If you want to talk about the short-range Internet of Things network technology, it is estimated that everyone is most familiar with Bluetooth. But in fact, in addition to Bluetooth, RFID radio frequency identification technology has already penetrated into our daily life, and even is used every day, such as our second-generation ID cards that are inseparable.
RFID (Radio Frequency Identification) is a wireless communication technology that can automatically identify target objects and obtain related data through radio frequency signals. It is one of the commonly used short-range wireless communication technologies in the Internet of Things.
RFID electronic tags have a complete set of modulators, encoders, memories, controllers and antennas. Depending on the application requirements, a built-in battery can be selected for use. Compared with ordinary bar codes, RFID technology has the advantages of waterproof, anti-magnetic, high temperature resistance, long service life, long reading distance, tag data can be encrypted, and larger storage capacity that ordinary bar codes do not have. The electronic tag can cooperate with the reader to realize the reading, writing and storage of information through the mounted antenna.
Let's take a look at the current applications of RFID technology in the Internet of Things:
Warehousing logistics tracking
For domestic companies, Haier Group has established a fully automated logistics center to optimize supply chain management. By embedding RFID radio frequency identification tags on the box and pallet, when the goods enter or leave the warehouse or storage, a microwave query signal is sent to the RFID electronic tag through the antenna through a fixed or handheld RFID reader, and the electronic tag answers and returns after receiving the query signal Tag data information. After the data is read, the data will be synchronized to the warehouse management platform in real time to improve the overall work efficiency.
Taking Wal-Mart as an example abroad, the RFID plan for pallets and boxes has been implemented, and the effect is remarkable. After the application of RFID technology in its stores, the replenishment speed of goods with electronic tags is three times faster than the application of barcode technology, and the collaborative automated ordering system effectively reduces the inventory.
Medical item tracking
Taking medical waste traceability management as an example, Wanda Information has proposed a solution for the supervision and management of medical waste, and designed a "medical waste disposal supervision and traceability system" in conjunction with the medical waste treatment process. After the hospital completes the weighing of the medical waste recycling bin, the information is written into the RFID electronic tag of the recycling bin and uploaded to the cloud to synchronize the data with the Environmental Protection Agency and the incineration center. After the medical waste recycling box is delivered to the incineration center, it is weighed again for confirmation.
The entire process, using RFID technology, can effectively prevent the loss, leakage and accidents of medical waste, and has been promoted in many medical and health institutions in Shanghai, and achieved good results.
Air baggage check
Domestic Eastern Airlines has already implemented large-scale baggage tracking through RFID technology. When passengers check their luggage, the airport staff will write the flight number, departure port, arrival port, landing time, luggage tag number and other information into the RFID tag embedded in the luggage tag. When the luggage tag with RFID tag is sorted When loading, installing, arriving, extracting and other nodes, these baggage data information will be automatically collected to the background database. For passengers, you can easily check your luggage information through the WeChat applet on your mobile phone.
Vehicle toll collection
At present, ETC (Electronic Toll Collection) electronic toll collection system has been fully implemented in China to ensure the smooth operation of the entire road network. The short-range communication of ETC lanes is realized through the vehicle-mounted RFID tags installed on the vehicle windshield and the RFID readers on the ETC lanes of the toll station. Through RFID technology, the railing will be automatically released when the vehicle passes through the highway or bridge toll station. ETC vehicles do not need to pay for parking, and the fee is directly processed through the bank background settlement.
Intelligent parking recognition
For fixed parking applications such as office buildings or residential areas, RFID technology can be used. Through RFID technology, the RFID parking card carried on the vehicle works in conjunction with the RFID identifier to allow the vehicle to be directly released, effectively improving the problem of low traffic efficiency caused by card entry and exit in traditional parking lots.
Cards, product labels
The second-generation ID card in China adopts the built-in rfid technology, which is composed of multiple-layer polyester materials to form a single-page card certificate. The second-generation ID card contains an rfid chip, which has a fast reading and writing speed, and the chip uses a specific logic encryption algorithm, which can achieve high-performance anti-counterfeiting and is not easy to forge, which is convenient for various certification departments to use computers for verification.
Similarly, RFID tags can also be used for commodity labels to facilitate the anti-counterfeiting of goods. For example, alcohol products, alcohol traceability systems based on RFID technology can achieve integrated monitoring and recording information from raw materials, assembly, storage inventory, shipment, to retailers, thus Eliminate fake wine, effectively protect the interests of consumers and liquor companies.
In addition to the application scenarios mentioned above, RFID technology can also be used in military armament tracking, port cargo tracking and other scenarios. The era of Internet of Everything brings new challenges and opportunities to various industries. RFID radio frequency identification technology allows each item to have its own "ID card ID", which can be widely used in item identification and tracking In the scene. With the development of technology, the price of RFID tag products will become lower and lower. I believe that in the near future, RFID technology will be applied in more industry scenarios.