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CRC Dinamap Senior Design Project:Preliminary Design Review
John DlugokeckiSteven SearcyRobbie RutherfordArif Mohd Zahari
January 29, 2009
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Project Overview
Sponsor: Carlos Orozco, Informatics Manager, Vanderbilt Clinical Research Center (CRC)
Goal: Develop a system that provides automated measurement and collection of vital signs data using the GE Dinamap vital signs monitor and automatically uploads the data to the CRC database
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Project Equipment
Dinamap Critikonold equipmentneeds to be phased out
Dinamap Pro 1000 Dinamap ProCare
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Current System
Using outdated PC running Windows 95, to collect data from Dinamap Critikon over serial port
Computer polls machine and locally stores data to Microsoft Access file
Data is then stored on a floppy disk so that nurses can transfer data to server using a different machine need to eliminate this step
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Previous Project
Similar senior project from 2004-2005 Solution utilized serial-to-bluetooth adapter to
send data from Dinamap to a PDA running LabVIEW
Data stored locally and sent over 802.11b wireless network to SQL server.
This solution was functional, but was not implemented due to inconsistency of bluetooth connection.
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Project Requirements
The system: Shall be able to take blood pressure and heart
rate data at regular intervals over several days Shall be highly reliable, using redundancy to
protect against lost data Shall be able to uniquely identify and match data
to a patient (timestamp, patient ID, study ID) Shall store all data locally then securely upload
data to CRC database over wireless local area network (IEEE 802.11b)
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Project Requirements
Should be easy to use by nurses Should require minimal user input to start data
collection Shall be able to set regular time interval for data
collection Shall provide visual feedback for investigator to
preview measurement trends during the study
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Potential Solutions
Hardware FPGA PDA Device Desktop Computer Laptop Computer
Software Linux Windows
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Comparison of solutions
Design Factors
HardwareSolutions
GUI(20%)
Cost(5%)
Size(15%)
Performance (processor speed, memory)
(20%)
Versatility(10%)
Reliability(30%)
FPGA No Low Small Low Low Med
PDA Yes Med Small Med Med Low
Desktop Yes High Large High High Med
Laptop Yes High Med High High High
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Proposed Solution
Use a laptop to interface with Dinamap monitor through serial port
Collect data and store locally on laptop hard drive
Upload data to CRC server over wireless network (IEEE 802.11b)
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High Level System Diagram
Patient
Serial connection
Wireless LAN
Server
Nurse
Dinamap Pro Series
Laptop
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High Level Software Diagram
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Resources Available
GE has provided DLL file with basic functions to communicate with Dinamap ProCareThis includes sample workflow and sample
applicationMust run on Windows OS
CRC will provide laptops
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GE Sample Application
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XML string from getState<?xml version="1.0" encoding="ASCII"?><Vitals><Vendor>General Electric Healthcare</Vendor><Model>Pro/Procare</Model>
<Result name="Mean_arterial_pressure"><Value>86</Value><Units name="mmHg"></Units><Time_stamp year="2008" month="11" day="18" hour="12" minute="33" second="14"></Time_stamp>
</Result><Result name="Systolic_blood_pressure">
<Value>130</Value><Units name="mmHg"></Units><Time_stamp year="2008" month="11" day="18" hour="12" minute="33" second="14"></Time_stamp>
</Result><Result name="Diastolic_blood_pressure">
<Value>67</Value><Units name="mmHg"></Units><Time_stamp year="2008" month="11" day="18" hour="12" minute="33" second="14"></Time_stamp>
</Result><Result name="Pulse">
<Value>73</Value><Units name="BPM"></Units><Method>blood_pressure</Method><Time_stamp year="2008" month="11" day="18" hour="12" minute="33"
second="14"></Time_stamp></Result></Vitals>
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ProCare/Laptop station
Carlos has suggested a smaller laptop (10-12”) to fit on the rack with the ProCare
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Laptop selection
Our sponsor has several tablets with which we can develop (Toshiba Proteges)
These are older laptops which are actually less powerful than the netbooks we are considering purchasing
Purchasing new laptop(s) will occur after we develop a working system
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Serial port adapter
Our sponsor has provided us with Serial to PCMCIA card adapters SIIG High-Speed Single Serial PC Card
These have worked reliably for him We were able to successfully test them
with the Dinamap monitor We will need a netbook
with a PCMCIA slot
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Serial port adapter
We are also going to test a serial-to-USB adapter
We have ordered one from Lewis Saettel This would allow for better system
adaptability in the future May be unreliable
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Schedule
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System Demo