A real-time extraction method of heart rate value based on cardiac shock signal
A technology of cardiac shock signal and extraction method, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems such as large heart rate value extraction errors.
Active Publication Date: 2017-09-29
SHANGHAI ENG RES CENT FOR BROADBAND TECH & APPL
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[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a real-time heart rate value extraction method based on the heart shock signal, which is used to solve the problem of multiple peak points or lack of peaks in one cycle of the heart shock signal in the prior art. Points lead to a large error in heart rate value extraction
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[0035] The present invention provides a method for real-time extraction of heart rate values based on heart shock signals, such as figure 2 As shown, the real-time extraction method of the heart rate value based on the heart shock signal comprises:
[0036] 1) Extract all the maximum point set U in the shock signal waveform segment.
[0037]2) Filter U, that is, filter U by amplitude (or amplitude), and filter out all points whose amplitude is less than half of the amplitude of adjacent points. It needs to be filtered multiple times until there is no point to remove.
[0038] 3) Use the cycle guessing method to sort the filtered maximum points two-dimensionally to obtain the heart rate cycle.
[0039] see image 3 , the specific process of this step includes:
[0040] S0, assuming that the number of maximum value points after amplitude screening in the BCG waveform segment is n, and n is a positive integer, arrange the maximum value points according to the abscissa from ...
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The present invention provides a heart rate value real-time extraction method based on the heart shock signal. The heart rate value real-time extraction method based on the heart shock signal includes: extracting a set of all maximum point points in the wave segment of the heart shock signal; Large value points are screened by amplitude; the cycle guessing method is used to sort the filtered maximum point set two-dimensionally; the cycle is obtained according to the sorting results, and the heart rate is obtained. The heart rate extraction method of the present invention is not affected by multiple peak points or lack of peak points in one cycle of the heart shock signal, and can be used to collect the slight change signal of the body of a subject who maintains a sitting or lying position. The probability calculation is converted into a two-dimensional array sorting with a small amount of calculation, and the heart rate value of the subject can be calculated in real time and reliably.
Description
technical field [0001] The invention belongs to the technical field of heart rate measurement, and relates to a heart rate extraction method, in particular to a real-time heart rate value extraction method based on heart shock signals. Background technique [0002] The heart rate measurement method commonly used in the early days is: using electrodes or sensors to directly contact the human body to create certain constraints on the human body, thereby causing a certain psychological burden on the subject. Later, there was no direct contact with the human body, and the method of measuring the heart rate without feeling was realized by measuring the weak vibration signal generated by the beating heart on the human body. This measurement method does not require electrodes and does not affect the normal life of the subjects. It provides the possibility for the subjects to monitor the work of the heart at home, and is also important for evaluating people's daily life conditions s...
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IPC IPC(8): G06F19/00
Inventor 陆美珠
Owner SHANGHAI ENG RES CENT FOR BROADBAND TECH & APPL