FDR PresentationFDR Presentation

Personal Health Monitoring Personal Health Monitoring DeviceDevice

Bassam Noaman

Dina El-Eissa

Mentor: Prof Zhenyu Guo

Instructor: Prof J Silverman

4/12/00

OverviewOverview

Sensors ECG Blood PressureTemperature

Signal ConditioningFilters, Amplifiers,Logic

PIC Microcontroller program interface

Palm pilotPC

Overall Block DiagramOverall Block Diagram

SpecificationSpecification Power Supply: 9.0 VDC Battery

Operating time 2.8 hours(from Standard 9.0 VDC Duracell battery) Inputs

Body Temperature SensorDetect Temperature in degree CelsiusRange between 25 C – 50.5 C

Blood Pressure Range between 0 – 5 Psi(259mmHg)Accuracy 0.125 @ 25 CManual cuff inflationMaximum systolic pressure 250 mmHg

ECGBandwidth 0.3Hz – 150 HzDetect Heart Rate in bpmOne lead ECG

SpecificationSpecification

• Monitor Performance Specification Palm Pilot screen record and plays the patient’s data file

on the screen PC screen displays the patient data file

Recorded body temperature Systolic and diastolic blood pressure ECG waveform Heart rate Email this data file

Interfaces Cables to interface the human body to the device Serial interface from the device to the Palm Serial interface from the palm to PC

SpecificationSpecification• Indicators

LED power statusLED blood pressure visual detector

Memory Storage1 MB of Palm is allocated for health monitoring 55.6 minutes of display range

Block DiagramBlock Diagram Bassam

Knob

Dina

Bassam

Hi Pass Filter

Instrumentation Amplifier

Notch Filter

Low Pass Filter

2.5 VDC offset

Amplifier

ECG Sensor Blood Pressure Sensor Capacitive

Microphone

Comparison Circuit

Current Temperature Sensor

Amplifier

Super Diode

PIC16C72 8-bit Microcontroller

8-bit multichunnel A/D Converter

Palm Pilot

Band Pass Amplifier

LED

PC

MMV

SAmplifier

Temperature signal conditioner simulationTemperature signal conditioner simulation

R4

1k

R6

1k

U2

LM741

3

2

74

6

1

5+

-

V+V-

OUT

OS1

OS2

V1-270mVdcV R1

10k

298.0uA0

D1

D1N4002

R5

100k

0V

R7

100k

0

0

0

I1298uAdc

R2

1k

0

V3-5Vdc

V2

5Vdc

0

2.980V

R3

1k

0

U1

LM741

3

2

74

6

1

5+

-

V+V-

OUT

OS1

OS2

Output voltage of the body Temperature sensorOutput voltage of the body Temperature sensor

Output voltage of the signal conditioner of the Output voltage of the signal conditioner of the body temperature sensorbody temperature sensor

Blood pressure measurementBlood pressure measurement

Blood pressure:

is defined as the intra-arterial pressure generated by

the pulsatic flow of blood through an artery. The blood pressure is indicated from two numbers.

Systolic:represents the pressure while the heart is beating.

maximum value for blood pressure

Diastolic: represents the pressure when the heart is resting between beats.

Flowchart for blood pressure measurementFlowchart for blood pressure measurement

Signal Conditioner of Capacitive Signal Conditioner of Capacitive MicrophoneMicrophone

+5

out1

+4

out2 LED OUTPUT

Microphone

JK FF

-2

R2

10k

R5

1k

+5

out4

K

+VCC

LED OUTPUT

-5

-VCC

OPA4137

R4

10k

-4

-1 +2C1

1n

C2

1n

+1

R3

1k

R6 1k

R1

1k

J

PUSH BUTTON

ECG Signal ConditionerECG Signal Conditioner

R7

1k

C2

1n

out2

R1

680

+4

C4

1u

R2

1k

AD620

LL

-4

C6.47u

-1

R9

1k

R10

40k

+2

+5

out4

out

RG 5k

+1

C1

1u 3.3M

1k

-2

RA

-5R82.7k

+5

R4

1k

+VCC

-VCC

LA

OPA4137

-5R3

1k

C5

1u

out1

R6 2.7k

+2.5

Simulation of the frequency Simulation of the frequency domain of ECGdomain of ECG

Microcontroller circuitMicrocontroller circuit

8

1 14

+5+5

3

32

C51u

C21u

24

+5

temp

11

C6

33n

6

+5

43

C7

33n

C4

1u

C1 1u

123

BP

1

40

10

PIC 16F874

13

ECG

MAX232

2

C3

1u

31

Software design block diagramSoftware design block diagram

Actual Physical LayoutActual Physical Layout

Physical layout of the program Physical layout of the program interfaceinterface

DemonstrationDemonstration

Measure current temperature and blood pressure and display it on the palm.

Display temperature,blood pressure and ECG wave in Hyper terminal, then take the data and save it in a file. Finally display it on java applet.

ConclusionConclusion

The Palm pilot is not only an organizer, but also a device to monitor data(Blood pressure, Temperature)

AcknowledgementAcknowledgement

Mr Yongning

Prof Zhenyu Guo

Mr Faisal Yasin

Mr Jose Hernandez

Mr Ken Drummond

Mr John Petrella

Mr Muhammad Afridi