This is Smart Shopping Trolley Project, it follows your steps. It consists of RFID reader, IR Sensor Pairs, Proximity Sensor ( Detector) and Motor Driver IC.
RFID reader is used to scan the Products.
IR sensor Pair used to follow the black line your steps.
Proximity sensor used to stop the trolley.
8051 based microcontroller is used to deign this project.
The Smart Shopping system comes with the smart trolley which is an embedded device with RFID reader for scanning the RFID tag of products, an LCD display for displaying the bill, a data modem module for manipulation and sending data to the billing unit using wireless communication. Thermal printer attached with billing unit to print the invoice.
A centralized system would be there for any help and queries and for the billing transaction of the products by the customers. Even the exit gates of the mall will be laced up with the RFID readers for detecting any theft. There is less user interface. Project have featured a cart equipped with an RFID reader, a data transceiver and an LCD display. This smart shopping cart keeps an account of the bill made by keeping running total of their purchases. LCD screen will show the total bill of the items present in the cart.
Problem Definition
The current system involves a large amount of manual handling on the part of the customer. It helps in tracking and identification of trolleys, which is useful for the management of the shop but does nothing for the customer. It does not provide a feasible solution to reduce the time spent by the customer in the store, mainly while standing in line for billing and payment.
RADIO FREQUENCY IDENTIFICATION
RFID is a dedicated short range communication technology. The term RFID is used to describe various technologies that use radio waves to automatically identify people or objects. RFID technology is similar to the bar code identification systems. It consists of reader and tag. RFID tags support a larger set of unique IDs than bar codes
An RFID system consists of transceiver, which read the radio frequency and transfer the information to a processing device (reader) and a transponder, or RF tag, which contains the RF circuitry and information to be transmitted.
When an RFID tag passes through the field of the scanning antenna, it detects the activation signal from the antenna. That "wakes up" the RFID chip, and it transmits the information on its microchip to be picked up by the scanning antenna.
In addition, the RFID tag may be of one of two types. Active RFID tags have their own power source; the advantage of these tags is that the reader can be much farther away and still get the signal. Even though some of these devices are built to have up to a 10 year life span, they have limited life spans. Passive RFID tags, however, do not require batteries, and can be much smaller and have a virtually unlimited life span.
RFID tags can be read in a wide variety of circumstances, where barcodes or other optically read technologies are useless.
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