Vital Signs Monitoring System VSMS

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Vital Signs Monitoring System(VSMS)
The Future of Patient-Care Technology March 29,
2002

• Group Members
• Steve Rotolante (CpE)
• Suzanne Pittner (CpE)
• Kenneth McCarthy (EE)
• Jonathan Campbell (EE)

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Purpose/Motivation

• To create a wireless system that fits on the
  clients wrist and finger that will periodically
  read the clients vital signs and transmit them to
  a central computer for monitoring.
• The system will be used for patients in an
  intensive care and/or rehabilitation environment.
• To create a project that would somehow make
  patient care easier for doctors and nurses in a
  hospital environment.

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Description

• VSMS Unit

• Fit
• on Wrist and Finger ( wrist unit - 5x2x1.5)
• LCD Display
• Wireless transmitter
• All sensors required to take proper measurements
• Rechargeable power supply with ac adaptor
• Water resistance to account for sweat
• Wireless receiver
• GUI
• Database to store all data taken by VSMS

• Desktop Computer

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Sensors

• Sensors will calculate heart rate, temperature,
  and oxygen density
• Heart rate and Temperature will be calculated
  directly on the VSMS unit while the Oxygen
  density will be a finger unit. (All Measurements
  will be taken continuously)
• Optional sensors can be added to calculate Blood
  Pressure and Muscle Tension.

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Vital Sign Parameters

• Temperature Normal 98.6oF
• Out of Range if Temp lt 98.0oF or Temp gt 99.0oF
• Heart Rate Max Heart rate 220 age.
• Oxygen Density Normal 92
• Out of Range if OD lt 92

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Micro Controller

• Calculates the necessary values such as heart
  rate per minute, blood pressure, etc
• Data will be sent to onboard memory chips for
  wireless transmission and LCD display.

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LCD

• LCD display will be attached to the VSMS device
  to let user see his or her status.
• Will Display all measurements taken by the
  sensors.

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Memory

• Memory will be used to store the measurements in
  a buffer.
• Periodically, the transmitter will send this data
  to the computer. Then the buffer is reset and
  ready for more data.

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WirelessTransmitter

• Onboard VSMS unit
• Linx KH TXE 433 transmitter/encoder
• 433 MHz Frequency
• 300 Ft Range
• 3V Operating Voltage
• Dimensions 1.22L X 0.63W X 0.18H

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WirelessDesktop Receiver

• Linx KH-RX 433 receiver/decoder
• 433MHz ¼ wave monopole Antenna
• Receiver will connect to desktop computer via 9
  pin serial port
• 2.7 to 4.2 V Operating Voltage
• Dimensions 1.43L X 0.63W X 0.18H

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Wireless

• Data collected from sensors will be processed by
  CPU into a Hexadecimal word that is transmitted
  to the desktop computer
• The FCC has designated a bandwidth specifically
  for Wireless Medical Telemetry Devices 608 to
  614MHz, 1395 to 1400MHz and 1429 to 1432MHz.
• By limiting access to these frequencies, the
  amount of electromagnetic interference (EMI)
  transmitted is reduced. The noise in the vital
  signs readings will be minimized.

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GUI

• A GUI will be made using Java, giving the program
  flexibility to run on almost any platform.
• The doctor or nurse will be alerted if the vital
  signs drop or go above a set threshold.
• The patients vital signs stored into a database
  numerically and graphically.

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Block Diagram
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Block Diagram
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Financing and Budgeting

• Project Budget 848
• Project Financing
• LCD screen 5
• Buttons 20
• Board 10
• AC adapter 10
• Batteries 20
• Micro controller donated by Microchip
• Transmitter/receiver 48
• Case 20
• Sensors 200
• Miscellaneous 25

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Timeline