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Universal heart rate and electrocardiogram quick calculation system and method

A fast calculation, heart rate technology, applied in the direction of calculation, complex mathematical operations, electrical digital data processing, etc.

Active Publication Date: 2017-02-08
时瑞科技(深圳)有限公司
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Problems solved by technology

[0002] Biometric applications are widely used in current wearable electronic products, but heart rate and ECG algorithms must use a large number of floating-point operations, which has many limitations in current computing power consumption and MCU selection, and in electronic There are also many problems caused by the replacement of products. The present invention seeks a simple and fast way to calculate heart rate

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  • Universal heart rate and electrocardiogram quick calculation system and method
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  • Universal heart rate and electrocardiogram quick calculation system and method

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and embodiment, further elaborate the present invention.

[0030] A general fast calculation system and method for heart rate and electrocardiogram, characterized in that it comprises the following steps:

[0031] S101, after sampling the original data of the sensor, abstract the third-order waveform, and change the original data from the time axis to the frequency axis;

[0032] The original fast Fourier analysis uses a lot of floating-point calculations. The bandwidth of the heart rate is within a predictable range. The lower frequency range of 0.05Hz to 3Hz belongs to the low-frequency range. A large buffer must be used to calculate the FFT. For example, the sampling is 20Hz. If you want The FFT calculated to 0.05Hz must be calculated with a matrix of length 800. This affects power consumption and time.

[0033] like figure 1 Described is the traditional DFT algorithm, such as figure 2 The above is the traditional F...

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Abstract

The invention discloses a universal heart rate and electrocardiogram quick calculation system and method. The method comprises the following steps of performing three-order waveform abstraction after original data of a sensor is sampled, and changing the original data to a frequency axis from a time axis; performing section area accumulation on end point sampling data in the original data and delay sampling data spaced from the end point sampling data for a cycle, and then performing weighted summation on accumulated area values to obtain a basic frequency value; calculating a standard basic frequency value; regarding a signal with a relatively large difference with the standard basic frequency value as an invalid signal; reducing an error by adopting a minimum mean square error and dynamically changing a weighted value; and recovering a signal subjected to waveform abstraction, finding out a heart rate value and a waveform result, and outputting the heart rate value and the waveform result. According to the method, the purpose of simplifying calculation is achieved by mainly utilizing fast Fourier analysis of the waveform abstraction, wherein the waveform abstraction is defined by utilizing a table lookup method and finite elements; and fast Fourier calculation can be quickly performed.

Description

technical field [0001] The invention relates to the technical field of electrocardiogram and heart rate algorithm, in particular to a general fast calculation system and method for heart rate and electrocardiogram. Background technique [0002] Biometric applications are widely used in current wearable electronic products, but heart rate and ECG algorithms must use a large number of floating-point operations, which has many limitations in current computing power consumption and MCU selection, and in electronic The replacement of products also causes many problems. The present invention seeks a simple and quick way to calculate heart rate. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the present invention proposes a general-purpose fast calculation system and method for heart rate and electrocardiogram. The present invention mainly utilizes fast Fourier analysis of waveform abstraction to achieve the goal of simplified calculation, wherein...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/14
CPCG06F17/142
Inventor 黄剑敏周子勋
Owner 时瑞科技(深圳)有限公司
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