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Reflection-type heart rate monitoring method based on moving window integration

A moving window and reflective technology, which is applied in medical science, sensors, diagnostic recording/measurement, etc., can solve the problems of low accuracy, high energy consumption, and inability to display electrocardiograms, etc., to improve accuracy, ensure real-time performance and accuracy sexual effect

Inactive Publication Date: 2015-11-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The purpose of the present invention is to solve the problem that the existing light reflection method has low accuracy, high energy consumption, and is easily affected by external light, different skin colors, body hair, etc.; and the electrode measurement method cannot display a complete electrocardiogram, and cannot perform blood Oxygen detection, which cannot be detected during exercise, requires both hands to monitor the data, and a reflective heart rate monitoring method based on moving window integration is proposed

Method used

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  • Reflection-type heart rate monitoring method based on moving window integration
  • Reflection-type heart rate monitoring method based on moving window integration
  • Reflection-type heart rate monitoring method based on moving window integration

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specific Embodiment approach 1

[0023] Specific implementation mode one: combine figure 1 To illustrate this embodiment, a reflective heart rate monitoring method based on moving window integration is specifically carried out according to the following steps:

[0024] Step 1. The reflective photoelectric sensor outputs the analog voltage value, that is, reads 117 data every 100ms, so as to ensure the real-time and accuracy of the data;

[0025] Step 2. Calculate the average value of the stable values ​​of the 117 data read in 100ms according to step 1;

[0026] Step 3: Calculate the time interval between two heart rate fluctuations and the number of heart rate fluctuations according to steps 1 and 2.

specific Embodiment approach 2

[0027] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in said step two, according to step one, the average value of the window stability value within 100 ms is obtained; the specific process is:

[0028] Take the average value S of the 117 data read in the first 100ms 0 , namely S 0 =(A 1 +A 2 +A 3 +......+A 117 ) / 117, A 1 The first data among the 117 data read in the first 100ms, A 2 The second data among the 117 data read in the first 100ms, A 3 The third data among the 117 data read in the first 100ms, A 117 It is the 117th data among the 117 data read in the first 100ms, 1≤k≤n, k=1, 2....117, n is the read data, and the value range of n is: n=1 , 2....117;

[0029] with S 0 Perform moving window integration for the window reference value and the 117 data read this time, and obtain the stable value S of the 117 data read in the first 100ms 1 , the S 1 As a reference value for moving window integration, do moving w...

specific Embodiment approach 3

[0035] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in the step three, the time interval between two heart rate fluctuations and the number of heart rate fluctuations are solved according to step one and step two; the specific process is:

[0036] Assuming that the time of the mth data is m / 1170 seconds, how many data are detected between the two heart rate fluctuations, and multiplied by m / 1170 is the time interval between the two heart rate fluctuations;

[0037] The process of determining the number of heart rate fluctuations is as follows:

[0038] When the value of the heart rate signal drops and continues to rise beyond the reference value of the moving window integral of 100ms, it is judged as a heartbeat, flag is a count array, when the value of the heart rate signal drops beyond the reference value of the moving window integral, the first The two bits change from 0 to 1. When the value of the heart rate s...

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Abstract

The invention relates to a reflection-type heart rate monitoring method based on moving window integration, and aims at solving the problems that use of an existing light reflection mode in watches is low in degree of accuracy, high in energy consumption and prone to being affected by external light, different skin colors, body hairs and the like, an electrode measurement mode cannot display a complete electrocardiogram, blood oxygen detection cannot be conducted, detection cannot be conducted under the movement conditions, and data need to be monitored with both hands. According to the technical scheme, the method comprises the steps that a reflection-type photoelectric sensor outputs an analog voltage value, that is to say, 117 data are read per 100 ms; according to the first step, the average value of the stable value of the 117 data which are read per 100 ms is calculated; according to the first step and the second step, the time interval and the number of fluctuations of the heart rate between two-time heart rate fluctuations are solved. The reflection-type heart rate monitoring method based on the moving window integration is applied to the field of heart rate monitoring.

Description

technical field [0001] The invention relates to a reflective heart rate monitoring method based on moving window integration. Background technique [0002] With the innovation of science and technology, heart rate monitoring is no longer limited to traditional stethoscope measurement or electrocardiogram monitoring. The heart rate monitoring system based on electronic equipment has gradually entered people's field of vision with its advantages of high precision and high real-time performance. Heart rate data contains rich body index information, so the collection and processing of heart rate data has high medical value and application prospects. [0003] Due to the limitations of product characteristics such as small size and low power consumption of smart watches, there are two main heart rate detection methods that can be used on this product at present, one is to use the measurement of light reflection, and the other is to use the measurement of electric potential; [00...

Claims

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Application Information

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IPC IPC(8): A61B5/0245
Inventor 杜靖陈兴林刘宇维王岩王晗
Owner HARBIN INST OF TECH
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