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A more efficient newer algorithm of detecting systolic and diastolic pressure of human body along with a complete package
of an effective user-friendly embedded programmable blood pressure monitoring system has been proposed in this paper to
reduce the overall workload of medical personals as well as to monitor patient's condition more conveniently and accurately.
Available devices for measuring blood pressure have some problems and limitations in case of both analog and digital
devices. The sphygmomanometer, being analog device, is still being used widely because of its reliability and accuracy over
digital ones. But it requires a skilled person to measure the blood pressure and obviously not being automated as well as time
consuming. Our proposed system being a microcontroller based embedded system has the advantages of the available digital
blood pressure machines along with a much improved form and has higher accuracy at the same time. This system can also
be interfaced with computer through serial port/USB to publish the measured blood pressure data on the LAN or internet.
The device can be programmed to determine the patient's blood pressure after each certain interval of time in a graphical
form. To sense the pressure of human body, a pressure to voltage transducer is used along with a cuff in our system. During
the blood pressure measurement cycle, the output voltage of the transducer is taken by the built-in ADC of microcontroller
after an amplifier stage. The recorded data are then processed and analyzed using the effective software routine to determine
the blood pressure of the person under test. Our proposed system is thus expected to certainly enhance the existing blood
pressure monitoring system by providing accuracy, time efficiency, user-friendliness and at last but not the least the 'better
way of monitoring patient's blood pressure under critical care' all together at the same time.
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