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Application prospect analysis of RFID electronic tag technology in measurement and storage management

1. Overview of RFID

Radio frequency identification technology is the abbreviation of radio frequency identjfication. It is a non-contact identification technology. It is a more specific technical name for the application of radio technology in the field of automatic identification. Electronic tag is the popular name of radio frequency identification (RFlD).
It automatically identifies the target object and obtains relevant data through RF signal. The identification work does not need manual intervention, and can work in various harsh environments. This electronic tag has the advantages of waterproof, antimagnetic, high temperature resistance, long service life, small volume, long reading distance, encrypted data storage and batch reading, and can identify high-speed moving objects. In recent years, RFID technology has been widely used in warehouse management. At present, the main application modes are warehouse management and logistics tracking management.

2. Basic structure and working principle of RFID Technology

2.1 basic structure of RFID system

RFID system consists of two parts: electronic tag and reader The electronic data information in the agreed format is usually stored in the electronic tag. In practical application, the electronic tag is attached to the object to be identified (surface or interior). When the object to be identified with the electronic tag passes through its readable range, the reader automatically reads out the agreed identification information in the electronic tag in a contactless way, so as to realize the function of automatic identification of articles or automatic collection of article mark information, and further realize the collection of object identification information through computer, PLC and its network Management functions such as processing and remote transmission.

2.2 working principle of RFID Technology

The electronic tag and reader realize the spatial (contactless) coupling of RF signal through the coupling element. In the coupling channel, the energy transmission and data exchange are realized according to the timing relationship.
The working principle is as follows: the information to be sent by the reader is encoded, loaded on the carrier signal of a certain frequency, and sent outward through the antenna. After the electronic tag entering the working area of the reader receives the RF signal, the relevant circuit in the inner chip modulates, decodes and decrypts the signal, and then judges the naming request, password, authority, etc. If it is a command to read information, the control logic circuit reads relevant information from the memory, and then sends it to the reader through the antenna in the card after encryption, coding and modulation. The reader decodes, decodes and decrypts the received signal and sends it to the central information system for relevant data processing: if it is a command to modify information, The working voltage rise of the internal charge pump caused by the control logic provides the energy for rewriting the contents in eeprrom: if it is judged that the corresponding password and authority are inconsistent, an error message will be returned.

3. Types and characteristics of electronic labels

3.1 types of electronic labels

Those with batteries in the tag are called “active tags” and those without batteries in the tag are called “passive tags“: “active tags” have high working frequency band, long recognition distance and high communication rate with readers and writers. The “passive electronic tag” is the opposite.

3.2 characteristics of electronic labels

(1) Miniaturization of volume and diversification of shape
RFID is not limited by size and shape in reading, and does not need to match the same size and printing quality of paper for reading accuracy. In addition, RFID tags can be miniaturized and diversified. For example, RFID tags can be made into card, tag, ring, button, pen and so on. Printed antennas are sealed inside to apply to different products.
(2) Pollution resistance and durability
The carrier of traditional bar code is paper, which is easy to be polluted, but RFID has strong resistance to substances such as water, oil and chemicals. In addition, the bar code is attached to the plastic bag or outer packaging carton, so it is particularly vulnerable to damage: the RFID volume label stores the data in the chip to avoid contamination.
(3) Reusable
Today’s bar codes cannot be changed after printing. RFID tags can repeatedly add, modify and delete the data stored in RFID labels to facilitate the update of information.
(4) Penetrating and barrier free reading
When covered, RFID can penetrate non-metallic or non transparent materials such as paper, technical materials and plastics, and can conduct penetrating communication. The bar code scanner must be close and there is no object blocking before it can read the bar code.
(5) Large memory capacity of data
The capacity of bar code is 50bytes, the most human capacity of two-dimensional bar code can store 2 to 3000 characters, and the maximum capacity of RFID is several mega bytes. With the development of memory carrier, the capacity of numerical control also has the trend of expanding. In the future, the amount of information that items need to carry will be larger and larger, and the demand for the expansion capacity of volume labels will increase accordingly.
(6) Security
Because the electronic label complies with ISO15693 standard, it has an internationally unified and non repeated 64 bit unique identification code This internal code is solidified in the chip by the manufacturer before leaving the factory and cannot be copied or changed. Therefore, it can uniquely identify the attributes of the object: key authentication and multiple encryption can be used for data transmission to ensure the security of the system.
(7) Fast scan
Only one barcode can be scanned at a time: RFID identification reads several RFID tags.

