ECG measuring device and method thereof

摘要

The present invention discloses at least two electrodes disposed at the body of the ECG measuring device of the present invention. When a user normally uses the ECG measuring device, the two electrodes are just adhered to the hands and the face of the user. The ECG measuring method of the present invention is to measure a first ECG signal from the left hand to the left side of face of the user and a second ECG signal from the right hand to the right side of face of the user. Then a plurality of ECG features are obtained from the first ECG signal, the second ECG signal and the result, as related coefficients, of the interactive computing, as a method of plus and subtract, of the first ECG signal and the second ECG signal. Hence, a biometric authorization process is engaged according to the plurality of ECG features.

主权项

1. An electrocardiogram (ECG) measuring device, which measures subsets of Lead-I ECG vector, comprising:
a first electrode, disposed at a lateral surface or a back surface of a body of the measuring device; a second electrode, disposed at a front surface of the body of the measuring device; and a microprocessor, electrically connected with the first electrode and the second electrode, the microprocessor capturing a first ECG signal when the first electrode and the second electrode touch the left hand and the left side of face of a user respectively, capturing a second ECG signal when the first electrode and the second electrode touch the right hand and the right side of face of the user respectively, and captures an entire ECG signal defined as a Lead-I ECG signal when the first electrode and the second electrode touch the left hand and right hand of the user respectively; wherein the microprocessor subtracts the first ECG signal and the second ECG signal from the entire ECG signal so as to obtain a third ECG signal, and engages the first ECG signal, the second ECG signal and the third ECG signal in a noise filtering process; wherein the microprocessor compares the first ECG signal, the second ECG signal and the third ECG signal with an ECG template, and determines whether the first ECG signal, the second ECG signal and the third ECG signal pass a prescreen process; wherein the microprocessor determines that the user does not pass a biometric authorization process if the first ECG signal, the second ECG signal and the third ECG signal do not pass the prescreen process, and the microprocessor extracts a first preset amount of ECG features from the first ECG signal, a second preset amount of ECG features from the second ECG signal, and a third preset amount of ECG features from the third ECG signal if the first ECG signal, the second ECG signal and the third ECG signal pass the prescreen process, and the user is engaged in the biometric authorization process according to the first preset amount, the second preset amount and the third preset amount of ECG features simultaneously.