of the thermocouple approximation error is presented in the paper. First, the whole thermocouple measurement chain of a transducer is described, and possible error is analysed to define the required level of accuracy for linearization of the transfer characteristics. Evaluation of linearization functions and analysis of approximation errors are performed by the virtual instrumentation software package LabVIEW. The method is appropriate for thermocouples and other sensors where nonlinearity varies a lot over the range of input values. The basic principle of this method is to first transform the abscissa of the transfer function by a linear segment look-up table in such a way that significantly nonlinear parts of the input range are expanded before a standard piece-wise linearization. In this way, applying equal-segment linearization two times has a similar effect to non-equal-segment linearization. For a given examples of the thermocouple transfer functions, the suggested method provides significantly better reduction of the approximation error, than the standard segment linearization, with equal memory consumption for look-up tables. The simple software implementation of this two-stage linearization method allows it to be applied in low calculation power microcontroller measurement transducers, as a replacement of the standard piece-wise linear approximation method.

Virtual Instrumentation Based Analysis of Induction Motor

2014 ◽  
Vol 984-985 ◽  
pp. 970-976
Author(s):  
Memala W. Abitha ◽  
V. Rajini
Keyword(s):  
Induction Motor ◽  
Life Time ◽  
Open Circuit ◽  
Virtual Instrumentation ◽  
Repair Work ◽  
Three Phase ◽  
Stationary Reference Frame ◽  
Stator Fault ◽  
Motor Failure ◽  
Vector Approach

The three phase induction motor is a popularly used machine in many of the industries, which is well known for its robustness, reliability, cost effectiveness, efficient and safe operation. The unnoticed manufacturing failure, mistakes during repair work, exceeding life time may be some of the causes of the induction motor failure, which may lead to the unknown shut down time of the industry. The condition monitoring plays important role as it has the influence on the production of materials and profit. In our work, the induction motor is modelled using stationary reference frame and analysed for single phasing stator fault. The techniques used in detecting the single phasing (open circuit) failures are Park’s vector approach and Fast Fourier Transform (FFT). Park’s vector approach is used for detecting the faults occurring at various phases and FFT is used for detecting the faults of the induction motor working under no load and varying loading conditions.

Sign in / Sign up

Export Citation Format

Share Document