The basic principle of RFID smart fridge - After customers take out the items, the smart RFID refrigerator can identify which items have been taken out, and then make settlement.

The working components of RFID smart fridge - The RFID reader reads the label. The electric lock controls the door switch of the freezer. The POS machine installed on the door of the freezer is responsible for swiping the card for settlement, and the Android industrial computer is responsible for the operation of the entire system.

The operation process of RFID smart fridge - System uses the RFID cards as the information carrier of food. When food in the refrigerator or smart shelves, the card reader which is installed in the refrigerator or shelf reads the food RFID information and stores in the database, and monitors the state of food. When food will be expired or exhausted, the system will prompt. Then users or managers can obtain real-time food information via SMS, email etc.

The specific process to achieve Unmanned shelves and refrigerators are as follows :
1.Place the electronic labels on the packaging of each goods.
2.Put the electronic tag of the goods into a cabinet equipped with a RFID reader and antenna.
3.RFID Readers read all the labels information to monitor the status of all goods in the closet.
4.When someone opens the door, the RFID reader can not read the information of a product. The system thinks the product is out of the closet.
5.Indicating that the customer has the intention to buy the product, the screen prompts the customer to confirm whether to buy.
6.If you confirm the purchase and enter the payment process, pay successfully and complete the purchase. If the customer does not buy it, it will be ready to put out the goods back to the closet.