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This paper studies a combination system called WLAN+RFID (hereinafter referred to as a combined system) consisting of WLAN and RFID. It is based on wireless local area network and radio frequency identification technology. It utilizes the wireless transmission of WLAN and the non-contact automatic identification of RFID to provide users with faster and more flexible identification services.
In the outdoor open-air large cargo yards at port terminals, stations or logistics centers, due to the large number of sites and the variety of materials, traditional manual operations consume a lot of manpower and time, and are prone to errors. When the staff inspect, store, register, select, locate and transport the goods, they and the position of the forklift need to be moved. Install multiple APs on the roof of the yard building or at the relevant location so that the WLAN's wireless signal covers the entire yard. The Android RFID handheld reader can be roamed within the coverage area and connected to the inventory system of the yard via WLAN, thereby solving the operator's mobility problems.
At the time of receipt, the staff carried the handheld terminal close to the cargo. Within the reading range, the tag data can be displayed on the LCD screen of the handset and entered the central database via WLAN. Staff can also enter other relevant data on the handheld's small keyboard, which also enters the central database via WLAN. Next, the system feeds back the location and related data of the goods back to the handset and displays them on the screen.
 

RFID technology can effectively solve the increasingly rampant product anti-counterfeiting phenomenon. In RFID anti-counterfeiting applications, clothing is commonly used for anti-counterfeiting. Apparel manufacturers put their own unique RFID tags and clothing in a carton, each with its own unique ID code.
Apparel manufacturers put their own multiple RFID read and write tags in the carton at the same time, each carton has its own unique ID code. When the production is completed to the delivery process, each carton passes through an RFID tag reader, and all carton information is read and transmitted to the computer.
The manufacturer can also write corresponding information to other data blocks of the tag through the handheld RFID reader during the QA check and other stages. In this way, the entire transportation process from the production to the distribution center to the retail can be recorded.
One of the main advantages of RFID technology for manufacturers is that they can be integrated directly into existing products, machines or equipment without major changes to current production equipment. The RFID tag itself has read and write capabilities, can be written to the manufacturer's unique encrypted code, and easily integrated into a variety of goods.
 

At present, radio frequency identification is most widely used in high frequency and ultra high frequency. However, radio frequency in the UHF band is sensitive to the environment, especially metal, which makes the passive tag of this working frequency unable to work on objects with metal surfaces, and the most widely used logistics industry for radio frequency identification is metal environment. Therefore, the shortcoming of metal sensitivity greatly limits its application in the logistics industry.
When RFID systems are used in metal environments, the impact of metals on UHF RFID readers is mainly reflected in two aspects: reflectivity and shielding. A metal plate is placed directly in front of the reader antenna. The distance between the metal plate and the fixed RFID reader at 2.5 m. The reader works in the UHF band and conforms to the ISO18000--6 standard.
When the metal is close to the reader antenna, due to electromagnetic induction, the RF energy is absorbed into its own electric field energy, thus reducing the total energy of the original RF field strength, and also generating an induced magnetic field, which is perpendicular to the metal surface. The distribution of the RF field strength is deformed on the metal surface, and the magnetic curve tends to be gentle. Therefore, when the label is attached to the metal surface or very close to the metal surface, there is actually no RF field strength distribution in the space, and the tag antenna cannot cut the magnetic field line to obtain the electromagnetic field energy, and the label cannot work normally.
 

Many vendors label their labels before shipping in order to comply with the new RFID regulations, but Wells' approach is different. It used RFID systems early in the manufacturing process, saving costs and achieving other advantages. Bras Galles, Wells’ process control manager, began a pilot project with dairy company automation supplier Rockwell AutomaTIon in mid-2004.
The RFID antenna reader is written on the RFID tag, which is attached to the outer package of the two-barrel product and can be attached to 30 outer boxes per minute. When the quick freezing is performed, the label on the outer box is read again, and the speed is up to four times that of the previous one, and finally the product is shipped. The RFID system passes the information back to the Wells' control system to enable information sharing in the company's corporate network. Galles explained that if the system is shipped with the usual label and then shipped, Wells’ must introduce manual repackaging, which increases labor costs.
The dairy company and Rockwell achieved efficiency gains through RFID systems, leveraging the data processing capabilities of the tags. For example, each RFID product of a dairy company is connected to a database with production parameters for the ice cream in the package, including production time, batch identification information, and product lines. This allows the Wells’ operator to accurately understand when each label is pasted and which batch of shipments belong to the batch.
 

Given the current trend in oil prices and the co-promotion of carbon neutrality, organizations are under increasing pressure to adopt different technology solutions to improve the efficiency of mobile device management.
An important area for using technology solutions to reduce fuel consumption and carbon dioxide emissions is mobile device management. More advanced mobile device management solutions include GPS navigation, wireless communication technology and Internet access, as well as telemetry sensors (wireless or wired), vehicle RFID readers and communication devices. The information gathered using these technologies facilitates online interaction with fleets, workflow automation, and real-time cost analysis of critical business decisions.
The passive RFID reader tracks the driver's location and activity data by identifying the ID and obtains information about the goods via RFID tags on the tray or item. The data is first transmitted to an onboard computer and then transmitted to the data center of the monitoring system via mobile communication technology.
With the RFID mobile scanner management system, drivers and operators can get the latest information and standards in fuel-saving and emission-reducing technologies (for example, keeping tires inflated, speed-limiting driving, limiting vehicle overweight, etc.). Many RFID mobile device management systems are currently able to customize the driver scoring system, taking into account many of the criteria listed above.

