Title:
Portable Digital Blood Pressure
Monitor
Synopsis:
Blood pressure is one of the most commonly
measured physiological parameters for cardiovascular diagnosis. Current methods
to measure blood pressure include the use of a non-invasive cuff and the use of
an invasive arterial catheter. Auscultatory cuff measurements require training
to discern the various Korotkoff sounds while oscillometric cuff measurements
are cumbersome in an emergency, time crucial setting. The use of a catheter can
lead to infection/embolism. A portable blood pressure monitor
device can measure a user's blood pressures and heart rate through an
inflatable hand cuff. The device is consisted of three main parts: external
hardware (such as cuff, motor, valve, and LCD), analog circuit, and microcontroller.
The analog circuit converts the pressure value inside the cuff into readable
and usable analog waveforms. The MCU samples the waveforms and performs Analog
to Digital conversion so that further calculations can be made. In addition,
the MCU also controls the operation of the devices such as the button and LCD
display.
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