real time vital sign monitoring using ni labview
DESCRIPTION
Real Time Vital Sign Monitoring Using NI Labview by Narinder Parshad Chowdary, Asst.Professor, Dept. of Biomedical E ngineering, Mehran UET, Sindh, Know More Here:http://transformhealth-it.org/ - PowerPoint PPT PresentationTRANSCRIPT
REAL TIME VITAL SIGN MONITORING USING NI LABVIEW
Engr. Narinder Parshad ChowdhryM.Sc. (e-Health & Telemedicine Systems) London, UK
Assistant Professor Dept. of Biomedical EngineeringMehran UET, Jamshoro, Sindh
4th International Conference on Transforming Healthcare with IT 6-7th September Hyderabad India
OUTLINE
Project Overview
Aim & objectives
NI LabView & DAQ System
Design of VIs & user interface
Methodology
Results
Conclusion
Project Overview Project deals with data acquisition & signal processing of vital
signs using NI LabVIEW
Designed algorithms (Virtual Instruments VIs) of heart rate (HR), blood pressure (BP)& pulse oximetry (SpO2)
Firstly, BP is measured using pressure sensor, air cuff & constant air defalting valve
Secondly, our own designed sensor to measure the oxygen saturation, heart rate by using red LED, infrared LED & photodiode
Later, sensor is connected to NI DAQ & measurements are made
AIM & OBJECTIVES
To acquire vital signs (physiological parameters) using biosensors
To interface the obtained data with NI DAQ System which converts it into digital format.
To link the DAQ System with NI LabVIEW and design an algorithm to measure real time data in graphical interface.
Finally, to design & develop a graphical user interface in LabVIEW to display the outputs.
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
BLOOD PRESSURE
• Blood pressure (BP), sometimes it is called arterial blood pressure, is the pressure exerted by circulating blood upon the walls of blood vessels.
• During each heartbeat, blood pressure varies between a maximum (systolic) and a minimum (diastolic) pressure.
Measurement Techniques
• Invasive (Direct measurement)
• Noninvasive (Indirect measurement)
Auscultatory Method
Oscillometric Method
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
BLOOD PRESSURE
Auscultatory Method
• Need Stethoscope
• Analog Measurement
Oscillometric Method
• Electronic Pressure sensor
• Digital Measurement
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
BLOOD PRESSURE
Ranges of Blood Pressure in different Ages
Stage Approximate age Systolic, mmHg Diastolic, mmHg
Infants 1 to 12 months 75–100 50–70
Toddlers 1 to 4 years 80–110 50–80
Preschoolers 3 to 5 years 80–110 50–80
School age 6 to 13 years 85–120 50–80
Adolescents 13 to 18 years & > 95–140 60–90
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
PULSE OXIMETRY (SpO2)
Real time Vital Signs monitoring using NI LabVIEW
• Pulse Oximetry is a device used to measure the oxygen level in our blood.• Our lungs have efficiency to diffuse oxygen into our blood hemoglobin to make it
oxygenated hemoglobin (HbO2) and after the exchange of oxygen with Carbon-di-oxide occurs between tissue and blood then the blood becomes deoxygenated hemoglobin (Hb).
Measurement Technique
• Oxygenated hemoglobin Infrared LED 940nm wavelength
• Deoxygenated hemoglobin Red LED 660nm wavelength
Introduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
PULSE OXIMETRY (SpO2)
Real time Vital Signs monitoring using NI LabVIEW
Pulsatile & Non-pulsatile Absorption factors
𝐑=[𝐀𝐂𝟔𝟔𝟎 /𝐃𝐂𝟔𝟔𝟎][𝐀𝐂𝟗𝟒𝟎 /𝐃𝐂𝟗𝟒𝟎]
Oxygen level (SpO2)
Introduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
PULSE OXIMETRY (SpO2)
Real time Vital Signs monitoring using NI LabVIEW
Principle of sensor
Current devices
Introduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
HEART RATE
Real time Vital Signs monitoring using NI LabVIEW
Normal Ranges
• Newborn baby - 120 to 160• Baby aged from 1 to 12 months - 80 to 140• Baby/toddler aged from 1 to 2 years - 80 to 130• Toddler/young child aged 2 to 6 years - 75 to 120• Child aged 7 to 12 years - 75 to 110• Adult aged 18+ years - 60 to 100• Adult athlete - 40 to 60
Current devices
National H
ealth Service, U
K
Introduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
BLOOD PRESSURE MECHANISM
Real time Vital Signs monitoring using NI LabVIEW
Consist of:
• Air Bulb
• Pressure Control Valve
• Hollow Rubber Tube
• Pressure Cuff
• Pressure Sensor
Introduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
Real time Vital Signs monitoring using NI LabVIEW
BLOOD PRESSURE MECHANISM
Introduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
Real time Vital Signs monitoring using NI LabVIEW
SpO2 & HEART RATE MECHANISM
Consist of:
• Red Light Emitting Diode (Red LED)
• Infrared Light Emitting Diode (IR LED)
• Photodiode / Phototransistor
BPX43
Introduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
Real time Vital Signs monitoring using NI LabVIEW
SpO2 & HEART RATE MECHANISM
Finger Placement
IR LED
RED LED
Phototransistor
Introduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
NI LABVIEW
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
• National Instruments Corporation, or NI is an American Company which produces automated test equipment and virtual instrumentation software like LabVIEW.
