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Objective To develope a realtime system for ECG signals acquisition,amplification and network transmission.Methods The raw noisy ECG signals underwent gain amplification,denoising and filtering by a system developed by virtual instrument and LabVIEW,and network component programming was carried out based on TCP/IP.Then the processed ECG signals were transmitted to remote terminals with dual communication model.Results The system behaved well in easy operation,high reliability and man-machine interface,and could be used to realize remote realtime transmission and browsing of ECG signals between the hospital and medical communities.Conclusion The system may be a choice for ECG signals remote acquisition and transmission,and provides references for the development of telemedicine software.
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Objective To design a virtual ECG monitor system based on LabVIEW software and ECG hardware.Methods The ECG sensor from Vernier company and NI ELVIS were used as the signal acquisition platform.The modules of signal acquisition and procession,characteristic parameters extraction and report output were designed with graphical programming language on LabVIEW platform.Results The virtual ECG monitor system could implement reading,procession,analysis,report output by the computer,and individual differences in ECG analysis could be eliminated.Conclusion The system have advantages in easy operation,low cost,multi purposes and etc,and thus it is valuable for the development of miniature andintelligent multiphysiological parameters detection systems.
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Objective: To design a heart rate testing procedure which based on Labview. Methods:Collect the blood oxygen signals of the fingers, which keep in step with the pulse wave. Filter the signals and obtain the pregnant datum by the Labview procedures. Results: Achieve the pulse cycle“T”by Labview processing the blood oxygen signals of the fingers, and gain the heart rate by calculating the pulse in one minute(Pulse is equal to the number of heart beat in one minutes-1/T,the heart rate). Conclusion:It is an important and meaningful work to process the signals. Not only acquire the heart rate, but also prompt and diagnose the diseases of the cardiovascular system. It also can provide some meaningful diagnostic evidence.
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Objective: To develop a novel fast auto blood viscosity analyzer based on the relation between flow rate and Casson viscosity of non-Newton fluid such as blood. Methods: Different from the tradition friction method of measuring blood viscosi-ty, the instrument was developed based on the Casson flow equation for blood in round tube and Stokes equation, using virtual instrument technique to calculate the Casson viscosity and stress, and pressure sensor and peristaltic pump to perform a setup. Results: Controlled by the data acquisition system, the blood Casson viscosity and stress were measured quickly and simply. Conclusions: Compared with the similar instruments used in clinic, this analyzer is faster in measurement and has high preci-sion, can determine the apparent viscosity and other Casson parameters of blood at any shear rate, and gives more clinic informa-tion for patients.
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Network labs built with virtual instruments promote the reform of the teaching concept. They also improve the network teaching and reduce the cost of teaching. The application of virtual instruments in the hygiene analytical chemistry network teaching is very necessary.
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Animalcule Identification and Drug Susceptivity System is designed with virtual instrument technology. The paper introduces main functions and the special feature of the software design. It discusses how to accomplish database operations and serial communication with LabVIEW and achieve remote distribution of data with DataSocket tchnology.
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A system of detection for ECG signal based on virtual instrument and LabVIEW is introduced.The conception of virtual instrument,ECG amplifier data acquisition(DAQ) and the data procession software are expounded.The system has the function of real-time displaying the ECG,data acquisition and Heart Rate Variability(HRV) analysis.
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The advantages of LabVIEW are becoming more and more distinct in instruments design.The ECG signals from MIT database are introduced using LabVIEW on software platform.They are treated with band stop,high pass,low pass filters in turn,and then heart rate is analyzed and calculated.Finally the amplitude and duration of QRS are recognized.
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This paper introduces an ECG real time monitoring system based on LabVIEW.With Wavelet transformation,the original ECG signals are processed to increase the accuracy of R peak detection.The feature of real time in this system is ensured by the application of simplified algorithm.The result panel offers various types of HRV information in time domain,including numerical and graphical displays which make the data more intuitional and more convenient to obtain.The system runs well in lab and the result is acceptable.
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A realtime system used for acquisition and analysis of ECG based on LabVIEW is presented in this paper.This realtime system can accomplish the functions such as the acquisition and display of ECG and the calculation of Instantaneous Heart Rate(IHR)and the Average Heart Rate(AHR).The system can be implemented easily.In addition,the user can modify and add functions of the system according to his needs conveniently.
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A new method of acquiring electromyographic is presented.An EMG signal acquisition system is developed based on virtual instrument,which adopts traditional electromyographic instrument,high performance data acquisition card and Labview software.The real-time acquisition,digitalization and display of electromyographic signal are realized through the new system.Adapted to various physiological signals with the expanded functions,the system can be considered as the future physiological instrument's direction.
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This paper introduces the ECG Real-time Signal System,which is developed by the LabVIEW language. The ECG data are readied from signal collecting system by COM port. After a series of process,the ECG waves display on the virtual waveform graph. As a part of Internet ECG Real-time Monitor project,it will be developed into a clinical applied virtual instrument,which has many functions such as storage,web transmission,ECG recognition,ect.
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On the basis of ARMT core processor, a biological signal acquisition system with USB2.0 interface is presented in this paper. It is self-developed and Lab VIEW7 is taken as a host communicating software platform for the entire data communication system. The study is mainly focused on the firmware programming for USB chip, the development of USB WDM Driver, and the method for the calling of DLL from Lab VIEW7 to communicate with self-made hardware device.
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LabVIEW is applied to the realization of virtual oscilloscope, and such functions are fulfilled as waveform display, parameter measurement, filter, spectral analysis, data storage and playback.
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The software design of a biological enzyme calibration system based on virtual instrument technology is introduced. The serial communication with LabVIEW and data tele -distribution with DataSocket technology are also described.
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This paper introduces a virtual ECG sampling system based on LabVIEW. The system, utilizing self-developed ECG sampling card, fulfils ECG measurement and A/D conversion safely and realizes ECG data processing and display under Labview developing environment.
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This paper introduces a virtual instrument based on VC++, which can be used to measure the working memory capacity of visual modality, auditory modality and mixed modalities, thus a convenient and cheap method for working capacity measurement in clinical and psychological applications is provided.
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Objective To develop an ECG telemonitoring system which can meet many needs of cardiopaths with enjoying medical care out of hospitals.Methods The signals of collection and pretreatment in ECG105 that were transmitted to the computer through serial port,the computer's powerful functions in analyzing and processing signal were utilized fully to design ECG telemonitoring system based on virtual instrument by LabVIEW.Results The system can redisplay and analyze the stored signal and judge whether the heart rate is abnormal,and implement ECG data remote transmission.Conclusion The display,storage,redisplay,diagnosis and tekecommunications of ECG can be achieved conveniently and provide convenience for many cardiopaths with its powerful functions and low cost.