Shanghai Shijia Logistics Turnover Carrier Asset Management RFID Equipment Configuration Scheme
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1. Introduction to RFID technology
Radio Frequency Identification (RFID), commonly known as electronic tags, is widely used in fields such as assets, personnel, supply chain, and tool management. Radio frequency identification is a non-contact automatic identification technology. It automatically identifies target objects and obtains relevant data through radio frequency signals. The identification work does not require manual intervention and can work in various harsh environments.UHFRFIDThe technology can recognize high-speed moving objects from a long distance, and can recognize multiple tags at the same time, which is quick and convenient to operate.
The basic RFID application system consists of three parts: Tag: consists of coupling elements and chips, each tag has a unique electronic code, attached to the object to identify the target object; Reader: read (sometimes The device that can also write tag information can be designed as a handheld or fixed type; Middleware (MiddleWare): plays an intermediary role between the RFID tag and the application system, and is the data inflow and outflow between the application system and the reader Software. The basic RFID application system composition, as shown in the figure:
Figure 1: Basic RFID application system composition
Comparing radio frequency identification technology with barcode technology, radio frequency identification has many advantages, such as long identification distance, no need for visual visibility of tags during identification, ability to be used in harsh environments, content can be updated, and multiple tags can be read in batches , Can identify high-speed moving objects, large amount of information, not easy to imitate, etc.
Radio frequency identification technology is considered to be one of the most promising information technologies in the 21st century. In terms of current technological development, the RFID field is at the forefront of the development of the Internet of Things and is also one of the basic technologies for the realization of the Internet of Things. RFID technology has a wide range of applications and a high degree of automation, and is gradually internationalized and popularized, such as personnel access management, vehicle management, asset management, production process management, logistics management, cargo tracking management, anti-counterfeiting management, and so on. The core of its technology is to attach RFID tags to make people, vehicles, confidential media or goods become targets that can be identified by the system through artificial identification methods. Through the management of targets and related information, high efficiency, The purpose of scientific management.
2. Project background
At present, the traditional asset management model is difficult to adapt to the needs of new forms of asset management, both in terms of quality and efficiency. Therefore, it is inevitable to find a simple and efficient management method. The current asset management of enterprises and institutions mainly adopts a combination of manual management and bar code management. Manual management has low efficiency and high error rate. The barcode technology management method itself has certain limitations, such as fragility and strict environmental restrictions. The RFID electronic tag is attached to the surface or inside of the fixed asset, and the related information of the fixed asset is recorded in the tag and associated with the database. At the same time, the read-write equipment installed in the main channel and at different locations in the area will automatically read and record the information in the tag, and the staff can also conduct regular or irregular inventory of fixed assets through the handheld reader. The application of RFID technology in fixed asset management can achieve the following effects: Based on asset life cycle management, based on the principle of maximizing asset resources, helping enterprises and institutions improve the quality and efficiency of asset management, and greatly reduce the rate of asset loss.
At present, asset management is one of the areas where the application of RFID technology is growing rapidly. This data collection solution mainly uses the characteristics of RFID non-contact wireless automatic identification technology to install different electronic tags for objects of different materials, and The usage information of the object is written into the electronic label. When checking assets, read the electronic label information through mobile read-write devices and combine it with the central asset management system to automatically and real-time realize efficient and accurate asset use on information such as asset addition, allocation, idleness and retirement Situation management, thereby improving the efficiency of asset use and reducing costs.
In order to further realize the work requirements of “precise control and fine management” of the logistics turnover box, according to the current management status and the feasibility study of RFID technology in logistics management, a company proposed to implement the RFID system in its logistics turnover box. The purpose of application is to improve the advancement and efficiency of logistics turnover box management, while reducing the loss rate.
Shanghai Shijia Intelligent System Co., Ltd. (hereinafter referred to as: Shanghai Shijia), combined with the current RFID technology and based on the business needs of a company’s management, proposed the application of RFID technology in logistics turnover box assets. This solution uses RFID electronic tags to identify the logistics turnover box, and integrates advanced RFID data collection methods into the management system, and realizes the informatization and modernization of the asset management of the enterprise turnover box. In this way, the management level and management efficiency of corporate assets are improved, and corporate management costs are reduced.
3. Scheme structure
According to the RFID management requirements of a company’s turnover box, the target system will be composed of intelligent RFID handheld terminal, intelligent RFID identification channel terminal system, RFID label issuing terminal system and other subsystems, together with WiFi/LAN network to form an RFID logistics turnover box management system. That is, the intelligent RFID handset system, the intelligent RFID identification channel terminal system, and the RFID equipment server system, through the WiFi/LAN network to access and operate the management system database, realize the intercommunication and sharing of data required for warehouse management.
