A simpler way to shop!
The system is made up of three different modules:
• Product
• Two different types of identification
• Passive RF ID
• Bar Code
• Shopping Cart
• Computing system for product identification and real time price
update
• LCD, displaying product description and total price
• RF link to communicate with checkout counter
• Checkout Counter
• RF link to communicate with shopping cart
• Product Database
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
• Facilitate people’s shopping
• Real time price update
• Audible (multilanguage) description (price, product name, etc.)
• Eliminate long/tedious lines
• Uploading final price to checkout counter, so that customer only
needs to pay (no need to scan everything)
• Possible extension
• Advertisement opportunities
• Multilanguage Display
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
Product
Bar codes
Or
RF ID’s
Shopping Cart
Checkout Counter
Micro controller
Bar code scanner
LCD
RF interface
Keypad
Speaker
Power supply
Micro Controller
RF interface
LCD
Signal Cancellation
Power supply
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
•Bar code will be the product Id, to identify product information
(Price, sale information, manufacturer and name of product).
•RF ID, will be used in the same idea but wireless, so that the
consumer does not need to scan the item, simply put it in the cart.
•RF ID will be a passive component, so is safer, cheaper and
less power consumption.
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
•Micro Controller: Will be using an HC11/12 to handle all the
processes of actualize the price on the LCD, data transmit to cash
register, speaker control and user interface.
•Barcode Scanner
•LCD: Display product information, total price with tax included,
advertisements and sales information.
•RF interface: Transmitter and Transceiver
•Transmitter: Will be used to send the information to the cash
register.
•Transceiver : Send a signal to the RF ID, and receive the
product id.
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
•Keypad: Clear product, in case needed, input card information,
to activate audio.
•Speaker: To output product information and price as audio for
those who need it. It will have audio output in English, Spanish
French and German
•Power Supply:
•Battery (12 volts, rechargeable)
•Generator on the wheels
•Recharge interface
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
•Micro Controller: To interface with the RF and display the Price
•LCD: Display the total amount to pay
•RF interface: To receive the information from the cart
•Signal cancellation: Send a signal to each item that has been
purchased so that it does not trigger the alarm system
•Power Supply: Standard AC supply
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
•Michael Brogdon: Firmware and Software Development
•Enrique Conde: Firmware and Software Development
•Chad Gill: Hardware layout and design
•Douglas Schuyler: Hardware layout and design, cart design
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
•CDR
• Have every part we need ordered or received
• Startup Code for Microcontrollers
• Product ID with Bar code complete
• LCD test code
• Keypad test code
• Bar code test code
• Audio test code
• Initial design of PCB completed and start manufacturing
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
• Milestone I
• Shopping cart (itself) complete
• Revision of PCB design
• Product RF ID complete
• Partial Integration
• Communication links up and running
• Hardware Drivers ready
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
• Milestone II
• Final PCBs complete with parts installed
• Shopping Cart complete with wiring and power supply
• Checkout complete
• Final testing and debug begins
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
• RF ID tags
• Availability
• Range and Power
• Bar code scanner is the backup
• PCBs
• Design of board
• Bugs in layout/connections
• Time to manufacture
• Debug
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6
• Shopping Cart
• Generate enough power to recharge battery
• Resistance (on wheels for customers)
• Safety
• Try to design better
• Wireless Interfaces
• Chance of link failing
• Replacement parts
Tuesday, January 31st
2oo6
Capstone, Spring 2oo6