• LabVIEW (short for Laboratory Virtual Instrumentation Engineering Workbench) is a system design platform and development environment for a visual programming language from National Instruments.
Block Diagram
Front panelVI
DAQ SYSTEM
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
• DAQ or Data acquisition System convert analog waveforms into digital values for processing with minimum noise/artifacts.
Sensors that convert physical parameters to electrical signals.
Analog-to-digital converters that convert electrical signals into digital values.
• Components
NI Compact DAQ: USB based
Input / Output modules
Touch Screen Display
ALGORITHM CONCEPT
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
STARTEnter the NAME
and AGE
Inflate the cuff up to 180mmHg
Wait until Cuff is deflated up to
30mmHg
Signal is acquired & send for computation
SYSTOLIC
DIASTOLIC
ST
OR
E1)
2)
3
)
N
ame
& A
ge
BP30
sec
ond
sRed LED ON
Photo detector detects the data
Red LED OFF
IR LED ON
Photo detector detects the data
IR LED OFF
Fu
rth
er C
omp
uta
tion
s
HE
AR
T R
AT
ES
pO
2 Lev
el
5 se
c5
sec
SpO
2 & H
R
Dis
pla
yed
& S
aved
in M
S E
xcel
Try
Aga
inY
ES
NO
FIN
ISH
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
USER INTERFACE
PURPOSE
• To get the Name and Age of the user or patient
• Prompt User for input
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
BLOOD PRESSURE• Pumping up to 180 mmHg
• Acquiring data until pressure drops up to 30 mmHg
• Further computations on acquired data
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
BLOOD PRESSUREWhole VI
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
SpO2 & HEART RATE
1. Turn ON Red Led
2. Acquire & Compute data
𝐑=[𝐀𝐂𝟔𝟔𝟎 /𝐃𝐂𝟔𝟔𝟎][𝐀𝐂𝟗𝟒𝟎 /𝐃𝐂𝟗𝟒𝟎]
𝐑=[𝐀𝐂𝟔𝟔𝟎 /𝐃𝐂𝟔𝟔𝟎][𝐀𝐂𝟗𝟒𝟎 /𝐃𝐂𝟗𝟒𝟎]
𝐑=[𝐀𝐂𝟔𝟔𝟎 /𝐃𝐂𝟔𝟔𝟎][𝐀𝐂𝟗𝟒𝟎 /𝐃𝐂𝟗𝟒𝟎]
3. Turn OFF Red LED & Turn ON IR LED
4. Acquire & Compute data
5. Turn OFF IR LED
HEART RATE
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
SpO2 & HEART RATEWhole VI
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
SAVING IN EXCEL1. Acquiring data from VI & Displaying it.
2. Saving Data in MS Excel
3. Option to Try Again
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
FRONT PANEL
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
EXPERIMENTS
Whole Appended signal of Blood Pressure
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
EXPERIMENTS
Result saved in MS Excel
Real time Vital Signs monitoring using NI LabVIEWIntroduction | Literature Review | Hardware |NI Software & DAQ System| Methodology | Results | Conclusion|
CONCLUSION• Low cost Real time vital sign monitoring and easy to share
and store
• Can be used in user friendly / home environment
• Can be used in rural/remote Areas
• No need for particular atmosphere
• User (patient) can check vital sign routinely or in case any
abnormality occurs
• User may contact with available expert doctor using
Telemedicine