PRELIMINARY DESIGN REVIEW P09321 – AUTOMATED MEDICINE DISPENSER DATE ( ) ‏ Michael Boquard (CE) ‏ Felix Feliz (ME) ‏ Rebecca Jaiven (EE) (Lead Engineer) ‏ Matthew Jones (ME) ‏ Shuaib Mansoori (EE) ‏ Justin Zagorsk (IE) (Team Leader) ‏ 1

OVERVIEW 1. Intro 2. Roles & Responsibilities 3. Customer Requirements HOQ 4. Engineering Specifications 5. Summary of Concept Selection 6. Summary of Selected Concepts 7. Electrical System Summary 8. Software System Summary 9. Schedules 10. Risks & Issues 2

INTRO – PROJECT DESCRIPTION o Produce a robust prototype that dispenses medication on a time-bases to patients in a secure and accountable environment. o Allow to dispense a week’s supply of up to 6 different pills for two patients accessed twice daily. o Reliable and compact electro-mechanical dispensing system that can be controlled by a common laptop. 3

INTRO - SCOPE Start with a working prototype. ~5 years outdated Modify to meet customer needs/specs. Deliver functioning prototype by end of MSDII. 4

INTRO – Target End User One who takes medication on a regular basis, is technological capable*, and desires to have their medication in a safe and secure environment. * a technology capable person is familiar with basic computer functions and/or has the willingness to learn. 5

ROLES & RESPONSIBILITIES Justin Zagorski (IE) Team Leader Rebecca Jaiven (EE) Lead Engineer Michael Boquard (CE) ‏ Felix Feliz (ME) ‏ Matthew Jones (ME) ‏ Shuiab Mansoori (EE) D. Phillips (EE) ‏ E. Hanzlik (ME) ‏ John Veenstra GUI & Interfacing Design & Manufacturing Electrical Components & Circuitry Faculty Guide Faculty Advisor Sponsor 6

Critical Customer Needs and Engineering Specifications Customer Needs 1. Laptop Interface ° Security™ a. Ensure accountability for delivery and distribution of medication. 3. Properly and Reliably Dispense Medication a. Dispenses medication for two people, twice a day for a week, for six different medications each distribution. 4. Portable Engineering Specs 1. Biometric Access a. CN of security/laptop 2. Software properly access appropriate location and no mechanical failures a. CN properly and reliably dispenses medicine 3. 4 levels of user access a. CN security 4. Size/weight limits a. CN portability 7

CUSTOMER REQUIREMENTS 8

SPECIFICATIONS 9

Hardware Concept Selection Criteria Size Security – visibility of medication Scalability Simplicity Reliability Ease of Use – customer interface Return Area Packaging – external housing unit 10

Top 3 Designs See full PUGH in Appendix A 11 Datum123 Size Security Scalability Simplicity Reliability Ease of Use Return Area Packaging 0 01 ++ +0 -- -0  0678 Scale: 0 is neutral 1 is positive -1 is negative

Selected Design First Iteration Empty Return Collapsible Legs Hinges Collapsible Ramp ProCon Collapsible LegsShort Ramp Collapsible RampEmpty Cartridges can stack up Return SlotLarge footprint 12

Second Iteration 13 Change MadeReason Return locationNarrower footprint; more space in return compartment Ramp DesignRamp can fully extend Unfolded Collapsed *Collapsed dimensions: 11”x11”x6” Front views Rear views

Existing Electrical System Schematic in Appendix B 14

Proposed Electrical System 15

System Level Changes - Electrical 16 ExistingChangeReason 3.3V RegulatorRemove Not necessary to power components Mux/ DemuxRemoveReplace with FPGA System ROMUpdateOld Technology Non-standard connectorChangeTo USB 2.0 for standardization Memory Card ConnectorRemoveReplace with Laptop MicrocontrollerRemoveReplace with Laptop FPGAUpdateOld Technology

Firmware Data Flow 17

Levels of User Access 18 o User 1 – Patient o User 2 – Pharmacist o User 3 – Delivery o User 4 – Administration The prescription is changed by the Doctor who informs that pharmacist who changes the pills placed into the cartridge.

User 1

Patient Process 20

User 2

Refill Process 22

User 3 change *New to Delivery

User 4

Admin 25

Firmware Finite State Machine (FSM) 26

Preliminary System Integration o Mechanical- Electrical Electrical will mount on prototype on designated space Electrical will power Nitinol drivers o Electrical-Software Software controls TTL signal that sends signal high 27

Engineering Assumptions Aluminum 1100 O ν=.33 E=10.1 Msi T=.09 P= 7.5 lb Yield Strength= 20ksi Loading case 1: 2- 1” hinges applied 2in from each end Loading case 2: 1 3/8” wide welded rail holding a total of 1.94 lbs

Engineering Analysis Leg analysis Maximum stress: 455.9psi Maximum deflection:.00185in in z-direction Rail analysis Maximum stress: psi Maximum deflection:.322X in

Engineering Analysis Conclusions The stresses and deflections incurred for both the leg and rail are well below the maximum allowed tolerances for the individual parts. This indicates that the thicknesses assigned and the materials selected fit well with our design. And confirms that the mechanical design is sound.

MSDI Timeline 31

MSDII Timeline *need to create another critical path 32 Appendix C is Microsoft Project

RISKS 5 – Life Threatening 4 - Nonfunctional Prototype 3 – Fixable Glitch 2- Outside of Design Control 1 – Not critical to functionality RiskLevelOwnerHow to Mitigate False positive/negative on biometric scanner5BeckyUse best possible scanner within budget Incorrect medication fill5MikeIndividual held accountable - datalogging, pick list Dispensing from incorrect location5TeamDouble-check programming, circuitry Hardware compatibility (USB drivers)4Mike/ BeckyTest on multiple computers, make sure drivers are up to date Unauthorized access4Mike/ BeckyFingerprint access, any access is logged Power Outage4Becky/ ShuaibBackup battery possible Dropping / Impact3Matt/ FelixEnsure case design is robust Biometric scanner malfunction3Mike/BeckyUsers will have a backup PIN OS compatibility3MikeTest on multiple computers, include necessary software Firmware patches3MikeEnsure updates can be made easily using OS Incomplete or Incorrect Documentation3JustinEvaluate and organize Mechanical Jam3Matt/ FelixCareful selection of hinges/validation testing User forgets to take medication2MikeAlarm/indicator on unit Pill breakage2Matt/ FelixPad cartridge caps Return slot full2Matt/ FelixProperly sized return area Water damage1Matt/ FelixAlert users with warning label Excessive Weight1Matt/ FelixRe-evaluate Concept Selection 33

ISSUES (Most important to least) ‏ 1. Time 2. Scope Creep 3. Availability of machine shop/electrical components/Nitinol fibers & latches 4. OS updates 5. Team schedules conflicting 6. Available computers/people for testing 7. Ramp packaging space (hinge thickness) ‏ 8. Cartridge loaded and delivered in different time zones 34

BACK UP SLIDES (Appendix, extra info, etc..) 35

Appendix Appendix A – PUGH Chart Link Appendix B – ANSYS Appendix C - Microsoft Project Link 36