The network topology diagram is as follows:
Figure 2: Hardware network topology diagram
4. Solution
A company used RFID technology to apply RFID technology in the logistics turnover box, and focused on solving two problems: improving the efficiency of turnover box storage and exit, and transparent asset management to reduce loss. Specifically, the following management objectives must be achieved:
A. Warehousing management uses the logistics turnover box identified by RFID tags as the basic identification unit;
B. Initialize data and register assets on the turnover box label through the bid-issuing terminal system;
C. Through the intelligent RFID identification channel terminal system, realize the in and out counting of turnover box assets, automatic inventory update, and associate the outgoing data with the receiver’s information;
D. Through smart RFID handheld terminal, as an emergency data collection program when entering and exiting the warehouse;
E. Realize inventory, maintenance and other operations of turnover box assets through smart RFID handheld terminals.
In order to achieve the above-mentioned turnover box management goals, this program focuses on how to use RFID equipment in logistics management from two aspects: label selection and equipment selection, so as to better utilize the technical advantages of RFID.
4.1 Labeling and labeling
According to the understanding of Huawei’s equipment projects, the RFID tags that need to be used in the management of the logistics turnover box are mainly the turnover box tags.
Turnover box label
The turnover box label is used to identify the asset and contains anti-static treatment materials. The label should select the anti-metal label ST-9525. According to the situation, use screws or rivets to directly fix and install on the smoke cage at a specific position. The form of the label is shown in the figure below. This method is easy to install, convenient for data collection, and can ensure the accuracy and reliability of label information reading and writing.
Applicable fields: suitable for military IT (computer), asset management, logistics management, auto parts process management and other fields
Features: High-strength multifunctional label, pasted on metal for use
Frequency: 902~928MHz EPC Gen2
Size type: 95 x 25 x 3.5mm (with adhesive/rivet hole)
Reading distance: Fixed type: 6m or more (output 30dBm standard) Mobile type: 2.5m or more (output 28dBm standard)
Applicable temperature: -20℃ ~ 85℃
You can also choose the ST-A120 label, the form and installation position of the label are shown in the figure below.
Application field: plastic turnover box, etc.;
Frequency: 920.5-924.5MHz
Chip: Alien H3, EPC Class-1 Gen2, EPC 96bits
Reading distance: 4M
Working temperature: -20～75℃
Application temperature: -40～85℃
Size: 118*32*12 mm
Installation method: use adhesive, screws, rivets
4.2 Process design and equipment configuration
In order to realize the data collection of each link in Huawei’s equipment logistics turnover box management system, the RFID equipment that needs to be configured mainly includes: shielded RFID identification channel, RFID handheld terminal, RFID card issuer, etc.
4.2.1 Asset registration
In the card issuing terminal system, complete the initialization of the device tag data through the card issuer device SR-3200B, fix the tag to the turnover box assets by rivets or adhesive, and complete the asset registration;
The basic performance parameters of the desktop read-write device SR-3200B are as follows:
Working temperature: -10℃~55℃
Storage temperature: -20℃~75℃
Working humidity: 5%~95% non-condensing
Power supply: DC +5V/0.5A (USB power supply, optional adapter power supply)
Size/weight: 168*108*40mm /about 0.4kg
Shell material: plastic (PC/ABS)
RFID: EPC Global Class1 Gen2/ISO 18000-6C
Frequency characteristics: National standard: 920MHz~925MHz American standard: 902MHz~928MHz
Frequency mode: fixed frequency/frequency hopping, 10 frequency hopping points
Output power: 16~22dBm, step interval 1dB
Reading label distance: reading label distance> 1 meter, writing label about 0.3 meters
Antenna port: no external antenna port, built-in a small circular polarized antenna
Communication interface: USB virtual serial port (default)/RS232, choose one
4.2.2 Assets export and storage
Install intelligent shielded RFID identification channels at the entrance and exit of the warehouse to identify the number of turnover box assets passing through the channel in batches and record relevant customer information; in special circumstances, handheld computers can be used for in and out of the warehouse. Generally, it is necessary to configure each set of access channels, and the specific data is determined according to the actual situation of the warehouse.
Shielded RFID identification channel
The shielded RFID identification channel (customized development product required) is configured at the entrance and exit of the warehouse, and is used to read the label of the turnover box.