4. Application of electronic label in measurement and storage management

20220217121153 56207 - Application prospect analysis of RFID electronic tag technology in measurement and storage management

According to the actual use of electric energy measuring instruments, about 100000 meters are stored, turned over, distributed and scrapped in the measuring center every year. With the deepening of warehouse management, some problems to be solved gradually emerge. First of all, the asset information of measuring instruments in the whole city should be managed uniformly It is an extremely huge and cumbersome work. In addition to overcoming the differences brought by meter manufacturers and specifications, it also needs to track and confirm information in multiple links. Secondly, the traditional bar code system has obvious disadvantages, such as easy pollution, damage, need to stop waiting for scanning one by one, and the batch reading efficiency is not high, which can not meet the needs of fast and accurate. This brings problems to the daily table management, such as high warehousing intensity, high error rate in counting the warehouse, and the inability of agricultural juice to be placed horizontally. How to solve these problems? Practice shows that the application of electronic tag management system in RFID technology can play a great role here.

The electric energy meter is stored in the turnover box on the slide shelf equipped with the electronic label system, and the staff can enter and exit the warehouse according to the prompt of the electronic label. The electronic label management system can exchange data with the database server through Ethernet. You can send out of stock request to the three-dimensional warehouse management system. The management system confirms whether there is inventory, and then issues the outbound operation according to the location address of the inventory: the display shelf management system can exchange data with the database server through Ethernet, It can send the request for goods to the database server through connection. The database server accepts the request, queries the electronic label inventory database to confirm whether there is inventory, and then sends it to the electronic label tube according to the channel where the inventory is located. The electronic marker sorting system is a set of electronic devices installed on the storage space, which are connected and controlled by an interface card installed on the computer, By using the light signal and digital display as auxiliary tools, the staff can correctly and quickly complete the picking work under the guidance of the electronic label. Process the system to issue orders. The electronic label management system has the general functions of order query, entry, adjustment and execution. In order processing, you can handle ordinary orders and emergency orders respectively. In addition, the management system also supports the operation of return orders.
The superiority of electronic label management system in warehouse management has been fully reflected

  • 1. The operation efficiency is doubled: the electronic tag picking takes the electronic tag light number and number as the guiding tool, which can simplify the picking operation into three simple actions of [look, pick and press]. Assist the cargo pickers to pick up the cargo, speed up the speed of picking up the cargo, and save the time of searching, looking at the order and some walking time.
  • 2. The operation error rate can be close to zero: the electronic tag has the function of controlling the picking process. It can reduce the missing errors and help the picking personnel find goods. Therefore, it can reduce the picking error rate.
  • 3. Paperless operation without any writing: electronic label picking is to convert the order to be displayed on the electronic label, which can avoid the complexity of window operation and achieve the purpose of paperless.
  • 4. Non thinking zero judgment operation that does not rely on skilled operators: it is standardized operation, simple operation, convenient and easy to learn, and the staff can work only after a short training. At present, the training time of operators of many electronic label picking systems can be shortened from two weeks to two days. If it is only two hours for simple operation and application. This is not only to narrow the gap in work efficiency between novices and experts, but more importantly, it makes the application of human resources more flexible. Especially when the shipment volume is large, hourly or temporary staff can be added to deal with a large number of orders in time to meet the needs of retail stores.
  • 5. Promote management upgrading: electronic tag picking can correctly record the work information of the picking site and display it on the screen or report in real time, making the on-site information transparent, assisting managers to quickly respond to the situation and promoting management upgrading.

5. Conclusion

In the application of RFID technology in measurement and storage management, it makes full use of existing resources and improves the overall operation level of the center. It realizes the automation of warehouse management information, promotes the standardization, standardization and digitization of production process, improves production efficiency, reduces inventory and capital occupation, and enhances market competitiveness. Any emerging technology often takes a period of time from its birth to its convenient use, and the length of time depends on many factors. In addition to the self-improvement of technology, it also needs to be equipped with relevant technologies, and the humanistic environment outside technology can not be ignored. Moreover, the adjustment and adaptation of humanistic environment is often more complex than technological invention, and the time may be longer.
China’s electronic label market is in the start-up period. With the progress of science and technology and the needs of digital warehouse management, electronic label (RFID) technology must have a very broad prospect.

SourceChina RFID Solutions Provider – Actility Technologies Company Limited (www.tractility.com)

Actility provides powerful security solutions for retail store management to prevent asset and property losses, improve transaction security, and provide intelligent analysis. We produce AM/EM/RFID systems, EAS tags, EAS soft tags, EAS safer, lanyards, detachers and all kinds EAS accessories products. Infrared people counter and camera people counter is available. If you want to have more information about the article or you want to share your opinion with us, contact us at [email protected]

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