A Circuit Design of a Sensor Amplifier for Improving Blood Pressure Measurement in Telehealth System

Hypertension is one of the leading causes of mortality worldwide, increasing the likelihood of developing heart, renal, brain, and other illnesses. Reliable blood pressure measurement is critical because even minor errors can have severe effects on individuals. In this study, we developed a telehealth system that integrates an instrumentation amplifier and band-pass filter circuit to resolve dissipation losses and monitor such conditions, thus improving accurate health parameter measurements. Our prototype was tested on 30 subjects of varying ages for ten cross-validated trials. Quantitative results show that our amplified system was able to outperform high-end digital commercially available instruments with a mean precision of 96.67% (mean arterial pressure), 96.79% (pulse rate), and 99.13% (temperature).