1. MAHARAJA INSTITUTE OF TECHNOLOGY
DEPARTMENT OF ELECTRONICS AND COMMUNICATION
ENGINEERING

2. WIRELESS ECG TRANSMISSION USING ZIGBEE AND
MICROCONTROLLER
GROUP NUMBER : 11
GUIDE NAME : Asst. Prof - Harish kumar K.P
TEAM MEMBERS :
Apoorva shree M.S [4MH12EC404]
Manjesh K [4MH12EC415]
Namratha gowda M.P [4MH12EC419]
Pallavi G.R [4MH12EC421]

3. CONTENTS
 INTRODUCTION
 BLOCK DIAGRAM
 HARDWARE COMPONENTS
 SOFTWARE REQUIREMENTS
 FLOWCHART
 WORK PROGRESS

4. INTRODUCTION
o Wireless monitoring devices can make the biomedical system more
convenient.
o Wireless technology can be implemented inside biomedical areas
where there are several electrical devices that are connected
through long cables.
o So this project is an implementation of Electrocardiograph (ECG)
data acquisition and plotting wirelessly manner

5. BLOCK DIAGRAM

6. HARDWARE COMPONENTS
 ELECTRODES
 INSTRUMENTATION AMPLIFIER
 FILTERS
 MICROCONTROLLER
 ZIGBEE

7. ELECTRODES
• The ECG is converted into electrical voltage by electrodes.
• The disposable electrodes are attached to the patients skin and can be
easily removed.

8. INSTRUMENTATION AMPLIFIER
 The AD620 is a low cost, high accuracy instrumentation amplifier
that requires only one external resistor to set gain (Rg).
The AD620’s low power, low supply voltage instrumentation
amplifier.
It is available as 8-lead mini-DIP and SOIC package.

9. FEATURES
Gain : 10
Power supply : +/- 2.3V to +/- 18V
Current : 1.3mA
CMRR : 93dB – 110dB
Bandwidth : 1.2 kHz

10. FILTERS
The circuit consist of following filters
1.Band pass filter: It is the combination of HPF and
LPF.
It is designed to allow the frequency from 0.5Hz to
102Hz.
2.Notch filter: It is used to eliminate the power line
interference which occurs at 50Hz.

11. BAND PASS FILTER:
 It allows the frequency from 0.5hz to 102hz.

12. NOTCH FILTER
 Used to eliminate power line interference which occurs at 50hz.
 This filter rejects one particular frequency while passing all other
frequencies.

13. MICROCONTROLLER
Features:
 Supply voltage : 2.7 to 3.6v
 Flash memory : 8KB
 RAM : 768bytes
 Timers : 4 (16bits)
 I/0 Ports : 2 (8bits)

14. ZIGBEE
 Zigbee specification which suits for high level communication
protocol used to create personal area network.
 Zigbee is based on IEEE 802.15.4 standard.
 Zigbee devices can transmit the data over longer distances by
passing the data through a mesh network.
 XBEE - PRO ZB embedded RF modules provides cost effective
wireless connectivity to the devices in zigbee mesh network.

15. SPECIFICATIONS
Data rate : 250Kbps
Serial data rate : 1200bps – 1Mbps
Frequency band : 2.4GHz
Supply voltage : 2.7 – 3.6VDC
Range : 100m

16. ECG:
1.The ECG signal represents the electrical
activity of the heart.
2.The impulses are originated at
SINO ATRIAL NODE that is passed on to
the ATRIO VENTRICULAR NODE.

17.  PROGRAMMING LANGUAGE
Embedded C
 SIMULATION SOFTWARE
Proteus
 INSTALLED AT THE REMOTE NODE
1.XCTU software
2.Oscilloscope GUI
3.Eltima software
SOFTWARE

18. Flow chart
start
ec
sss
Acquiring ECG signals using electrodes
Amplification and filtering
Ecg signals are transmitted through the zigbee wirelessly
zigbee rx get
data?
Displaying the waveform on PC
stop
Yes
No

19. WORK PROGRESS
 WORK COMPLETED:
1. ECG acquisition is done and it is displayed on CRO.
2. Testing of ZIGBEE is done.
3. The hardware portion is completed.
 WORK TO BE DONE:
1. coding of the ZIGBEE is to be done.
2. ECG signal has to be transmitted wirelessly.
3. Extraction of BP from ECG is to be done.