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Heart rate estimation method and device

A technology of heart rate and oxygen uptake, applied in measuring pulse rate/heart rate, medical science, sensors, etc., can solve problems such as deviation

Active Publication Date: 2018-01-19
GUANGDONG COROS SPORTS TECH JOINT CO
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual exercise training process, with the increase of exercise time, cardiorespiratory endurance will gradually increase, and there will be a phenomenon of saving heart capacity, that is, at the same speed, the heart rate will gradually decrease; while the acceleration formed at the same speed during running The vector will basically not change, and the estimated exercise heart rate will also remain unchanged, which will deviate from the actual situation. It is difficult to accurately predict after the cardiorespiratory endurance of the exerciser improves

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  • Heart rate estimation method and device
  • Heart rate estimation method and device

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Experimental program
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Effect test

Embodiment 1

[0083] This embodiment provides a method for estimating heart rate, which is suitable for estimating heart rate when the signal quality of the heart rate sensor is unreliable. The method is executed by a smart wearable device, and the device is composed of software and hardware.

[0084] figure 1 It is a flow chart of the heart rate estimation method provided by Embodiment 1 of the present invention. Such as figure 1 As shown, the heart rate estimation method includes the following steps:

[0085] S11, filter out the heart rate and the corresponding speed when the sensor signal quality is reliable from the historical exercise data.

[0086] Screen the historical motion data, and for the speed and other data obtained by the nine-axis sensor, it is required that at a certain speed, the speed remains stable (for example, the fluctuation is less than 1km / h) for more than a certain period of time (for example, 3 minutes), and the signal quality of the heart rate sensor Heart rat...

Embodiment 2

[0119] This embodiment is improved on the basis of the above embodiments. After step S13, if exercise fatigue occurs, the end point heart rate is calculated according to the following method.

[0120] figure 2 It is a flow chart of an improved heart rate estimation method provided by Embodiment 2 of the present invention. Such as figure 2 As shown, if fatigue occurs according to the exercise time (exercise time reaches the preset value), then after step S13, the following steps are also included:

[0121] S161. Substitute the real-time speed into the relationship model to obtain a real-time exercise intensity percentage and running force value.

[0122] S162, if it is determined that the real-time exercise intensity percentage is greater than or equal to the preset intensity, and the duration exceeds the preset duration, then execute the following step S163; otherwise, perform processing according to step S14 of the first embodiment above.

[0123] S163. Substitute the sp...

Embodiment 3

[0132] This embodiment is improved on the basis of the above embodiments, and is used to improve the heart rate curve of the user during exercise.

[0133] image 3 It is a flow chart of another improved heart rate estimation method provided by Embodiment 3 of the present invention. Such as image 3 As shown, after calculating the stable terminal heart rate at the real-time speed, the following steps are also included:

[0134] S151. Use the heart rate obtained when the sensor signal quality is reliable as the starting heart rate, and record the corresponding time as the starting time.

[0135] The heart rate obtained when the signal quality of the sensor closest to the current moment is reliable is selected as the starting heart rate.

[0136] S152. According to the heart rate at the start point and the heart rate at the end point, select an applicable linear relationship model among multiple preset linear relationship models between time and heart rate.

[0137] When the...

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Abstract

The invention discloses a heart rate estimation method and device. The heart rate estimation method comprises the following steps: screening heart rate and corresponding speed from historical motion data when sensor signals are reliable in quality; calculating the actual oxygen uptake amount according to speed, heart rate, personal parameters and a running quotient model; establishing a relation model of speed, heart rate and actual oxygen uptake amount; and calculating stable end-point heart rate at the real-time speed according to real-time speed and the relation model. Through relations ofhistorical motion data, a mathematic model is established so that speed, heart rate, personal parameters and the actual oxygen uptake amount are correlated. The real-time speed can be plugged into themathematic model to estimate heart rate of a user. The heart rate estimation method and device can be used in a scenario where signals of a heart rate sensor are not reliable or the heart rate sensorcannot obtain accurate heart rate and other scenarios.

Description

technical field [0001] The invention relates to the field of motion data analysis, in particular to a heart rate estimation method and device. Background technique [0002] With the development and changes of people's working style and lifestyle, a series of epidemic chronic diseases such as high blood pressure, coronary heart disease, diabetes and obesity caused by sedentary, lack of exercise and high-calorie diet are increasing day by day. Wearable devices that monitor heart rate mainly use photoelectric sensors to measure heart rate to measure exercise intensity. However, in the process of converting the signal of the photoelectric sensor into heart rate data, the reliability of the data mainly depends on the quality of the signal. Once the signal quality is poor, the heart rate may be wrong, and the reliability needs to be verified. The only certification standard for heart rate measurement is the ECG signal generated by a heart rate chest strap, but the discomfort caus...

Claims

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Application Information

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IPC IPC(8): A61B5/024A61B5/11
CPCA61B5/024A61B5/11
Inventor 戎海峰韩娟王晓虎李能才
Owner GUANGDONG COROS SPORTS TECH JOINT CO
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