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ECG Simulation for LabVIEW Users

The document provides instructions for designing a virtual ECG signal using LabVIEW software. It begins with an overview of the components of a normal ECG waveform - the P wave, QRS complex, and T wave. It then outlines the steps to construct the virtual ECG signal in LabVIEW, which includes using a simulate arbitrary signal block, collector block, and wave form graph block. The x and y data points are entered into the simulate arbitrary signal property table to generate the ECG graph. Creating virtual ECG signals allows for simulated representation of heart activity in a controlled digital environment.

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75 views6 pages

ECG Simulation for LabVIEW Users

The document provides instructions for designing a virtual ECG signal using LabVIEW software. It begins with an overview of the components of a normal ECG waveform - the P wave, QRS complex, and T wave. It then outlines the steps to construct the virtual ECG signal in LabVIEW, which includes using a simulate arbitrary signal block, collector block, and wave form graph block. The x and y data points are entered into the simulate arbitrary signal property table to generate the ECG graph. Creating virtual ECG signals allows for simulated representation of heart activity in a controlled digital environment.

Uploaded by

saadshahab622
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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LAB: 04

OBJECT:
Follow instructions to design a virtual arbitrary ECG signals (PQRST complex) using
labview software.

THEORY:
ECG: The electrocardiogram (ECG) is a diagnostic tool used to record the electrical
activity of the heart over time. It provides valuable information about the heart's
rhythm, rate, and various electrical events. The ECG waveform consists of several
distinct waves and intervals, with the most prominent ones being the P wave, QRS
complex, and T wave. In LabVIEW, you can design and implement ECG waveform
analysis and visualization tools to analyze these components. Here's an overview of the
theory behind the PQRST waves in the ECG waveform:

P Wave:
The P wave is the first waveform in the ECG and
represents atrial depolarization, the electrical activity
associated with the contraction of the atria. It is a small,
smooth, and typically rounded waveform that occurs
before the QRS complex. The normal duration of the P
wave is usually less than 0.12 seconds (120
milliseconds). Abnormalities in the P wave may suggest
atrial arrhythmias or conduction disturbances.

QRS Complex:
The QRS complex is the most distinctive feature of the ECG waveform
and represents ventricular depolarization, the electrical activity
associated with the contraction of the ventricles. It is a sharp and
complex waveform that follows the P wave. The QRS complex usually
lasts less than 0.12 seconds (120 milliseconds). Abnormalities in the
QRS complex can indicate ventricular arrhythmias or conduction
abnormalities.
T Wave:
The T wave follows the QRS complex and represents ventricular repolarization, the
electrical recovery of the ventricles. It is typically a rounded and slightly asymmetric
waveform. The normal duration of the T wave is usually less than 0.20 seconds (200
milliseconds). Changes in the T wave may indicate myocardial ischemia, electrolyte
imbalances, or other cardiac conditions.

ST Segment:
The ST segment is the interval between the end of the QRS complex and the beginning
of the T wave. It represents the time when the ventricles are depolarized and waiting for
repolarization. Changes in the ST segment can be indicative of myocardial infarction
(heart attack) or other ischemic conditions.

Complete ECG graph is here:


STEPS OF CONSTRUCTION:
 SIMULATER ARBITRARY SIGNAL:

Left click express input SIM ARB SIG.

 COLLECTOR BLOCK:
Search  type collector  drag & drop.
 WAVE FORM GRAPH:
Left click (front pannel)  graph  wave form graph.

 After creating block diagram


 Double tap on simulate arbitrary signal to open the property table then go to the
‘define signal’, now plot values to create the ECG graph.

 ‘x’ & ’y’ data points are here:


BLOCK DIAGRAM:
OUTPUT/RESULTS:

CONCLUSION:
In conclusion, by instructions and using LabVIEW software, you can create virtual ECG
signals (PQRST complex) easily. This allows for a simulated representation of heart
activity, which can be valuable for educational and testing purposes in a controlled
digital environment

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