On ECG parameter auto-analysis system based on virtual instrument

2008 ◽  
Author(s):  
Huang Jinwen ◽  
Wang Weilian
Keyword(s):  
Virtual Instrument ◽  
Analysis System ◽  
Ecg Parameter

The Research and Design of Virtual Spindle Vibration Test System

2014 ◽  
Vol 556-562 ◽  
pp. 2903-2905
Author(s):  
Fang Dong ◽  
Jian Cheng Yang ◽  
Tian Zhu Gao ◽  
Yu Xie ◽  
Lei Guo ◽  
...  
Keyword(s):  
Virtual Instrument ◽  
Vibration Signal ◽  
Scientific Basis ◽  
Test System ◽  
Vibration Testing ◽  
Labview Software ◽  
Data Acquisition Card ◽  
Spindle Vibration ◽  
Analysis System ◽  
New Generation

In order to facilitate dynamic analysis of spindle, improve the vibration characteristics of the spindle and achieve the goal of control of spindle motion stability. A spindle vibration testing system is developed with necessary sensor, signal conditioner and data acquisition card based on Labview software in this paper. The spindle vibration testing and analysis system is formed based on virtual instrument graphical programming language Labview. The hardware is reduced in testing process. At the same time, acquisition, processing and analysis for vibration signal are realized, and the costs of hardware are greatly reduced. The testing work is made more convenient and quick by this system, and test is made more intuitive by its real-time display function. It will provide a scientific basis for searching for measures to reduce the spindle vibration and developing a new generation of mechanical structure of the spindle.

scholarly journals MODELLING OF PARTIAL DISCHARGE ANALYSIS SYSTEM USING WAVELET TRANSFORM DENOISING TECHNIQUE IN LABVIEW ENVIRONMENT

2019 ◽  
Vol 81 (6) ◽  
Author(s):  
A. Nazifah Abdullah ◽  
S. H. K. Hamadi ◽  
M. Isa ◽  
B. Ismail ◽  
A. N. Nanyan ◽  
...  
Keyword(s):  
Wavelet Transform ◽  
Virtual Instrument ◽  
Signal To Noise Ratio ◽  
Partial Discharge ◽  
Discrete Wavelet ◽  
Mean Square ◽  
Mother Wavelet ◽  
Signal To Noise ◽  
Labview Software ◽  
Analysis System

Partial discharge (PD) measurement is an essential to detect and diagnose the existence of the PD. However, this measurement has faced noise disturbance in industrial environments. Thus, PD analysis system using discrete wavelet transform (DWT) denoising technique via Laboratory Virtual Instrument Engineering Workbench (LabVIEW) software is proposed to distinguish noise from the measured PD signal. In this work, the performance of denoising process is analyzed based on calculated mean square error (MSE) and signal to noise ratio (SNR). The result is manipulated based on Haar, Daubechies, Coiflets, Symlets and Biorthogonal type of mother wavelet with different decomposition levels. From the SNR results, all types of the mother wavelet are suitable to be used in denoising technique since the value of SNR is in large positive value. Therefore, further studies were conducted and found out that db14, coif3, sym5 and bior5.5 wavelets with least MSE value are considered good to be used in the denoising technique. However, bior5.5 wavelet is proposed as the most optimum mother wavelet due to consistency of producing minimum value of MSE and followed by db14.

Design of Temperature Acquisition and Analysis System Based on LABVIEW

2013 ◽  
Vol 816-817 ◽  
pp. 762-765
Author(s):  
Li Mei Wen ◽  
Min Ma
Keyword(s):  
Software Development ◽  
Real Time ◽  
Virtual Instrument ◽  
Environmental Temperature ◽  
Temperature Sensors ◽  
Development Platform ◽  
Labview Software ◽  
New Ideas ◽  
Instrument Technology ◽  
Analysis System

The introduction of the virtual instrument technology provides new ideas for the developments of the temperature acquisition. This paper presents the design of temperature acquisition system based on VI technology. This system takes LABVIEW as the software development platform, simulating environmental temperature parameters via temperature sensors and heaters. Through the USB-6009 data collecting cards environmental temperature is sent to LABVIEW software platform for analysis. The system has the functions of data acquisition, display, storage, callback, save, analysis, printing statements and limit alarm processing and so on, and completes the real-time collection and analysis of the temperature.

