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Digital signal processing method, system and equipment for heart rate measurement

A digital signal processing and digital signal technology, applied in the directions of diagnostic recording/measurement, medical science, sensors, etc., can solve the problems of insufficient function of heart rate monitoring equipment, discomfort and continuous measurement of heart rate, etc., to achieve strong anti-noise ability, easy to implement, The effect of high measurement accuracy

Inactive Publication Date: 2016-01-27
深圳市云宙多媒体技术有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to propose a digital signal processing method for heart rate measurement, which aims to solve the problem that the heart rate monitoring equipment in the prior art is not perfect enough, needs to be measured in a quiet state, and is not suitable for continuous heart rate measurement during exercise

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  • Digital signal processing method, system and equipment for heart rate measurement
  • Digital signal processing method, system and equipment for heart rate measurement

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Experimental program
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Embodiment 1

[0048] figure 1 It is a flow chart of a digital signal processing method for heart rate measurement in a preferred embodiment of the present invention, and the method includes the following steps:

[0049] S101. Obtain the digital signal A, and obtain the sampling frequency f of the digital signal A, the sampling duration t, and the signal sampling capacity n; figure 2 It is a partial waveform diagram of digital signal A, the abscissa indicates the sample number, and the ordinate indicates the signal amplitude.

[0050] S102. Take the first M samples of the digital signal A, and evaluate the sample variance;

[0051] Specifically:

[0052] Divide M samples into N groups and calculate the variance of each group Wherein i=1,2,...,N, N is a positive integer;

[0053] Estimate the sample variance: σ ^ = ( 1 + 0.001 · ( ...

Embodiment 2

[0078] Figure 6 It is a structural diagram of a digital signal processing system for heart rate measurement in a preferred embodiment of the present invention; the system includes:

[0079] The digital signal acquisition module is used to acquire the digital signal A, and obtain the sampling frequency f of the digital signal A, the sampling duration t, and the signal sampling capacity n;

[0080] The sample variance evaluation module is used to take the first M samples of the digital signal A and evaluate the sample variance;

[0081] Specifically: divide M samples into N groups, and calculate the variance of each group where i=1,2,...,N, where N is a positive integer; evaluate sample variance: σ ^ = ( 1 + 0.001 · ( σ i ...

Embodiment 3

[0113] A device including a digital signal processing system for heart rate measurement in Embodiment 2.

[0114] The digital signal processing system for heart rate measurement has been described in detail in Embodiment 2, and will not be repeated here.

[0115] The device can be mobile terminals of smart electronic devices such as mobile phones, ipads, tablets, smart watches, smart bracelets, and earphones.

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Abstract

Embodiments of the invention provide a digital signal processing method, a system and a piece of equipment for heart rate measurement. The method provided by the embodiment of the invention comprises the steps as follows: pre-processing data of a digital signal A, carrying out data filtering to form a point set T, grouping the point set T according to a distance d, extracting the maximum value of a point in the digital signal A corresponding to the position of the midpoint of each group, and recording the position of the point with the maximum value in each group in the digital signal A to form a new point set S; calculating the average distance d(S) of the point set S, and calculating the heart rate q according to the average distance d(S) of the point set S and the sampling frequency f; and outputting the heart rate q. According to the method of the invention, real-time processing can be carried out completely on a cheap single chip microcomputer, and calculation is carried out in a time-domain signal. The method is simple, easy to implement, and high in portability. The accuracy of measurement is high under low sampling rate. The method has extremely high anti-noise property, heartbeat rush missing-detection is avoided, the measurable environmental adaptability is high, and zero-probability heartbeat rush missing-detection can be realized even in changeable signal samples.

Description

technical field [0001] The invention relates to the technical field of digital signal processing, in particular to a digital signal processing method, system and equipment for heart rate measurement. Background technique [0002] Heart rate is an indicator that reflects heart function. Regular heart rate testing can predict heart disease so that it can be treated in time. Using heart rate monitoring during exercise can quickly and clearly reflect the information of the body during exercise, so as to keep the exercise intensity at an appropriate level and make the fitness effect better. With the development and advancement of technology, more and more monitoring devices are now equipped with heart rate sensors, including heart rate monitoring belts, smart watches, smart bracelets and even earphones. The diversification of heart rate monitoring equipment, in view of the complexity of traditional heart rate signal processing, makes the equipment monitoring function not perfect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0245
Inventor 秦文礼
Owner 深圳市云宙多媒体技术有限公司
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