The Drone unit and the Dropping Mechanism unit have been developed and the system is successfully coordinated. Initially the drone without payload as shown in Fig.3has been tested successfully.
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Fig. 2 Flowchart of the system Fig. 3 Scanned details displayed on the LCD
Smart Trolley with Automatic Master Follower and Billing System 167 The client enters the shopping complex and he/she picks the smart trolley. Each smart trolley has ultrasonic sensors and Bluetooth placed in it so the smart trolley follows that individual client. Every product within the shopping mall is hooked up with the RFID tags and every RFID tags have distinctive number that is employed to unambiguously establish the merchandise. Once the merchandise placed upon the RFID reader the tag gets known by the reader once it comes inside the antenna vary and so the product-ID beside the end date and value is shipped via server. Google Firebase is employed to form and maintain the information at the server finish.
At the server finish, the information is compared with the RFID ID range that is placed on the smart trolley and therefore the details of those things like Tag ID, price, and expiry date and discount percentage are compared. If it matches then the information gets displayed on the liquid crystal display screen. The information communicated is saved for a flash within the small controlled memory. The client is able to choose the things with the assistance of the information displayed on the screen.
If the client would really like to get rid of any item then he/she must scan the merchandise once more that removes the actual item. The actual item and its price are aloof from the whole bill quantity. The ultimate quantity displays on the liquid crystal display.
After finishing the shopping, the client must press the “upload” button. Once the button is ironed, the whole bill quantity of all things gets generated. The client must select the payment technique and so created invoice is transferred to payment web site and so the payment is finished.
Once the payment is finished, the knowledge is transferred to the exit gate. Thus the client has completed the shopping while not standing in long queues. When the system is initialized the first message displayed is “SHOPPING CHART” as its initialization message. When the RFID tags of the products are read by the reader, the details of the product gets displayed and the amount of each product gets added to the total bill as shown in Fig.3.
The Firebase Database is used for assigning and storing the value of the products.
Google Firebase is used to create and maintain the database at the server end as depicted from Fig.4.
With the help of ultrasonic sensors, the calculation of the distance between the trolley and the Customer is done and the calculated value gets displayed on the LCD screen.
The Ultrasonic sensor situated on the trolley handles establishes the connection between client and trolley with the help of Bluetooth module. Further with the help of ultrasonic sensors, the distance between the trolley and the Customer is calculated and value gets displayed on the LCD screen as shown in Fig.5. The trolley follows the customers when the Bluetooth gets connected to that particular person and the trolley follows that client till the end of the shopping with the aid of ultrasonic sensor as shown in Fig.5. In Fig.6, the calculated distance value is displayed on LCD.
The mobile application shown in Fig.7has been developed can be used by both the shopkeeper and the Customer. Using this app, the seller can update the details of any products whereas the customer can use this app to make the payments.
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Fig. 4 Database created for the products
Fig. 5 Trolley following the customer Fig. 6 The calculated
distance value displayed on LCD
Smart Trolley with Automatic Master Follower and Billing System 169 Fig. 7 The Login page of
the mobile app
The trolley follows the customers when the Bluetooth gets connected to that particular person and the trolley follows that client till the end of the shopping. As shown in Fig.5. The mobile application shown in Fig.7has been developed can be used by both the shopkeeper and the Customer. Using this app, the seller can update the details of any products whereas the customer can use this app to make the payments.
Once the purchase of items is completed, then the bill can be paid using the mobile app developed. The Bill summary is displayed in the app as shown in Fig.8.
The items being purchased is logged along with details such as Product name, Quantity and Total cost as shown in Fig.8.
6 Conclusion
The objective is effectively attained in the prototype model developed. The developed product is of low cost, amiable to use and does not require any specific practice.
The ability to take a decision can be done in the cart itself which can be used in the shopping complexes for effortless and clever way of purchasing items to save vitality, time and money of the customers. The project is evaluated with different trial cases with distinct items assessed for all the practical trials. The system ought to
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Fig. 8 The bill payment page of the mobile app
be generated that scale back the time of the customers in looking out the placement of the product. The client simply sorts the name of the item; the trolley ought to mechanically guide them to the location of the item. The system ought to be hooked up with buzzer; if the load of trolley exceeds certain weight unit then it will facilitate the older customers. Additional economical and long vary RFID readers are often used. Thefts are often avoided by use of robotic ARM for choosing the items. Since, it’s a prototype it has limited load carrying capacity around 3 kg.
References
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