RFID device for refrigerator

Abstract

The disclosed RFID device for fridge comprises: a MPU (1), a LCD screen (2) to show the final inquired food information, a power management unit (3), a reader (4) to emit RF signal by its built-in antenna, a crystal oscillator (5), a keyboard (6), a reset circuit (7), a real-time clock (8), a buzzer (9), a label (10) to generate induced current when entering emission antenna working area and be activated to send information, and the system bus extension. This invention is benefit to food safety management.

Description

technical field [0001] The invention belongs to the technical field of electronic data processing, in particular to a radio frequency identification device. Background technique [0002] RFID (Radio Frequency Identification) is a non-contact automatic identification technology, which can automatically identify the target object and obtain relevant data through radio frequency signals and non-contact methods without manual intervention. As a wireless version of the barcode, the RFID system has the advantages of waterproof, antimagnetic, low temperature resistance, long service life, large reading distance, and free change of information stored on the label, which the barcode does not have. It can work in various harsh environments. Its application will greatly reduce the cost of logistics transportation and inventory management of items, and bring revolutionary changes to industries such as retail and logistics. [0003] RFID technology uses wireless...

AI Technical Summary

Problems solved by technology

[0004] With the improvement of living standards, there are more and more food in the refrigerator. People who are busy with work cannot accurately understand the food information in the refrigerator, resulting in blind purchases, food beyond the shelf life and other waste phenomena, which endanger human health and destroy the living environment.

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