Wearable heart rate variability (HRV) monitoring device with active noise reduction function

Abstract

The invention discloses a wearable heart rate variability (HRV) monitoring device with an active noise reduction function. The HRV monitoring device comprises a PPG sensor circuit, a multi-axis acceleration sensors, a signal processing module and a display module. A PPG sensor is adopted to detect human pulse wave signals, interference signals, generated due to human motion, in the pulse wave signals are removed through an adaptive filtering noise reduction method according to human motion signals collected by the acceleration sensors, and HRV time domain and frequency domain analysis is carried out on the basis. Thus, the cardiovascular disease condition, mind, emotion, fatigue, sleep and the like of a user can be monitored at any time and any place, and assessment prompts can be given.

Description

technical field [0001] The invention belongs to the technical field of wearable devices, in particular to a wearable heart rate variability monitoring device for active noise reduction. Background technique [0002] With the rapid development of the economy, people are getting more and more satisfaction in material life, and have higher requirements for the quality of life. They are more concerned about their physical and mental health, and use wearable devices to monitor their health status in daily life. has become a trend. However, there are still very few wearable devices on the market, especially wearable devices with cardiovascular disease diagnostic functions, or there are still many limitations in use. Wearable healthcare devices. [0003] It is clinically found that changes in heart rate variability (HRV) are inseparable from many diseases such as cardiovascular diseases, or emotions, fatigue, etc. The time domain and frequency domain methods are used to analyze ...

AI Technical Summary

Problems solved by technology

The devices proposed in the above studies are bulky and inconvenient to wear, and cannot be used to monitor human heart rate variability anytime and anywhere, and none of them are designed to reduce human motion interference

In addition, Ma Junling et al. [5] Using the PPG sensor composed of red LED and phototransistor to measure human heart rate and respiratory rate, Jin Fan et al. [6] A portable pulse wave monitoring system is designed by using the PPG sensor of the same design combined with MSP430 single-chip microcomputer and Android mobile phone. These methods can reduce the volume of the device. The combination is susceptible to interference during the measurement process, and there is also no hardware design to reduce human motion interference

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