HEART RATE DETECTION MODULE, AND DETECTION AND DENOISING METHOD THEREOF
First Claim
1. A heart rate detection module comprising:
- a PPG measuring device configured to detect a skin surface in a detection period to output a PPG signal;
a motion sensor configured to output an acceleration signal corresponding to the detection period; and
a processing unit configured torespectively convert the PPG signal and the acceleration signal to first frequency domain information and second frequency domain information,determine a denoising parameter according to a maximum spectrum peak value of the second frequency domain information to denoise the first frequency domain information, andcalculate a heart rate according to a maximum spectrum peak value of the denoised first frequency domain information.
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Abstract
A heart rate detection module including a PPG measuring device, a motion sensor and a processing unit is provided. The PPG measuring device is configured to detect a skin surface in a detection period to output a PPG signal. The motion sensor is configured to output an acceleration signal corresponding to the detection period. The processing unit is configured to respectively convert the PPG signal and the acceleration signal to first frequency domain information and second frequency domain information, determine a denoising parameter according to a maximum spectrum peak value of the second frequency domain information to denoise the first frequency domain information, and calculate a heart rate according to a maximum spectrum peak value of the denoised first frequency domain information.
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Citations
20 Claims
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1. A heart rate detection module comprising:
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a PPG measuring device configured to detect a skin surface in a detection period to output a PPG signal; a motion sensor configured to output an acceleration signal corresponding to the detection period; and a processing unit configured to respectively convert the PPG signal and the acceleration signal to first frequency domain information and second frequency domain information, determine a denoising parameter according to a maximum spectrum peak value of the second frequency domain information to denoise the first frequency domain information, and calculate a heart rate according to a maximum spectrum peak value of the denoised first frequency domain information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A heart rate detection method adapted to a heart rate detection module, the heart rate detection module comprising a PPG measuring device, a motion sensor and a processing unit, the heart rate detection method comprising:
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detecting, by the PPG measuring device, a skin surface in a detection period to output a PPG signal; outputting, by the motion sensor, an acceleration signal corresponding to the detection period; receiving, by the processing unit, the PPG signal and the acceleration signal; respectively converting the PPG signal and the acceleration signal to first frequency domain information and second frequency domain information; determining a denoising parameter according to a maximum spectrum peak value of the second frequency domain information to denoise the first frequency domain information; and calculating a heart rate according to a maximum spectrum peak value of the denoised first frequency domain information. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A denoising method of a heart rate detection module comprising:
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receiving a PPG signal and an acceleration signal in a detection period; converting the PPG signal to a frequency domain PPG signal and generating first frequency domain information comprising a first frequency index set and a first spectrum value set associated therewith; converting the acceleration signal to a frequency domain acceleration signal and generating second frequency domain information comprising a second frequency index set and a second spectrum value set associated therewith; identifying three frequency indexes corresponding to top three spectrum peak values in the first frequency domain information and a reference index corresponding to a maximum spectrum peak value in the second frequency domain information; and denoising the first spectrum value set according to the three frequency indexes and the reference index. - View Dependent Claims (17, 18, 19, 20)
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Specification