APPARATUS AND METHOD OF MONITORING BIOSIGNAL OF CYCLIST AND COMPUTER READABLE RECORDING MEDIUM

• US 20190104955A1
• Filed: 01/15/2018
• Published: 04/11/2019
• Est. Priority Date: 10/11/2017
• Status: Active Grant

• Current Assignee: Industry-Academic Cooperation Foundation, Chosun University (Chosun University)
• Original Assignee: Industry-Academic Cooperation Foundation, Chosun University (Chosun University)
• Inventors: KIM, Youn Tae, JUNG, Jae Hyo, SHIN, Si Ho
• Granted Patent: US 10,638,943 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 2503/10 Athletes
• CPC Class Codes: A61B 5/02455 provided with high/low alarm devices
• CPC Class Codes: A61B 5/349 Detecting specific parameters of the electrocardiograph cycle
• CPC Class Codes: A61B 5/366 Detecting abnormal QRS complex, e.g. widening
• CPC Class Codes: A61B 5/389 Electromyography [EMG]
• CPC Class Codes: A61B 5/4519 Muscles A61B5/389, A61B5/224 take precedence
• CPC Class Codes: A61B 5/6895 Sport equipment
• CPC Class Codes: A61B 5/7257 using Fourier transforms
• CPC Class Codes: B62J 45/416 Physiological sensors, e.g. heart rate sensors
• CPC Class Codes: B62J 45/422 on the handlebar

Abstract

An apparatus for monitoring a biosignal of a cyclist includes an electrocardiogram measuring sensor measuring an electrocardiogram signal of a cyclist, an electromyogram measuring sensor measuring an electromyogram signal of the cyclist, and a determination module determining muscle fatigue of the cyclist, based on at least one of a change in a heart rate of the measured electrocardiogram signal and a change in a frequency component of the measured electromyogram signal.

Claims

1. An apparatus for monitoring a biosignal of a cyclist, comprising:

an electrocardiogram measuring sensor measuring an electrocardiogram signal of a cyclist;

an electromyogram measuring sensor measuring an electromyogram signal of the cyclist; and

a determination module determining muscle fatigue of the cyclist, based on at least one of a change in a heart rate of the measured electrocardiogram signal and a change in a frequency component of the measured electromyogram signal.

2. The apparatus of claim 1, wherein the determination module comprises:

a fast fourier transform (FFT) conversion unit performing FFT conversion on the measured electromyogram signal;

an operation unit obtaining at least one of an intermediate frequency and an average frequency of the electromyogram signal having been FFT-transformed; and

a fatigue determination unit determining that fatigue has accumulated in a muscle when the obtained intermediate frequency is lower than a first threshold frequency, or the obtained average frequency is lower than a preset second threshold frequency.

3. The apparatus of claim 2, wherein the intermediate frequency of the electromyogram signal is a frequency at a point obtained by dividing an area of the electromyogram signal in half, and the average frequency of the electromyogram signal is a frequency at a point representing an average value of the electromyogram signal having been FFT-transformed.

4. The apparatus of claim 2, wherein the fatigue determination unit determines that fatigue has accumulated in the muscle, when a heart rate obtained, based on a QRS wave or a P wave of the measured electrocardiogram signal, is equal to or greater than a preset threshold value.

5. The apparatus of claim 2, further comprising a bandpass filter removing a frequency, other than a frequency of a frequency band of the heart rate of the measured electrocardiogram signal and a frequency of a frequency band of the measured electromyogram signal.

6. The apparatus of claim 1, wherein an electrode of the electrocardiogram measuring sensor is a dry electrode attached to a handlebar of a bicycle, and

an electrode of the electromyogram measuring sensor is attached to a thigh of the cyclist.

7. A method of monitoring a biosignal of a cyclist, comprising:

a first operation of measuring an electrocardiogram signal of a cyclist by an electrocardiogram measuring sensor;

a second operation of measuring an electromyogram signal of the cyclist by an electromyogram measuring sensor; and

a third operation of determining a degree of muscle fatigue of the cyclist, by a determination unit, based on at least one of a change in a heart rate of the measured electrocardiogram signal and a change in a frequency component of the measured electromyogram signal.

8. The method of claim 7, wherein the third operation comprises:

performing FFT conversion on the electromyogram signal;

obtaining at least one of an intermediate frequency and an average frequency of the electromyogram signal having been FFT-transformed; and

determining that muscle fatigue has accumulated when at least one of the obtained intermediate frequency and the obtained average frequency is lower than a preset threshold frequency.

9. The method of claim 8, wherein the intermediate frequency of the electromyogram signal is a frequency at a point obtained by dividing an area of the electromyogram signal having been FFT-transformed, in half, and the average frequency of the electromyogram signal is a frequency at a point representing an average value of the electromyogram signal having been FFT-transformed.

10. The method of claim 9, wherein the third operation comprises determining that fatigue has accumulated in a muscle when the heart rate obtained, based on a QRS wave or a P wave of the measured electrocardiogram signal, is equal to or greater than a preset threshold value.

11. The method of claim 8, further comprising removing a frequency, other than a frequency of a frequency band of the heart rate of the measured electrocardiogram signal and a frequency of a frequency band of the measured electromyogram signal.

12. The method of claim 7, wherein an electrode of the electrocardiogram measuring sensor is a dry electrode attached to a handlebar of a bicycle, and an electrode of the electromyogram measuring sensor is attached to a thigh of the cyclist.

13. A recording medium on which a program for execution of the method of claim 7 is recorded.