Design of Low Cost Blood Pressure Monitor For Rural Population

In this modern area, oscillometric blood pressure monitor has been widely used in medical equipment, replacing the traditional manual sphygmomanometer, which using the detection of Korotkoff sound to measure blood pressure. The oscillometric blood pressure monitor has been applied being subject of many studies due to its simplicity of use and low price. Oscillometric method of measuring blood pressure is done through the record of cuff-pressure oscillation. The systolic blood pressure and diastolic blood pressure is determined through the value of maximum cuff-pressure oscillation (Amax), or also known as mean arterial pressure (MAP). This paper present the building of oscillometric blood pressure monitor with manual pumping mechanism. Firstly the signal is detected by pressure sensor MPX5050GP, and then filtered by OP amp LM324N. after that, the filtered and amplified signal will be sampled by the microcontroller PIC18F2321. The calculated blood pressure will dispayed in term of ‘pass’ and “fail’ through the lighting of LED.