Heart rate calculating method and system based on wavelet analysis
A calculation method and wavelet analysis technology, applied in the field of information processing, can solve problems such as untrue heart rate results, and achieve high accuracy, guaranteed reliability, and good stability
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Embodiment 1
[0042] Such as figure 1 As shown, a heart rate calculation method based on wavelet analysis is given in this embodiment. Wavelet analysis is a kind of Fourier analysis. Fourier analysis is to express a function by translation and expansion of cosine function, while wavelet analysis is to express by translation and expansion of parent function.
[0043] refer to figure 1 The flowchart of the flow chart, this heart rate calculation method specifically includes the following steps: signal data collection 100, respectively collecting acceleration signals and photoelectric signals per unit time; analyzing acceleration signals 211, this time including the statistical characteristic value and peak characteristic value of the acceleration signal. Analysis and calculation, in order to classify the motion state of the user as static, partial motion and overall motion, and obtain the first motion state 212; at the same time, it is also necessary to process the photoelectric signal. Base...
Embodiment 2
[0057] Such as figure 2 As shown, since only the acceleration signal is used to distinguish the local motion from the global motion, some local motions will be classified into the global motion. In order to reduce the misjudgment of the exercise state, in this implementation, the first heart rate value of the partial exercise state that is misjudged as the overall exercise in the heart rate calculation method is corrected. refer to figure 2 Schematic flow chart of the correction of the first heart rate value of the local motion state that is misjudged as the overall motion. The specific correction method is: if the first motion state obtained in the motion state classification is the overall motion state 21, perform denoising The first heart rate value obtained after the processing and wavelet reconstruction steps is less than the set heart rate threshold 22, and the heart rate threshold in this embodiment is a threshold set in advance, usually an empirical value. In this ...
Embodiment 3
[0059] Based on the heart rate calculation method based on motion state classification, wavelet decomposition and wavelet reconstruction, this embodiment provides a heart rate calculation system based on wavelet analysis, which specifically includes a signal acquisition module, an acceleration signal analysis module, a photoelectric signal wavelet decomposition module, and a denoising module and wavelet reconstruction processing module. Wherein, the signal acquisition module collects the acceleration signal and the photoelectric signal per unit time respectively through the acceleration sensor and the photoelectric sensor. In the acceleration signal analysis module, the collected acceleration signals are statistically analyzed to obtain the statistical characteristic values of the mean and variance; the peaks of the acceleration signals are positioned and the characteristic values of the peaks are calculated, including the number of peaks, the height of each peak, and the p...
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