EECS, Peking University
19.05.2009 1
Wireless ECG Healthcare Monitoring System
Bingli Jiao & Yuping [email protected]
[email protected] & Satellite Communication Lab
EECS, Peking University, China
EECS, Peking University
19.05.2009 2
Outline
BackgroundSystem descriptionsHardware implementationsPerformancesFurther works
EECS, Peking University
19.05.2009 3
Background
The population of orders has increasedDifficult to accommodate all senior citizens in hospitalsNursing homes is preferable healthcare mode for privacy and lower costs Using devices to act as nurses
EECS, Peking University
19.05.2009 4
Background
Technical possibilitydevelopment of wireless communication technologies impact on our life worldwide Wireless Healthcare Monitoring System is possibleTwo types wireless networks can be used
mobile networkwireless local area network (WLAN).
EECS, Peking University
19.05.2009 5
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 transmissionsTele-medical can be performed at low cost
User centric service with ubiquitous computingTechnology of wireless transmission for quality of medical servicesClassifying and grouping the medical information into the services
EECS, Peking University
19.05.2009 6
wireless monitoring system-Developed by Peking University (PKU)
EECS, Peking University
19.05.2009 7
Wireless transmission systemsWireless LAN (WiFi)Wireless Personal area network (WPAN) -Zigbee
EECS, Peking University
19.05.2009 8
Zigbee description
EECS, Peking University
19.05.2009 9
characteristics of Zigbee2.4GHz and 868/915 MHz dual PHY modesLow power consumption, with battery life ranging from months to yearsMaximum 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 networks50m typical rangeDifferent topologies: star, peer-to-peer, mesh
EECS, Peking University
19.05.2009 10
Zigbee Topology
Full Function Device
Reduced Function Device
Communication Flow
PAN Coordinator
PAN Coordinator
Star Topology Peer-to-Peer Topology
EECS, Peking University
19.05.2009 11
data stream in the ECG system
Internet Medical Server
PersonalServer
Location(GPS)
Temperature& Humidity
SpO2
ECG
MotionSensors
MonitorGenerte warningsConfigure NetworkDescribe syptoms
EECS, Peking University
19.05.2009 12
network diagram of the ECG system
home
home
hospital
Home terminal
Home terminal
Hospital terminal
Hospital terminal
Hospital terminal
Access point
Nurse terminal
Server
Normal monitor
SMS Alarm
Data base
Doctor terminal
Data collecting
Data Processing
Monitering
EECS, Peking University
19.05.2009 13
Three generation patient terminalFirst
generation
Using WiFi for wireless data transmission
EECS, Peking University
19.05.2009 14
Three generation patient terminal
Second generation
Using WiFi for wireless data transmission
EECS, Peking University
19.05.2009 15
Three generation patient terminal
Third generation
Using WPAN 802.15.4 for wireless data transmission
EECS, Peking University
19.05.2009 16
System Performances
Working in the 2.4GHz Band200Hz sampling rate for each data packet of 17BytesThe raw ECG data rate for a single user is about 3.4Kbyte/s
EECS, Peking University
19.05.2009 17
System Performances
Both the sensor terminal and the hospital terminal are developed by PKUThe wireless transmission is connected: sensor – Internet - hospitalThe system testing is finished with very good performanceThe software and hardwire are ready for the real product
EECS, Peking University
19.05.2009 18
Interface of patient terminal
EECS, Peking University
19.05.2009 19
Interface of hospital terminal
EECS, Peking University
19.05.2009 20
Future WorksThe 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.
EECS, Peking University
19.05.2009 21
Future WorksTechnical works:
Continue to improve the system in terminal miniaturizationFurther reduce the cost and sizeIncrease the mobility and make more convenience terminal device.Increase system reliability
Application related worksFind a suitable situation for the applicationsMake real testing during the projectFind some industry partners for product devolopment
EECS, Peking University
19.05.2009 22
Suggestions are welcomeTechnical suggestions
To increase the system performancesMedical suggestions
Suggestion from terminal usersSuggestions from hospitals: doctors and nurses
Application suggestionsPractical cases for utilizationsApplication and testing during this joint project
Commercial suggestionThe way of become real products
EECS, Peking University
19.05.2009 23