Application case of active RFID management for inland ships in Hangjiahu
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The collection of navigation information of inland river ships has always been an important subject of exploration and research by the maritime administration department. Due to the lack of suitable channel sensing technology, the collection of navigation information of inland river ships has so far remained at the level of manual recording and observation. The reuse value of the ship is not high, which weakens the support of ship navigation information to the decision-making of channel construction. In response to this problem, a technical means that can carry out detailed management of ships is urgently needed to solve the isolated island of navigation information of inland ships, so that the navigation information of ships can enter the port management information platform and integrate with other system data.
Combined with the actual situation of inland traffic in Zhejiang Province, a channel card reader is installed on the channel, and the reading distance is required to reach more than 200 meters. Allocate electronic labels for ships, and the data content in the electronic labels onboard includes: 12-digit electronic label number (unique), other basic information of the ship (ship license, ship owner information, tonnage, place of registration, …), ship visa Information, etc., and have anti-dismantling, data encryption and other functions. In this way, a ship dynamic information collection platform based on RFID radio frequency technology is established, and it is integrated with other business systems of the port and shipping system.
The Hangjiahu Zhakou management electronic label system adopts 2.45G active RFID identification, anti-demolition and long-distance identification technology to realize the dynamic collection of ship operation information within the jurisdiction and meet the needs of dynamic supervision of ships in the Hangjiahu area. RFID shipborne electronic tags have a unique ID number. When the electronic label is issued, the ID is bound to the information such as the ship’s license plate, tonnage, and crew capacity through the RFID onboard electronic label management subsystem. When the user uses it, the ship-borne electronic tag is installed in the ship, and its ID number is used as the ship’s ID card to identify the ship. The channel card reader collects ship data in real time by identifying the ID information periodically sent by the electronic tag. The functions of the system include: ship information collection in the inland waterway environment, processing of collected information, release of collected information, electronic label management, sharing of collected information, etc.
Highlights of this use case:
1. For the first time, inland shipping adopts 2.45G active RFID identification and anti-demolition technology to identify ships at a long distance and improve the safety and reliability of the ship identification system.
2. RFID as a platform for identification, short-range communication, and wireless sensing technology
From the perspectives of advancement, availability and maturity, 2.45Ghz active RFID technology is adopted. It is closely combined with the 2.45Ghz air interface standard being developed in my country. This standard fully considers the application of 2.45Ghz Internet of Things and will form RFID and IoT The networking field has the national standard of China’s independent intellectual property rights.
3. RFID on-chip operating system
The operating system COS built on the standardized RFID command set, file management system, state machine management system and anti-collision mechanism will provide a stable, reliable and scalable embedded software platform; COS is embedded in the real-time operating system of the smart terminal for integration .
4. RFID security identification algorithm and process
Use (key seed + random number + fixed constant) to perform SHA1 operation, XOR the operation result with plaintext data to obtain ciphertext, extract random number during decryption, and then use (key seed + random number + fixed constant) to perform SHA1 Operation, XOR the operation result with the ciphertext to restore the plaintext.
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