Key result
A non-invasive wearable device using a wrist PVDF piezo film sensor and intelligent terminal achieved high accuracy heart rate calculation by detecting radial artery vibration signals.
Why the study?
Most studies use electrode potential in ECG or reflected LED light in PPG to measure heart rate, prompting the development of a device using radial artery vibration signals.
A novel wearable device using a PVDF piezo film sensor to detect radial artery vibrations offers a low-power, high-accuracy alternative for continuous heart rate monitoring in healthcare IoT.
Hypothesis-generating for PVDF-based wearables; clinical validation required before adoption.
In recent years, many studies have focus on health care. We designed a non-invasive wearable device that not only equipped with BLE to detect vital signals but also combining an intelligent terminal to develop healthcare IoT. In most studies, an electrode potential is used in ECG, while for PPG, heart rates are measured by the amount of reflected LED light. However, in this paper, we detect heart vibration signals based on radial artery vibration signals by the wrist PVDF piezo film sensor that the user wears to detect his/her heart rate. The device can also reduce power consumption. In order to promote Signal to Noise Ratio (SNR), we adopt filter circuit design and peak detection algorithm to eliminate noise by using the intelligent terminal, then we are able to achieve high accuracy heart rate calculation. Furthermore, the intelligent terminal will upload the data to the cloud, so not only the user can monitor self-vital information anytime but also medical institutions can access the data in case of an emergency.
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Ni et al. (2019) studied Heart rate monitoring. Non-invasive wearable device with PVDF piezo film sensor and intelligent terminal was evaluated on Heart rate calculation accuracy. A non-invasive wearable device using a wrist PVDF piezo film sensor and intelligent terminal achieved high accuracy heart rate calculation by detecting radial artery vibration signals.
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