Health Monitoring Team Final Presentation

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Health Monitoring TeamFinal Presentation

• Dave Delmage, Paul Novick,
• Chris Morecroft

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Overview

• Goals
• Design Prototype Details
• Ethical Issues
• Future Steps

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• Semester Goal
• Integrated and Operational
• Collection area
• Complete separation of liquid and solid waste
• Flow System
• Quick and accurate transport of urine to testing
  region,
• Negligible contamination between users
  

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• Future Goals
• Urinalysis--Network Link
• Feedback
• Dietary
• Emergency hazard detection
• Additional Health Measurements
• Weight, Body Fat, Pulse Rate

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Prototype Design / Prototype

• Bowl Design
• Eductor / Flow System Design
• Microcontroller Design

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Materials Selection - Bowl

• Contact Angle Test
• Final bowl material selected based on these
  results and projected machinability
• Ceramic chosen as optimal material

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Fabrication - Bowl

• Major Roadblock
• By the time fabrication began, it would take too
  long for ceramic to cry
• Resolution
• Need for easy machining, resistant to corrosive
  environments, waterproof
• So, linoleum!

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Bowl Results

• Once built, the bowl functioned satisfactorily
• Separation of liquids works 100 (usually)
• Problems
• Leaks
• Solids getting stuck

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The Bowl
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The Future - Bowl

• Use ceramic
• Steeper angles
• No epoxy on sides
• Eventually - 3D

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Eductor System Testing

• Issues Arisen
• Eductor Does Not Provide Desired Suction
• Urinalysis tubing of inadequate diameter
• Solution
• Eductor system placed below toilet so as to be
  augmented by gravity.
• Alternate tubing acquired

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Design Changes

• Eductor System Placed Below Bowl
• Will use gravity to improve flow
• In response to poor eductor performance
• Flush System Implemented
• Adds greater degree of realism to toilet

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Results

• Sample is sucessfully taken
• Urinalysis Apparatus is Adequately Cleaned after
  each use
• Flush System works as desired.

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Potential Changes Not Implimented

• New Eductor
• Current eductor is inadiquate or faulty
• Replacement would allow designs potential to be
  more fully realized
• New Fittings
• Use of valves and eductor that fit together would
  reduce the number of fittings used, greatly
  decreasing size of eductor system
• Allow for greater flexibility of implementation

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Microcontroller Circuit Design

• System Hardware
• 12 Watt, 12 VDC Solenoid Activation
• PIC16F676
• Sharp GPD205 IR Range Finder
• 12 V Lead/Acid Battery Trickle Charger Power
  Supply Pair
• Independent Housing

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Solid Detector

• Moderate detection ability
• Digital Application
• In future, use analog device
• Limited to 20Hz detection
• Design Location
• Detection cycle

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Testing Procedure

• Microcontroller Timing
• Guess and check on timing routine
• Object Detection
• Glass/water detection
• Range of detection
• Detection Speed

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Future Considerations

• Water-electronic separation
• Analog solid detector
• Low power solenoids

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Ethical and Privacy Issues

• Confidentiality of Results
• What means will be taken to ensure medical data
  is not compromised.
• Opt Out
• Will there be a means for a user to ensure their
  data is not collected
• Notification of User
• Will the user be notified of tests conducted

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Confidentiality

• Security of Records
• It is imperative that any medical records kept by
  a smart toilet remain confidential
• Computer must have some form of user verification
• Firewall/Restricted Network Capabilities
• Encryption of Data

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Opt Out

• Unless alternate bathroom facilities will be
  provided it is imperative that users be given the
  ability to opt out of urinalysis.
• Could be implemented by the installation of a
  second button which automatically initiates the
  reject sequence

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Notification

• Some users may not be aware of toilets
  capabilities
• Different toilets may have different tests
  installed
• Toilets must have some markings to notify user of
  tests conducted by a particular unit.

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Future Steps

• Urinalysis device
• Insertion
• Digital Control
• Linked Output
• Sensors in toilet seat
• Used for body fat, weight, etc.

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Summary

• Goals
• Design Prototype Details
• Ethical Issues
• Future Steps

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Questions?