Olfaction SatisfactionOlfaction Satisfaction

NSF Engineering Design Projects:NSF Engineering Design Projects:Olfaction Stimulation DeviceOlfaction Stimulation Device

Team 8:Team 8:Emily HeuerEmily HeuerChris AmblerChris AmblerPearl YeungPearl Yeung

OutlineOutline Sponsor/Client InformationSponsor/Client Information PurposePurpose Existing MarketExisting Market Prototype and FeaturesPrototype and Features SafetySafety MaintenanceMaintenance Total CostTotal Cost AcknowledgementsAcknowledgements

Sponsor/Client InformationSponsor/Client Information National Science Foundation Engineering National Science Foundation Engineering

Senior Design Projects for Persons with Senior Design Projects for Persons with DisabilitiesDisabilities

Passion WorksPassion Works– Athens, OHAthens, OH– An arts program for adults with developmental An arts program for adults with developmental

disabilitiesdisabilities Multi-sensory Stimulation RoomMulti-sensory Stimulation Room

– Varied rocking devicesVaried rocking devices– Stereo system with headphonesStereo system with headphones– Visual and tactile stimulation wall Visual and tactile stimulation wall – Bubble lamps, Christmas lights, and fiber optic Bubble lamps, Christmas lights, and fiber optic

lampslamps

Multi-Sensory Stimulation Multi-Sensory Stimulation RoomRoom

PurposePurpose

For use by adults with severe For use by adults with severe cognitive and motor cognitive and motor disabilitiesdisabilities

Stimulates olfactory senseStimulates olfactory sense Increases environment Increases environment

interactioninteractionProvides recreationProvides recreation

Existing MarketExisting Market

Commercial ProductsCommercial Products PatentsPatents NSF ProjectsNSF Projects

Multisensory Motivational Center

PrototypePrototype

Structure - BaseStructure - Base Type 1 PVCType 1 PVC Divided into two compartments: Divided into two compartments:

electrical and storageelectrical and storage User interface located on one side User interface located on one side

Structure - CasingStructure - Casing

Type 1 PVCType 1 PVC Houses fragrance Houses fragrance

dispersion systemdispersion system Two fragrance access Two fragrance access

panelspanels Front panelFront panel

– LED displays, speakers, and LED displays, speakers, and fragrance exist holesfragrance exist holes

Back PanelBack Panel– Fan ventilationFan ventilation

Fragrance SourceFragrance Source

Six Glade Aerosol Spray CansSix Glade Aerosol Spray Cans

Easily interchangeableEasily interchangeable– Removal/loading through access Removal/loading through access

panelspanels– Three holders on each access Three holders on each access

panelpanel– Holders secure cans but allow Holders secure cans but allow

slight movement for easy slight movement for easy removalremoval

Fragrance Dispersion Fragrance Dispersion SystemSystem

Release fragrance up to the Release fragrance up to the Fragrance ChamberFragrance Chamber

Two fans diffuse fragrance into the Two fans diffuse fragrance into the environmentenvironment

Compartments (6)Compartments (6)– Lever ActivatorLever Activator– SolenoidSolenoid– Aerosol CanAerosol Can

Solenoid and DriversSolenoid and Drivers

Solenoid DriversSolenoid Drivers– Each driver activates two Each driver activates two

solenoidssolenoids Linear push solenoidsLinear push solenoids

– Activate the spraying Activate the spraying mechanism on each of the mechanism on each of the aerosol spray cansaerosol spray cans

Lever SystemLever System– Plunger on solenoid Plunger on solenoid

pushes on lever to release pushes on lever to release the scentthe scent

User SwitchesUser Switches 2 user-friendly, 2 user-friendly,

interchangeable interchangeable switches switches

Selector SwitchSelector Switch– Selects desired scentSelects desired scent

Activator SwitchActivator Switch– Activates fragrance Activates fragrance

dispersion system dispersion system and additional and additional stimulus stimulus

