Design of a Blood Pressure Measurement System Equipped with Voice Information and Measurement Memory

Abstract

Blood pressure is a vital indicator for assessing a person's cardiovascular health. Conventional digital blood pressure monitors still have limitations, particularly for lay users, the elderly, and people with visual impairments, as measurement results are only displayed numerically. This study presents the design of a digital blood pressure measurement system equipped with voice input and memory for storing measurement data. The system utilizes an MPX5050GP pressure sensor, an Arduino Mega 2560 microcontroller, an oscillometric method, a DF Player Mini audio module, and a graphical LCD display. Testing was conducted using the NIBP Simulator at five blood pressure levels: 80/50 mmHg, 100/65 mmHg, 120/80 mmHg, 150/100 mmHg, and 200/150 mmHg, with 30 repetitions. The research results show that the device is capable of measuring blood pressure with an accuracy of 92.63% systolic and 92.66% diastolic, displaying blood pressure classifications (hypotension, normal, and hypertension), providing voice information, and storing up to 100 measurement data. Thus, the designed system can improve user convenience, accessibility, and understanding in self-monitoring blood pressure.