Point of Sale Grocery Cart
ECE 480 Desgin Team 6
Let's Get It Started
How does the Grocery Cart work?
Process Overview
1. Take fully charged cart from queue
2. Customer scans UPC code on cart to identify what store they are in
3. Items scanned by phone as they are purchased
4. Load-cells detect weight
5. Microcontroller converts load-cell signal to weight
6. Wirelessly talks with server to confirm weight of item
7. Server tells phone price of the item
8. App keeps track of cart items and is alerted if items are removed
9. Checkout through application
10. Return cart to charging queue
2. Customer scans UPC code on cart to identify what store they are in
3. Items scanned by phone as they are purchased
4. Load-cells detect weight
5. Microcontroller converts load-cell signal to weight
6. Wirelessly talks with server to confirm weight of item
7. Server tells phone price of the item
8. App keeps track of cart items and is alerted if items are removed
9. Checkout through application
10. Return cart to charging queue
FAST DIAGRAM
Introduction
The major issue with todays system is the unnecessary stop at the checkout line. Cashiers are paid to take the items out of the cart, scan, and put them right back into the cart. A lot of the shoppers time being wasted, adds to congestion near the stores exit, and adds cost for the store which has to pay cashiers. Our goal is to create a grocery cart checkout system
Gantt Chart
This is our Load Cell for video demonstration
Conceptual Designs - Battery
Design 1
Load-Cell
Amplification
Arduino Uno (microcontroller)
Wifi Shield
Server
Phone Application
Design 2
Load-Cell
Amplification
CC3200 (microcontroller )
Built in wifi
Server
Phone Application
Load-Cell
Amplification
Arduino Uno (microcontroller)
Wifi Shield
Server
Phone Application
Design 2
Load-Cell
Amplification
CC3200 (microcontroller )
Built in wifi
Server
Phone Application
Conceptual Designs - Battery
Design 1
Wireless charging mat under carts
The charging receiver will be positioned
on the bottom of the cart
Design 2
Wireless charging mat on side wall
The charging receiver will be positioned
on the side of the cart
Wireless charging mat under carts
The charging receiver will be positioned
on the bottom of the cart
Design 2
Wireless charging mat on side wall
The charging receiver will be positioned
on the side of the cart
FOLLOW
-Design 1
Two load-cells
Metal plates to distribute weight
-Design 2
Four load-cells
Placed at the corners
Team Member, Sponsor, and Facilitator
Steven Hartz
Matt Rasmussen
Ben Lauzon
Shuangfei Liu
Husain Aleid
Taoping Zhu
Matt Rasmussen
Ben Lauzon
Shuangfei Liu
Husain Aleid
Taoping Zhu
Sponsor: Dr. Satish Udpa
Facilitator: Dr. Jian Ren
Documents