Design of a Wireless Biosignal Monitor

Presented by: Hala MostafaTee Pamon Matthew MancusoBridget Matikainen & Simon Rubinsky

Biomedical Engineering Senior DesignProfessor Helmut StreyApril 29, 2009

Space in the Market• Hospitals

– Greater patient mobility– Inexpensive implementation

• OtherNursing Homes Home Care Research

1. Image taken from http://images.google.com/imgres?imgurl

2. Image taken from http://images.google.com/imgres?imgurl=https://vic.pvhs.org/webpix/orthopedic/ORTHO_RN_PATIENT_040.sized.jpg&imgrefurl

3. Image taken from http://www.superstock.com/resultsframe.asp?tag=index

4. Image taken from http://www.crestock.com/images/1040000-1049999/1040972-xs.jpg

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Design Requirements

Design Requirements

! X X

SMS Text Alert System

Evolution of the Wireless Biosignal Monitor Amplifier

Breadboard(NI Elvis Board)

Circuit board

Printed Circuit Board

http://visual.merriam-webster.com/images/science/physics-electricity-magnetism/electronics/printed-circuit-board.jpgzone.ni.com/cms/images/devzone/tut/04150816.JPG

Wireless Technology• SYNAPSE Wireless Advantages

•Inexpensive

•Easily encrypted (Security)

•Low power

•Range up to 1000ft indoors

•Establishes Mesh network

SNAP stick

SNAP Node ProtoBoard

Mesh Network

All images taken from www.synapse-wireless.com

ECG Signal• Bioelectric signal

• Displays the voltage difference

• Einthoven’s Triangle

Image taken and modified from http://www.medicine.mcgill.ca/physio/vlab/cardio/images/einthoven.jpg

SMS Messaging for Emergency Response

ECG signalaquisition

NormalECG?

Data to EMR

SMS Text Alert

NO

Future Improvements• Incorporation of RFID technology to quickly identify which patients are using which devices

• Multiple Signal Channels

References 1. Hu F, Calentano L, Xiao Y. 2009. Error-resistant RFID-assisted wireless sensor network

for cardiac telehealthcare. Wirel. Commun. Mob. Comput. 9:85- 101 http://www3.interscience.wiley.com.libproxy.cc.stonybrook.edu/cgibin/fulltext/117923052/PDFSTART.

2. Online digital filter and QRS detector applicable in low resource ECG monitoringsystems. Tabakov, Serafim; Iliev, Ivo; Krasteva, Vessela. Annals of BiomedicalEngineering (0090-6964)November, 2008. Vol.36,Iss.11;p.1805-1815

3. Crumley, Glen C., Noel E. Evans, and William G. Scanlon. "The Design and Performance of a 2.5-GHz Telecommand Link for Wireless Biomedical Monitoring.“ IEEE Transactions on Information Technology in Biomedicine 4 (2000): 285-91.

4. SYNAPSE RF Engine IEEE 802.15.4 RF Modules. < http://www.synapsewireless. com/documents/products/SYNAPSE_RF_Engine.pdf> Accessed December 19,2008.

5. SYNAPSE Evaluation Kit EK2100. < http://www.synapsewireless. com/documents/products/SYNAPSE_EK2100_StarterKit.pdf> Accessed December 19, 2008.