In recent years, the national policy has clearly proposed the application of high-tech such as smart parking systems and automatic identification of license plates. To put it simply, the "wisdom" of smart parking is reflected in: smart looking for parking spaces + automatic parking fees.
So, how do you implement smart parking now? Let's take the most common parking lot. The most important technologies are license plate recognition technology and non-stop electronic toll collection (ETC) technology.
Before the vehicle with the electronic license plate enters the parking lot, the RFID parking system can accurately identify the vehicle identity through the electronic license plate recognition device, record the entry and exit time of the vehicle to accurately charge, and make the vehicle pass quickly without manual parking. When the vehicle stops driving out of the parking lot, the passive RFID tag reader will perform short-range communication with the electronic license plate through the license plate identification antenna, and automatically complete the charging process without any driver parking and other charging personnel taking any action.
 

The anti-counterfeiting system and method of alcohol based on RFID technology, using large-scale integrated circuit manufacturing, has the characteristics of high processing difficulty, low cost, and can be certified by enterprises for commodity information, which will bring revolutionary breakthrough to alcohol anti-counterfeiting technology.
This solution applies RFID technology to wine and other containers with caps, and anti-counterfeiting of goods through bottle structure design and background certification system. The system consists of specially designed caps and bottles, RFID UHF readers, communication networks and anti-counterfeiting database servers. When the bottle is opened, the sharp face of the cutting device at the mouth of the bottle will cut off the connection between the antenna and the chip, so that the RFID scanner cannot read the code of the chip on the top of the bottle cap, thereby preventing the secondary use of the bottle.
This anti-counterfeiting method uses RFID technology, and hardware uses large-scale production of integrated circuit chips and tag antennas. It is easy for manufacturers to manufacture, and counterfeiters need to spend a lot of money to copy these technologies.
 

With the rapid growth of corporate brands and the rapidly changing market, the original factory packaging and logistics links are clearly unable to keep up with the pace of enterprise development.
Comparing the current multi-packing schemes, in order to meet the above-mentioned packing requirements, the best is the picking and packing system solution using UHF RFID solution. In addition to RFID tags, bar codes are one of the most used identification technologies. The advantage of bar code technology is that the price is relatively cheap, but it does not have the ability to be recognized by long distance and multi-target at the same time. In addition, it cannot identify product items and can only identify product categories.
On the contrary, RFID tags have the advantages of small size, large capacity, long life, reusable, fast reading and writing, non-visual recognition, mobile recognition, multi-target recognition, etc. The ID code is unique in the world and thus becomes automatic. An emerging force in the field of identification is a leader in the field of automatic identification for the foreseeable future.
Inventory management is a very important part of the apparel industry. Establishing a rapid response QR inventory management system is the key to achieving fast replenishment.
 

Radio Frequency Identification (RFID) is the abbreviation of Radio Frequency IdentjficaTIon. It is a non-contact identification technology and is a more specific technical name for radio technology in the field of automatic identification. Electronic tags are the popular name for radio frequency identification (RFlD). In recent years, RFID technology has been widely used in warehouse management. The main application mode is warehousing management and logistics tracking management.
The RFID system is composed of two parts, namely, electronic tags (transponders, Tags) and RFID readers. Electronic tags usually contain electronic data information in a convention format. In practical applications, electronic tags are attached. Store on the object to be identified (surface or interior).
When the object to be identified with the electronic tag passes through its readable range, the long distance RFID reader automatically reads the appointment identification information in the electronic tag in a contactless manner, thereby realizing automatic identification of the item or automatically collecting the item identification information. The function and further management functions such as collection, processing and remote transmission of object identification information can be realized by computer, PLC and its network.
 

RFID (radio frequency identification) technology has the potential to become a common and important part of embedded system design. In addition to its traditional role in inventory management, new advances in RFID tags and high-speed long distance RFID readers make it easy for embedded system designers to incorporate features such as access control, anti-counterfeiting, easy payment, medical authentication, dynamic pricing, and product history. , remote asset tracking.
Embedded RFID applications typically include readers in products or systems to add local data collection features that enhance the basic functionality of the product. Today, embedded RFID applications are found in hotels, prisons, hospitals, retail outlets, farms, casinos, toll roads, factories, and a variety of commercial and military vehicles. As embedded system developers realize the value of this technology and adopt it in new designs, these non-traditional RFID applications will become commonplace.
One of the most basic and common uses of RFID technology is the EAS (Commodity Electronic Security) system. The RFID EAS system uses a large antenna board and security labels of various sizes. The former is installed at the store exit, and the latter is hung on high-risk goods. . The basic principles of all EAS systems include the use of transmitters and receivers, the former creating an electromagnetic field in the store exit area and the latter detecting changes in the electromagnetic field.