SoC-based wearable heart rate variability monitoring device

Abstract

The invention discloses a SoC-based wearable heart rate variability monitoring device. The device is composed of a PPG sensor, a PPG sensor signal conditioning circuit, an LED light source control circuit, an SoC chip and a wireless communication module, wherein the PPG sensor is used for acquiring human pulse wave signals, the PPG sensor signal conditioning circuit is used for conditioning signals output by the PPG senor, the LED light source control circuit is used for controlling an LED light source in the PPG sensor, and the SoC chip is used for outputting control signals to the LED light source control circuit, processing the human pulse wave signals and obtaining a heart rate variability monitoring result through calculation, or only used for converting the human pulse wave signals into digital signals; the wireless communication module is used for sending the heart rate variability monitoring result obtained by the SoC chip to an intelligent terminal, or sending the human pulse wave signals obtained by the SoC chip to the intelligent terminal for heart rate variability analysis. The device has the advantages of being low in power consumption, small in size, low in cost, high in mass production yield and the like.

Description

technical field [0001] The invention belongs to wearable devices, in particular to a SoC-based wearable heart rate variability monitoring device. Background technique [0002] Due to the interaction of sympathetic and parasympathetic nerves in the human heart, the instantaneous heart rate between continuous heartbeats will produce small fluctuations. This phenomenon is called heart rate variability (HRV). Studies have shown that there is a close relationship between changes in HRV and cardiovascular diseases, which can be used for early warning of cardiovascular diseases or assisting rehabilitation of patients with cardiovascular diseases. At the same time, HRV analysis can also be used in the detection of spirit, fatigue state, sleep quality, etc. or in biometrics and other fields. [0003] At present, the ECG method is mainly used to obtain the ECG and then analyze and calculate the heart rate variability results. Related measuring devices or systems have been reported, s...

AI Technical Summary

Problems solved by technology

In addition, Ma Junling et al. [3] Using the PPG sensor composed of red LED and phototransistor to measure human heart rate and respiratory rate, Jin Fan et al. [4] A portable pulse wave monitoring system was designed using the PPG sensor of the same design combined with MSP430 single-chip microcomputer and Android mobile phone, but heart rate variability was not monitored

In summary, the existing PPG sensor-based heart rate variability analysis system still has problems such as large size, and the design of the LED light source in the PPG sensor is difficult to apply to various environments. At the same time, there is still a lot of room for improvement in performance, such as reducing Power consumption, saving cost, improving mass production yield, etc.

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