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Team Foreigner (Group Team Foreigner (Group 11)11)
“Cold as Ice” Smart “Cold as Ice” Smart RefrigeratorRefrigerator
Midterm Design ReviewMidterm Design Review
Foreigner Team MembersForeigner Team Members
Drew Whipple – Team LeaderDrew Whipple – Team Leader Brandon AdeBrandon Ade Matt ComptonMatt Compton Jeff KillenJeff Killen
Project OverviewProject Overview
Cold as Ice Smart RefrigeratorCold as Ice Smart Refrigerator Feature Set:Feature Set:
– Utilizes a pre-manufactured miniature Utilizes a pre-manufactured miniature refrigeratorrefrigerator
– Capable of maintaining a running food Capable of maintaining a running food inventory through use of RFIDinventory through use of RFID
– Capable of displaying messages (food Capable of displaying messages (food expirations, temperature, errors)expirations, temperature, errors)
– User can digitally control the User can digitally control the temperaturetemperature
Project OverviewProject Overview
Feature Set (cont):Feature Set (cont):– Recipe databaseRecipe database– Ethernet connectivityEthernet connectivity
Allows for remote access to refrigerator Allows for remote access to refrigerator information (temperature, food inventory)information (temperature, food inventory)
Allows for remote entry/querying of recipe Allows for remote entry/querying of recipe databasedatabase
Success CriteriaSuccess Criteria
Ability to sense and decode RFID tags Ability to sense and decode RFID tags affixed to ‘food’ items.affixed to ‘food’ items.
Ability to update/maintain a ‘food Ability to update/maintain a ‘food inventory.’inventory.’
Ability to control cabinet temperature via Ability to control cabinet temperature via keypad and web.keypad and web.
Ability to query ‘food inventory’ via web.Ability to query ‘food inventory’ via web. Ability to display status information on an Ability to display status information on an
LCD display (e.g., current temp, requested LCD display (e.g., current temp, requested temp, messages).temp, messages).
Block DiagramBlock Diagram
9V DC wall-wart
Texas Instruments Housed S6350 Midrange RFID Reader
RabbitCore RCM2200 C-Programmable Module with Ethernet
12V DC wall-wart
National Semiconductor LM2676S – 5.0 3A step-down voltage regulator
Maxim +/- 15kV ESD-Protected, Signle/Dual/Octal, CMOS Switch Debouncers Storm
3K0421 4-button keypad
Microchip TC72 Digital Temperature Sensor with SPI Interface
Potter & Brumfield T77S1D10-05 Sealed Power Relay
Crystalfontz America, Inc. Mod. CFAH2004A-NYA-JP 4x20 LCD
Compressor
Ethernet Port
120V AC wall outlet
DB
9 C
on
necto
r
9
2
~
5
4
8
Reset Switch
4
2
2
Component Selection Component Selection RationaleRationale
MicrocontrollerMicrocontroller– I/O PinsI/O Pins
23 Pins Needed23 Pins Needed
– Ethernet InterfaceEthernet Interface– SimplicitySimplicity– ChoicesChoices
PICPIC RabbitRabbit
RCM 2200 Microcontroller
Component Selection Component Selection RationaleRationale
LCD DisplayLCD Display– Text OnlyText Only– Character SpaceCharacter Space– Wide Temperature Wide Temperature
RangeRange– Crystal FontzCrystal Fontz
20x420x4 20x220x2
Crystal Fontz Standard Parallel 20x4 LCD
Component Selection Component Selection RationaleRationale
KeypadKeypad– Number of KeysNumber of Keys
12 (Grayhill) vs. 412 (Grayhill) vs. 4
– Decoding MatrixDecoding Matrix– FunctionalityFunctionality
Legend (C & K)Legend (C & K)
– Adhesive vs. Panel Adhesive vs. Panel MountingMounting
Storm 3000 Series Four-Button Arrow Keypad
Component Selection Component Selection RationaleRationale
RFID KitRFID Kit– RangeRange
ContinuousContinuous AlternativesAlternatives
– CostCost
Texas Instruments Series 6000 HF RFID Evaluation Kit
PackagingPackaging
Will utilize a pre-packaged Diplomat Will utilize a pre-packaged Diplomat miniature refrigerator (white finish)miniature refrigerator (white finish)
Packaging divided into two sections:Packaging divided into two sections:– External Packaging: LCD display, External Packaging: LCD display,
keypad, and micro-controller housed in keypad, and micro-controller housed in plastic enclosureplastic enclosure
– Internal Packaging: RFID scanner and Internal Packaging: RFID scanner and temperature sensor reside within temperature sensor reside within refrigeratorrefrigerator
Packaging - ExternalPackaging - External
Micro-controller to Micro-controller to be placed in be placed in plastic enclosureplastic enclosure
Keypad/LCD Keypad/LCD display embedded display embedded in plastic in plastic enclosureenclosure
Plastic enclosure Plastic enclosure placed on front placed on front door of door of refrigeratorrefrigerator
LCD Display
17.5 in
18 in
19.25 in
10 in
8 in Plastic
Enclosure
4-Arrow Keypad
RJ-45 Connector
Mini-Refrigerator Front Door
Packaging - InternalPackaging - Internal
RFID receiver RFID receiver placed in bottom placed in bottom (or inside front (or inside front door) of door) of refrigeratorrefrigerator
Temperature IC Temperature IC placed on inside placed on inside of front doorof front door
RFID receiver located in bottom (or possibly on side) of refrigerator
Temperature sensor IC
Packaging – Materials ListPackaging – Materials List
Packaging Materials:Packaging Materials:– Diplomat miniature refrigeratorDiplomat miniature refrigerator– 20x4 LCD display20x4 LCD display– 4-arrow keypad4-arrow keypad– Plastic enclosure boxPlastic enclosure box– Internal components (temperature IC, Internal components (temperature IC,
RFID scanner, micro-controller)RFID scanner, micro-controller)
Packaging – Cost/Weight Packaging – Cost/Weight EstimatesEstimates
Material Weight (lbs) Cost ($) Mini-Refrigerator 55 110.00 Plastic Enclosure 0.5 6.00
20x4 LCD Display 0.5 17.61 4-Arrow Keypad 0.5 19.75
Rabbit 2200 Microcontroller 0.5 55.00 RFID Receiver 1 645.00
Temperature Sensor IC Negligible 0.94 Total 58.00 854.30
Temperature Sensor Temperature Sensor InterfaceInterface
Ethernet InterfaceEthernet Interface
RFID InterfaceRFID Interface
RCM 2200 HeadersRCM 2200 Headers
LCD InterfaceLCD Interface
3A Step-Down Voltage 3A Step-Down Voltage RegulatorRegulator
4 Button Keypad Interface4 Button Keypad Interface
Compressor InterfaceCompressor Interface
ConclusionConclusion
Thanks for your time and Thanks for your time and input!input!
Questions or Comments?Questions or Comments?