Olfaction Satisfaction NSF Engineering Design Projects: Olfaction Stimulation Device Team 8: Emily Heuer Chris Ambler Pearl Yeung

Outline Sponsor/Client Information Sponsor/Client Information Purpose Purpose Existing Market Existing Market Prototype and Features Prototype and Features Safety Safety Maintenance Maintenance Total Cost Total Cost Acknowledgements Acknowledgements

Sponsor/Client Information National Science Foundation Engineering Senior Design Projects for Persons with Disabilities National Science Foundation Engineering Senior Design Projects for Persons with Disabilities Passion Works Passion Works –Athens, OH –An arts program for adults with developmental disabilities Multi-sensory Stimulation Room Multi-sensory Stimulation Room –Varied rocking devices –Stereo system with headphones –Visual and tactile stimulation wall –Bubble lamps, Christmas lights, and fiber optic lamps

Multi-Sensory Stimulation Room

Purpose For use by adults with severe cognitive and motor disabilities For use by adults with severe cognitive and motor disabilities Stimulates olfactory sense Stimulates olfactory sense Increases environment interaction Increases environment interaction Provides recreation Provides recreation

Existing Market Commercial Products Commercial Products Patents Patents NSF Projects NSF Projects Multisensory Motivational Center

Prototype

Structure - Base Type 1 PVC Type 1 PVC Divided into two compartments: electrical and storage Divided into two compartments: electrical and storage User interface located on one side User interface located on one side

Structure - Casing Type 1 PVC Type 1 PVC Houses fragrance dispersion system Houses fragrance dispersion system Two fragrance access panels Two fragrance access panels Front panel Front panel –LED displays, speakers, and fragrance exist holes Back Panel Back Panel –Fan ventilation

Fragrance Source Six Glade Aerosol Spray Cans Six Glade Aerosol Spray Cans Easily interchangeable Easily interchangeable –Removal/loading through access panels –Three holders on each access panel –Holders secure cans but allow slight movement for easy removal

Fragrance Dispersion System Release fragrance up to the Fragrance Chamber Release fragrance up to the Fragrance Chamber Two fans diffuse fragrance into the environment Two fans diffuse fragrance into the environment Compartments (6) Compartments (6) –Lever Activator –Solenoid –Aerosol Can

Solenoid and Drivers Solenoid Drivers Solenoid Drivers –Each driver activates two solenoids Linear push solenoids Linear push solenoids – Activate the spraying mechanism on each of the aerosol spray cans Lever System Lever System –Plunger on solenoid pushes on lever to release the scent

User Switches 2 user-friendly, interchangeable switches 2 user-friendly, interchangeable switches Selector Switch Selector Switch –Selects desired scent Activator Switch Activator Switch –Activates fragrance dispersion system and additional stimulus Large Touch Pad Squish Switch

Visual Stimulation LED Indicators LED Indicators –Controlled by selector switch –Indicates currently selected fragrance LED Display Pattern LED Display Pattern –Controlled by activator switch –Provides visual stimulation

Auditory Stimulation “Ping” Noise “Ping” Noise –Indicates change of scent (in conjunction with LED Indicators) Lion, Dinosaur, and Frog Voice Lion, Dinosaur, and Frog Voice –Provides auditory stimulation in conjunction with fragrance release

Battery Rechargeable Sealed Lead Acid Battery Rechargeable Sealed Lead Acid Battery Lasts 2 – 3 hours per charge Lasts 2 – 3 hours per charge Device comes equipped with charger Device comes equipped with charger

Electrical Circuit 12 Volt Power Supply 12 Volt Power Supply –Regulated by on/off switch Fans (2) Fans (2) –Responsible for diffusing scent into surrounding atmosphere Voltage Regulators (2) Voltage Regulators (2) –Regulates 12 volts from battery to 5 volts for the rest of the circuit Microprocessor Microprocessor –2 inputs  Selector Switch  Activator Switch –24 outputs controlling:  6 LED Indicators  18 LED Patterns  3 Drivers and 6 Solenoids  4 Sound Chips and Speakers

PCB Layout

Microprocessor PIC “brain” PIC “brain” Programmed via Assembly Language Programmed via Assembly Language Control Loop Control Loop Activate Loop Activate Loop Select Loop Select Loop

Microprocessor Program: controls I/O characteristics Program: controls I/O characteristics Control Loop: scan for input Control Loop: scan for input Select Loop: Change fragrance, play sound Select Loop: Change fragrance, play sound Activate Loop: Release fragrance, play sound, display pattern Activate Loop: Release fragrance, play sound, display pattern

Safety All access doors lockable All access doors lockable On/off switch requires a key On/off switch requires a key No exterior cords or wires No exterior cords or wires No sharp protruding objects No sharp protruding objects All possible locations of device entry are properly protected All possible locations of device entry are properly protected Clear PVC protective casing Clear PVC protective casing Minimal supervision Minimal supervision

Maintenance Fragrance loading/unloading Fragrance loading/unloading Top unscrews for easy cleaning Top unscrews for easy cleaning Battery compartment/battery easily accessible for battery recharging Battery compartment/battery easily accessible for battery recharging Storage compartment for switches and battery charger when not in use Storage compartment for switches and battery charger when not in use

Total Cost of Device ItemCost Accessories $ $ PVC $ $ User Switches $ $ Glade Aerosol Spray Cans $ 9.00 $ 9.00 LEDs $ $ Sound Chips $ $ Battery and Charger $ $ Solenoid Drivers $ $ PCB $ $ Electrical Components $ 7.23 $ 7.23 PIC $ 7.80 $ 7.80 Solenoids $ $ Total $ $

Conclusion Meets client requirements Meets client requirements –Provides satisfactory stimulation –Easy to maintain –User-friendly –Affordable Positive impact on quality of life Positive impact on quality of life

Acknowledgements Special thanks to the following individuals who contributed to this design: Special thanks to the following individuals who contributed to this design: –Dr. John Enderle –Chris Liebler –Dave Kaputa –Professor Monty A. Escabi, Department of Electrical and Computer Engineering –Professor Mei Wei, Department of Material Sciences and Engineering –Professor Yunsi Fei, Department of Electrical and Computer Engineering –Dr. Robert Northrop, Department of Electrical and Computer Engineering –Dr. Martin Fox, Department of Electrical and Computer Engineering –Richard D. Bonazza, Senior Machine Shop Engineer –Serge Doyon, Senior Machine Shop Engineer –Maureen Gay, 8th Semester Graphic Design Major

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