The shielded RFID identification channel is an integrated device independently designed and developed by Shanghai Shijia, mainly composed of fixed RFIDRead and write equipmentSR-2414, 4 antennas, radio frequency signal shielding cover, control cabinet and other components, has the characteristics of flexible installation and deployment and easy expansion and installation of external equipment. This identification channel uses a three-sided radio frequency signal shield to prevent misreading and miswriting of many smoke cage tags outside the channel, which can effectively ensure the identification rate and reliability of the tags. The identification channel and the management system conduct real-time data interaction through the wired LAN, so as to realize the identification and writing of the cigarette cage label information.
It can be directly controlled and displayed on site through an industrial computer, including an alarm for alarm. In order to further improve the data recognition accuracy of the channel, two sets of rfid fixed readers and antennas can be placed in the channel.
The built-in fixed RFID equipment adopts Shanghai Shijia’s SR-2414. This equipment has super anti-collision performance and super long reading distance, and has energy-saving mode with detection tag function and logic input and output function, which is flexible in configuration and use. convenient.
The basic performance parameters of SR-2414 are as follows:
Working temperature: -20℃~55℃
Storage temperature: -40℃~85℃
Working humidity: 5%~95% non-condensing
Power supply: DC +9V/3A
Size/weight: 180*180*43mm/about 1kg
Shell material: metal (aluminum alloy)
Interface protocol: EPC Global Class1 Gen2/ISO 18000-6C
Frequency mode: fixed frequency/frequency hopping, 10 frequency hopping points
Output power: 16~31dBm, step interval 1dB
Reading distance: reading> 12 meters, writing is about 50% of the reading distance
(Related to reader parameter settings, antennas and tags)
Antenna port: 4 SMA interfaces
Communication interface: RS232, 10/100M Ethernet
Working mode: external trigger/interval T cycle/continuous work
I/O port: 4 photoelectric isolation input / 2 relay output
4.2.3 Asset inventory and search
Use the handheld to perform inventory and search operations on the turnover box assets.
The basic performance parameters of SR-6601 are as follows:
Processor: ARM9 32-bit processor, main frequency 400MHz
Operating system: WinCE 5.0
Memory: 64M/128M
FLASH memory: 256M
Display: 3.2 inches TFT true color 240*320 resolution with handwriting touch screen
Barcode scanning: support one-dimensional laser barcode
RFID: High-density integrated chipset and SR-5101 UHF read-write module,
Support EPC C1 G2/ISO 18000-6C protocol
Wireless transmission: GPRS/WiFi/BlueTooth
Interface: SIM card, USB
Protection level: IP54, able to withstand multiple drops from 1.2 meters to the cement surface
Working environment: use 0℃~50℃, storage -20℃~70℃
4.2.4 Asset repair and maintenance
During maintenance and repair operations, a handheld device or a card-issuing terminal can be used to identify the assets of the turnover box.
4.2.5 Asset retirement
After the asset is scrapped, the hand-held machine or card issuing terminal can also be used to identify the turnover box assets. The label can be recycled as needed for reuse.
4.3 System characteristics and implementation benefits
4.3.1 System features:
A. Use RFID tags to identify the logistics turnover box and use it as the basic unit of logistics process management to realize automatic data collection;
B. Integrated application of a variety of data collection methods, through wired/wireless communication methods, to achieve data collection and upload by smart RFID identification channels, smart RFID handsets, card issuing terminals and other read-write devices;
C. Complete turnover box asset management process, covering registration, warehousing, outgoing, inventory, maintenance and scrap management, etc.;
D. Accurate inventory management, automatic correction of inventory when entering and leaving the warehouse, and timely warning of illegal entering and leaving the warehouse.
4.3.2 Implementation benefits:
A. Complete flow management function during the life cycle of the turnover box, timely alarm for errors in and out of the warehouse, and greatly improved the ability of real-time dynamic management of the turnover box;
B. Real-time management, fast operation, detailed records, and complete management links.
C. Improve the accuracy of warehouse entry and exit, and the data will be more accurate;
D. Real-time collection and recording of data in the whole process, through information centralized management, to achieve information sharing, reduce labor links, and save time; through statistics, analysis and processing of data, various data required for management are provided, and decision-makers are provided with reliability in accordance with.
E. Effectively improve the utilization rate of the turnover box and reduce the loss of turnover box assets;
F. Flexible and easy-to-use RFID middleware technology can easily expand the RFID data collection method in the existing management system, and fully protect the existing investment of the enterprise.
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