The rfid reader-writer handheld terminal (abbreviation of Rfid Handheld Terminal) is also called "RFID reader", that is, radio frequency identification. It can automatically identify the target object and obtain relevant data through the radio frequency identification signal without manual intervention. It can identify high-speed moving objects and It can identify multiple RFID tags at the same time, and the operation is fast and convenient. There are fixed and handheld RFID readers.
The handheld terminal of the rfid reader has the function of reading and writing RFID, and can read the RFID tags. It is a PDA (portable mobile hardware) with specific functions. The combination of RFID and PDA not only maintains the original function of PDA. The frequency bands that RFID handheld terminals can read and write include low frequency, high frequency, ultra high frequency, active, etc.
The working principle of the rfid reader handheld terminal: after the rfid tag enters the electromagnetic wave emitted by the handheld terminal, when its frequency is the same as that emitted by the handheld terminal, an LC series resonant circuit is arranged in the radio frequency card to generate resonance so that the charge generated in the capacitor is sent out Product information stored in the chip (Passive Tag, passive or passive tag), or actively send a signal of a certain frequency (Active Tag, active or active tag); after the handheld terminal reads and decodes the information, it is sent to the central information The system performs relevant data processing.
Classification of RFID Reader Handheld Terminals
- Low frequency rfid handheld terminal
- High-frequency RFID handheld terminal, also known as NFC handheld terminal
- UHF RFID handheld terminal
How to choose RFID handheld terminal?
- To choose an rfid reader handheld terminal, you must first determine what RFID protocol to use
If the handheld terminal is different from the tag protocol, it will not be able to read the tag.
- When choosing an rfid reader/writer handheld terminal, the number and data of tags to be read each time should be considered
Depending on the application, the number of tags required to be read varies. Sometimes it is necessary to read only one tag at a time, and sometimes it is necessary to read multiple tags at a time, and the data volume of each tag is relatively large.
- When choosing an rfid reader handheld terminal, you must also consider the matching of the antenna
RFID readers are generally divided into handheld and fixed. For mobile operations, the corresponding terminal will be selected to cooperate with the RFID handheld terminal.
- In terms of economic strength, cost and price
Combining all the costs invested: the cost of RFID reader handheld terminal equipment, tags, antennas, cables and related accessories
RFID application scenarios:
With the continuous progress of society and the continuous development of science and technology, electronic tags have been widely used in the daily life of modern people. Short-range radio frequency identification products are not afraid of harsh environments such as oil stains and dust pollution, and can replace barcodes in such environments, such as tracking objects on the assembly line of a factory. Long-distance radio frequency identification products are mostly used in traffic, and the identification distance can reach tens of meters, such as automatic toll collection or identification of vehicle identities.
- Expressway toll collection and intelligent transportation system
The application of REID technology in expressway automatic toll collection can fully reflect the advantages of this technology. When the vehicle passes through the toll booth at high speed, the toll payment is automatically completed, which solves the traffic bottleneck problem, improves the speed of the vehicle, avoids congestion, improves the efficiency of toll calculation, and can solve the problem of toll collection by toll collectors.
- Automatic identification and anti-theft of vehicles
By establishing an automatic vehicle number identification system using radio frequency identification technology, it is possible to know the operation of the vehicle at any time, which not only realizes the automatic tracking and management of the vehicle, but also greatly reduces the possibility of accidents, and can use the radio frequency identification technology to identify the owner of the vehicle. Carry out effective verification to prevent vehicle theft, and can effectively find the lost vehicle after the vehicle is lost.
- Cargo tracking management and monitoring
The electronic tags recording the container location, item category, quantity and other data are installed on the container, and with the help of radio frequency identification technology, the exact location of the container in the freight yard can be determined. The system can also identify unauthorized container movement, which is beneficial to management and safety.
- Automatic sorting system for mail and postal parcels
Radio frequency identification technology has been successfully applied to the postal package automatic sorting system in the postal field. This system has the characteristics of non-contact and non-line-of-sight data transmission, so the directionality of the package can be ignored during package delivery. In addition, when multiple targets enter the recognition area at the same time, they can be recognized at the same time, which greatly improves the cargo sorting capacity and processing speed.
- Access control and security
The use of electronic tags can effectively identify personnel, carry out security management and efficient charging, simplify entry and exit procedures, improve work efficiency, and effectively carry out security protection. The system will automatically identify the identity when a person enters and exits, and an alarm will be issued when an illegal intrusion occurs.
- Production automation and process control
RFID technology has many applications in production process control because of its strong resistance to harsh environments and non-contact identification. Through the use of RFID technology in the automatic assembly line of large factories, material tracking and automatic control and monitoring of production processes have been realized, production efficiency has been improved, production methods have been improved, and costs have been reduced.
- Electronic ticket
Use electronic tags to replace various "cards" to realize non-cash settlement, which solves the problems of inconvenient and unsafe cash transactions and the easy damage of various magnetic cards and IC cards in the past. At the same time, the use of electronic tags is convenient and fast, and several electronic tags can be identified at the same time, and charges are charged in parallel.
- Warehousing, distribution and other logistics links
Using radio frequency identification system for intelligent warehouse cargo management can effectively solve the management of information related to the flow of goods in the warehouse, monitor the information of the goods, understand the inventory situation in real time, automatically identify the goods, and determine the location of the goods.
- Animal tracking and management
The electronic tags encapsulated in small glass are implanted under the skin of animals, which can identify important information such as livestock and monitor animal health status, providing a reliable technical means for the modern management of pastures. In large-scale farms, it is possible to use radio frequency identification technology to establish breeding files, vaccination files, etc., to achieve the purpose of efficient and automatic management of livestock, and at the same time provide protection for food safety.
- Anti-counterfeiting
The electronic tag itself has a memory, which can store and modify data related to the product, which is conducive to the identification of authenticity. Utilizing this technology does not need to change the current data management system, and the unique product identification number can be completely compatible with the existing database system.
