CN111603155A - Adult heart rate detection method based on down-sampling - Google Patents
Adult heart rate detection method based on down-sampling Download PDFInfo
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- CN111603155A CN111603155A CN202010485028.4A CN202010485028A CN111603155A CN 111603155 A CN111603155 A CN 111603155A CN 202010485028 A CN202010485028 A CN 202010485028A CN 111603155 A CN111603155 A CN 111603155A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7253—Details of waveform analysis characterised by using transforms
- A61B5/7257—Details of waveform analysis characterised by using transforms using Fourier transforms
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Abstract
The invention provides a method for detecting adult heart rate based on down-sampling, which comprises the following steps: s01, collecting the electrocardiogram data for a period of time, and performing down-sampling on the collected data; s02, performing fast Fourier transform on the down-sampled electrocardio data; and S03, calculating the obtained frequency spectrum electrocardio data to obtain a heart rate value. The adult heart rate detection method based on downsampling has the advantages of low sampling rate, small data volume, simplicity and convenience.
Description
Technical Field
The invention relates to an adult heart rate detection method based on down-sampling.
Background
The heart rate is the number of beats per minute of a normal person in a resting state, and is an important index for representing the health degree of the heart. The conventional heart rate detection method is used for positioning based on R waves of time domain signals to detect, needs very high sampling frequency which is generally not lower than 1000Hz, and needs a series of preprocessing to filter out interference such as myoelectricity, power frequency, baseline drift and the like. Due to the fact that the sampling frequency is high, waste of storage resources is easily caused, and particularly, the portable monitoring device with a small storage space is difficult to adapt.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides an adult heart rate detection method based on down-sampling.
An adult heart rate detection method based on down-sampling comprises the following steps:
s01, collecting the electrocardiogram data for a period of time, and performing down-sampling on the collected data;
s02, performing fast Fourier transform on the down-sampled electrocardio data;
and S03, calculating the obtained frequency spectrum electrocardio data to obtain a heart rate value.
Based on the above, in step S01, the down-sampling process is performed on the acquired electrocardiographic data.
Based on the above, in step S02, the down-sampled electrocardiographic data is subjected to fast fourier transform.
Based on the above, in step S03, a frequency value corresponding to the first main peak within 0.5 to 5Hz in the transformed frequency spectrum is found, and then the frequency value is multiplied by 60 to obtain a heart rate value.
Compared with the prior art, the method has outstanding substantive characteristics and remarkable progress, and particularly, the adult heart rate value can be rapidly and accurately detected by performing down-sampling and frequency domain processing on the sampled electrocardiosignal data, so that the hardware storage space and the power consumption of the electrocardio-detection equipment are saved, and the method is simple and convenient to realize.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow diagram of the present invention.
FIG. 2 is a schematic diagram of the sampling of ECG data within five seconds.
Fig. 3 is a schematic diagram of the down-sampling of the central electrical data of fig. 2 in accordance with the present invention.
FIG. 4 is a schematic frequency spectrum of the down-sampled cardiac electrical data of FIG. 3 in accordance with the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, a method for detecting an adult heart rate based on downsampling includes the following steps: s01, collecting the electrocardiogram data for a period of time, and performing down-sampling on the collected data; s02, performing fast Fourier transform on the down-sampled electrocardio data; and S03, calculating the obtained frequency spectrum electrocardio data to obtain a heart rate value.
Specifically, in this embodiment, first, a sampling frequency of 1000Hz is used to collect adult electrocardiographic data for a period of time, and a waveform of an original electrocardiographic signal is shown in fig. 2, where a horizontal axis represents a sampling point number representing time information, and a vertical axis represents a corresponding electrocardiographic signal amplitude, and a unit is mV. The 5-second electrocardio data is taken for down-sampling processing, the sampling frequency of 1000Hz is reduced to 25Hz, the down-sampled adult electrocardio waveform is shown in figure 3, wherein the horizontal axis is the serial number of the down-sampled sampling point, and the vertical axis is the corresponding electrocardio signal amplitude, and the unit is mV. And then performing fast Fourier transform on the down-sampled adult electrocardiogram data. In the obtained frequency spectrum, as shown in fig. 4, the horizontal axis is the basic heart rate of the electrocardiographic signal in Hz, the vertical axis is the corresponding power value of the electrocardiographic signal in mV, the frequency value corresponding to the first main peak within 0.5-5Hz is found, and the frequency value is multiplied by 60 to obtain the heart rate value per minute.
The method can obtain an accurate adult heart rate value under the condition of effectively reducing the sampling rate, is simple and easy to implement, has low data storage capacity, and can be used for portable monitoring equipment with limited storage space.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. An adult heart rate detection method based on down-sampling is characterized by comprising the following steps:
s01, collecting the electrocardiogram data for a period of time, and performing down-sampling on the collected data;
s02, performing fast Fourier transform on the down-sampled electrocardio data;
and S03, calculating the obtained frequency spectrum electrocardio data to obtain a heart rate value.
2. The method of downsampling-based adult heart rate detection according to claim 1, wherein: in step S01, downsampling the acquired electrocardiographic data.
3. The method of downsampling-based adult heart rate detection according to claim 1, wherein: in step S02, the down-sampled electrocardiographic data is subjected to fast fourier transform.
4. The method of downsampling-based adult heart rate detection according to claim 1, wherein: in step S03, finding out the frequency value corresponding to the first main peak in 0.5-5Hz of the transformed frequency spectrum, and then multiplying the frequency value by 60 to obtain the heart rate value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010485028.4A CN111603155A (en) | 2020-06-01 | 2020-06-01 | Adult heart rate detection method based on down-sampling |
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| CN202010485028.4A CN111603155A (en) | 2020-06-01 | 2020-06-01 | Adult heart rate detection method based on down-sampling |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108992055A (en) * | 2018-07-05 | 2018-12-14 | 四川斐讯信息技术有限公司 | The method and device that photoelectric heart rate meter calculates precision is improved under a kind of low sampling rate |
| CN109222946A (en) * | 2018-08-28 | 2019-01-18 | 中国科学院电子学研究所 | Physio-parameter detection system and detection method based on optical fiber pad |
-
2020
- 2020-06-01 CN CN202010485028.4A patent/CN111603155A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108992055A (en) * | 2018-07-05 | 2018-12-14 | 四川斐讯信息技术有限公司 | The method and device that photoelectric heart rate meter calculates precision is improved under a kind of low sampling rate |
| CN109222946A (en) * | 2018-08-28 | 2019-01-18 | 中国科学院电子学研究所 | Physio-parameter detection system and detection method based on optical fiber pad |
Non-Patent Citations (2)
| Title |
|---|
| 王春武 等: "基于心冲击信号的心率提取算法", 《东北大学学报》 * |
| 贾学斌 等: "基于压电信号的两种心率呼吸率提取算法比较", 《信息技术与网络安全》 * |
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