Heart rate detection method, system and equipment based on PPG and storage medium

A detection method and heart rate technology, applied in the measurement of pulse rate/heart rate, diagnostic recording/measurement, medical science, etc., can solve the problems of low measurement accuracy, being easily affected by exercise, and not suitable for lie detection tests, etc., to achieve measurement High results and high precision effects

Inactive Publication Date: 2019-03-19
深圳市君利信达科技有限公司
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Problems solved by technology

However, so far, the design of most remote measurement systems is almost non-automated, and it is easily affected by movement during use, resulting in low measurement accuracy
[0003] In addition, when performing a polygraph test, it is necessary to perform the t

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  • Heart rate detection method, system and equipment based on PPG and storage medium
  • Heart rate detection method, system and equipment based on PPG and storage medium
  • Heart rate detection method, system and equipment based on PPG and storage medium

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Embodiment Construction

[0048] The present invention shoots RGB pictures through a local camera, adopts face detection to obtain the ROI of the face region of interest, uses PPG technology to average the green channel of the image region of interest, and extracts the heart beat information by interpolating the preset frame. Timing signal; the continuous wavelet transform is performed on the signal to obtain the blood volume pulse wave; then the heart rate value is calculated by Fourier transform; finally, the heart rate part is displayed in a continuous display mode to obtain a more stable heart rate.

[0049] PPG (photoplethysmography) is a low-cost optical measurement method. Its principle is: due to the different absorption characteristics of oxyhemoglobin and deoxygenated hemoglobin in the capillaries of the face, when the heart beats, the content of the two The change will lead to a change in the reflection intensity of the corresponding wavelength on the skin surface, that is, a change in the co...

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Abstract

The invention discloses a heart rate detection method, system and equipment based on PPG and a storage medium. The method comprises the steps that skin coarse detection is conducted on an input facialimage to obtain an interested skin area image; spatial pixel averaging is conducted on the green channel of the skin area image, and interpolation calculation is conducted on the facial image with apreset frame number to obtain a time sequence signal containing cardiac impulse information; filtering treatment is conducted on the time sequence signal using continuous wavelet transform to obtain impulse waves; a heart rate value is obtained by using Fourier transform to achieve the non-contacting type body heart rate measurement, the accuracy of the measuring result is high, and the method canbe applied to the fields of medicine, polygraph test and the like.

Description

technical field [0001] The invention relates to heart rate measurement technology, in particular to a PPG-based heart rate detection method, system, device and storage medium. Background technique [0002] At present, the cardiac pulse measurement technology based on the electrocardiogram (ECG) needs to be attached to the human body with a gel adhesive patch or a chest strap. On the one hand, these contacts may cause skin allergies or discomfort, and on the other hand, the use process is inconvenient. Remote measurements can provide a more comfortable electrode-free physiological assessment. However, until now, most of the remote measurement systems are almost non-automated in design, and are easily affected by movement during use, resulting in low measurement accuracy. [0003] In addition, when performing a polygraph test, it is necessary to perform the test according to the polygraph tester's facial expression, heart rate and other instructions, and it is best to test wi...

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Application Information

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IPC IPC(8): A61B5/024
CPCA61B5/02416A61B5/7235A61B5/7253
Inventor 焦小珍其他发明人请求不公开姓名
Owner 深圳市君利信达科技有限公司
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