Design and development of a digital blood pressure monitor

Abstract

This paper presents a design and development of a digital blood pressure monitor. The device was designed with the help of a microcontroller PIC 16F688A, a power supply unit, a blood pressure sensor, a signal conditioning unit and an LCD display. The constructed and tested device was found to perform satisfactorily. The developed blood pressure monitor and the Omron blood pressure monitor available in the market were used for blood pressure measurement on some persons and the results were compared. The percentage error in the reading of the newly developed equipment was approximately ±4 %. This indicates that the developed monitor can be use for blood pressure monitoring.

Key Words: Blood pressure, hypertension, systolic level, diastolic level. Microcontroller