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1. Function introduction
The installation adopts passive (passive) RFID tags as the only identifier for the information management of visitors to the exhibition hall. When the visitors arrive at each booth, the RFID reader installed in the booth automatically reads the tag information on the visitor’s visit card. To realize the informatization and identifiable management functions of the booths visited by visitors.
Schematic diagram of equipment deployment
describe:
As shown in the figure above, using Deca W8 one-to-four RFID reader (with 4-channel ceiling antenna), it can read the exhibitor information of the visitors of the four booths. The W8 reader/writer is powered by a POE network cable port, no external power supply is required, and can be quickly deployed under the existing network in the center of the exhibition hall. Greatly save the time of project deployment. At the same time, in order to ensure accurate reading of the antenna and avoid misreading of visitors’ tags between adjacent booth antennas, the system needs to use a linearly polarized high-performance UHF antenna to control the antenna’s reading range and avoid misreading between booths. Misreading of labels.
2. The realization principle of system hardware function
1. Booth reader
Use a UHF RFID reader to connect multiple antenna antennas and install them directly above the reception desk of each booth. When visitors approach the booth to visit, the UHF RFID reader can automatically read the tags carried by the visitors through the location antenna. And transmit the read label information to the system information data management center. This will record the visitor route and exhibitor counters visited.
In order to ensure accurate reading and avoid misreading of visitors’ tags between adjacent booth antennas, the system needs to use a linearly polarized high-performance UHF antenna to control the antenna’s reading range and avoid misreading of tags between each booth . The schematic diagram of reader installation and reading is as follows:
Schematic diagram of reader work
2. Booth location antenna
The radio frequency feeder is connected to the corresponding antenna port of the reader and installed directly above the booth reception desk to achieve the function of obtaining tag information carried by visitors.
Performance characteristics:
Specially designed high-performance linear polarization antenna, high gain/sensitivity, support for high-power input, easy to install and beautiful for the RFID reader to accurately read the position range.
Three, equipment and card description
1. RFID reader (W8)
The fixed long-distance UHF reader is a high-performance passive UHF RFID electronic tag reader specially designed for meeting personnel management, vehicle management, warehouse material management and other IoT terminal information collection applications. It is especially suitable for garage vehicles. Automatic supervision, logistics monitoring, warehouse products, automatic quick inventory and other occasions, superior performance, safe and reliable, in an application environment full of interference, can still maintain stable reading performance and high reliability; support EPC Class 1 Generation 2 and ISO18000-6B Protocol standards.
1.1 Product features
◆ POE power supply technology
◆ Support communication interface and antenna connection working status detection function
◆ High receiving sensitivity supports reader-intensive mode
◆ Large dynamic, high-precision output power adjustment, easy to adjust the effect of card reading
◆ Provide 2-way input/output to switch value interface
◆ Rich interface resources, providing Ethernet, RS232, USB, wireless interface (optional)
◆ Resumable transmission and storage of information data after power failure
◆ The appearance of the product is generous and exquisite, and the installation is easy
1.2 Application areas
Personnel management, vehicle management, warehousing and logistics management, container management, medical equipment management, power tools and equipment management, library management, animal husbandry management, personnel management, asset management, etc.
2. Position antenna (AT-0021)
Uses: RF card reader antenna, used in docks, parking lots, shopping malls, toll stations, etc.
Features: Beautiful appearance, good environmental adaptability, convenient and quick installation.
3. Exhibitor badge
Purpose: encapsulated into the size of a standard card, can print exhibition patterns and sponsor LOG, etc., and can be matched with card sleeves and lanyards, which is convenient for visitors to wear. The card has a chip and induction coil, the specific functions are as follows:
NXP’s UCODE G2XM chip is fully compatible with UHF EPC G2 protocol standards, high data transmission rate: sending speed: 40-160kbit/s, return speed: 40-640kbit/s, with 512bit user space, 96-224bit EPC space, 64-bit identifier (including 32-bit tag serial number), 32-bit access password, 32-bit self-destruct password, operating frequency from 860 to 960 MHz, long operating distance, in the standard tag antenna, the reading distance can reach 1-5M (gain ≥ 12dBi points Body antenna, RF power gain of reader ≥ 33dB). The chip is a typical 96-224bit EPC electronic product code format, which is widely used for item-level data management of logistics and commodities.
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