EECS, Peking University
Wireless ECG Healthcare
Monitoring System
Bingli Jiao & Yuping Zhao
jiaobl@pku.edu.cn
Yuping.zhao@pku.edu.cn
Wireless & Satellite Communication Lab
EECS, Peking University, China
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EECS, Peking University
Outline
Background
System descriptions
Hardware implementations
Performances
Further works
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EECS, Peking University
Background
The population of orders has increased
Difficult to accommodate all senior
citizens in hospitals
Nursing homes is preferable healthcare
mode for privacy and lower costs
Using devices to act as nurses
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EECS, Peking University
Background
Technical possibility
development of wireless communication
technologies impact on our life worldwide
Wireless Healthcare Monitoring System is
possible
Two types wireless networks can be used
mobile network
wireless local area network (WLAN).
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System descriptions
Wireless Healthcare Monitoring System—
ECG(Electrocardiogram)
PKU has developed wireless ECG devices – for the
heart remote monitoring
Internet and software/hardware enable the network
for real-time transmissions
Tele-medical can be performed at low cost
User centric service with ubiquitous computing
Technology of wireless transmission for quality of
medical services
Classifying and grouping the medical information into
the services
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wireless monitoring system
-Developed by Peking University (PKU)
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Wireless transmission systems
Wireless LAN (WiFi)
Wireless Personal area network (WPAN) -Zigbee
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Zigbee description
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characteristics of Zigbee
2.4GHz and 868/915 MHz dual PHY modes
Low power consumption, with battery life ranging from
months to years
Maximum data rates are: 250 kbps (2.4 GHz), 40 kbps
(915 MHz), and 20 kbps (868 MHz)
High throughput and low latency for low duty-cycle
applications (<0.1%)
Addressing space of up to 64 bit IEEE address devices,
65,535 networks
50m typical range
Different topologies: star, peer-to-peer, mesh
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Zigbee Topology
Star Topology Peer-to-Peer Topology
PAN Coordinator
PAN Coordinator
Full Function Device
Reduced Function Device
19.05.2009 Communication Flow 10

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data stream in the ECG system
ECG
Monitor
Generte warnings
Configure Network
Describe syptoms
Motion
Sensors
Personal
Server
Internet Medical Server
Location
(GPS)
SpO2
Temperature
& Humidity
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network diagram of the ECG system
SMS Alarm
Home terminal Normal monitor
home
Home terminal
Server
home
Data base
Hospital terminal
Hospital terminal Access point
Doctor terminal
hospital
Hospital terminal
Data collecting
Data Processing
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Nurse terminal
Monitering

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Three generation patient terminal
First
generation
Using WiFi for wireless data
transmission
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Three generation patient terminal
Second
generation
19.05.2009 Using WiFi for wireless data transmission 14

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Three generation patient terminal
Third
generation
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Using WPAN 802.15.4 for wireless data transmission 15

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System Performances
Working in the 2.4GHz Band
200Hz sampling rate for each data packet
of 17Bytes
The raw ECG data rate for a single user is
about 3.4Kbyte/s
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System Performances
Both the sensor terminal and the hospital
terminal are developed by PKU
The wireless transmission is connected:
sensor – Internet - hospital
The system testing is finished with very
good performance
The software and hardwire are ready for
the real product
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Interface of patient terminal
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Interface of hospital terminal
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Future Works
The experimental results and analysis verified that the
system has a friendly user interface and good stability,
with great practical potential. The diversification of the
system terminal also makes the system applicable to a
variety of scenes.
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Future Works
Technical works:
Continue to improve the system in terminal miniaturization
Further reduce the cost and size
Increase the mobility and make more convenience terminal
device.
Increase system reliability
Application related works
Find a suitable situation for the applications
Make real testing during the project
Find some industry partners for product devolopment
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Suggestions are welcome
Technical suggestions
To increase the system performances
Medical suggestions
Suggestion from terminal users
Suggestions from hospitals: doctors and nurses
Application suggestions
Practical cases for utilizations
Application and testing during this joint project
Commercial suggestion
The way of become real products
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