Classification of RFID Readers From RenhotecIC

 

The RFID system is mainly composed of three parts: reader, electronic tag and data management system. We have popularized the classification of UHF RFID tags before, and today we will talk about its other partner-RFID reader-writer.

 

RFID reader, also known as "RFID reader", is mainly used to read out the information in the electronic tag, or write the information required by the tag into the tag. Automatically identify target objects and obtain relevant data through radio frequency identification signals without manual intervention. It can identify high-speed moving objects and identify multiple RFID tags at the same time, and the operation is fast and convenient. RFID readers include low frequency, high frequency, ultra high frequency, active and so on.

 

Classification of Readers

 

Distinguish by frequency:

 

RFID readers can be divided into 125K, 13.56M, 900M, 2.4G and other frequency band readers according to the frequency.

 

125K: Generally called LF, easy to use and low in price, it can be mainly used in the management of livestock entry and exit in animal husbandry.

 

13.56M: Generally called HF, with strong confidentiality and fast reading speed. It is mainly used in home-school communication, personnel attendance management, entrance and exit management, books, file anti-theft management, and government meeting sign-in.

 

900M: Generally called UHF, with long communication distance and good anti-collision performance, it is generally used for parking lots and logistics.

 

2.4G: microwave segment RFID card reader, strong penetrability.

 

5.8G: Microwave segment RFID card reader, used in the ETC electronic toll collection system of expressways.

 

Distinguish from the appearance of the structure:

 

According to the functional requirements of the data management system and the production habits of different equipment manufacturers, readers have various structures and appearances. According to whether the antenna and the reader module are separated or not, it can be divided into a separate reader and an integrated reader.

 

Common separate readers include fixed readers, while typical integrated readers include handheld readers. According to the application of the reader, it can be divided into fixed reader, industrial reader, handheld reader, card reader and infrared reader.

 

fixed reader

 

For readers, one of the common forms is fixed readers. The radio frequency controller and high frequency interface are packaged in a fixed shell, and the function of radio frequency identification is fully integrated to form a fixed reader.

 

Sometimes in order to reduce the size of the device, reduce the manufacturing cost of the device, and facilitate handling and transportation, the antenna and radio frequency module can also be packaged in a housing unit, thus forming an integrated reader or an integrated reader.

 

From the appearance of the fixed reader, it has a reader interface, a power interface, a mounting bracket, and a working light/power indicator light.

 

Industrial reader

 

Perhaps the largest application field of RFID systems in the future will be industrial applications, including mining, animal husbandry and automated production. Most industrial readers have standard on-site total interfaces for integration into existing equipment.

 

In addition, this type of equipment also needs to meet a variety of different application protection requirements. For example, a mine reader must have an explosion-proof device. The typical technical parameters of industrial readers are the same as those of fixed readers.

 

handheld reader

Handheld reader, also known as portable reader, is a type of RFID tag reader suitable for handheld use by users. Its working principle is exactly the same as that of other forms of readers. Handheld readers are commonly used in animal identification, payment scanning, patrol testing and other occasions.

 

Simply put, a handheld reader is an RFID read/write module, an antenna, and a handheld computer integrated together to perform tag identification. Handheld readers are generally powered by rechargeable batteries, and the operating system can be Windows or other operating systems.

 

Secondly, the handheld reader can be used for animal identification, can be used as a terminal for inspection equipment, payment settlement, and can also be used as auxiliary equipment in service and testing work and auxiliary equipment for equipment activation; it has an LCD liquid crystal display screen, and There is also a keyboard panel for operation or data entry.

 

The data exchange between the portable reader and PC or server is usually realized through the optional RS232 serial port. Unlike fixed readers, handheld readers may have requirements for the data storage capacity of the system itself.

 

card reader

 

Card readers, also known as card issuers, card readers, card reader management machines, etc., are mainly used to perform specific operations on radio frequency tags, including file creation, consumption error correction, loss reporting, card replacement, and information correction. together with the computer.

 

In essence, the card reader is actually a small radio frequency tag reading and writing device. Card readers are often used in conjunction with card reader management software. Compared with the reader, the card reader of the same manufacturer has the characteristics of lower transmission power and shorter reading and writing distance.

 

Infrared reader

 

The infrared radio frequency automatic identification system has strong identification direction, the reader is exquisite and ultra-small, can identify passive cards, and the reading distance can reach 4m. The system can be widely used in fields that require automatic identification to help customers realize efficient, convenient and safe automation management. Its application fields include automated factories, vehicle and cargo weighing places, logistics operation centers, fleet management terminals and parking lots, etc.

 

The infrared radio frequency automatic identification system uses its innovative space communication protocol and unique solar module that can sense infrared light to realize non-contact long-distance automatic identification.

 

The reader/writer of this system is exquisite and ultra-small, with strong identification direction, and the identification card has no battery and no antenna. The tags are powered by sunlight, infrared light-emitting diodes built into the reader, or infrared light from an expander. The system is free from electromagnetic field interference, does not interfere with other systems, has accurate identification, and does not need to apply for a radio communication license to use the system.

 

Application of reader

 

RFID technology is used in many industries, such as logistics and warehousing management, anti-counterfeiting traceability, industrial manufacturing, ETC, etc. Especially after the concept of Industry 4.0 was put forward, the industry moved towards intelligence and automation, and RFID readers were widely used in the industry.

 

Analysis of the application of RFID readers in industrial production lines:

 

In the field of manufacturing: Industrial RFID readers are used to speed up the manufacturing process in receiving goods, component assembly, pallet/part tracking, inventory management, and non-finished product transportation verification;

 

In the field of logistics operations: industrial RFID readers can enable companies to improve the identification and verification of shipping/receiving, returnable shipping item tracking, and overall visibility status throughout the logistics cycle.

 

At present, industrial automation RFID readers are widely used in the automatic collection and management of information such as production lines/assembly lines of large and medium-sized manufacturing enterprises. By implementing the RFID system, different types of products can be coded and written into the RFID electronic tag.

 

 

 

When different types of products enter the processing point, the RFID reading and writing equipment reads the information in the RFID electronic tag, so that the processing equipment can confirm which type of product to process.

 

Industrial-grade readers, RFID tag pendants and other products improve the level of manufacturing automation, reduce manual operations, realize mixed-flow, automation, and high-accuracy production information collection modes in the production process, and reduce misreadings and missed readings caused by human operations.

 

In the field of industrial production, the addition of RFID technology greatly reduces human errors, can realize the monitoring and visual management of the production plan execution process, and enhance the timeliness of production planning and scheduling.