Team Members

1
Medication Adherence

• Team Members
• Cara Dunn
• Farshad Fahimi
• Sujan Bhaheetharan
• Nipun Yamdagni

2
Problem Statement

• Construct a device with the ability to record
  time date information during daily operation of
  a patients standard medication box.
• Stationary alarm should be attached in order to
  alert the user to take medication.
• Information should be easily accessed on a
  computer for the client and patient to discuss,
  in efforts to ensure proper adherence.

3
Client Requirements

• Device must obtain data regarding patients
  adherence of their medications.
• Lightweight and durable.
• An alarm should alert patient
• Total prototype cost may not exceed 300.
• Normal use, includes cleaning the device, may not
  interfere with recording.
• Must consume low amounts of power.

4
Motivation Significance

• Compliance Taking correct amount of the
  prescribed medicine at the correct time.
• Medicine is only helpful when taken correctly.
• Only 24 of people take their medicines
  correctly.
• Non-compliance causes 125,000 deaths per year in
  the USA.

5
Last Semesters Design

• Texas Instruments MSP430 microcontroller with
  development kit
• Program in C language
• Recognized open compartments
• Used a 7x4 pill box
• Switches activated by compartment
• Lids
• Activation recorded by the microcontroller
• Switch matrix utilized

6
Design Limitations

• Only had 2x2 switch matrix
• Switches were not always activated
• No time-keeping method
• Lack of sleep function
• Parallel port interface
• No computer software for interface with pillbox
• Cost
• The MSP430 microcontroller is too expensive for
  our need

7
Overview of Current Design

• Altered existing parts
• Switches
• 7x4 Pill Box
• Adding new functionality
• Power saving functionality
• Accurate time keeping
• USB Interface
• Smaller than previous design
• Computer interface

8
Solution to Switch Problem

• Altered individual lids
• Plexiglas makes flat surface for switch actuation
• Higher accuracy
• More information from Sujan

9
New Microcontroller

• MicroChips PIC 18F4550
• Cheaper
• More widely known
• Allows the use of the B.A.S.I.C. programming
  language
• Easier to interface with
• Clock
• USB

10
Electronic Components
DLP-USB232M

• USB to Serial (TTL) converter
• Allows communication between microcontroller and
  almost any computer
• Watch chip
• Allows the microcontroller to keep accurate time
• Gives non-volatile storage memory

DS1307
11
Alarm

• Auditory, visual, and vibratory alarm possible
• Further investigation required to determine which
  alarm techniques will be used.
• Alarm times are variable

12
Computer Interface

• Allows the setting alarm schedule
• Allows download
• of patient data
• Easy to use and navigate

13
Present Accomplishments

• Established communication between microcontroller
  and PC
• Installed Plexiglas to increase stable contact
  area between the compartment lid and switch
• Began writing code in B.A.S.I.C.

14
Future Work

• Convert code from C programming language to
  B.A.S.I.C.
• Implementing time functionality
• Integrate alarm clock
• Test entire prototype
• Have final circuit printed

15
Questions

• References
• VIASYS Healthcare, Inc.
• University of Wisconsin Madison Medical
  Electronics Lab
• http//www.dipdesign.com/usb/usb232.html
• http//www.sparkfun.com
• http//www.microchip.com