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

Normal

ECG?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.