7/30/2019 LATEST BIOMEDICAL PROJECT TOPICS-Digital Pulmonary
Function Test - Spirometry
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BIOMEDICAL PROJECTS- Digital Pulmonary
Function Test Spirometry
ABSTRACT:-
Pulmonary function test is helpful in diagnosis lung diseases.
It
helps the doctor to detect the range of respiratory diseases.
This test can be
helpful to cure respiratory diseases if detected early. The
simplest test is
spirometry, which measures how fast the lungs can breath in and
out, and
also the volume of air lung can exhaled in the first and second
of test. A
peak flow meter can determine how much a patients airways
have
narrowed.
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Function Test - Spirometry
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Our aim is to make a microcontroller based spirometer which
displays
the output in form of signals.
Spirometry (meaning the measuring of breath) is the most common
of the
Pulmonary Function Tests (PFTs), measuring lung function,
specifically the
measurement of the amount (volume) and/or speed (flow) of air
that can be
7/30/2019 LATEST BIOMEDICAL PROJECT TOPICS-Digital Pulmonary
Function Test - Spirometry
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inhaled and exhaled. Spirometry is an important tool used for
generating
pneumotachograph to assessing conditions such as asthma,
pulmonary
fibrosis, and COPD.
The basic FVC test varies slightly depending on the equipment
used.
Generally, the patient is asked to take the deepest breath they
can, and then
exhale into the sensor as hard as possible, for as long as
possible. It is
sometimes directly followed by a rapid inhalation (inspiration),
in particular
when assessing possible upper airway obstruction. Sometimes, the
test will
be preceded by a period of quiet breathing in and out from the
sensor (tidalvolume), or the rapid breath in (forced inspiratory
part) will come before the
forced exhalation.
During the test, soft nose clips may be used to prevent air
escaping through
the nose. Filter mouthpieces may be used to prevent the spread
of
microorganisms, particularly for inspiratory maneuvers.
SENSOR:
We have used a Turbine Flow sensor to measure the Tidal Volume.
If
air is blown into the sensor, the fan inside the sensor rotates
and a
proximity sensor kept nearby will generate an series of pulse
signals,
which is then amplified and given as a pulse input to the
PIC
Microcontroller for Display.
For Eg: if the 7ml of gas goes to the rotor and rotor will give
1 pulse.so
we have taken 1pulse=7ml.and as per the count we make program
for
microcontroller to count pulses.