Large Touch Pad

Squish Switch

Visual StimulationVisual Stimulation

LED IndicatorsLED Indicators– Controlled by Controlled by

selector switchselector switch– Indicates currently Indicates currently

selected fragranceselected fragrance

LED Display PatternLED Display Pattern– Controlled by activator Controlled by activator

switchswitch– Provides visual Provides visual

stimulationstimulation

Auditory StimulationAuditory Stimulation

““Ping” NoisePing” Noise– Indicates change of scent (in Indicates change of scent (in

conjunction with LED Indicators)conjunction with LED Indicators) Lion, Dinosaur, and Frog VoiceLion, Dinosaur, and Frog Voice

– Provides auditory stimulation in Provides auditory stimulation in conjunction with fragrance release conjunction with fragrance release

BatteryBattery

Rechargeable Sealed Lead Acid Rechargeable Sealed Lead Acid BatteryBattery

Lasts 2 – 3 hours per charge Lasts 2 – 3 hours per charge Device comes equipped with chargerDevice comes equipped with charger

Electrical CircuitElectrical Circuit 12 Volt Power Supply12 Volt Power Supply

– Regulated by on/off switchRegulated by on/off switch Fans (2)Fans (2)

– Responsible for diffusing scent into surrounding Responsible for diffusing scent into surrounding atmosphereatmosphere

Voltage Regulators (2)Voltage Regulators (2)– Regulates 12 volts from battery to 5 volts for the rest Regulates 12 volts from battery to 5 volts for the rest

of the circuitof the circuit MicroprocessorMicroprocessor

– 2 inputs2 inputs Selector SwitchSelector Switch Activator SwitchActivator Switch

– 24 outputs controlling:24 outputs controlling: 6 LED Indicators6 LED Indicators 18 LED Patterns18 LED Patterns 3 Drivers and 6 Solenoids3 Drivers and 6 Solenoids 4 Sound Chips and Speakers4 Sound Chips and Speakers

PCB LayoutPCB Layout

MicroprocessorMicroprocessor

PIC “brain”PIC “brain” Programmed Programmed

via Assembly via Assembly Language Language

Control LoopControl Loop Activate LoopActivate Loop Select LoopSelect Loop

MicroprocessorMicroprocessor

Program: controls I/O characteristicsProgram: controls I/O characteristics Control Loop: scan for inputControl Loop: scan for input Select Loop: Change fragrance, play Select Loop: Change fragrance, play

soundsound Activate Loop: Release fragrance, Activate Loop: Release fragrance,

play sound, display patternplay sound, display pattern

SafetySafety All access doors lockable All access doors lockable On/off switch requires a keyOn/off switch requires a key No exterior cords or wiresNo exterior cords or wires No sharp protruding objectsNo sharp protruding objects All possible locations of All possible locations of

device entry are properly device entry are properly protectedprotected

Clear PVC protective casingClear PVC protective casing Minimal supervisionMinimal supervision

MaintenanceMaintenance Fragrance loading/unloadingFragrance loading/unloading Top unscrews for easy cleaningTop unscrews for easy cleaning Battery compartment/battery easily Battery compartment/battery easily

accessible for battery rechargingaccessible for battery recharging Storage compartment for switches Storage compartment for switches

and battery charger when not in useand battery charger when not in use

Total Cost of DeviceTotal Cost of DeviceItemItem CostCost

AccessoriesAccessories $ 43.03 $ 43.03

PVCPVC $ 129.81 $ 129.81

User SwitchesUser Switches $ 118.00 $ 118.00

Glade Aerosol Spray CansGlade Aerosol Spray Cans $ 9.00 $ 9.00

LEDsLEDs $ 48.30 $ 48.30

Sound ChipsSound Chips $ 18.80 $ 18.80

Battery and ChargerBattery and Charger $ 60.98 $ 60.98

Solenoid DriversSolenoid Drivers $ 17.19 $ 17.19

PCBPCB $ 110.33 $ 110.33

Electrical ComponentsElectrical Components $ 7.23 $ 7.23

PICPIC $ 7.80 $ 7.80

SolenoidsSolenoids $ 78.12 $ 78.12

TotalTotal $ 648.59 $ 648.59

ConclusionConclusion Meets client Meets client

requirementsrequirements– Provides Provides

satisfactory satisfactory stimulationstimulation

– Easy to maintainEasy to maintain– User-friendlyUser-friendly– AffordableAffordable

