A heart rate calculation algorithm based on a heart sound autocorrelation function

A technology of autocorrelation function and calculation algorithm, applied in computing, computer parts, computer-aided medical procedures, etc., can solve the problems of false period value, high hardware cost, large amount of calculation of autocorrelation function, etc. volume reduction effect
CN109635786AActive Publication Date: 2019-04-16FOSHAN BAIBUTI MEDICAL TECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FOSHAN BAIBUTI MEDICAL TECH CO LTD
Publication Date
2019-04-16

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Abstract

The invention provides a heart rate calculation algorithm based on a heart sound autocorrelation function, which is characterized by comprising the following steps: obtaining a heart sound sequence, and carrying out filtering processing and envelope solving on the heart sound sequence; And calculating an autocorrelation function in the search range, searching a peak point of the autocorrelation function, and calculating a heart rate value according to the serial number of the peak point. The calculation algorithm can overcome interference of factors such as respiratory sound, friction sound, first heart sound waveform similarity and second heart sound waveform similarity, the heart rate value can be accurately calculated through the heart sound sequence, the calculation algorithm can be conveniently achieved in small wearable equipment and small electronic stethoscopes, and the calculation algorithm is also suitable for electronic auscultation auxiliary diagnosis and treatment systemsfor hospitals and families.
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Description

technical field

[0001] The invention relates to the field of medical equipment and medical signal processing, more specifically, to a heart rate calculation algorithm based on heart sound autocorrelation function. Background technique

[0002] Heart rate is one of the important indicators to reflect the health status of the body. Heart rate monitoring is of great significance for some patients with heart disease, such as medication and home care.

[0003] With the popularity of telemedicine, electronic stethoscopes will enter more community hospitals and families, and remote auscultation of heart sounds will increasingly become one of the important means of many telemedicine projects, including home care for heart patients. Compared with common methods such as measuring heart rate based on pulse, calculating heart rate using heart sound signals has higher accuracy, is convenient to use, and is low in cost. Therefore, calculating heart rate based on heart sounds is bound to ...

Claims

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