Simple Low-Power Portable ECG Monitor

Cardiovascular disease is considered "the first enemy of the world's public health".In order to get the first-hand information about the status of the heart,ECG (Electrocardiogram) inspection has become one of the most important means. The human body is a conductor, the electrical change of heart itself can reflected in body surface by the surrounding tissue and body fluids, so that all parts of the body in each cardiac cycle have undergone regular changes in electrical activity. The way of placing the measurement electrodes in the appropriate parts of the body surface, and recording the power curve of the heart, is the current conventional clinical ECG When the heart is damaged or necrosised from ischemic, The changes of cardiac electrical activity can be properly and timely reflected in the electrocardiogram by anomalies of every waveform, so that it can provid doctors reliable basis for diagnosing arrhythmia, acute ischemia, myocardial infarction and other cardiac.With the accelerated pace of modern life,and the development of living standards and health consciousness, people have realized that it is quit important to take care the heart at any time and to be treated in critical circumstances. If you who are from a ordinary family are taken care and treated in the hospital, you can't afford the cost. Therefore,it is the inevitable trend to make the ECG instrument volume small,get the price reasonable and simplize the operation. ECG is one of the important instruments for diagnosising the heart disease.Until now the market has a variety of ECG, but most of these ECG is not suitable for use at home.This article focuses on the circuits and principles of ECG amplifier and the method of ECG signal conversion processing by TI's MSP430 ultra-low power MCU module,, also it focuses on the methods to filter the ECG signal and handle other related algorithms. Eventually I completed a battery-powered available handheld ECG that can alert the unusual situation to people, can provide people to observe the current ECG record, and can monitor the ECG situation for simple diagnosis at anytime and anywhere.