Positive Positive impact on impact on quality of lifequality of life

AcknowledgementsAcknowledgements Special thanks to the following individuals Special thanks to the following individuals

who contributed to this design:who contributed to this design:– Dr. John EnderleDr. John Enderle– Chris LieblerChris Liebler– Dave KaputaDave Kaputa– Professor Monty A. Escabi, Department of Electrical Professor Monty A. Escabi, Department of Electrical

and Computer Engineeringand Computer Engineering– Professor Mei Wei, Department of Material Sciences Professor Mei Wei, Department of Material Sciences

and Engineeringand Engineering– Professor Yunsi Fei, Department of Electrical and Professor Yunsi Fei, Department of Electrical and

Computer EngineeringComputer Engineering– Dr. Robert Northrop, Department of Electrical and Dr. Robert Northrop, Department of Electrical and

Computer EngineeringComputer Engineering– Dr. Martin Fox, Department of Electrical and Computer Dr. Martin Fox, Department of Electrical and Computer

EngineeringEngineering– Richard D. Bonazza, Senior Machine Shop EngineerRichard D. Bonazza, Senior Machine Shop Engineer– Serge Doyon, Senior Machine Shop EngineerSerge Doyon, Senior Machine Shop Engineer– Maureen Gay, 8th Semester Graphic Design MajorMaureen Gay, 8th Semester Graphic Design Major

Questions?!Questions?!

12 V

On/Off Switch

FAN FAN

LM7805:VRegulator

LM7805:VRegulator

PIC16F874-04/P

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

Z600M

LED PATTERNS

SolenoidsLED

IndicatorsSound Chips

Selector

Activator

10k

10k

Sound Chip

Sound Chip

Sound Chip

Sound Chip

Indicator

Indicator

Indicator

Indicator

Indicator

Indicator

Solenoid

Solenoid

Solenoid

Solenoid Solenoid

Solenoid

Pattern

Pattern

Pattern

Pattern

Pattern

Pattern

Ground

Speaker

Ground

Speaker

PIN 4,5,7

PIN 39

5 Volts

Vcc6i

1i

4o4i5o5i6o

3o3i2o2i1o

GND

PIN 33

PIN 38

PIN 37

PIN 36

PIN 35

PIN 34

160

LED

+5v

160

LED

+5v

160

LED

+5v

160

LED

+5v

160

LED

+5v

160

LED

+5v

+5v

7405

+5 V

20mA+

1.4 V-

R = ?

0.4 V

+5 V

20mA+

2 V-

R = ?

0.4 V

Vcc6i

1i

4o4i5o5i6o

3o3i2o2i1o

GND

PIN 19

PIN 28

PIN 27

PIN 22

PIN 21

PIN 20

+5v

7405130

red+5v

130

red130

yel

130

yel

130

gre

130

gre

+5v +5v +5v +5v +5v

115

14

10

8

2

3

9

4567

111213

+Vs

Sole

noi

d

220 uF0.1 uF

Solenoid

10K 3.9 nF

0.50.5 PIN 33,34,35 PIN 36,37,38

+Vss

L295

Power On

MOVLF B‘00000111’, TRIS E

MOULFB ‘00000000’,

TRIS A

MOULF B ‘00000000’TRIS B

MOULF B ‘00000000’TRIS C

MOULF B ‘00000000’TRIS D

CONTROL LOOP

Fix Digital I/O:MOVLW B'00001110'

MOVWF ADCON1

Declare Variables:B'11111111',TEMP255B'01110110',TEMP118

B'00000101',TEMP5B'00000110',COUNT

B'00000001',SOLARRAY