Design and Implementation Data Receiver Application of Digital Electrocardiograph Monitoring System Based on Wireless LAN (802.11b)

1. DESIGN AND IMPLEMENTATION DATA RECEIVER
APPLICATION OF DIGITAL ELECTROCARDIOGRAPH
MONITORING SYSTEM BASED ON
WIRELESS LAN (802.11b)
Riko Saputra
111030085
1st Advisor
Achmad Rizal, ST, MT.
2nd Advisor
Koredianto Usman, ST, MSc.

2. # Background
• Eficiency of digital electrocardiograph (ECG) monitoring device
• Wireless LAN 802.11b has wider range
• Data transmission is more stable
• Wireless LAN 802.11b has ISM (Industrial Scientific Medical)
Standard
• Easier for existing network integrated
• Structured and integrated database system for patient’s medical
record

3. # Purpose
• Realization wireless LAN application for electrocardiograph
monitoring system that can produce electrocardiograph graphic
about the condition of patient’s heart.
• Making for data management application system for patient’s heart
health with computer database, so it more easier to manage and
centralize data.
• Understanding of wireless LAN 802.11b transmission system and
applicated in electrocardiograph monitoring system

4. # Problems
• Receive data from digital electrocardiograph that transmitted
through wireless LAN.
• User interface on the computer.
• Show the electrocardiograph signal received from digital
electrocardiograph that transmitted by wireless LAN module.
• Accuracy of patient’s heart signal that showed on monitoring
application.
• Centralize and easier for data access for patient’s heart health data.

5. # Limitation
• Application developed with Borland Delphi 7 and it socket network
programming.
• Received data come from digital electrocardiograph based on 8 bit
microcontroler that transmited with embeded wireless LAN module.
• Using Wireless LAN class 802.11b.
• Do not discuss about wireless LAN transmission in detail.

6. # Elektrocardiograph
• Device to detect heart signal.
• Receive data from tranducer that transform blood stream into
electric so it can transmitted through wire.
Pasien
EKG

7. # Electrocardiogram
• The result of heart detection
signal with electrocardiograph
(electrocardiogram)
0,06 - 0,10 dtkQ-R-S0,1 – 0,5 mVT
0,05 – 0,15 dtkS-T25% dari RQ
0,35 – 0,44 dtkQ-T1,6 – 3mVR
0,12 – 0,20 dtkP-R< 0.3mVP
DurationECG IntervalAmplitudeECG Wave

8. # Electrocardiography Technique
• Standard Clinical ECG
– Using 12 Lead. Used to analyze patient’s heart condition
• Vectorcardiogram
– Modeling of body potential as 3 dimension vector with bipolar
Einthoven tapped. Using 3 lead.
• Monitoring ECG
– Using 1 or 2 electroda that stick on certain point that used to
monitor patient’s heart health in a long duration.

9. # Vectorcardiogram
• Vectorcardiogram is one of few
technique for taking sample of heart
signal.
• Using Einthoven triangle
configuration.
• Only use 3 lead.
• Can represent about the heart
condition.

10. # Wireless LAN (802.11b)
• IEEE (Institute of Electrical and Electronics Engineering) Standard
for wireless LAN class.
• Using air as a medium to sending data frame.
• Data transfer rate up to 11 Mbps.
• Using frequency that allowed with ISM (Industrial, Scientific and
Medical) standard which is 2.4GHz.
• Wireless range up to 328.09 feet.

11. # System Design
Monitoring
Application
Digital ECG with
Embedded Module
Wireless LAN
Database
Server

12. # Monitoring Application
Monitoring application is an application that receive data from sender
that send heart condition as data bit. This application is placed on
heart specialist’s computer and then can display electrocardiograph
graphic, so he can check heart condition.

13. # Monitoring Application
• First the application open the port to
communicate with embedded
wireless LAN device.
• Verify is that any data that
transmitted through wireless LAN
channel.
• The result of heart signal if buffer
form then displayed on computer.
• After the data displayed, then it save
in database for next analyze.
Mulai
Mulai terima
data
Konversi data
Koneksi
Berhenti
Data disimpan
dalam database
Selesai
Ya
Ya
Data ditampilkan
dalam grafik Tidak
Load Data
Data ditampilkan
dalam grafik
Data Habis
Tidak
Ya
Tidak
Tidak
Ya

14. # Database Server
• Using MySql as database server.
• Data that stored is an array that produce with electrocardiograph
digital.
• Stored database is easier for process and more safety.
• Database server specification
– FreeBSD Operating System
– Processor Intel Pentium III 800 MHz
– Memori RAM 128 MB
– Hard Disk Storage 120 GB
– Lan Card 100/100 Mbps

15. # Database Server
• Interconnection between application and database server using
MySql-ODBC connection.
Aplikasi Monitoring
EKG
Mysql – ODBC
Interconnection
MySql Database
Server

16. # MySql – ODBC Connection

17. # Electrocardiograph Graphic Result
Graphic from WiFi Electrocardiograph Monitoring System
Graphic from common Electrocardiograph

18. # Wireless Network Performance
• 1st
Scenario :
– In the same room with embedded wireless LAN module.
• Mean Delay: 0.0000504 Second
• Mean Jitter: 0.0000274 Second
• 2nd
Scenario :
– Other room with embedded wireless LAN module.
• Mean Delay: 0.01892 Second
• Mean Jitter: 0.0008429 Second
• 3rd
Scenario :
– 50 meter from embedded wireless LAN module
• Mean Delay: 0.0209 Second
• Mean Jitter: 0.000578 Second

19. # Suggestion
• Need more less complex algorithm to detect QRS signal.
• Using development environment that can be run under portable
device.

20. Thank you
DESIGN AND IMPLEMENTATION RECEIVER APPLICATION OF DIGITAL ELECTROCARDIOGRAPH
MONITORING SYSTEM BASED ON WIRELESS LAN (802.11b)
Further Information :
http://rikosaputra.com/biomedic

21. # Referece
• Wardana, Khusni Eka ST, 2005, Desain dan Realisasi
Receiver Sistem Telemetri dan Pemantauan
Elektrokardiogram Wireless Dengan Modulasi Ask,
Tugas Akhir STT Telkom, Bandung.
• Aston, Richard, 1991, Principles of Biomedical
Instrumentation and Measurement, Merril.
• Sauter, Martin, 2006, Communication System for the
Mobile Information Society, John Willey & Sons.
• Mir, Nader F., 2006, Computer and Communication
Network, Prentice Hall.
• Graba, Jan, 2007, An Introduction to Network
Programming with Java, Springer.
• Zukowski, John, 2002, Mastering Java 2 J2SE 1.4,
Sybex.