A Measurement and Analyze System for the KY231 Material Strain Tester Base on STM8S207 and Virtual Instrument

2013 ◽  
Vol 785-786 ◽  
pp. 1341-1347
Author(s):  
Tie Wang Liang ◽  
Yan Ren
Keyword(s):  
Experimental Data ◽  
Circuit Design ◽  
Measurement System ◽  
Virtual Instrument ◽  
Historical Data ◽  
Usb Interface ◽  
Measurement And Analysis ◽  
Analysis System ◽  
As Stress ◽  
Physical Quantities

A measurement and analysis system is designed base on the requirement of digital upgrade to the KY231 Material strain tester. This system is made up of two parts :The analyze system based on the LABWINDOWS and the measurement system based on STM8S207. The physical quantities (such as stress, pressure, deformation, etc.) of the metal specimen are acquired, displayed and analyzed digitally in this system, meanwhile the experimental data and curves can be stored in the systerm and compared to the historical data saved in the previous files. Because the USB interface is too complex to the MCU systerm form the aspart of the programming and circuit design, the PL2303 is used to simulate USB interface as virtual RS232 for the communication between the measurement system and the analyze system.

Development of the Measurement and Analysis System of Nanoparticles Size Distribution

2010 ◽  
Vol 121-122 ◽  
pp. 168-171 ◽  
Author(s):  
Zhen Mei Li ◽  
Wen Ge Li ◽  
Jin Shen ◽  
Wei Liu
Keyword(s):  
Light Scattering ◽  
Size Distribution ◽  
Virtual Instrument ◽  
High Speed ◽  
Photon Counting ◽  
Peak Position ◽  
Time Data ◽  
The Real ◽  
Measurement And Analysis ◽  
Analysis System

The measurement and analysis system of nanoparticles size distribution was developed by using virtual instrument technology, while the photon counting technology was applied in the system to replace the expensive correlator. High speed photon pulse counter was designed. The real-time data of nanoparticles dynamic light scattering were analyzed in the mixed program of MATLAB and LabVIEW, where the time autocorrelation functions of nanoparticles light scattering signals of monodisperse and polydisperse are reversed by NNLS arithmetic. Experiments results show that the peak position, peak width and symmetry of inverse distribution are very close to the real simulate particles.

The Measurement and Analysis System Development of 3D Roll Forming Machine Dynamic Characteristics Based on Virtual Instrument

2014 ◽  
Vol 889-890 ◽  
pp. 726-731
Author(s):  
Yuan Sheng Hu ◽  
Qiang Li ◽  
Yan Zhi Guan
Keyword(s):  
Dynamic Characteristics ◽  
Virtual Instrument ◽  
System Development ◽  
Three Dimensional ◽  
Field Measurements ◽  
Test System ◽  
Roll Forming ◽  
Development Platform ◽  
Measurement And Analysis ◽  
Analysis System

For the study dynamic characteristics of three-dimensional roll forming machine, this paper develops a dynamic characteristics measurement and analysis system of three-dimensional roll forming machine, which is based on the U.S. NI company software development platform, including the development of hardware and software part .The realization of dimensional roll forming machine dynamics parameters collection and analysis, the experiment proved that the test system can be easily field measurements demand dynamics parameters, to improve the three-dimensional roll forming machine precision and control accuracy to provide an experimental basis.

Design of Power Quality Analyzer Based on Labwindows/CVI

2012 ◽  
Vol 466-467 ◽  
pp. 759-762 ◽  
Author(s):  
Fan Yang ◽  
Hui Zhao
Keyword(s):  
Power Quality ◽  
Virtual Instrument ◽  
Electric Power System ◽  
Quality Analysis ◽  
Harmonic Amplitude ◽  
Quality Analyzer ◽  
Instrument Technology ◽  
Analysis System ◽  
Hardware Circuit ◽  
Design Ideas

The traditional quality analysis system has many disadvantages such as the bulky, expensive, fixed functional modules, poor extension, monotonous display etc. Combined with the virtual instrument technology, the paper propose design ideas of instrument Virtual power quality analysis based on LabWindows/CVI, including design of hardware circuit and software, obtain harmonic amplitude and phase by making use of fast Fourier transform. The analyzer has high accuracy, stable, and good anti-jamming performance, meet the electric power system testing requirements.

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