Design a simple model of electrocardiograph

2020

The present work is oriented to the development and design of a system that allows to simplify the learning of the fundamentals of electrocardiography. The proposed system uses NI LabVIEW software and the Biomedical Toolkit to design an interface with graphic and descriptive elements of a cardiac biopotential that generates normal heartbeats and / or abnormalities in the heartbeat. The result is an alternative tool in the teaching-learning process for medical, biomedical or bioengineering students.

1998

The goal of this work is to demonstrate the feasibility of using an inexpensive personal computer as the basis of a medical instrument which can be implemented and maintained in a developing country. Personal computers have become a commodity; they are inexpensive, available and are locally supported. A computer can be an instrument. This instrument can replace a traditional instrument; it can offer equal or better performance than the traditional dedicated instrument but have the advantages of a much larger user base of the personal computer hardware, software and support. I will develop and demonstrate a clinical electrocardiogram machine. I will use a PC, an Visual-Basic to develop a "Virtual Electrocardiogram Machine". This will present a waveform in real-time allowing the operator to judge the quality and placement of the electrodes in the same manner as in the traditional machine. Leads can be selected, sensitivity and chart-speed can be selected with "controls&...

MATEC Web of Conferences

Electrocardiograph (ECG) monitoring system is one of the diagnostic tools which can help in reduce the risk of heart attack. A cardiologist may be able to determine heart condition from the ECG signal that recorded from subject. The purpose was to design an ECG monitoring system which consists of ECG circuit and digital signal processing system to deny the unwanted signal. In general, the ECG signal is nature weak and only around 1mV amplitude. Therefore filter and amplifier circuits were designed into 3 stages with a total gain of 1000 to bring the signal to around 1V. Circuit designed included of instrumentation amplifier, bandpass filter and notch filter. The frequency bandwidth of ECG is between 0.05Hz until 100Hz. Schematic circuit was tested by software simulation before proceeding to hardware implementation. Simulation analysis was done by using Software Proteus 8 Professional while the further signal processing was done in MATLAB software environment. A PQRST ECG waveform ca...

Biomedical Engineering, 2000

Various models of electrocardiographic signal (ECS) simulators are used in current medical practice for testing the operation of electrocardiographs. The ECS simulators allow the metrological performance and measuring algorithms of various electrocardiographs to be tested. This is necessary for comparing the results of examination obtained using different electrocardiographs. The capability of an ECS simulator for testing metrological performance of modern digital electrocardiographs depends on the parameters of the simulator signals .

Journal of Electrocardiology, 2008

The details of digital recording and computer processing of a 12-lead electrocardiogram (ECG) remain a source of confusion for many health care professionals. A better understanding of the design and performance tradeoffs inherent in the electrocardiograph design might lead to better quality in ECG recording and better interpretation in ECG reading. This paper serves as a tutorial from an engineering point of view to those who are new to the field of ECG and to those clinicians who want to gain a better understanding of the engineering tradeoffs involved. The problem arises when the benefit of various electrocardiograph features is widely understood while the cost or the tradeoffs are not equally well understood. An electrocardiograph is divided into 2 main components, the patient module for ECG signal acquisition and the remainder for ECG processing which holds the main processor, fast printer, and display. The low-level ECG signal from the body is amplified and converted to a digital signal for further computer processing. The Electrocardiogram is processed for display by user selectable filters to reduce various artifacts. A high-pass filter is used to attenuate the very low frequency baseline sway or wander. A low-pass filter attenuates the high-frequency muscle artifact and a notch filter attenuates interference from alternating current power. Although the target artifact is reduced in each case, the ECG signal is also distorted slightly by the applied filter. The low-pass filter attenuates high-frequency components of the ECG such as sharp R waves and a high-pass filter can cause ST segment distortion for instance. Good skin preparation and electrode placement reduce artifacts to eliminate the need for common usage of these filters.

British Journal of Cardiac Nursing, 2015

Indonesian Journal of electronics, electromedical engineering, and medical informatics

Medical equipment functional test and calibration is a routine activity that must be carried on periodically. Electrocardiograph (ECG) requires an ECG phantom to calibrate the function. This calibrator is commonly called ECG signal simulator. The purpose of this study is to design a simple ECG signal simulator with ten leads of signals that can be used to test ECG recorders with standard recording procedures. With the ECG signal simulator that was designed and made, the development of signal patterns can be made as needed. The normal human cardiac signal displayed on the ECGSIM software. The potential value that displayed on ECGSIM software can be extracted manually and assembled as a flash program of microcontroller, so this microcontroller will generate some digital code by each parallel port. This digital code then converted as an analog signal by DAC. The electrocardiograph signal simulator output is an analog signal that identical with each lead according to the recording meth...

This paper deals with the study and analysis of ECG signal processing by means of MATLAB tool effectively. Study of ECG signal includes generation & simulation of ECG signal, acquisition of real time ECG data, ECG signal filtering & processing, feature extraction, comparison between different ECG signal analysis algorithms & techniques (i.e. Wavlet transform or so), detection of any abnormalities in ECG, calculating beat rate and so on using the most familiar and multipurpose MATLAB software along with LABVIEW. The proper utilization of MATLAB functions (both built-in and user defined), toolbox and Simulink can lead us to work with ECG signals for processing and analysis both in real time and by simulation with great accuracy and convenience.

2010

This statement examines the relation of the resting ECG to its technology. Its purpose is to foster understanding of how the modern ECG is derived and displayed and to establish standards that will improve the accuracy and usefulness of the ECG in practice. Derivation of representative waveforms and measurements based on global intervals are described. Special emphasis is placed on digital signal acquisition and computer-based signal processing, which provide automated measurements that lead to computer-generated diagnostic statements. Lead placement, recording methods, and waveform presentation are reviewed. Throughout the statement, recommendations for ECG standards are placed in context of the clinical implications of evolving ECG technology. (Circulation. 2007;115:1306-1324.)

11th International Conference on Information Science and Information Literacy, 2020

This article presents the design, development, and testing of a low-cost ECG simulator that can be used successfully in higher education institutions and other institutions dealing with medical equipment checking medical equipment. The practical realization of an EKG simulator combines both medical notions and notions of electronics, specific to the field of medical engineering. In this article, in the first part notions related to the anatomy of the cardiac system will be detailed, with the help of these notions you will better understand how an electrocardiograph (ECG) works, which reads the electrical impulses of the heart transformed into waveforms. The second part of the paper is the practical part of this project, the design of the electrical circuit, the simulation, and the practical realization (soldering the electronic components on a PCB and final assembly of all ECG components by integrating them into a specific housing). The last phase is dedicated to testing the device on a vital function monitor that belongs to a Cardiolife defibrillator. This simulator can perform 2 phases, a 60 bpm signal and a 120 bpm signal, having a button attached to the housing to change the signal, the difference of the signal is signaled by a green LED that is also on the surface plastic housing. The EKG simulator is mainly a signal generator, which mimics the signal generated by the human body.