Why the study?
Unhealthy lifestyles lead to chronic disease, particularly heart disease, prompting the use of wearable devices to monitor heartbeats and detect abnormalities early.
A simulated ECG circuit design for wearable devices demonstrates adequate signal amplification (43 dB) and low noise (170.86 microvolts) using space-saving pseudo-resistors.
Wearable ECG circuit designs may aid future monitoring tech; leaves open need for clinical accuracy validation.
Nowadays, many people have a sub-health lifestyle: poor diet, lack of exercise, high pressure, inadequate sleep, long periods of sitting, etc. All the unhealthy behaviours will lead to chronic disease, especially heart disease. People then use wearable devices like Apple Watch to monitor their heartbeat and try to find out if anything goes wrong in advance. This paper is then going to introduce how wearable devices detect the heartbeat from two perspectives. The hardware part gives a detailed implementation of a complete design of circuits within the wearable device used to detect heartbreak. The circuit is designed to be power-efficient, resistant to noise, and capable of amplifying the input voltage by about 100 times. The circuit design would contain three main parts: the human body circuit, the three-amplifier system, and the filter system. For each part, detailed information about how to choose the value of components is provided, and how the chosen value of components meets the requirement is also illustrated. On the other hand, it will introduce three algorithms used to analyze the ECG signals output from the circuit.
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Yixin Yang (2023) studied this question.
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