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1. Advanced Health Monitoring System Using 3 Lead
Portable ECG Device
Name :Tanvir Rahman
ID:15202001

2. Content
• Introduction
• Objectives
• Apparatus
• Block Diagram
• Flow Chart
• Working Principle
• Future Work
• Conclusion

3. Introduction
• What is ECG?
• Why we need ECG?
• Personal Monitoring System in ECG
• Inexpensive user friendly ECG device

4. Background
• ECG Invention
• 3 lead Electrocardiogram
• 12 lead Electrocardiogram Invention

5. Objectives
• To Develop an “User Friendly Portable ECG Monitoring
Device”
• To get the fastest feedback from patient’s personal doctor
through the electrocardiogram result .

6. ECG Signal Parameter
• PR Segment
• QRS complex wave
• ST interval
• QT interval

7. Einthoven’s Triangle
• Standard Limb Leads (Bipolar): I, IlI& III
• Augmented Limb Leads (Unipolar): aVR, aVL&aVF

8. Project Components
• ECG Module
• Arduino Nano
• Raspberry Pi
• 5inch HDMI LED Display
• Sensor Cable - Electrode Pads

9. ECG Module(AD8232)
• Designed
• High Pass Filter
• Low Pass Filter
• Common Mood Injection
• Features

10. Pin Diagram(AD8232)

11. Schematic Diagram
• Architecture Overview
• Instrumentation Amplifier
• Operation Amplifier

12. Instrumentation Amplifier
• Trans conductance amplifiers
• Common-mode voltage range

13. LEADS OFF DETECTION
• DC Leads Off Detection
• AC Leads Off Detection

14. DC Leads Off Detection
The dc leads off detection mode is used in three-electrode con-
figurations only. It works by sensing when either instrumentation
amplifier input voltage is within 0.5 V from the positive rail. In
this case, each input must have a pull-up resistor connected to
the positive supply.

15. AC Leads Off Detection
The ac leads off detection mode is useful when using two
electrodes only (it does not require the use of a driven
electrode).In this case, a conduction path must exist between the
two electrodes

16. ELIMINATING ELECTRODE OFFSETS
The instrumentation amplifier in the AD8232 is designed to apply
gain and to filter out near dc signals simultaneously. This
capability allows it to amplify a small ECG signal by a factor of
100 yet reject electrode offsets as large as ±300 mV. To achieve
offset rejection, connect an RC network between the output of
the instrumentation amplifier, HPSENSE, and HPDRIVE

17. High-Pass Filtering
An addition to the topologies explained in the previous
sections, an additional pole may be added to the dc
blocking circuit for additional rejection of low frequency
signals. An extra benefit of this circuit topology is that it
allows lower cutoff frequency with lower R and C values
and the resistor, RCOMP, can be used to control the Q of
the filter to achieve narrowband-pass filters (for heart
rate detection) or maximum pass-band flatness (for
cardiac monitoring).

18. Arduino NANO
• Why I Used Arduino NANO?
• Microcontroller
• Basic Working Principle
• Key Features
• Key Applications

19. Arduino NANO PIN Diagram

20. ATmega328P
• Introduction
• Features

21. Arduino NANO Serial Plotter
• Why I used serial plotter ?

22. AD8232 To Raspberry pi Interfacing sing Adriano NANO
• To interface the circuit with raspberry pi,an Adriano is used
• The signal is feed into the analog input port A0 of the arduino
• Arduino is instructed to read the analog signal
• Arduino Performs ADC on the ECG signal
• Arduino is instructed to dump the data in a variable
• Arduino is instructed to initiate serial communication with
serial plotter with baud rate 9600
• Sampling frequency is 785 Hz

23. Serial Communication Between Arduino and Raspberry pi
• Serial communication is established between Arduino and
Raspberry pi using the same communication port and same baud
rate so that data from the Arduino can be sent to Raspberry pi.
• Number of samples Raspberry pi should store is specified. Arduino
sends one sample per milliseconds. Therefore, for ECG recording of
1 minute, 60000 samples were taken.
• Received data from the Arduino is dumped in an matrix array by
Raspberry pi.
• When the specified number of samples are taken, the
communication channel is terminated and Raspberry pi plots the
data it received from Arduino.

24. Raspberry Pi
• Why I used Raspberry Pi
• Which Model
• Processor
• CPU Core
• Key Applications

25. Raspberry pi 3B GPIO Header Pin Configuration

26. Raspberry Pi Key Features
• Now 10x Faster - Broadcom BCM2387 ARM Cortex-A53 Quad Core
Processor powered Single Board Computer running at 1.2GHz!
• 1GB RAM so it can now run bigger and more powerful applications
• Fully HAT compatible
• 40pin extended GPIO to enhance your “real world” projects.
• Connect a Raspberry Pi camera and touch screen display (each sold
separately)
• Stream and watch Hi-definition video output at 1080
• Micro SD slot for storing information and loading your operating systems.
• 10/100 Base Ethernet socket to quickly connect the Raspberry Pi to the
Internet

27. Sensor Cable – Electrode Pads
• How many lead I used?
• What types of sensor pad I used ?

28. Electrode Pads (3 connector) Placements
• Where I placed electrode in human body
• Why I used 3 lead why not 12 lead ?
• Basic difference between 3 lead and 12 lead
• Previous Work On 3 lead

29. 5inch HDMI Display
• Key Features
• Resolution

30. Block Diagram
Human
Body
3 lead
Electrode AD8232
5inch Led
Display
Web
Doctor Mail
Control Unit
Arduino
Nano
Raspberry pi
Cloud
Storage
Server
Apache
Server
Database

31. Flow Chart

32. Python GUI
• What is Platform Of Python GUI
• Used as a patient ECG form
• API Calling
• Basing Working Principle

33. Web Application
Register Panel

34. Doctor Dashboard

35. ECG Report

36. Results
Subject 1
Name Tanvir Rahman

37. Subject 2
Name :Muzibur Rahman

38. Working Principle
• Human Subject to AD8232
• AD8232 to Arduino NANO
• Arduino NANO working process
• Arduino NANO connected with Raspberry Pi
• Python GUI
• WEB Application
• Doctor Comment
• Personal Doctor Feedback

39. Future Work
 Add GPS tracking system in ECG device
 Add Pre Measured System from device

40. Conclusion
• Inexpensive portable ECG device
• User friendly Device
• Updated ECG report in WEB panel
• Sent ECG report to the patient personal doctor with proper
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